[Federal Register Volume 63, Number 11 (Friday, January 16, 1998)]
[Rules and Regulations]
[Pages 2726-2803]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 98-935]



[[Page 2725]]

_______________________________________________________________________

Part II





Environmental Protection Agency





_______________________________________________________________________



40 CFR Part 81



Identification of Ozone Areas Attaining the 1-Hour Standard and to 
Which the 1-Hour Standard is No Longer Applicable; Final and Proposed 
Rules

  Federal Register / Vol. 63, No. 11 / Friday, January 16, 1998 / Rules 
and Regulations  

[[Page 2726]]



ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 81

[FRL-5945-7]


Identification of Ozone Areas Attaining the 1-Hour Standard and 
to Which the 1-Hour Standard Is No Longer Applicable

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule.

-----------------------------------------------------------------------

SUMMARY: The EPA is taking action today to identify ozone areas where 
the 1-hour standard is no longer applicable. Therefore, the 40 CFR part 
81 for ozone is being amended to reflect such changes. Today's 
regulation is being published in direct response to the President's 
memorandum of July 16, 1997. The President's memo directed EPA to 
publish within 90 days an action identifying ozone areas to which the 
1-hour standard will cease to apply because they have not measured a 
current violation of the 1-hour standard. For all other areas, the 1-
hour standard will continue to apply. Furthermore, this action is being 
done to assist in the phasing-out of the 1-hour standard since the 
recently promulgated new 8-hour standard is now in effect and is more 
protective of public health than the 1-hour ozone standard. The goal is 
to move toward implementation of the new 8-hour standard. Following 
today's action, the Agency intends to publish, in early 1998, a 
subsequent document which takes similar action to revoke the 1-hour 
standard in additional areas that have air quality that does not 
violate the 1-hour standard. Furthermore, the Agency will publish, on 
an annual basis, similar actions identifying areas where the 1-hour 
standard is no longer applicable.

DATES: This regulation will become effective on March 17, 1998 unless 
adverse comments are received during the public comment period. Written 
comments on this rulemaking must be limited to addressing the technical 
correctness of these determinations. All comments must be received on 
or before February 17, 1998. If adverse comments are timely received on 
any provision of the direct final rule, that provision will be 
withdrawn and only those provisions on which no such adverse comments 
are received will become effective on March 17, 1998.

ADDRESSES: Documents relevant to this rulemaking are available for 
inspection at the Air and Radiation Docket and Information Center 
(6101), Attention: Docket No. A-97-42, U.S. Environmental Protection 
Agency, 401 M Street SW, Room M-1500, Washington, DC 20460, telephone 
(202) 260-7548, between 8:00 a.m. and 4:00 p.m., Monday through Friday, 
excluding legal holidays. A reasonable fee may be charged for copying. 
Comments and data may also be submitted electronically by following the 
instructions under SUPPLEMENTARY INFORMATION of this document. No 
Confidential Business Information (CBI) should be submitted through e-
mail.

FOR FURTHER INFORMATION CONTACT: Questions concerning this notice 
should be addressed to Annie Nikbakht (policy) or Barry Gilbert (air 
quality data), Office of Air Quality Planning and Standards, Air 
Quality Strategies and Standards Division, Ozone Policy and Strategies 
Group, MD-15, Research Triangle Park, NC 27711, telephone (919) 541-
5246/5238. In addition, the following Regional Contacts may be called 
for individual information regarding monitoring data and policy matters 
specific for each Regional Office's geographic area:

Region I--Richard P. Burkhart, (617) 565-3578
Region II--Ray Werner, (212) 637-3706
Region III--Marcia Spink, (215) 566-2104
Region IV--Kay Prince, (404) 562-9026
Region V--Todd Nettesheim, (312) 353-9153
Region VI--Lt. Mick Cote, (214) 665-7219
Region VII--Royan Teter, (913) 551-7609
Region VIII--Tim Russ, (303) 312-6479
Region IX--Morris Goldberg,(AIR 7), (415) 744-1296
Region X--William Puckett, (206) 553-1702

SUPPLEMENTARY INFORMATION: Electronic Availability--The official record 
for this rulemaking, as well as the public version, has been 
established under docket number A-97-42 (including comments and data 
submitted electronically as described below). A public version of this 
record, including printed, paper versions of electronic comments, which 
does not include any information claimed as CBI, is available for 
inspection from 8:00 a.m. to 4:00 p.m., Monday through Friday, 
excluding legal holidays. The official rulemaking record is located at 
the address in ADDRESSES at the beginning of this document. Electronic 
comments can be sent directly to EPA at: A-and-R-
D[email protected]. Electronic comments must be submitted as an 
ASCII file avoiding the use of special characters and any form of 
encryption. Comments and data will also be accepted on disks in 
WordPerfect in 5.1 file format or ASCII file format. All comments and 
data in electronic form must be identified by the docket number A-97-
42. Electronic comments on this direct final rule may be filed online 
at many Federal Depository Libraries.
    If adverse comments are timely received on any provision of this 
direct final rule, all such comments will be addressed in a subsequent 
final rule based on those provisions of the proposed rule contained in 
the Proposed Rules Section of this Federal Register that is identical 
to this direct final rule. Such provisions will be withdrawn from the 
Direct Final Rule.

Table of Contents

I. Background
II. Summary of Today's Action
III. Analysis of Air Quality Data
IV. Tables
V. Other Regulatory Requirements
    A. Executive Order 12866
    B. Regulatory Flexibility Act
    C. Unfunded Mandates
    D. Submission to Congress and the General Accounting Office
    E. Petitions for Judicial Review

I. Background

    On November 6, 1991, the Agency issued a rulemaking (56 FR 56694) 
which set forth the attainment status, including designations and 
classifications, for selected areas affected by ozone, carbon monoxide, 
particulate matter, and lead national ambient air quality standards 
(NAAQS). That rulemaking established on a State-by-State, pollutant-by-
pollutant basis, the attainment status of the above-mentioned NAAQS. 
Such air quality data used in the determinations for the rulemaking 
were submitted by the appropriate States; the data were approved and 
the areas were then designated and classified by the EPA. Subsequent to 
the November 6, 1991 action, on November 30, 1992, the Agency issued 
corrections (57 FR 56762) to the tables for some of the designations, 
boundaries, and classifications as provided for under section 110(k)(6) 
of the Clean Air Act (CAA).
    Under the CAA, designations can be changed if sufficient data are 
available to warrant such changes and if certain other requirements are 
met (see CAA section 107(d)(3)(D)). Section 107(d)(3)(E) of the CAA 
provides that the Administrator may promulgate a redesignation of a 
nonattainment area to attainment if certain criteria are met. Such has 
been the case for several ozone nonattainment areas which have been 
redesignated to attainment over the

[[Page 2727]]

course of years following the CAA Amendments of 1990. The Agency has 
promulgated these redesignations to attainment in the Federal Register 
and thus has amended 40 CFR parts 52 and 81 accordingly.
    On July 16, 1997, the President issued a memorandum (62 FR 38421, 
July 18, 1997) to the Administrator of the EPA which indicates that 
within 90 days of promulgation of the new 8-hour standard, the EPA will 
publish an action identifying ozone areas to which the 1-hour standard 
will cease to apply. The memorandum states that for areas where the air 
quality does not currently attain the 1-hour standard, the 1-hour 
standard will continue in effect. The provisions of subpart 2 of title 
I of the CAA would also apply to currently designated nonattainment 
areas until such time as each area has air quality meeting the 1-hour 
standard.
    On July 18, 1997 (62 FR 38856), EPA promulgated a regulation 
replacing the 1-hour ozone standard with an 8-hour standard at a level 
of 0.08 parts per million (ppm). The form of the 8-hour standard is 
based on the 3-year average of the annual fourth-highest daily maximum 
8-hour average ozone concentrations measured at each monitor within an 
area. The new primary standard which became effective on September 16, 
1997 will provide increased protection to the public, especially 
children and other at-risk populations. On July 18, 1997, EPA also 
announced that revocation of the 1-hour ozone NAAQS would be delayed 
until areas achieved attainment of the 1-hour NAAQS. This was done in 
order to facilitate continuity in public health protection during the 
transition to the new NAAQS.

II. Summary of Today's Action

    The purpose of this document is to revoke the 1-hour standard in 
those areas that EPA has determined are not violating the 1-hour 
standard. For all other areas the 1-hour standard will continue in 
effect. The purpose of retaining the current standard for such areas is 
to ensure a smooth transition to the new standard. When the areas not 
meeting the 1-hour standard have air quality that meets the 1-hour 
standard, as determined by EPA, then the Agency will likewise revoke 
the 1-hour standard for such areas.
    In the immediate future, the Agency intends to issue guidance 
regarding the regulatory implications of today's action (revoking the 
1-hour standard) as related to those areas where the 1-hour standard is 
no longer applicable.

III. Analysis of Air Quality Data

    This action, revoking the 1-hour standard in selected areas, is 
based upon analysis of quality-assured, ambient air quality monitoring 
data showing no violations of the 1-hour ozone standard. The method for 
determining attainment of the ozone NAAQS is contained in 40 CFR part 
50.9 and Appendix H to that section. The level of the 1-hour primary 
and secondary NAAQS for ozone is 0.12 ppm.
    The 1-hour standard no longer applies to an area once EPA 
determines that the area has air quality not violating the 1-hour 
standard. Determinations for this notice were based upon the most 
recent data available, generally 1994-1996 data. The Agency did use 
1997 air quality data where violations were documented during the early 
portion of the 1997 ozone season. In order to revoke the 1-hour 
standard based upon 1995-1997 air quality data, measurements 
encompassing the complete ozone season would need to be available and 
examined. Therefore, after today's action, the Agency intends to 
publish, in early 1998, a subsequent notice which takes similar action 
to revoke the 1-hour standard in additional areas that have air quality 
data for 1995-1997 that do not violate the 1-hour standard. Detailed 
air quality data information used for today's determinations is 
contained in the Technical Support Document (TSD) to Docket No. A-97-
42.

IV. Tables

    The ozone tables codified in today's action are significantly 
different from the tables now included in 40 CFR part 81. The current 
40 CFR part 81 designation listings (revised as of November 6, 1991) 
include, by State and NAAQS pollutant, a brief description of areas 
within the State and their respective designation. Today's action 
includes completely new tables for ozone which indicate areas where the 
1-hour standard no longer applies, as well as where the 1-hour standard 
remains in effect.

V. Other Regulatory Requirements

A. Executive Order 12866

    The Office of Management and Budget (OMB) has exempted this 
regulatory action from Executive Order 12866 review.

B. Regulatory Flexibility Act

    Under the Regulatory Flexibility Act, 5 U.S.C. 600 et seq., EPA 
must prepare a regulatory flexibility analysis assessing the impact of 
any proposed or final rule on small entities (5 U.S.C. 603 and 604). 
Alternatively, EPA may certify that the rule will not have a 
significant impact on a substantial number of small entities. Small 
entities include small businesses, small not-for-profit enterprises, 
and government entities with jurisdiction over populations of less than 
50,000. The EPA is certifying that this rule will not have a 
significant impact on a substantial number of small entities.

C. Unfunded Mandates

    Under Section 202 of the Unfunded Mandates Reform Act of 1995 
(``Unfunded Mandates Act''), signed into law on March 22, 1995, EPA 
must prepare a budgetary impact statement to accompany any proposed or 
final rule that includes a Federal mandate that may result in estimated 
costs to State, local, or tribal governments in the aggregate; or to 
private sector, of $100 million or more. Under Section 205, EPA must 
select the most cost-effective and least burdensome alternative that 
achieves the objectives of the rule and is consistent with statutory 
requirements. Section 203 requires EPA to establish a plan for 
informing and advising any small governments that may be significantly 
or uniquely impacted by the rule.
    The EPA has determined that the approval action promulgated does 
not include a Federal mandate that may result in estimated costs of 
$100 million or more to either State, local, or tribal governments in 
the aggregate, or to the private sector. This Federal action imposes no 
new requirements. Accordingly, no additional costs to State, local, or 
tribal governments, or to the private sector, result from this action.

D. Submission to Congress and the General Accounting Office

    Under 5 U.S.C. 801(a)(1)(A), as added by the Small Business 
Regulatory Enforcement Fairness Act of 1996, EPA submitted a report 
containing this rule and other required information to the U.S. Senate, 
the U.S. House of Representatives and the Comptroller General of the 
General Accounting Office prior to publication of the rule in today's 
Federal Register. This rule is not a ``major rule'' as defined by 5 
U.S.C. 804(2).

E. Petitions for Judicial Review

    Under section 307(b)(1) of the CAA, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by May 18, 1998. Filing a petition for 
reconsideration by the

[[Page 2728]]

Administrator of this final rule does not affect the finality of this 
rule for the purposes of judicial review nor does it extend the time 
within which a petition for judicial review may be filed, and shall not 
postpone the effectiveness of such rule or action. This action may not 
be challenged later in proceedings to enforce its requirements (see 
section 307(b)(2)).

List of Subjects in 40 CFR Part 81

    Air pollution control, National parks, Wilderness areas.

    Dated: December 29, 1997.
Carol M. Browner,
Administrator.
    For the reasons set out in the preamble, title 40, chapter I of the 
Code of Federal Regulations is amended as follows:


PART 81--[AMENDED]

    1. The authority citation for part 81 continues to read as follows:

    Authority: 42 U.S.C. 7401-7671q.

    2. In Sec. 81.301, the table entitled ``Alabama--Ozone'' is revised 
to read as follows:


Sec. 81.301  Alabama.

* * * * *

                                                            Alabama--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Birmingham Area:                                                                                                                                        
    Jefferson County....................     11/15/90  Nonattainment............................     11/15/90  Marginal.                                
    Shelby County.......................     11/15/90  Nonattainment............................     11/15/90  Marginal.                                
Rest of State...........................  ...........  1 hr. std. N.A.\2\                                                                               
    Autauga County                                                                                                                                      
    Baldwin County                                                                                                                                      
    Barbour County                                                                                                                                      
    Bibb County                                                                                                                                         
    Blount County                                                                                                                                       
    Bullock County                                                                                                                                      
    Butler County                                                                                                                                       
    Calhoun County                                                                                                                                      
    Chambers County                                                                                                                                     
    Chilton County                                                                                                                                      
    Choctaw County                                                                                                                                      
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Cleburne County                                                                                                                                     
    Coffee County                                                                                                                                       
    Colbert County                                                                                                                                      
    Conecuh County                                                                                                                                      
    Coosa County                                                                                                                                        
    Covington County                                                                                                                                    
    Crenshaw County                                                                                                                                     
    Cullman County                                                                                                                                      
    Dale County                                                                                                                                         
    Dallas County                                                                                                                                       
    De Kalb County                                                                                                                                      
    Elmore County                                                                                                                                       
    Escambia County                                                                                                                                     
    Etowah County                                                                                                                                       
    Fayette County                                                                                                                                      
    Franklin County                                                                                                                                     
    Geneva County                                                                                                                                       
    Greene County                                                                                                                                       
    Hale County                                                                                                                                         
    Henry County                                                                                                                                        
    Houston County                                                                                                                                      
    Jackson County                                                                                                                                      
    Lamar County                                                                                                                                        
    Lauderdale County                                                                                                                                   
    Lawrence County                                                                                                                                     
    Lee County                                                                                                                                          
    Limestone County                                                                                                                                    
    Lowndes County                                                                                                                                      
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Marengo County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Mobile County                                                                                                                                       

[[Page 2729]]

                                                                                                                                                        
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Morgan County                                                                                                                                       
    Perry County                                                                                                                                        
    Pickens County                                                                                                                                      
    Pike County                                                                                                                                         
    Randolph County                                                                                                                                     
    Russell County                                                                                                                                      
    St. Clair County                                                                                                                                    
    Sumter County                                                                                                                                       
    Talladega County                                                                                                                                    
    Tallapoosa County                                                                                                                                   
    Tuscaloosa County                                                                                                                                   
    Walker County                                                                                                                                       
    Washington County                                                                                                                                   
    Wilcox County                                                                                                                                       
    Winston County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    3. In Sec. 81.302, the table entitled ``Alaska--Ozone'' is revised 
to read as follows:


Sec. 81.302  Alaska.

* * * * * * *

                                                             Alaska--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                    Type \2\                    Date \1\                    Type \2\                
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                                                        
                                                                                                                                                        
AQCR 08 Cook Inlet Intrastate...........  ...........  1 hr. std. N.A.\2\                                                                               
    Anchorage Election District                                                                                                                         
    Kenai Penninsula Election District                                                                                                                  
    Matanuska-Susitna Election District                                                                                                                 
    Seward Election District                                                                                                                            
AQCR 09 Northern Alaska Intrastate......  ...........  1 hr. std. N.A.\2\                                                                               
    Barrow Election District                                                                                                                            
    Fairbanks Election District                                                                                                                         
    Kobuk Election District                                                                                                                             
    Nome Election District                                                                                                                              
    North Slope Election District                                                                                                                       
    Northwest Arctic Borough                                                                                                                            
    Southeast Fairbanks Election                                                                                                                        
     District                                                                                                                                           
    Upper Yukon Election District                                                                                                                       
    Yukon-Koyukuk Election District                                                                                                                     
AQCR 10 South Central Alaska Intrastate.  ...........  1 hr. std. N.A.\2\                                                                               
    Aleutian Islands Election District                                                                                                                  
    Aleutians East Borough                                                                                                                              
    Aleutians West Census                                                                                                                               
    Bethel Election District                                                                                                                            
    Bristol Bay Borough Election                                                                                                                        
     District                                                                                                                                           
    Bristol Bay Election District                                                                                                                       
    Cordova-McCarthy Election District                                                                                                                  
    Dillingham Election District                                                                                                                        
    Kodiak Island Election District                                                                                                                     
    Kuskokwim Election District                                                                                                                         
    Valdez-Cordova Election District                                                                                                                    
    Wade Hampton Election District                                                                                                                      
AQCR 11 Southeastern Alaska Intrastate..  ...........  1 hr. std. N.A.\2\                                                                               
    Angoon Election District                                                                                                                            
    Haines Election District                                                                                                                            
    Juneau Election District                                                                                                                            
    Ketchikan Election District                                                                                                                         
    Outer Ketchikan Election District                                                                                                                   
    Prince Of Wales Election District                                                                                                                   
    Sitka Election District                                                                                                                             

[[Page 2730]]

                                                                                                                                                        
    Skagway-Yakutat Election District                                                                                                                   
    Wrangell-Petersburg Election                                                                                                                        
     District                                                                                                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    4. In Sec. 81.303, the table entitled ``Arizona--Ozone'' is revised 
to read as follows:


Sec. 81.303  Arizona.

* * * * * * *

                                                             Arizona-Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Phoenix Area:                                                                                                                                           
    Maricopa County (part)..............     11/15/90  Nonattainment............................     12/08/97  Serious.                                 
    The Urban Planning Area of the                                                                                                                      
     Maricopa Association of Governments                                                                                                                
     is bounded as follows:                                                                                                                             
        1. Commencing at a point which                                                                                                                  
         is at the intersection of the                                                                                                                  
         eastern line of Range 7 East,                                                                                                                  
         Gila and Salt River Baseline                                                                                                                   
         and Meridian, and the southern                                                                                                                 
         line of Township 2 South, said                                                                                                                 
         point is the southeastern                                                                                                                      
         corner of the Maricopa                                                                                                                         
         Association of Governments                                                                                                                     
         Urban Planning Area, which is                                                                                                                  
         the point of beginning;                                                                                                                        
        2. thence, proceed northerly                                                                                                                    
         along the eastern line of Range                                                                                                                
         7 East, which is the common                                                                                                                    
         boundary between Maricopa and                                                                                                                  
         Pinal Counties, as described in                                                                                                                
         Arizona Revised Statute Section                                                                                                                
         11-109, to a point where the                                                                                                                   
         eastern line of Range 7 East                                                                                                                   
         intersects the northern line of                                                                                                                
         Township 1 North, said point is                                                                                                                
         also the intersection of the                                                                                                                   
         Maricopa County Line and the                                                                                                                   
         Tonto National Forest Boundary,                                                                                                                
         as established by Executive                                                                                                                    
         Order 869 dated July 1, 1908,                                                                                                                  
         as amended and shown on the                                                                                                                    
         U.S. Forest Service 1969                                                                                                                       
         Planimetric Maps;                                                                                                                              
        3. thence, westerly along the                                                                                                                   
         northern line of Township 1                                                                                                                    
         North to approximately the                                                                                                                     
         southwest corner of the                                                                                                                        
         southeast quarter of Section                                                                                                                   
         35, Township 2 North, Range 7                                                                                                                  
         East, said point being the                                                                                                                     
         boundary of the Tonto National                                                                                                                 
         Forest and Usery Mountain Semi-                                                                                                                
         Regional Park;                                                                                                                                 
        4. thence, northerly along the                                                                                                                  
         Tonto National Forest Boundary,                                                                                                                
         which is generally the western                                                                                                                 
         line of the east half of                                                                                                                       
         Sections 26 and 35 of Township                                                                                                                 
         2 North, Range 7 East, to a                                                                                                                    
         point which is where the                                                                                                                       
         quarter section line intersects                                                                                                                
         with the northern line of                                                                                                                      
         Section 26, Township 2 North,                                                                                                                  
         Range 7 East, said point also                                                                                                                  
         being the northeast corner of                                                                                                                  
         the Usery Mountain Semi-                                                                                                                       
         Regional Park;                                                                                                                                 
        5. thence, westerly along the                                                                                                                   
         Tonto National Forest Boundary,                                                                                                                
         which is generally the south                                                                                                                   
         line of Sections 19, 20, 21 and                                                                                                                
         22 and the southern line of the                                                                                                                
         west half of Section 23,                                                                                                                       
         Township 2 North, Range 7 East,                                                                                                                
         to a point which is the                                                                                                                        
         southwest corner of Section 19,                                                                                                                
         Township 2 North, Range 7 East;                                                                                                                
        6. thence, northerly along the                                                                                                                  
         Tonto National Forest Boundary                                                                                                                 
         to a point where the Tonto                                                                                                                     
         National Forest Boundary                                                                                                                       
         intersects with the eastern                                                                                                                    
         boundary of the Salt River                                                                                                                     
         Indian Reservation, generally                                                                                                                  
         described as the center line of                                                                                                                
         the Salt River Channel;                                                                                                                        

[[Page 2731]]

                                                                                                                                                        
        7. thence, northeasterly and                                                                                                                    
         northerly along the common                                                                                                                     
         boundary of the Tonto National                                                                                                                 
         Forest and the Salt River                                                                                                                      
         Indian Reservation to a point                                                                                                                  
         which is the northeast corner                                                                                                                  
         of the Salt River Indian                                                                                                                       
         Reservation, and the southeast                                                                                                                 
         corner of the Fort McDowell                                                                                                                    
         Indian Reservation, as shown on                                                                                                                
         the plat dated July 22, 1902,                                                                                                                  
         and recorded with the U.S.                                                                                                                     
         Government on June 15, 1902;                                                                                                                   
        8. thence, northeasterly along                                                                                                                  
         the common boundary between the                                                                                                                
         Tonto National Forest and the                                                                                                                  
         Fort McDowell Indian                                                                                                                           
         Reservation to a point which is                                                                                                                
         the northeast corner of the                                                                                                                    
         Fort McDowell Indian                                                                                                                           
         Reservation;                                                                                                                                   
        9. thence, southwesterly along                                                                                                                  
         the northern boundary of the                                                                                                                   
         Fort McDowell Indian                                                                                                                           
         Reservation, which line is a                                                                                                                   
         common boundary with the Tonto                                                                                                                 
         National Forest, to a point                                                                                                                    
         where the boundary intersects                                                                                                                  
         with the eastern line of                                                                                                                       
         Section 12, Township 4 North,                                                                                                                  
         Range 6 East;                                                                                                                                  
        10. thence, northerly along the                                                                                                                 
         eastern line of Range 6 East to                                                                                                                
         a point where the eastern line                                                                                                                 
         of Range 6 East intersects with                                                                                                                
         the southern line of Township 5                                                                                                                
         North, said line is the                                                                                                                        
         boundary between the Tonto                                                                                                                     
         National Forest and the east                                                                                                                   
         boundary of the McDowell                                                                                                                       
         Mountain Regional Park;                                                                                                                        
        11. thence, westerly along the                                                                                                                  
         southern line of Township 5                                                                                                                    
         North to a point where the                                                                                                                     
         southern line intersects with                                                                                                                  
         the eastern line of Range 5                                                                                                                    
         East which line is the boundary                                                                                                                
         of Tonto National Forest and                                                                                                                   
         the north boundary of McDowell                                                                                                                 
         Mountain Regional Park;                                                                                                                        
        12. thence, northerly along the                                                                                                                 
         eastern line of Range 5 East to                                                                                                                
         a point where the eastern line                                                                                                                 
         of Range 5 East intersects with                                                                                                                
         the northern line of Township 5                                                                                                                
         North, which line is the                                                                                                                       
         boundary of the Tonto National                                                                                                                 
         Forest;                                                                                                                                        
        13. thence, westerly along the                                                                                                                  
         northern line of Township 5                                                                                                                    
         North to a point where the                                                                                                                     
         northern line of Township 5                                                                                                                    
         North intersects with the                                                                                                                      
         easterly line of Range 4 East,                                                                                                                 
         said line is the boundary of                                                                                                                   
         the Tonto National Forest;                                                                                                                     
        14. thence, northerly along the                                                                                                                 
         eastern line of Range 4 East to                                                                                                                
         a point where the eastern line                                                                                                                 
         of Range 4 East intersects with                                                                                                                
         the northern line of Township 6                                                                                                                
         North, which line is the                                                                                                                       
         boundary of the Tonto National                                                                                                                 
         Forest;                                                                                                                                        
        15. thence, westerly along the                                                                                                                  
         northern line of Township 6                                                                                                                    
         North to a point of                                                                                                                            
         intersection with the Maricopa-                                                                                                                
         Yavapai County line, which is                                                                                                                  
         generally described in Arizona                                                                                                                 
         Revised Statute Section 11-109                                                                                                                 
         as the center line of the Aqua                                                                                                                 
         Fria River (Also the north end                                                                                                                 
         of Lake Pleasant);                                                                                                                             
        16. thence, southwesterly and                                                                                                                   
         southerly along the Maricopa-                                                                                                                  
         Yavapai County line to a point                                                                                                                 
         which is described by Arizona                                                                                                                  
         Revised Statute Section 11-109                                                                                                                 
         as being on the center line of                                                                                                                 
         the Aqua Fria River, two miles                                                                                                                 
         southerly and below the mouth                                                                                                                  
         of Humbug Creek;                                                                                                                               
        17. thence, southerly along the                                                                                                                 
         center line of the Aqua Fria                                                                                                                   
         River to the intersection of                                                                                                                   
         the center line of the Aqua                                                                                                                    
         Fria River and the center line                                                                                                                 
         of Beardsley Canal, said point                                                                                                                 
         is generally in the northeast                                                                                                                  
         quarter of Section 17, Township                                                                                                                
         5 North, Range 1 East, as shown                                                                                                                
         on the U.S. Geological Survey's                                                                                                                
         Baldy Mountain, Arizona                                                                                                                        
         Quadrangle Map, 7.5 Minute                                                                                                                     
         series (Topographic), dated                                                                                                                    
         1964;                                                                                                                                          

[[Page 2732]]

                                                                                                                                                        
        18. thence, southwesterly and                                                                                                                   
         southerly along the center line                                                                                                                
         of Beardsley Canal to a point                                                                                                                  
         which is the center line of the                                                                                                                
         Beardsley Canal where it                                                                                                                       
         intersects with the center line                                                                                                                
         of Indian School Road;                                                                                                                         
        19. thence, westerly along the                                                                                                                  
         center line of West Indian                                                                                                                     
         School Road to a point where                                                                                                                   
         the center line of West Indian                                                                                                                 
         School Road intersects with the                                                                                                                
         center line of North Jackrabbit                                                                                                                
         Trail;                                                                                                                                         
        20. thence, southerly along the                                                                                                                 
         center line of Jackrabbit Trail                                                                                                                
         approximately nine and three-                                                                                                                  
         quarter miles to a point where                                                                                                                 
         the center line of Jackrabbit                                                                                                                  
         Trail intersects with the Gila                                                                                                                 
         River, said point is generally                                                                                                                 
         on the north-south quarter                                                                                                                     
         section line of Section 8,                                                                                                                     
         Township 1 South, Range 2 West;                                                                                                                
        21. thence, northeasterly and                                                                                                                   
         easterly up the Gila River to a                                                                                                                
         point where the Gila River                                                                                                                     
         intersects with the northern                                                                                                                   
         extension of the western                                                                                                                       
         boundary of Estrella Mountain                                                                                                                  
         Regional Park, which point is                                                                                                                  
         generally the quarter corner of                                                                                                                
         the northern line of Section                                                                                                                   
         31, Township 1 North, Range 1                                                                                                                  
         West;                                                                                                                                          
        22. thence, southerly along the                                                                                                                 
         extension of the western                                                                                                                       
         boundary and along the western                                                                                                                 
         boundary of Estrella Mountain                                                                                                                  
         Regional Park to a point where                                                                                                                 
         the southern extension of the                                                                                                                  
         western boundary of Estrella                                                                                                                   
         Mountain Regional Park                                                                                                                         
         intersects with the southern                                                                                                                   
         line of Township 1 South;                                                                                                                      
        23. thence, easterly along the                                                                                                                  
         southern line of Township 1                                                                                                                    
         South to a point where the                                                                                                                     
         south line of Township 1 South                                                                                                                 
         intersects with the western                                                                                                                    
         line of Range 1 East, which                                                                                                                    
         line is generally the southern                                                                                                                 
         boundary of Estrella Mountain                                                                                                                  
         Regional Park;                                                                                                                                 
        24. thence, southerly along the                                                                                                                 
         western line of Range 1 East to                                                                                                                
         the southwest corner of Section                                                                                                                
         18, Township 2 South, Range 1                                                                                                                  
         East, said line is the western                                                                                                                 
         boundary of the Gila River                                                                                                                     
         Indian Reservation;                                                                                                                            
        25. thence, easterly along the                                                                                                                  
         southern boundary of the Gila                                                                                                                  
         River Indian reservation, which                                                                                                                
         is the southern line of                                                                                                                        
         Sections 13, 14, 15, 16, 17 and                                                                                                                
         18, Township 2 South, Range 1                                                                                                                  
         East, to the boundary between                                                                                                                  
         Maricopa and Pinal Counties as                                                                                                                 
         described in Arizona Revised                                                                                                                   
         Statutes Section 11-109 and 11-                                                                                                                
         113, which is the eastern line                                                                                                                 
         of Range 1 East;                                                                                                                               
        26. thence, northerly along the                                                                                                                 
         eastern boundary of Range 1                                                                                                                    
         East, which is the common                                                                                                                      
         boundary between Maricopa and                                                                                                                  
         Pinal Counties, to a point                                                                                                                     
         where the eastern line of Range                                                                                                                
         1 East intersects the Gila                                                                                                                     
         River;                                                                                                                                         
        27. thence, southerly up the                                                                                                                    
         Gila River to a point where the                                                                                                                
         Gila River intersects with the                                                                                                                 
         southern line of Township 2                                                                                                                    
         South; and.                                                                                                                                    
        28. thence, easterly along the                                                                                                                  
         southern line of Township 2                                                                                                                    
         South to the point of beginning                                                                                                                
         which is a point where the                                                                                                                     
         southern line of Township 2                                                                                                                    
         South intersects with the                                                                                                                      
         eastern line of Range 7 East.                                                                                                                  
Tucson Area:                                                                                                                                            
    Pima County (part)                                                                                                                                  
        Tuscon area.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Rest of State.......................  ...........  1 hr. std. N.A.\2\                                                                               
        Apache County                                                                                                                                   
        Cochise County                                                                                                                                  
        Coconino County                                                                                                                                 
        Gila County                                                                                                                                     

[[Page 2733]]

                                                                                                                                                        
        Graham County                                                                                                                                   
        Greenlee County                                                                                                                                 
        La Paz County                                                                                                                                   
        Maricopa County (part)                                                                                                                          
            area outside of Phoenix                                                                                                                     
        Mohave County                                                                                                                                   
        Navajo County                                                                                                                                   
        Pima County (part)                                                                                                                              
            Remainder of county                                                                                                                         
        Pinal County                                                                                                                                    
        Santa Cruz County                                                                                                                               
        Yavapai County                                                                                                                                  
        Yuma County                                                                                                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    5. In Sec. 81.304, the table entitled ``Arkansas--Ozone'' is 
revised to read as follows:


Sec. 81.304  Arkansas.

* * * * * * *

                                                            Arkansas--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 016 Central Arkansas Intrastate      ...........  1 hr. std. N.A.\2\                                                                               
 (part)                                                                                                                                                 
    Pulaski County                                                                                                                                      
AQCR 016 Central Arkansas Intrastate      ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of)                                                                                                                                         
    Chicot County                                                                                                                                       
    Clark County                                                                                                                                        
    Cleveland County                                                                                                                                    
    Conway County                                                                                                                                       
    Dallas County                                                                                                                                       
    Desha County                                                                                                                                        
    Drew County                                                                                                                                         
    Faulkner County                                                                                                                                     
    Garland County                                                                                                                                      
    Grant County                                                                                                                                        
    Hot Spring County                                                                                                                                   
    Jefferson County                                                                                                                                    
    Lincoln County                                                                                                                                      
    Lonoke County                                                                                                                                       
    Perry County                                                                                                                                        
    Pope County                                                                                                                                         
    Saline County                                                                                                                                       
    Yell County                                                                                                                                         
AQCR 017 Metropolitan Fort Smith          ...........  1 hr. std. N.A.\2\                                                                               
 Interstate                                                                                                                                             
    Benton County                                                                                                                                       
    Crawford County                                                                                                                                     
    Sebastian County                                                                                                                                    
    Washington County                                                                                                                                   
AQCR 018 Metropolitan Memphis Interstate  ...........  1 hr. std. N.A.\2\                                                                               
    Crittenden County                                                                                                                                   
AQCR 019 Monroe-El Dorado Interstate      ...........  1 hr. std. N.A.\2\                                                                               
    Ashley County                                                                                                                                       
    Bradley County                                                                                                                                      
    Calhoun County                                                                                                                                      
    Nevada County                                                                                                                                       
    Ouachita County                                                                                                                                     
    Union County                                                                                                                                        
AQCR 020 Northeast Arkansas Intrastate    ...........  1 hr. std. N.A.\2\                                                                               
    Arkansas County                                                                                                                                     
    Clay County                                                                                                                                         
    Craighead County                                                                                                                                    
    Cross County                                                                                                                                        
    Greene County                                                                                                                                       
    Independence County                                                                                                                                 

[[Page 2734]]

                                                                                                                                                        
    Jackson County                                                                                                                                      
    Lawrence County                                                                                                                                     
    Lee County                                                                                                                                          
    Mississippi County                                                                                                                                  
    Monroe County                                                                                                                                       
    Phillips County                                                                                                                                     
    Poinsett County                                                                                                                                     
    Prairie County                                                                                                                                      
    Randolph County                                                                                                                                     
    Sharp County                                                                                                                                        
    St. Francis County                                                                                                                                  
    White County                                                                                                                                        
    Woodruff County                                                                                                                                     
AQCR 021 Northwest Arkansas Intrastate    ...........  1 hr. std. N.A.\2\                                                                               
    Baxter County                                                                                                                                       
    Boone County                                                                                                                                        
    Carroll County                                                                                                                                      
    Cleburne County                                                                                                                                     
    Franklin County                                                                                                                                     
    Fulton County                                                                                                                                       
    Izard County                                                                                                                                        
    Johnson County                                                                                                                                      
    Logan County                                                                                                                                        
    Madison County                                                                                                                                      
    Marion County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Newton County                                                                                                                                       
    Pike County                                                                                                                                         
    Polk County                                                                                                                                         
    Scott County                                                                                                                                        
    Searcy County                                                                                                                                       
    Stone County                                                                                                                                        
    Van Buren County                                                                                                                                    
AQCR 022 Shreveport-Texarkana-Tyler       ...........  1 hr. std. N.A.\2\                                                                               
 Interstate                                                                                                                                             
    Columbia County                                                                                                                                     
    Hempstead County                                                                                                                                    
    Howard County                                                                                                                                       
    Lafayette County                                                                                                                                    
    Little River County                                                                                                                                 
    Miller County                                                                                                                                       
    Sevier County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    6. In 81.305, the table entitled ``California--Ozone'' is revised 
to read as follows:


Sec. 81.305  California.

* * * * * * *

                                                           California--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Amador County Area......................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Calaveras County Area:                                                                                                                                  
    Calaveras County....................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Chico Area:                                                                                                                                             
    Butte County........................  ...........  1 hr. std. N.A.\2\                                                                               
Imperial County Area:                                                                                                                                   
    Imperial County.....................     11/15/90  Nonattainment............................     11/15/90  Sec. 185A Area.\3\                       
Los Angeles-South Coast Air Basin Area:                                                                                                                 
    Los Angeles County (part)--that          11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
     portion of Los Angeles County which                                                                                                                
     lies south and west of a line                                                                                                                      
     described as follows.                                                                                                                              

[[Page 2735]]

                                                                                                                                                        
        1. Beginning at the Los Angeles-                                                                                                                
         San Bernardino County boundary                                                                                                                 
         and running west along the                                                                                                                     
         Township line common to                                                                                                                        
         Township 3 North and Township 2                                                                                                                
         North, San Bernardino Base and                                                                                                                 
         Meridian;                                                                                                                                      
        2. then north along the range                                                                                                                   
         line common to Range 8 West and                                                                                                                
         Range 9 West;                                                                                                                                  
        3. then west along the Township                                                                                                                 
         line common to Township 4 North                                                                                                                
         and Township 3 North;                                                                                                                          
        4. then north along the range                                                                                                                   
         line common to Range 12 West                                                                                                                   
         and Range 13 West to the                                                                                                                       
         southeast corner of Section 12,                                                                                                                
         Township 5 North and Range 13                                                                                                                  
         West;                                                                                                                                          
        5. then west along the south                                                                                                                    
         boundaries of Sections 12, 11,                                                                                                                 
         10, 9, 8, and 7, Township 5                                                                                                                    
         North and Range 13 West to the                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest which is                                                                                                                       
         collinear with the range line                                                                                                                  
         common to Range 13 West and                                                                                                                    
         Range 14 West;                                                                                                                                 
        6. then north and west along the                                                                                                                
         Angeles National Forest                                                                                                                        
         boundary to the point of                                                                                                                       
         intersection with the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North (point is                                                                                                                 
         at the northwest corner of                                                                                                                     
         Section 4 in Township 6 North                                                                                                                  
         and Range 14 West);                                                                                                                            
        7. then west along the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North;                                                                                                                          
        8. then north along the range                                                                                                                   
         line common to Range 15 West                                                                                                                   
         and Range 16 West to the                                                                                                                       
         southeast corner of Section 13,                                                                                                                
         Township 7 North and Range 16                                                                                                                  
         West;                                                                                                                                          
        9. then along the south                                                                                                                         
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 7                                                                                                                 
         North and Range 16 West;                                                                                                                       
        10. then north along the range                                                                                                                  
         line common to Range 16 West                                                                                                                   
         and Range 17 West to the north                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest (collinear with                                                                                                                
         the Township line common to                                                                                                                    
         Township 8 North and Township 7                                                                                                                
         North);                                                                                                                                        
        11. then west along the Angeles                                                                                                                 
         National Forest boundary to the                                                                                                                
         point of intersection with the                                                                                                                 
         south boundary of the Rancho La                                                                                                                
         Liebre Land Grant;                                                                                                                             
        12. then west and north along                                                                                                                   
         this land grant boundary to the                                                                                                                
         Los Angeles-Kern County                                                                                                                        
         boundary.                                                                                                                                      
    Orange County.......................     11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
    Riverside County (part)--that            11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
     portion of Riverside County which                                                                                                                  
     lies to the west of a line                                                                                                                         
     described as follows.                                                                                                                              
        1. Beginning at the Riverside-                                                                                                                  
         San Diego County boundary and                                                                                                                  
         running north along the range                                                                                                                  
         line common to Range 4 East and                                                                                                                
         Range 3 East, San Bernardino                                                                                                                   
         Base and Meridian;                                                                                                                             
        2. then east along the Township                                                                                                                 
         line common to Township 8 South                                                                                                                
         and Township 7 South;                                                                                                                          
        3. then north along the range                                                                                                                   
         line common to Range 5 East and                                                                                                                
         Range 4 East;                                                                                                                                  
        4. then west along the Township                                                                                                                 
         line common to Township 6 South                                                                                                                
         and Township 7 South to the                                                                                                                    
         southwest corner of Section 34,                                                                                                                
         Township 6 South, Range 4 East;                                                                                                                
        5. then north along the west                                                                                                                    
         boundaries of Sections 34, 27,                                                                                                                 
         22, 15, 10, and 3, Township 6                                                                                                                  
         South, Range 4 East;                                                                                                                           
        6. then west along the Township                                                                                                                 
         line common to Township 5 South                                                                                                                
         and Township 6 South;                                                                                                                          
        7. then north along the range                                                                                                                   
         line common to Range 4 East and                                                                                                                
         Range 3 East;                                                                                                                                  

[[Page 2736]]

                                                                                                                                                        
        8. then west along the south                                                                                                                    
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 5                                                                                                                 
         South, Range 3 East;                                                                                                                           
        9. then north along the range                                                                                                                   
         line common to Range 2 East and                                                                                                                
         Range 3 East;                                                                                                                                  
        10. then west along the Township                                                                                                                
         line common to Township 4 South                                                                                                                
         and Township 3 South to the                                                                                                                    
         intersection of the southwest                                                                                                                  
         boundary of partial Section 31,                                                                                                                
         Township 3 South, Range 1 West;                                                                                                                
        11. then northwest along that                                                                                                                   
         line to the intersection with                                                                                                                  
         the range line common to Range                                                                                                                 
         2 West and Range 1 West;                                                                                                                       
        12. then north to the Riverside-                                                                                                                
         San Bernardino County line,                                                                                                                    
    San Bernardino County (part)--that       11/15/90  Nonattainment............................     11/15/90  Extreme.                                 
     portion of San Bernardino County                                                                                                                   
     which lies south and west of a line                                                                                                                
     described as follows.                                                                                                                              
        1. Beginning at the San                                                                                                                         
         Bernardino-Riverside County                                                                                                                    
         boundary and running north                                                                                                                     
         along the range line common to                                                                                                                 
         Range 3 East and Range 2 East,                                                                                                                 
         San Bernardino Base and                                                                                                                        
         Meridian;                                                                                                                                      
        2. then west along the Township                                                                                                                 
         line common to Township 3 North                                                                                                                
         and Township 2 North to the San                                                                                                                
         Bernardino-Los Angeles County                                                                                                                  
         boundary.                                                                                                                                      
Monterey Bay Area:                                                                                                                                      
    Monterey County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    San Benito County...................  ...........  1 hr. std. N.A.\2\                                                                               
    Santa Cruz County...................  ...........  1 hr. std. N.A.\2\                                                                               
Sacramento Metro Area:                                                                                                                                  
    El Dorado County (part).............     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
    All portions of the county except                                                                                                                   
     that portion of El Dorado County                                                                                                                   
     within the drainage area naturally                                                                                                                 
     tributary to Lake Tahoe including                                                                                                                  
     said Lake.                                                                                                                                         
    Placer County (part)................     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
    All portions of the county except                                                                                                                   
     that portion of Placer County                                                                                                                      
     within the drainage area naturally                                                                                                                 
     tributary to Lake Tahoe including                                                                                                                  
     said Lake, plus that area in the                                                                                                                   
     vicinity of the head of the Truckee                                                                                                                
     River described as follows:                                                                                                                        
     commencing at the point common to                                                                                                                  
     the aforementioned drainage area                                                                                                                   
     crestline and the line common to                                                                                                                   
     Townships 15 North and 16 North,                                                                                                                   
     Mount Diablo Base and Meridian                                                                                                                     
     (M.D.B.&M.), and following that                                                                                                                    
     line in a westerly direction to the                                                                                                                
     northwest corner of Section 3,                                                                                                                     
     Township 15 North, Range 16 East,                                                                                                                  
     M.D.B.&M., thence south along the                                                                                                                  
     west line of Sections 3 and 10,                                                                                                                    
     Township 15 North, Range 16 East,                                                                                                                  
     M.D.B.&M., to the intersection with                                                                                                                
     the said drainage area crestline,                                                                                                                  
     thence following the said drainage                                                                                                                 
     area boundary in a southeasterly,                                                                                                                  
     then northeasterly direction to and                                                                                                                
     along the Lake Tahoe Dam, thence                                                                                                                   
     following the said drainage area                                                                                                                   
     crestline in a northeasterly, then                                                                                                                 
     northwesterly direction to the                                                                                                                     
     point of beginning.                                                                                                                                
    Sacramento County...................     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
    Solano County (part) That portion of     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
     Solano County which lies north and                                                                                                                 
     east of a line described as follows.                                                                                                               

[[Page 2737]]

                                                                                                                                                        
        Description of boundary in                                                                                                                      
         Solano County between San                                                                                                                      
         Francisco and Sacramento:                                                                                                                      
         Beginning at the intersection                                                                                                                  
         of the westerly boundary of                                                                                                                    
         Solano County and the \1/4\                                                                                                                    
         section line running east and                                                                                                                  
         west through the center of                                                                                                                     
         Section 34; T. 6 N., R. 2 W.,                                                                                                                  
         M.D.B.&M., thence east along                                                                                                                   
         said \1/4\ section line to the                                                                                                                 
         east boundary of Section 36, T.                                                                                                                
         6 N., R. 2 W., thence south \1/                                                                                                                
         2\ mile and east 2.0 miles,                                                                                                                    
         more or less, along the west                                                                                                                   
         and south boundary of Los Putos                                                                                                                
         Rancho to the northwest corner                                                                                                                 
         of Section 4, T. 5 N., R. 1 W.,                                                                                                                
         thence east along a line common                                                                                                                
         to T. 5 N. and T. 6 N. to the                                                                                                                  
         northeast corner of Section 3,                                                                                                                 
         T. 5 N., R. 1 E., thence south                                                                                                                 
         along section lines to the                                                                                                                     
         southeast corner of Section 10,                                                                                                                
         T. 3 N., R. 1 E., thence east                                                                                                                  
         along section lines to the                                                                                                                     
         south \1/4\ corner of Section                                                                                                                  
         8, T. 3 N., R. 2 E., thence                                                                                                                    
         east to the boundary between                                                                                                                   
         Solano and Sacramento Counties.                                                                                                                
    Sutter County (part--southern            11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
     portion).                                                                                                                                          
        South of a line connecting the                                                                                                                  
         northern border of Yolo Co. to                                                                                                                 
         the SW tip of Yuba Co. and                                                                                                                     
         continuing along the southern                                                                                                                  
         Yuba County border to Placer                                                                                                                   
         County.                                                                                                                                        
    Yolo County.........................     11/15/90  Nonattainment............................       6/1/95  Severe-15.                               
San Diego Area:                                                                                                                                         
    San Diego County....................      2/21/95  Nonattainment............................      2/21/95  Serious.                                 
San Francisco-Bay Area:                                                                                                                                 
    Alameda County......................      6/21/95  Attainment                                                                                       
    Contra Costa County.................      6/21/95  Attainment                                                                                       
    Marin County........................      6/21/95  Attainment                                                                                       
    Napa County.........................      6/21/95  Attainment                                                                                       
    San Francisco County................      6/21/95  Attainment                                                                                       
    San Clara County....................      6/21/95  Attainment                                                                                       
    San Mateo County....................      6/21/95  Attainment                                                                                       
    Solano County (part)................      6/21/95  Attainment                                                                                       
        That portion of the county that                                                                                                                 
         lies south and west of the line                                                                                                                
         described that follows:                                                                                                                        
         Description of boundary in                                                                                                                     
         Solano County between San                                                                                                                      
         Francisco and Sacramento:                                                                                                                      
         Beginning at the intersection                                                                                                                  
         at the westerly boundary of                                                                                                                    
         Solano County and the \1/4\                                                                                                                    
         section line running east and                                                                                                                  
         west through the center of                                                                                                                     
         Section 34; T. 6 N., R. 2 W.,                                                                                                                  
         M.D.B.&M., thence east along                                                                                                                   
         said \1/2\ section line to the                                                                                                                 
         east boundary of Section 36, T.                                                                                                                
         6 N., R. 2 W., thence south \1/                                                                                                                
         2\ mile and east 2.0 miles,                                                                                                                    
         more or less, along the west                                                                                                                   
         and south boundary of Los Putos                                                                                                                
         Rancho to the northwest corner                                                                                                                 
         of Section 4, T. 5 N., R. 1 W,                                                                                                                 
         thence east along a line common                                                                                                                
         to T. 5 N., and T. 6 N. to the                                                                                                                 
         northeast corner of Section 3,                                                                                                                 
         T. 5 N., R. 1 E., thence south                                                                                                                 
         along section lines to the                                                                                                                     
         southeast corner of Section 10                                                                                                                 
         T. 3 N., R. 1 E., thence east                                                                                                                  
         along section lines to the                                                                                                                     
         south \1/4\ corner of Section 8                                                                                                                
         T. 3 N., R. 2 E., thence east                                                                                                                  
         to the boundary between Solano                                                                                                                 
         and Sacramento Counties.                                                                                                                       
    Sonoma County (part)................      6/21/95  Attainment                                                                                       
San Joaquin Valley Area:                                                                                                                                
    Fresno County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Kern County.........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Kings County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Madera County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Merced County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    San Joaquin County..................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Stanislaus County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Tulare County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Santa Barbara-Santa Maria-Lompoc Area:                                                                                                                  
    Santa Barbara County................     11/15/90  Nonattainment............................      1/09/98  Serious.                                 
Southeast Desert Modified AQMA Area:                                                                                                                    

[[Page 2738]]

                                                                                                                                                        
    Los Angeles County (part)--that          11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
     portion of Los Angeles County which                                                                                                                
     lies north and east of a line                                                                                                                      
     described as follows.                                                                                                                              
        1. Beginning at the Los Angeles-                                                                                                                
         San Bernardino County boundary                                                                                                                 
         and running west along the                                                                                                                     
         Township line common to                                                                                                                        
         Township 3 North and Township 2                                                                                                                
         North, San Bernardino Base and                                                                                                                 
         Meridian;                                                                                                                                      
        2. then north along the range                                                                                                                   
         line common to Range 8 West and                                                                                                                
         Range 9 West;                                                                                                                                  
        3. then west along the Township                                                                                                                 
         line common to Township 4 North                                                                                                                
         and Township 3 North;                                                                                                                          
        4. then north along the range                                                                                                                   
         line common to Range 12 West                                                                                                                   
         and Range 13 West to the                                                                                                                       
         southeast corner of Section 12,                                                                                                                
         Township 5 North and Range 13                                                                                                                  
         West;                                                                                                                                          
        5. then west along the south                                                                                                                    
         boundaries of Sections 12, 11,                                                                                                                 
         10, 9, 8, and 7, Township 5                                                                                                                    
         North and Range 13 West to the                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest which is                                                                                                                       
         collinear with the range line                                                                                                                  
         common to Range 13 West and                                                                                                                    
         Range 14 West;                                                                                                                                 
        6. then north and west along the                                                                                                                
         Angeles National Forest                                                                                                                        
         boundary to the point of                                                                                                                       
         intersection with the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North (point is                                                                                                                 
         at the northwest corner of                                                                                                                     
         Section 4 in Township 6 North                                                                                                                  
         and Range 14 West);                                                                                                                            
        7. then west along the Township                                                                                                                 
         line common to Township 7 North                                                                                                                
         and Township 6 North;                                                                                                                          
        8. then north along the range                                                                                                                   
         line common to Range 15 West                                                                                                                   
         and Range 16 West to the                                                                                                                       
         southeast corner of Section 13,                                                                                                                
         Township 7 North and Range 16                                                                                                                  
         West;                                                                                                                                          
        9. then along the south                                                                                                                         
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 7                                                                                                                 
         North and Range 16 West;                                                                                                                       
        10. then north along the range                                                                                                                  
         line common to Range 16 West                                                                                                                   
         and Range 17 West to the north                                                                                                                 
         boundary of the Angeles                                                                                                                        
         National Forest (collinear with                                                                                                                
         the Township line common to                                                                                                                    
         Township 8 North and Township 7                                                                                                                
         North);                                                                                                                                        
        11. then west along the Angeles                                                                                                                 
         National Forest boundary to the                                                                                                                
         point of intersection with the                                                                                                                 
         south boundary of the Rancho La                                                                                                                
         Liebre Land Grant;                                                                                                                             
        12. then west and north along                                                                                                                   
         this land grant boundary to the                                                                                                                
         Los Angeles-Kern County                                                                                                                        
         boundary.                                                                                                                                      
    Riverside County (part)--that            11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
     portion of Riverside County which                                                                                                                  
     lies to the east of a line                                                                                                                         
     described as follows.                                                                                                                              
        1. Beginning at the Riverside-                                                                                                                  
         San Diego County boundary and                                                                                                                  
         running north along the range                                                                                                                  
         line common to Range 4 East and                                                                                                                
         Range 3 East, San Bernardino                                                                                                                   
         Base and Meridian;                                                                                                                             
        2. then east along the Township                                                                                                                 
         line common to Township 8 South                                                                                                                
         and Township 7 South;                                                                                                                          
        3. then north along the range                                                                                                                   
         line common to Range 5 East and                                                                                                                
         Range 4 East;                                                                                                                                  
        4. then west along the Township                                                                                                                 
         line common to Township 6 South                                                                                                                
         and Township 7 South to the                                                                                                                    
         southwest corner of Section 34,                                                                                                                
         Township 6 South, Range 4 East;                                                                                                                
        5. then north along the west                                                                                                                    
         boundaries of Sections 34, 27,                                                                                                                 
         22, 15, 10, and 3, Township 6                                                                                                                  
         South, Range 4 East;                                                                                                                           
        6. then west along the Township                                                                                                                 
         line common to Township 5 South                                                                                                                
         and Township 6 South;                                                                                                                          
        7. then north along the range                                                                                                                   
         line common to Range 4 East and                                                                                                                
         Range 3 East;                                                                                                                                  

[[Page 2739]]

                                                                                                                                                        
        8. then west along the south                                                                                                                    
         boundaries of Sections 13, 14,                                                                                                                 
         15, 16, 17, and 18, Township 5                                                                                                                 
         South, Range 3 East;                                                                                                                           
        9. then north along the range                                                                                                                   
         line common to Range 2 East and                                                                                                                
         Range 3 East;                                                                                                                                  
        10. then west along the Township                                                                                                                
         line common to Township 4 South                                                                                                                
         and Township 3 South to the                                                                                                                    
         intersection of the southwest                                                                                                                  
         boundary of partial Section 31,                                                                                                                
         Township 3 South, Range 1 West;                                                                                                                
        11. then northwest along that                                                                                                                   
         line to the intersection with                                                                                                                  
         the range line common to Range                                                                                                                 
         2 West and Range 1 West;                                                                                                                       
        12. then north to the Riverside-                                                                                                                
         San Bernardino County line, and                                                                                                                
         that portion of Riverside                                                                                                                      
         County which lies to the west                                                                                                                  
         of a line described as follows:                                                                                                                
        13. beginning at the northeast                                                                                                                  
         corner of Section 4, Township 2                                                                                                                
         South, Range 5 East, a point on                                                                                                                
         the boundary line common to                                                                                                                    
         Riverside and San Bernardino                                                                                                                   
         Counties;                                                                                                                                      
        14. then southerly along section                                                                                                                
         lines to the centerline of the                                                                                                                 
         Colorado River Aquaduct;                                                                                                                       
        15. then southeasterly along the                                                                                                                
         centerline of said Colorado                                                                                                                    
         River Aquaduct to the southerly                                                                                                                
         line of Section 36, Township 3                                                                                                                 
         South, Range 7 East;                                                                                                                           
        16. then easterly along the                                                                                                                     
         Township line to the northeast                                                                                                                 
         corner of Section 6, Township 4                                                                                                                
         South, Range 9 East;                                                                                                                           
        17. then southerly along the                                                                                                                    
         easterly line of Section 6 to                                                                                                                  
         the southeast corner thereof;                                                                                                                  
        18. then easterly along section                                                                                                                 
         lines to the northeast corner                                                                                                                  
         of Section 10, Township 4                                                                                                                      
         South, Range 9 East;                                                                                                                           
        19. then southerly along section                                                                                                                
         lines to the southeast corner                                                                                                                  
         of Section 15, Township 4                                                                                                                      
         South, Range 9 East;                                                                                                                           
        20. then easterly along the                                                                                                                     
         section lines to the northeast                                                                                                                 
         corner of Section 21, Township                                                                                                                 
         4 South, Range 10 East;                                                                                                                        
        21. then southerly along the                                                                                                                    
         easterly line of Section 21 to                                                                                                                 
         the southeast corner thereof;                                                                                                                  
        22. then easterly along the                                                                                                                     
         northerly line of Section 27 to                                                                                                                
         the northeast corner thereof;                                                                                                                  
        23. then southerly along section                                                                                                                
         lines to the southeast corner                                                                                                                  
         of Section 34, Township 4                                                                                                                      
         South, Range 10 East;                                                                                                                          
        24. then easterly along the                                                                                                                     
         Township line to the northeast                                                                                                                 
         corner of Section 2, Township 5                                                                                                                
         South, Range 10 East;                                                                                                                          
        25. then southerly along the                                                                                                                    
         easterly line of Section 2, to                                                                                                                 
         the southeast corner thereof;                                                                                                                  
        26. then easterly along the                                                                                                                     
         northerly line of Section 12 to                                                                                                                
         the northeast corner thereof;                                                                                                                  
        27. then southerly along the                                                                                                                    
         range line to the southwest                                                                                                                    
         corner of Section 18, Township                                                                                                                 
         5 South, Range 11 East;                                                                                                                        
        28. then easterly along section                                                                                                                 
         lines to the northeast corner                                                                                                                  
         of Section 24, Township 5                                                                                                                      
         South, Range 11 East;                                                                                                                          
        29. then southerly along the                                                                                                                    
         range line to the southeast                                                                                                                    
         corner of Section 36, Township                                                                                                                 
         8 South, Range 11 East, a point                                                                                                                
         on the boundary line common to                                                                                                                 
         Riverside and San Diego                                                                                                                        
         Counties.                                                                                                                                      
    San Bernadino County (part)--that        11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
     portion of San Bernardino County                                                                                                                   
     which lies north and east of a line                                                                                                                
     described as follows.                                                                                                                              
        1. Beginning at the San                                                                                                                         
         Bernardino-Riverside County                                                                                                                    
         boundary and running north                                                                                                                     
         along the range line common to                                                                                                                 
         Range 3 East and Range 2 East,                                                                                                                 
         San Bernardino Base and                                                                                                                        
         Meridian;                                                                                                                                      

[[Page 2740]]

                                                                                                                                                        
        2. then west along the Township                                                                                                                 
         line common to Township 3 North                                                                                                                
         and Township 2 North to the San                                                                                                                
         Bernardino-Los Angeles County                                                                                                                  
         boundary; and that portion of                                                                                                                  
         San Bernardino County which                                                                                                                    
         lies south and west of a line                                                                                                                  
         described as follows:                                                                                                                          
        3. latitude 35 degrees, 10                                                                                                                      
         minutes north and longitude 115                                                                                                                
         degrees, 45 minutes west.                                                                                                                      
Ventura County Area:                                                                                                                                    
    Ventura County......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
Yuba City Area:                                                                                                                                         
    Sutter County (part--northern                                                                                                                       
     portion).                                                                                                                                          
        North of a line connecting the    ...........  1 hr. std. N.A.\2\                                                                               
         northern border of Yolo County                                                                                                                 
         to the SW tip of Yuba County                                                                                                                   
         and continuing along the                                                                                                                       
         southern Yuba County border to                                                                                                                 
         Placer County                                                                                                                                  
    Yuba County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Great Basin Valleys Air Basin...........  ...........  1 hr. std. N.A.\2\                                                                               
    Alpine County                                                                                                                                       
    Inyo County                                                                                                                                         
    Mono County                                                                                                                                         
Lake County Air Basin...................  ...........  1 hr. std. N.A.\2\                                                                               
    Lake County                                                                                                                                         
Lake Tahoe Air Basin....................  ...........  1 hr. std. N.A.\2\                                                                               
    El Dorado County (part)                                                                                                                             
        Lake Tahoe Area: As described                                                                                                                   
         under 40 CFR 81.275.                                                                                                                           
    Placer County (part)                                                                                                                                
        Lake Tahoe Area: As described                                                                                                                   
         under 40 CFR 81.275.                                                                                                                           
Mountain Counties Air Basin (Remainder                                                                                                                  
 of):                                                                                                                                                   
    Mariposa County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Nevada County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Plumas County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Sierra County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Tuolumne County.....................  ...........  1 hr. std. N.A.\2\                                                                               
North Coast Air Basin...................  ...........  1 hr. std. N.A.\2\                                                                               
    Del Norte County                                                                                                                                    
    Humboldt County                                                                                                                                     
    Mendocino County                                                                                                                                    
    Sonoma County (part)                                                                                                                                
        Remainder of County                                                                                                                             
    Trinity County                                                                                                                                      
Northeast Plateau Air Basin.............  ...........  1 hr. std. N.A.\2\                                                                               
    Lassen County                                                                                                                                       
    Modoc County                                                                                                                                        
    Siskiyou County                                                                                                                                     
Sacramento Valley Air Basin (Remainder                                                                                                                  
 of):                                                                                                                                                   
    Colusa County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Glenn County........................  ...........  1 hr. std. N.A.\2\                                                                               
    Shasta County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Tehama County.......................  ...........  1 hr. std. N.A.\2\                                                                               
South Central Coast Air Basin (Remainder                                                                                                                
 of):                                                                                                                                                   
    Channel Islands.....................  ...........  1 hr. std. N.A.\2\                                                                               
    San Luis Obispo County..............  ...........  1 hr. std. N.A.\2\                                                                               
Southeast Desert NON-AQMA:                                                                                                                              
    Riverside County (part)                                                                                                                             
        Remainder of County.............  ...........  1 hr. std. N.A.\2\                                                                               
    San Bernadino County (part).........                                                                                                                
        Remainder of County.............  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     
\3\ An area designated as an ozone nonattainment area as of the date of enactment of the CAAA of 1990 that did not violate the ozone NAAQS during the   
  period of 1987-1989.                                                                                                                                  

* * * * * * *
    7. In Sec. 81.306, the table entitled ``Colorado--Ozone'' is 
revised to read as follows:


Sec. 81.306  Colorado.

* * * * * * *

[[Page 2741]]



                                                            Colorado--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
            Designation area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Denver--Boulder Area:                                                                                                                                   
    Adams County (part)                                                                                                                                 
        West of Kiowa Creek.............  ...........  1 hr. std. N.A.\2\                                                                               
    Arapahoe County (part)                             .........................................                                                        
        West of Kiowa Creek.............  ...........  1 hr. std. N.A.\2\                                                                               
    Boulder County (part)                                                                                                                               
        excluding Rocky Mtn. National     ...........  1 hr. std. N.A. \2\                                                                              
         Park.                                                                                                                                          
    Denver County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Douglas County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Jefferson County....................  ...........  1 hr. std. N.A.\2\                                                                               
State AQCR 01...........................  ...........  1 hr. std. N.A. \2\                                                                              
    Logan County                                                                                                                                        
    Morgan County                                                                                                                                       
    Phillips County                                                                                                                                     
    Sedgwick County                                                                                                                                     
    Washington County                                                                                                                                   
    Yuma County                                                                                                                                         
State AQCR 02...........................  ...........  1 hr. std. N.A. \2\                                                                              
    Larimer County                                                                                                                                      
    Weld County                                                                                                                                         
State AQCR 03 (Remainder of)............  ...........  1 hr. std. N.A. \2\                                                                              
    Adams County (part)                                                                                                                                 
        East of Kiowa Creek                                                                                                                             
    Arapahoe County (part)                                                                                                                              
        East of Kiowa Creek                                                                                                                             
    Boulder County (part)                                                                                                                               
        Rocky Mtn. National Park Only                                                                                                                   
    Clear Creek County                                                                                                                                  
    Gilpin County                                                                                                                                       
State AQCR 11...........................  ...........  1 hr. std. N.A. \2\                                                                              
    Garfield County                                                                                                                                     
    Mesa County                                                                                                                                         
    Moffat County                                                                                                                                       
    Rio Blanco County                                                                                                                                   
Rest of State...........................  ...........  1 hr. std. N.A. \2\                                                                              
    Alamosa County                                                                                                                                      
    Archuleta County                                                                                                                                    
    Baca County                                                                                                                                         
    Bent County                                                                                                                                         
    Chaffee County                                                                                                                                      
    Cheyenne County                                                                                                                                     
    Conejos County                                                                                                                                      
    Costilla County                                                                                                                                     
    Crowley County                                                                                                                                      
    Custer County                                                                                                                                       
    Delta County                                                                                                                                        
    Dolores County                                                                                                                                      
    Eagle County                                                                                                                                        
    El Paso County                                                                                                                                      
    Elbert County                                                                                                                                       
    Fremont County                                                                                                                                      
    Grand County                                                                                                                                        
    Gunnison County                                                                                                                                     
    Hinsdale County                                                                                                                                     
    Huerfano County                                                                                                                                     
    Jackson County                                                                                                                                      
    Kiowa County                                                                                                                                        
    Kit Carson County                                                                                                                                   
    La Plata County                                                                                                                                     
    Lake County                                                                                                                                         
    Las Animas County                                                                                                                                   
    Lincoln County                                                                                                                                      
    Mineral County                                                                                                                                      
    Montezuma County                                                                                                                                    
    Montrose County                                                                                                                                     
    Otero County                                                                                                                                        
    Ouray County                                                                                                                                        
    Park County                                                                                                                                         
    Pitkin County                                                                                                                                       
    Prowers County                                                                                                                                      

[[Page 2742]]

                                                                                                                                                        
    Pueblo County                                                                                                                                       
    Rio Grande County                                                                                                                                   
    Routt County                                                                                                                                        
    Saguache County                                                                                                                                     
    San Juan County                                                                                                                                     
    San Miguel County                                                                                                                                   
    Summit County                                                                                                                                       
    Teller County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    8. In Sec. 81.307, the table entitled ``Connecticut--Ozone'' is 
revised to read as follows:


Sec. 81.307  Connecticut.

* * * * * * *

                                                          Connecticut--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Greater Connecticut Area:                                                                                                                               
    Fairfield County (part).............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        Shelton City                                                                                                                                    
    Hartford County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Litchfield County (part)............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        all cities and townships except:                                                                                                                
            Bridgewater Town, New                                                                                                                       
             Milford Town                                                                                                                               
    Middlesex County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    New Haven County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    New London County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Tolland County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Windham County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
New York-N. New Jersey-Long Island Area:                                                                                                                
    Fairfield County (part).............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
        all cities and towns except                                                                                                                     
         Shelton City                                                                                                                                   
    Litchfield County (part)............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
        Bridgewater Town, New Milford                                                                                                                   
         Town                                                                                                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                

* * * * * * *
    9. In Sec. 81.308, the table entitled ``Delaware--Ozone'' is 
revised to read as follows:


Sec. 81.308  Delaware.

* * * * * * *

                                                            Delaware--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Kent County.........................     11/15/90   Nonattainment...........................     11/15/90   Severe-15.                              
    New Castle County...................     11/15/90   Nonattainment...........................     11/15/90   Severe-15.                              
Sussex County Area:                                                                                                                                     
    Sussex County.......................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard not applicable.                                                                                                                     

* * * * * * *
    10. In Section 81.309, the table entitled ``District of Columbia--
Ozone'' is revised to read as follows:


Sec. 81.309  District of Columbia.

* * * * * * *

[[Page 2743]]



                                                      District of Columbia--Ozone (1-Hour Standard)                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Washington Area:                                                                                                                                        
    Washington                                                                                                                                          
        Entire Area.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                

* * * * * * *
    11. In Sec. 81.310, the table entitled ``Florida--Ozone'' is 
revised to read as follows:


Sec. 81.310  Florida.

* * * * * * *

                                                            Florida--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Alachua County                                                                                                                                      
    Baker County                                                                                                                                        
    Bay County                                                                                                                                          
    Bradford County                                                                                                                                     
    Brevard County                                                                                                                                      
    Broward County                                                                                                                                      
    Calhoun County                                                                                                                                      
    Charlotte County                                                                                                                                    
    Citrus County                                                                                                                                       
    Clay County                                                                                                                                         
    Collier County                                                                                                                                      
    Columbia County                                                                                                                                     
    Dade County                                                                                                                                         
    De Soto County                                                                                                                                      
    Dixie County                                                                                                                                        
    Duval County                                                                                                                                        
    Escambia County                                                                                                                                     
    Flagler County                                                                                                                                      
    Franklin County                                                                                                                                     
    Gadsden County                                                                                                                                      
    Gilchrist County                                                                                                                                    
    Glades County                                                                                                                                       
    Gulf County                                                                                                                                         
    Hamilton County                                                                                                                                     
    Hardee County                                                                                                                                       
    Hendry County                                                                                                                                       
    Hernando County                                                                                                                                     
    Highlands County                                                                                                                                    
    Hillsborough County                                                                                                                                 
    Holmes County                                                                                                                                       
    Indian River County                                                                                                                                 
    Jackson County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Lafayette County                                                                                                                                    
    Lake County                                                                                                                                         
    Lee County                                                                                                                                          
    Leon County                                                                                                                                         
    Levy County                                                                                                                                         
    Liberty County                                                                                                                                      
    Madison County                                                                                                                                      
    Manatee County                                                                                                                                      
    Marion County                                                                                                                                       
    Martin County                                                                                                                                       
    Monroe County                                                                                                                                       
    Nassau County                                                                                                                                       
    Okaloosa County                                                                                                                                     
    Okeechobee County                                                                                                                                   
    Orange County                                                                                                                                       
    Osceola County                                                                                                                                      
    Palm Beach County                                                                                                                                   
    Pasco County                                                                                                                                        
    Pinellas County                                                                                                                                     

[[Page 2744]]

                                                                                                                                                        
    Polk County                                                                                                                                         
    Putnam County                                                                                                                                       
    Santa Rosa County                                                                                                                                   
    Sarasota County                                                                                                                                     
    Seminole County                                                                                                                                     
    St. Johns County                                                                                                                                    
    St. Lucie County                                                                                                                                    
    Sumter County                                                                                                                                       
    Suwannee County                                                                                                                                     
    Taylor County                                                                                                                                       
    Union County                                                                                                                                        
    Volusia County                                                                                                                                      
    Wakulla County                                                                                                                                      
    Walton County                                                                                                                                       
    Washington County                                                                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    12. In Sec. 81.311, the table entitled ``Georgia--Ozone'' is 
revised to read as follows:


Sec. 81.311  Georgia.

* * * * * * *

                                                            Georgia--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Atlanta Area:                                                                                                                                           
    Cherokee County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Clayton County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Cobb County.........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Coweta County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    De Kalb County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Douglas County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Fayette County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Forsyth County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Fulton County.......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Gwinnett County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Henry County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Paulding County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Rockdale County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Spalding County Area:                                                                                                                                   
    Spalding County.....................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Rest of State...........................  ...........  1 hr. std. N.A.\2\                                                                               
    Appling County                                                                                                                                      
    Atkinson County                                                                                                                                     
    Bacon County                                                                                                                                        
    Baker County                                                                                                                                        
    Baldwin County                                                                                                                                      
    Banks County                                                                                                                                        
    Barrow County                                                                                                                                       
    Bartow County                                                                                                                                       
    Ben Hill County                                                                                                                                     
    Berrien County                                                                                                                                      
    Bibb County                                                                                                                                         
    Bleckley County                                                                                                                                     
    Brantley County                                                                                                                                     
    Brooks County                                                                                                                                       
    Bryan County                                                                                                                                        
    Bulloch County                                                                                                                                      
    Burke County                                                                                                                                        
    Butts County                                                                                                                                        
    Calhoun County                                                                                                                                      
    Camden County                                                                                                                                       
    Candler County                                                                                                                                      
    Carroll County                                                                                                                                      
    Catoosa County                                                                                                                                      

[[Page 2745]]

                                                                                                                                                        
    Charlton County                                                                                                                                     
    Chatham County                                                                                                                                      
    Chattahoochee County                                                                                                                                
    Chattooga County                                                                                                                                    
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Clinch County                                                                                                                                       
    Coffee County                                                                                                                                       
    Colquitt County                                                                                                                                     
    Columbia County                                                                                                                                     
    Cook County                                                                                                                                         
    Crawford County                                                                                                                                     
    Crisp County                                                                                                                                        
    Dade County                                                                                                                                         
    Dawson County                                                                                                                                       
    Decatur County                                                                                                                                      
    Dodge County                                                                                                                                        
    Dooly County                                                                                                                                        
    Dougherty County                                                                                                                                    
    Early County                                                                                                                                        
    Echols County                                                                                                                                       
    Effingham County                                                                                                                                    
    Elbert County                                                                                                                                       
    Emanuel County                                                                                                                                      
    Evans County                                                                                                                                        
    Fannin County                                                                                                                                       
    Floyd County                                                                                                                                        
    Franklin County                                                                                                                                     
    Gilmer County                                                                                                                                       
    Glascock County                                                                                                                                     
    Glynn County                                                                                                                                        
    Gordon County                                                                                                                                       
    Grady County                                                                                                                                        
    Greene County                                                                                                                                       
    Habersham County                                                                                                                                    
    Hall County                                                                                                                                         
    Hancock County                                                                                                                                      
    Haralson County                                                                                                                                     
    Harris County                                                                                                                                       
    Hart County                                                                                                                                         
    Heard County                                                                                                                                        
    Houston County                                                                                                                                      
    Irwin County                                                                                                                                        
    Jackson County                                                                                                                                      
    Jasper County                                                                                                                                       
    Jeff Davis County                                                                                                                                   
    Jefferson County                                                                                                                                    
    Jenkins County                                                                                                                                      
    Johnson County                                                                                                                                      
    Jones County                                                                                                                                        
    Lamar County                                                                                                                                        
    Lanier County                                                                                                                                       
    Laurens County                                                                                                                                      
    Lee County                                                                                                                                          
    Liberty County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Long County                                                                                                                                         
    Lowndes County                                                                                                                                      
    Lumpkin County                                                                                                                                      
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Marion County                                                                                                                                       
    McDuffie County                                                                                                                                     
    McIntosh County                                                                                                                                     
    Meriwether County                                                                                                                                   
    Miller County                                                                                                                                       
    Mitchell County                                                                                                                                     
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Morgan County                                                                                                                                       

[[Page 2746]]

                                                                                                                                                        
    Murray County                                                                                                                                       
    Muscogee County                                                                                                                                     
    Newton County                                                                                                                                       
    Oconee County                                                                                                                                       
    Oglethorpe County                                                                                                                                   
    Peach County                                                                                                                                        
    Pickens County                                                                                                                                      
    Pierce County                                                                                                                                       
    Pike County                                                                                                                                         
    Polk County                                                                                                                                         
    Pulaski County                                                                                                                                      
    Putnam County                                                                                                                                       
    Quitman County                                                                                                                                      
    Rabun County                                                                                                                                        
    Randolph County                                                                                                                                     
    Richmond County                                                                                                                                     
    Schley County                                                                                                                                       
    Screven County                                                                                                                                      
    Seminole County                                                                                                                                     
    Stephens County                                                                                                                                     
    Stewart County                                                                                                                                      
    Sumter County                                                                                                                                       
    Talbot County                                                                                                                                       
    Taliaferro County                                                                                                                                   
    Tattnall County                                                                                                                                     
    Taylor County                                                                                                                                       
    Telfair County                                                                                                                                      
    Terrell County                                                                                                                                      
    Thomas County                                                                                                                                       
    Tift County                                                                                                                                         
    Toombs County                                                                                                                                       
    Towns County                                                                                                                                        
    Treutlen County                                                                                                                                     
    Troup County                                                                                                                                        
    Turner County                                                                                                                                       
    Twiggs County                                                                                                                                       
    Union County                                                                                                                                        
    Upson County                                                                                                                                        
    Walker County                                                                                                                                       
    Walton County                                                                                                                                       
    Ware County                                                                                                                                         
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Wheeler County                                                                                                                                      
    White County                                                                                                                                        
    Whitfield County                                                                                                                                    
    Wilcox County                                                                                                                                       
    Wilkes County                                                                                                                                       
    Wilkinson County                                                                                                                                    
    Worth County                                                                                                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    13. In Sec. 81.312, the table entitled ``Hawaii--Ozone'' is revised 
to read as follows:


Sec. 81.312  Hawaii.

* * * * * * *

                                                             Hawaii--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Hawaii County                                                                                                                                       
    Honolulu County                                                                                                                                     

[[Page 2747]]

                                                                                                                                                        
    Kalawao                                                                                                                                             
    Kauai County                                                                                                                                        
    Maui County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
 \1\ This date is March 17, 1998, unless otherwise noted.                                                                                               
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    14. In Sec. 81.313, the table entitled ``Idaho--Ozone'' is revised 
to read as follows:


Sec. 81.313  Idaho.

* * * * * * *

                                                             Idaho--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 61 Eastern Idaho Intrastate........  ...........  1 hr. std. N.A.\2\                                                                               
    Bannock County                                                                                                                                      
    Bear Lake County                                                                                                                                    
    Bingham County                                                                                                                                      
    Bonneville County                                                                                                                                   
    Butte County                                                                                                                                        
    Caribou County                                                                                                                                      
    Clark County                                                                                                                                        
    Franklin County                                                                                                                                     
    Fremont County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Madison County                                                                                                                                      
    Oneida County                                                                                                                                       
    Power County                                                                                                                                        
    Teton County                                                                                                                                        
AQCR 62 E Washington-N Idaho Interstate.  ...........  1 hr. std. N.A.\2\.......................  ...........                                           
    Benewah County                                                                                                                                      
    Kootenai County                                                                                                                                     
    Latah County                                                                                                                                        
    Nez Perce County                                                                                                                                    
    Shoshone County                                                                                                                                     
AQCR 63 Idaho Intrastate................  ...........  1 hr. std. N.A.\2\.......................  ...........                                           
    Adams County                                                                                                                                        
    Blaine County                                                                                                                                       
    Boise County                                                                                                                                        
    Bonner County                                                                                                                                       
    Boundary County                                                                                                                                     
    Camas County                                                                                                                                        
    Cassia County                                                                                                                                       
    Clearwater County                                                                                                                                   
    Custer County                                                                                                                                       
    Elmore County                                                                                                                                       
    Gem County                                                                                                                                          
    Gooding County                                                                                                                                      
    Idaho County                                                                                                                                        
    Jerome County                                                                                                                                       
    Lemhi County                                                                                                                                        
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Minidoka County                                                                                                                                     
    Owyhee County                                                                                                                                       
    Payette County                                                                                                                                      
    Twin Falls County                                                                                                                                   
    Valley County                                                                                                                                       
    Washington County                                                                                                                                   
AQCR 64 Metropolitan Boise Interstate...  ...........  1 hr. std. N.A.\2\                                                                               
    Ada County                                                                                                                                          
    Canyon County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
 \1\ This date is March 17, 1998, unless otherwise noted.                                                                                               
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *

[[Page 2748]]

    15. In Sec. 81.314, the table entitled ``Illinois--Ozone'' is 
revised to read as follows:


Sec. 81.314  Illinois.

* * * * * * *

                                                            Illinois--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Chicago-Gary-Lake County Area:                                                                                                                          
    Cook County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Du Page County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Grundy County (part):                                                                                                                               
        Aux Sable Township..............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
        Goose Lake Township.............     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Kane County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Kendall County (part):                                                                                                                              
        Oswego Township.................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Lake County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    McHenry County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Will County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Jersey County Area:                                                                                                                                     
    Jersey County.......................  ...........  1 hr. std. N.A.\2\                                                                               
St. Louis Area:                                                                                                                                         
    Madison County......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Monroe County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St. Clair County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Adams County............................  ...........  1 hr. std. N.A.\2\                                                                               
Alexander County........................  ...........  1 hr. std. N.A.\2\                                                                               
Bond County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Boone County............................  ...........  1 hr. std. N.A.\2\                                                                               
Brown County............................  ...........  1 hr. std. N.A.\2\                                                                               
Bureau County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Calhoun County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Carroll County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Cass County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Champaign County........................  ...........  1 hr. std. N.A.\2\                                                                               
Christian County........................  ...........  1 hr. std. N.A.\2\                                                                               
Clark County............................  ...........  1 hr. std. N.A.\2\                                                                               
Clay County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Clinton County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Coles County............................  ...........  1 hr. std. N.A.\2\                                                                               
Crawford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Cumberland County.......................  ...........  1 hr. std. N.A.\2\                                                                               
De Kalb County..........................  ...........  1 hr. std. N.A.\2\                                                                               
De Witt County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Douglas County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Edgar County............................  ...........  1 hr. std. N.A.\2\                                                                               
Edwards County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Effingham County........................  ...........  1 hr. std. N.A.\2\                                                                               
Fayette County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Ford County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Franklin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Fulton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Gallatin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Greene County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Grundy County (part):                                                                                                                                   
    All townships except Aux Sable and    ...........  1 hr. std. N.A.\2\                                                                               
     Goose Lake.                                                                                                                                        
Hamilton County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Hancock County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Hardin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Henderson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Henry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Iroquois County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Jasper County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Jefferson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Jo Daviess County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Johnson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Kankakee County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Kendall County (part):                                                                                                                                  
    All townships except Oswego.........  ...........  1 hr. std. N.A.\2\                                                                               
Knox County.............................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2749]]

                                                                                                                                                        
La Salle County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Lawrence County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Lee County..............................  ...........  1 hr. std. N.A.\2\                                                                               
Livingston County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Logan County............................  ...........  1 hr. std. N.A.\2\                                                                               
Macon County............................  ...........  1 hr. std. N.A.\2\                                                                               
Macoupin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Marion County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Marshall County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Mason County............................  ...........  1 hr. std. N.A.\2\                                                                               
Massac County...........................  ...........  1 hr. std. N.A.\2\                                                                               
McDonough County........................  ...........  1 hr. std. N.A.\2\                                                                               
McLean County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Menard County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Mercer County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Montgomery County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Morgan County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Moultrie County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Ogle County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Peoria County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Perry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Piatt County............................  ...........  1 hr. std. N.A.\2\                                                                               
Pike County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Pope County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Pulaski County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Putnam County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Randolph County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Richland County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Rock Island County......................  ...........  1 hr. std. N.A.\2\                                                                               
Saline County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Sangamon County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Schuyler County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Scott County............................  ...........  1 hr. std. N.A.\2\                                                                               
Shelby County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Stark County............................  ...........  1 hr. std. N.A.\2\                                                                               
Stephenson County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Tazewell County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Union County............................  ...........  1 hr. std. N.A.\2\                                                                               
Vermilion County........................  ...........  1 hr. std. N.A.\2\                                                                               
Wabash County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Warren County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Washington County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Wayne County............................  ...........  1 hr. std. N.A.\2\                                                                               
White County............................  ...........  1 hr. std. N.A.\2\                                                                               
Whiteside County........................  ...........  1 hr. std. N.A.\2\                                                                               
Williamson County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Winnebago County........................  ...........  1 hr. std. N.A.\2\                                                                               
Woodford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    16. In Sec. 81.315, the table entitled ``Indiana--Ozone'' is 
revised to read as follows:


Sec. 81.315  Indiana.

* * * * * * *

                                                             Indiana-Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Chicago-Gary-Lake County Area:                                                                                                                          
    Lake County.........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Porter County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Evansville Area:                                                                                                                                        
    Vanderburgh County..................  ...........  1 hr. std. N.A.\2\                                                                               
Indianapolis Area:                                                                                                                                      
    Marion County.......................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2750]]

                                                                                                                                                        
La Porte County Area:                                                                                                                                   
    La Porte County.....................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Louisville Area:                                                                                                                                        
    Clark County........................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Floyd County........................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
South Bend-Elkhart Area:                                                                                                                                
    Elkhart County......................  ...........  1 hr. std. N.A.\2\                                                                               
    St. Joseph County...................  ...........  1 hr. std. N.A.\2\                                                                               
Warrick County Area:                                                                                                                                    
    Warrick County......................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Allen County............................  ...........  1 hr. std. N.A.\2\                                                                               
Adams County............................  ...........  1 hr. std. N.A.\2\                                                                               
Bartholomew County......................  ...........  1 hr. std. N.A.\2\                                                                               
Benton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Blackford County........................  ...........  1 hr. std. N.A.\2\                                                                               
Boone County............................  ...........  1 hr. std. N.A.\2\                                                                               
Brown County............................  ...........  1 hr. std. N.A.\2\                                                                               
Carroll County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Cass County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Clay County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Clinton County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Crawford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Daviess County..........................  ...........  1 hr. std. N.A.\2\                                                                               
De Kalb County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Dearborn County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Decatur County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Delaware County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Dubois County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Fayette County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Fountain County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Franklin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Fulton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Gibson County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Grant County............................  ...........  1 hr. std. N.A.\2\                                                                               
Greene County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Hamilton County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Hancock County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Harrison County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Hendricks County........................  ...........  1 hr. std. N.A.\2\                                                                               
Henry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Howard County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Huntington County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Jasper County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Jay County..............................  ...........  1 hr. std. N.A.\2\                                                                               
Jefferson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Jennings County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Johnson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Knox County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Kosciusko County........................  ...........  1 hr. std. N.A.\2\                                                                               
Lagrange County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Lawrence County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Madison County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Marshall County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Martin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Miami County............................  ...........  1 hr. std. N.A.\2\                                                                               
Monroe County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Montgomery County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Morgan County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Newton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Noble County............................  ...........  1 hr. std. N.A.\2\                                                                               
Ohio County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Orange County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Owen County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Parke County............................  ...........  1 hr. std. N.A.\2\                                                                               
Perry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Pike County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Posey County............................  ...........  1 hr. std. N.A.\2\                                                                               
Pulaski County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Putnam County...........................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2751]]

                                                                                                                                                        
Randolph County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Ripley County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Rush County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Scott County............................  ...........  1 hr. std. N.A.\2\                                                                               
Shelby County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Spencer County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Starke County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Steuben County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Sullivan County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Switzerland County......................  ...........  1 hr. std. N.A.\2\                                                                               
Tippecanoe County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Tipton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Union County............................  ...........  1 hr. std. N.A.\2\                                                                               
Vermillion County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Vigo County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Wabash County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Warren County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Washington County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Wayne County............................  ...........  1 hr. std. N.A.\2\                                                                               
Wells County............................  ...........  1 hr. std. N.A.\2\                                                                               
White County............................  ...........  1 hr. std. N.A.\2\                                                                               
Whitley County..........................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    17. In Sec. 81.316, the table entitled ``Iowa--Ozone'' is revised 
to read as follows:


Sec. 81.316  Iowa.

* * * * * * *

                                                              Iowa--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
            Designation area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Adair County                                                                                                                                        
    Adams County                                                                                                                                        
    Allamakee County                                                                                                                                    
    Appanoose County                                                                                                                                    
    Audubon County                                                                                                                                      
    Benton County                                                                                                                                       
    Black Hawk County                                                                                                                                   
    Boone County                                                                                                                                        
    Bremer County                                                                                                                                       
    Buchanan County                                                                                                                                     
    Buena Vista County                                                                                                                                  
    Butler County                                                                                                                                       
    Calhoun County                                                                                                                                      
    Carroll County                                                                                                                                      
    Cass County                                                                                                                                         
    Cedar County                                                                                                                                        
    Cerro Gordo County                                                                                                                                  
    Cherokee County                                                                                                                                     
    Chickasaw County                                                                                                                                    
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Clayton County                                                                                                                                      
    Clinton County                                                                                                                                      
    Crawford County                                                                                                                                     
    Dallas County                                                                                                                                       
    Davis County                                                                                                                                        
    Decatur County                                                                                                                                      
    Delaware County                                                                                                                                     
    Des Moines County                                                                                                                                   
    Dickinson County                                                                                                                                    
    Dubuque County                                                                                                                                      
    Emmet County                                                                                                                                        

[[Page 2752]]

                                                                                                                                                        
    Fayette County                                                                                                                                      
    Floyd County                                                                                                                                        
    Franklin County                                                                                                                                     
    Fremont County                                                                                                                                      
    Greene County                                                                                                                                       
    Grundy County                                                                                                                                       
    Guthrie County                                                                                                                                      
    Hamilton County                                                                                                                                     
    Hancock County                                                                                                                                      
    Hardin County                                                                                                                                       
    Harrison County                                                                                                                                     
    Henry County                                                                                                                                        
    Howard County                                                                                                                                       
    Humboldt County                                                                                                                                     
    Ida County                                                                                                                                          
    Iowa County                                                                                                                                         
    Jackson County                                                                                                                                      
    Jasper County                                                                                                                                       
    Jefferson County                                                                                                                                    
    Johnson County                                                                                                                                      
    Jones County                                                                                                                                        
    Keokuk County                                                                                                                                       
    Kossuth County                                                                                                                                      
    Lee County                                                                                                                                          
    Linn County                                                                                                                                         
    Louisa County                                                                                                                                       
    Lucas County                                                                                                                                        
    Lyon County                                                                                                                                         
    Madison County                                                                                                                                      
    Mahaska County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Mills County                                                                                                                                        
    Mitchell County                                                                                                                                     
    Monona County                                                                                                                                       
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Muscatine County                                                                                                                                    
    O'Brien County                                                                                                                                      
    Osceola County                                                                                                                                      
    Page County                                                                                                                                         
    Palo Alto County                                                                                                                                    
    Plymouth County                                                                                                                                     
    Pocahontas County                                                                                                                                   
    Polk County                                                                                                                                         
    Pottawattamie County                                                                                                                                
    Poweshiek County                                                                                                                                    
    Ringgold County                                                                                                                                     
    Sac County                                                                                                                                          
    Scott County                                                                                                                                        
    Shelby County                                                                                                                                       
    Sioux County                                                                                                                                        
    Story County                                                                                                                                        
    Tama County                                                                                                                                         
    Taylor County                                                                                                                                       
    Union County                                                                                                                                        
    Van Buren County                                                                                                                                    
    Wapello County                                                                                                                                      
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Winnebago County                                                                                                                                    
    Winneshiek County                                                                                                                                   
    Woodbury County                                                                                                                                     
    Worth County                                                                                                                                        
    Wright County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *

[[Page 2753]]

    4. In Sec. 81.317, the table entitled ``Kansas--Ozone'' is revised 
to read as follows:


Sec. 81.317  Kansas.

* * * * * * *

                                                             Kansas--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Kansas City Area:                                                                                                                                       
    Johnson County......................      7/23/92  Attainment...............................                                                        
    Wyandotte County....................      7/23/92  Attainment...............................                                                        
Allen County............................  ...........  1 hr. std. N.A.\2\                                                                               
Anderson County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Atchison County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Barber County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Barton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Bourbon County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Brown County............................  ...........  1 hr. std. N.A.\2\                                                                               
Butler County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Chase County............................  ...........  1 hr. std. N.A.\2\                                                                               
Chautauqua County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Cherokee County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Cheyenne County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Clark County............................  ...........  1 hr. std. N.A.\2\                                                                               
Clay County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Cloud County............................  ...........  1 hr. std. N.A.\2\                                                                               
Coffey County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Comanche County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Cowley County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Crawford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Decatur County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Dickinson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Doniphan County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Douglas County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Edwards County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Elk County..............................  ...........  1 hr. std. N.A.\2\                                                                               
Ellis County............................  ...........  1 hr. std. N.A.\2\                                                                               
Ellsworth County........................  ...........  1 hr. std. N.A.\2\                                                                               
Finney County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Ford County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Franklin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Geary County............................  ...........  1 hr. std. N.A.\2\                                                                               
Gove County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Graham County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Grant County............................  ...........  1 hr. std. N.A.\2\                                                                               
Gray County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Greeley County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Greenwood County........................  ...........  1 hr. std. N.A.\2\                                                                               
Hamilton County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Harper County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Harvey County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Haskell County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Hodgeman County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Jefferson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Jewell County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Kearny County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Kingman County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Kiowa County............................  ...........  1 hr. std. N.A.\2\                                                                               
Labette County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Lane County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Leavenworth County......................  ...........  1 hr. std. N.A.\2\                                                                               
Lincoln County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Linn County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Logan County............................  ...........  1 hr. std. N.A.\2\                                                                               
Lyon County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Marion County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Marshall County.........................  ...........  1 hr. std. N.A.\2\                                                                               
McPherson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Meade County............................  ...........  1 hr. std. N.A.\2\                                                                               
Miami County............................  ...........  1 hr. std. N.A.\2\                                                                               
Mitchell County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Montgomery County.......................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2754]]

                                                                                                                                                        
Morris County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Morton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Nemaha County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Neosho County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Ness County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Norton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Osage County............................  ...........  1 hr. std. N.A.\2\                                                                               
Osborne County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Ottawa County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Pawnee County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Phillips County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Pottawatomie County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Pratt County............................  ...........  1 hr. std. N.A.\2\                                                                               
Rawlins County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Reno County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Republic County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Rice County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Riley County............................  ...........  1 hr. std. N.A.\2\                                                                               
Rooks County............................  ...........  1 hr. std. N.A.\2\                                                                               
Rush County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Russell County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Saline County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Scott County............................  ...........  1 hr. std. N.A.\2\                                                                               
Sedgwick County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Seward County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Shawnee County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Sheridan County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Sherman County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Smith County............................  ...........  1 hr. std. N.A.\2\                                                                               
Stafford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Stanton County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Stevens County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Sumner County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Thomas County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Trego County............................  ...........  1 hr. std. N.A.\2\                                                                               
Wabaunsee County........................  ...........  1 hr. std. N.A.\2\                                                                               
Wallace County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Washington County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Wichita County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Wilson County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Woodson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    19. In Sec. 81.318, the table entitled ``Kentucky--Ozone'' is 
revised to read as follows:


Sec. 81.318  Kentucky.

* * * * *

                                                            Kentucky--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Cincinnati-Hamilton Area:                                                                                                                               
    Boone County........................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Campbell County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Kenton County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Edmonson County Area:                                                                                                                                   
    Edmonson County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Louisville Area:                                                                                                                                        
    Bullitt County (part)...............     11/15/90  Nonattainment............................     11/15/90  Moderate.                                

[[Page 2755]]

                                                                                                                                                        
        The area boundary is as follows:                                                                                                                
         Beginning at the intersection                                                                                                                  
         of Ky 1020 and the Jefferson-                                                                                                                  
         Bullitt County Line proceeding                                                                                                                 
         to the east along the county                                                                                                                   
         line to the intersection of                                                                                                                    
         county road 567 and the                                                                                                                        
         Jefferson-Bullitt County Line;                                                                                                                 
         proceeding south on county road                                                                                                                
         567 to the junction with Ky                                                                                                                    
         1116 (also known as Zoneton                                                                                                                    
         Road); proceeding to the south                                                                                                                 
         on Ky 1116 to the junction with                                                                                                                
         Hebron Lane; proceeding to the                                                                                                                 
         south on Hebron Lane to Cedar                                                                                                                  
         Creek; proceeding south on                                                                                                                     
         Cedar Creek to the confluence                                                                                                                  
         of Floyds Fork turning                                                                                                                         
         southeast along a creek that                                                                                                                   
         meets Ky 44 at Stallings                                                                                                                       
         Cemetery; proceeding west along                                                                                                                
         Ky 44 to the eastern most point                                                                                                                
         in the Shepherdsville city                                                                                                                     
         limits; proceeding south along                                                                                                                 
         the Shepherdsville city limits                                                                                                                 
         to the Salt River and west to a                                                                                                                
         point across the river from                                                                                                                    
         Mooney Lane; proceeding south                                                                                                                  
         along Mooney Lane to the                                                                                                                       
         junction of Ky 480; proceeding                                                                                                                 
         west on Ky 480 to the junction                                                                                                                 
         with Ky 2237; proceeding south                                                                                                                 
         on Ky 2237 to the junction with                                                                                                                
         Ky 61 and proceeding north on                                                                                                                  
         Ky 61 to the junction with Ky                                                                                                                  
         1494; proceeding south on Ky                                                                                                                   
         1494 to the junction with the                                                                                                                  
         perimeter of the Fort Knox                                                                                                                     
         Military Reservation;                                                                                                                          
         proceeding north along the                                                                                                                     
         military reservation perimeter                                                                                                                 
         to Castleman Branch Road;                                                                                                                      
         proceeding north on Castleman                                                                                                                  
         Branch Road to Ky 44;                                                                                                                          
         proceeding a very short                                                                                                                        
         distance west on Ky 44 to a                                                                                                                    
         junction with Ky 2723;                                                                                                                         
         proceeding north on Ky 2723 to                                                                                                                 
         the junction of Chillicoop                                                                                                                     
         Road; proceeding northeast on                                                                                                                  
         Chillicoop Road to the junction                                                                                                                
         of KY 2673; proceeding north on                                                                                                                
         KY 2673 to the junction of KY                                                                                                                  
         1020; proceeding north on KY                                                                                                                   
         1020 to the beginning; unless a                                                                                                                
         road or intersection of two or                                                                                                                 
         more roads defines the                                                                                                                         
         nonattainment boundary, the                                                                                                                    
         area shall extend outward 750                                                                                                                  
         feet from the center of the                                                                                                                    
         road or intersection.                                                                                                                          
    Jefferson County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Oldham County (part)................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                

[[Page 2756]]

                                                                                                                                                        
        The area boundary is as follows:                                                                                                                
         Beginning at the intersection                                                                                                                  
         of the Oldham-Jefferson County                                                                                                                 
         Line with the southbound lane                                                                                                                  
         of Intestate 71; proceeding to                                                                                                                 
         the northeast along the                                                                                                                        
         southbound lane of Interstate                                                                                                                  
         71 to the intersection of Ky                                                                                                                   
         329 and the southbound lane of                                                                                                                 
         Interstate 71; proceeding to                                                                                                                   
         the northwest on Ky 329 to the                                                                                                                 
         intersection of Zaring Road and                                                                                                                
         Ky 329; proceeding to the east-                                                                                                                
         northeast on Zaring Road to the                                                                                                                
         junction of Cedar Point Road                                                                                                                   
         and Zaring Road; proceeding to                                                                                                                 
         the north-northeast on Cedar                                                                                                                   
         Point Road to the junction of                                                                                                                  
         Ky 393 and Cedar Point Road;                                                                                                                   
         proceeding to the south-                                                                                                                       
         southeast on Ky 393 to the                                                                                                                     
         junction of (the access road on                                                                                                                
         the north side of Reformatory                                                                                                                  
         Lake and the Reformatory);                                                                                                                     
         proceeding to the east-                                                                                                                        
         northeast on the access road to                                                                                                                
         the junction with Dawkins Lane                                                                                                                 
         and the access road; proceeding                                                                                                                
         to follow an electric power                                                                                                                    
         line east-northeast across from                                                                                                                
         the junction of county road 746                                                                                                                
         and Dawkins Lane to the east-                                                                                                                  
         northeast across Ky 53 on to                                                                                                                   
         the La Grange Water Filtration                                                                                                                 
         Plant; proceeding on to the                                                                                                                    
         east-southeast along the power                                                                                                                 
         line then south across Fort                                                                                                                    
         Pickens Road to a power                                                                                                                        
         substation on Ky 146;                                                                                                                          
         proceeding along the power line                                                                                                                
         south across Ky 146 and the                                                                                                                    
         Seaboard System Railroad track                                                                                                                 
         to adjoin the incorporated city                                                                                                                
         limits of La Grange; then                                                                                                                      
         proceeding east then south                                                                                                                     
         along the La Grange city limits                                                                                                                
         to a point abutting the north                                                                                                                  
         side of Ky 712; proceeding east-                                                                                                               
         southeast on Ky 712 to the                                                                                                                     
         junction of Massie School Road                                                                                                                 
         and Ky 712; proceeding to the                                                                                                                  
         south-southwest on Massie                                                                                                                      
         School Road to the intersection                                                                                                                
         of Massie School Road and Zale                                                                                                                 
         Smith Road; proceeding                                                                                                                         
         northeast on Zale Smith Road to                                                                                                                
         the junction of KY 53 and Zale                                                                                                                 
         Smith Road; proceeding on Ky 53                                                                                                                
         to the north-northwest to the                                                                                                                  
         junction of New Moody Lane and                                                                                                                 
         Ky 53; proceeding on New Moody                                                                                                                 
         Lane to the south-southwest                                                                                                                    
         until meeting the city limits                                                                                                                  
         of La Grange; then briefly                                                                                                                     
         proceeding north following the                                                                                                                 
         La Grange city limits to the                                                                                                                   
         intersection of the northbound                                                                                                                 
         lane of Interstate 71 and the                                                                                                                  
         La Grange city limits;                                                                                                                         
         proceeding southwest on the                                                                                                                    
         north-bound lane of Interstate                                                                                                                 
         71 until inter-secting with the                                                                                                                
         North Fork of Currys Fork;                                                                                                                     
         proceeding south-southwest                                                                                                                     
         beyond the confluence of Currys                                                                                                                
         Fork to the south-southwest                                                                                                                    
         beyond the confluence of Floyds                                                                                                                
         Fork continuing on to the                                                                                                                      
         Oldham-Jefferson County Line;                                                                                                                  
         proceeding northwest along the                                                                                                                 
         Oldham-Jefferson County Line to                                                                                                                
         the beginning; unless a road or                                                                                                                
         intersection of two or more                                                                                                                    
         roads defines the nonattainment                                                                                                                
         boundary, the area shall extend                                                                                                                
         outward 750 feet from the                                                                                                                      
         center of the road or                                                                                                                          
         intersection.                                                                                                                                  
Owensboro Area:                                                                                                                                         
    Daviess County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Hancock County......................  ...........  1 hr. std. N.A.\2\                                                                               
        The area boundary is as follows:                                                                                                                
         Beginning at the Intersection                                                                                                                  
         of U.S. 60 and the Hancock-                                                                                                                    
         Daviess County Line; proceeding                                                                                                                
         east along U.S. 60 to the                                                                                                                      
         intersection of Yellow Creek                                                                                                                   
         and U.S. 60; proceeding north                                                                                                                  
         and west along Yellow Creek to                                                                                                                 
         the confluence of the Ohio                                                                                                                     
         River; proceeding west along                                                                                                                   
         the Ohio River to the                                                                                                                          
         confluence of Blackford Creek;                                                                                                                 
         proceeding south and east along                                                                                                                
         Blackford Creek to the                                                                                                                         
         beginning.                                                                                                                                     
Morgan County Area:                                                                                                                                     
    Morgan County.......................     11/15/90  Unclassifiable/Attainment................     11/15/90  .........................................

[[Page 2757]]

                                                                                                                                                        
Adair County............................  ...........  1 hr. std. N.A.\2\                                                                               
Allen County............................  ...........  1 hr. std. N.A.\2\                                                                               
Anderson County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Ballard County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Barren County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Bath County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Bell County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Bourbon County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Boyd County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Boyle County............................  ...........  1 hr. std. N.A.\2\                                                                               
Bracken County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Breathitt County........................  ...........  1 hr. std. N.A.\2\                                                                               
Breckinridge County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Bullitt County (part):                                                                                                                                  
    Remainder of County.................  ...........  1 hr. std. N.A.\2\                                                                               
Butler County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Caldwell County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Calloway County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Carlisle County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Carroll County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Carter County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Casey County............................  ...........  1 hr. std. N.A.\2\                                                                               
Christian County........................  ...........  1 hr. std. N.A.\2\                                                                               
Clark County............................  ...........  1 hr. std. N.A.\2\                                                                               
Clay County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Clinton County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Crittenden County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Cumberland County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Elliott County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Estill County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Fayette County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Fleming County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Floyd County............................  ...........  1 hr. std. N.A.\2\                                                                               
Franklin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Fulton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Gallatin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Garrard County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Grant County............................  ...........  1 hr. std. N.A.\2\                                                                               
Graves County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Grayson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Green County............................  ...........  1 hr. std. N.A.\2\                                                                               
Greenup County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Hancock County (part):                                                                                                                                  
    Remainder of County.................  ...........  1 hr. std. N.A.\2\                                                                               
Hardin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Harlan County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Harrison County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Hart County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Henderson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Henry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Hickman County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Hopkins County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Jessamine County........................  ...........  1 hr. std. N.A.\2\                                                                               
Johnson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Knott County............................  ...........  1 hr. std. N.A.\2\                                                                               
Knox County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Larue County............................  ...........  1 hr. std. N.A.\2\                                                                               
Laurel County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Lawrence County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Lee County..............................  ...........  1 hr. std. N.A.\2\                                                                               
Leslie County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Letcher County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Lewis County............................  ...........  1 hr. std. N.A.\2\                                                                               
Lincoln County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Livingston County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Logan County............................  ...........  1 hr. std. N.A.\2\                                                                               
Lyon County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Madison County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Magoffin County.........................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2758]]

                                                                                                                                                        
Marion County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Marshall County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Martin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Mason County............................  ...........  1 hr. std. N.A.\2\                                                                               
McCracken County........................  ...........  1 hr. std. N.A.\2\                                                                               
McCreary County.........................  ...........  1 hr. std. N.A.\2\                                                                               
McLean County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Meade County............................  ...........  1 hr. std. N.A.\2\                                                                               
Menifee County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Mercer County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Metcalfe County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Monroe County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Montgomery County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Muhlenberg County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Nelson County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Nicholas County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Ohio County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Oldham County (part):                                                                                                                                   
    Remainder of County.................  ...........  1 hr. std. N.A.\2\                                                                               
Owen County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Owsley County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Pendleton County........................  ...........  1 hr. std. N.A.\2\                                                                               
Perry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Pike County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Powell County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Pulaski County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Robertson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Rockcastle County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Rowan County............................  ...........  1 hr. std. N.A.\2\                                                                               
Russell County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Scott County............................  ...........  1 hr. std. N.A.\2\                                                                               
Shelby County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Simpson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Spencer County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Taylor County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Todd County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Trigg County............................  ...........  1 hr. std. N.A.\2\                                                                               
Trimble County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Union County............................  ...........  1 hr. std. N.A.\2\                                                                               
Warren County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Washington County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Wayne County............................  ...........  1 hr. std. N.A.\2\                                                                               
Webster County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Whitley County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Wolfe County............................  ...........  1 hr. std. N.A.\2\                                                                               
Woodford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    4. In Sec. 81.319, the table entitled ``Louisiana--Ozone'' is 
revised to read as follows:


Sec. 81.319  Louisiana.

* * * * * * *

                                                           Louisiana--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Baton Rouge Area:                                                                                                                                       
    Ascension Parish....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    East Baton Rouge Parish.............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Iberville Parish....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Livingston Parish...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    West Baton Rouge Parish.............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Beauregard Parish Area:                                                                                                                                 
    Beauregard Parish...................  ...........  1 hr. std. N.A.\2\                                                                               
Grant Parish Area:                                                                                                                                      

[[Page 2759]]

                                                                                                                                                        
    Grant Parish........................  ...........  1 hr. std. N.A.\2\                                                                               
Lafayette Area:                                                                                                                                         
    Lafayette Parish....................  ...........  1 hr. std. N.A.\2\                                                                               
Lafourche Parish Area:                                                                                                                                  
    Lafourche Parish....................      1/05/98  Nonattainment............................      1/05/98  Incomplete Data                          
Lake Charles Area:                                                                                                                                      
    Calcasieu Parish....................  ...........  1 hr. std. N.A.\2\                                                                               
New Orleans Area:                                                                                                                                       
    Jefferson Parish....................  ...........  1 hr. std. N.A.\2\                                                                               
    Orleans Parish......................  ...........  1 hr. std. N.A.\2\                                                                               
    St. Bernard Parish..................  ...........  1 hr. std. N.A.\2\                                                                               
    St. Charles Parish..................  ...........  1 hr. std. N.A.\2\                                                                               
Pointe Coupee Area:                                                                                                                                     
    Pointe Coupee Parish................  ...........  1 hr. std. N.A.\2\                                                                               
St. James Parish Area:                                                                                                                                  
    St. James Parish....................  ...........  1 hr. std. N.A.\2\                                                                               
St. Mary Parish Area:                                                                                                                                   
    St. Mary Parish.....................  ...........  1 hr. std. N.A.\2\                                                                               
    AQCR 019 Monroe-El Dorado Interstate  ...........  1 hr. std. N.A.\2\                                                                               
        Caldwell Parish                                                                                                                                 
        Catahoula Parish                                                                                                                                
        Concordia Parish                                                                                                                                
        East Carroll Parish                                                                                                                             
        Franklin Parish                                                                                                                                 
        La Salle Parish                                                                                                                                 
        Madison Parish                                                                                                                                  
        Morehouse Parish                                                                                                                                
        Ouachita Parish                                                                                                                                 
        Richland Parish                                                                                                                                 
        Tensas Parish                                                                                                                                   
        Union Parish                                                                                                                                    
        West Carroll Parish                                                                                                                             
    AQCR 022 Shreveport-Texarkana-Tyler   ...........  1 hr. std. N.A.\2\                                                                               
     Inters..                                                                                                                                           
        Bienville Parish                                                                                                                                
        Bossier Parish                                                                                                                                  
        Caddo Parish                                                                                                                                    
        Claiborne Parish                                                                                                                                
        De Soto Parish                                                                                                                                  
        Jackson Parish                                                                                                                                  
        Lincoln Parish                                                                                                                                  
        Natchitoches Parish                                                                                                                             
        Red River Parish                                                                                                                                
        Sabine Parish                                                                                                                                   
        Webster Parish                                                                                                                                  
        Winn Parish                                                                                                                                     
    AQCR 106 S. Louisiana-S.E. Texas      ...........  1 hr. std. N.A.\2\                                                                               
     Interstate.                                                                                                                                        
        St. John The Baptist Parish                                                                                                                     
    AQCR 106 S. Louisiana-S.E. Texas      ...........  1 hr. std. N.A.\2\                                                                               
     Interstate.                                                                                                                                        
        Acadia Parish                                                                                                                                   
        Allen Parish                                                                                                                                    
        Assumption Parish                                                                                                                               
        Avoyelles Parish                                                                                                                                
        Cameron Parish                                                                                                                                  
        East Feliciana Parish                                                                                                                           
        Evangeline Parish                                                                                                                               
        Iberia Parish                                                                                                                                   
        Jefferson Davis Parish                                                                                                                          
        Plaquemines Parish                                                                                                                              
        Rapides Parish                                                                                                                                  
        St. Helena Parish                                                                                                                               
        St. Landry Parish                                                                                                                               
        St. Martin Parish                                                                                                                               
        St. Tammany Parish                                                                                                                              
        Tangipahoa Parish                                                                                                                               
        Terrebonne Parish                                                                                                                               
        Vermilion Parish                                                                                                                                
        Vernon Parish                                                                                                                                   
        Washington Parish                                                                                                                               
        West Feliciana Parish                                                                                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                

[[Page 2760]]

                                                                                                                                                        
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * *
    21. In Sec. 81.320, the table entitled ``Maine--Ozone'' is revised 
to read as follows:


Sec. 81.320  Maine.

* * * * *

                                                             Maine--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                             Date 1                       Type                       Date 1                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Franklin County Area:                                                                                                                                   
    Franklin County (part)..............  ...........  1 hr. std. N.A.3                                                                                 
Hancock County and Waldo County Area:                                                                                                                   
    Hancock County......................  ...........  1 hr. std. N.A.3                                                                                 
    Waldo County........................  ...........  1 hr. std. N.A.3                                                                                 
Knox County and Lincoln County Area:                                                                                                                    
    Knox County.........................  ...........  1 hr. std. N.A.3                                                                                 
    Lincoln County......................  ...........  1 hr. std. N.A.3                                                                                 
Lewiston-Auburn Area:                                                                                                                                   
    Androscoggin County.................  ...........  1 hr. std. N.A.3                                                                                 
    Kennebec County.....................  ...........  1 hr. std. N.A.3                                                                                 
Oxford County Area:                                                                                                                                     
    Oxford County (part)................  ...........  1 hr. std. N.A.3                                                                                 
Portland Area:                                                                                                                                          
    Cumberland County...................     11/15/90  Nonattainment............................     11/15/90  Moderate.2                               
    Sagadahoc County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.2                               
    York County.........................     11/15/90  Nonattainment............................     11/15/90  Moderate.2                               
Somerset County Area:                                                                                                                                   
    Somerset County (part)..............  ...........  1 hr. std. N.A.3                                                                                 
AQCR 108 Aroostook Intrastate...........  ...........  1 hr. std. N.A.3                                                                                 
    Aroostook County (part)                                                                                                                             
        see 40 CFR 81.179                                                                                                                               
AQCR 109 Down East Intrastate...........  ...........  1 hr. std. N.A.3                                                                                 
    Penobscot County (part), as                                                                                                                         
     described under 40 CFR 81.181.                                                                                                                     
    Piscataquis County (part)                                                                                                                           
        see 40 CFR 81.181                                                                                                                               
    Washington County                                                                                                                                   
AQCR 111 Northwest Maine Intrastate.....  ...........  1 hr. std. N.A.3                                                                                 
    (Remainder of)                                                                                                                                      
        see 40 CFR 81.182                                                                                                                               
    Aroostook County                                                                                                                                    
    Franklin County (part)                                                                                                                              
    Oxford County (part)                                                                                                                                
    Penobscot County (part)                                                                                                                             
    Piscataquis County (part)                                                                                                                           
    Somerset County (part)                                                                                                                              
--------------------------------------------------------------------------------------------------------------------------------------------------------
1 This date is March 17, 1998, unless otherwise noted.                                                                                                  
2 Attainment date extended to November 15, 1997.                                                                                                        
3 1 hour standard Not Applicable.                                                                                                                       

* * * * * * *
    22. In Sec. 81.321, the table entitled ``Maryland--Ozone'' is 
revised to read as follows:


Sec. 81.321  Maryland.

* * * * * * *

                                                            Maryland--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                             Date 1                       Type                       Date 1                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Baltimore Area:                                                                                                                                         
    Anne Arundel County.................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    City of Baltimore...................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Baltimore County....................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Carroll County......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Harford County......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Howard County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
Kent County and Queen Anne's County                                                                                                                     
 Area:                                                                                                                                                  
    Kent County.........................       1/6/92  Nonattainment............................       1/6/92  Marginal.                                

[[Page 2761]]

                                                                                                                                                        
    Queen Anne's County.................       1/6/92  Nonattainment............................       1/6/92  Marginal.                                
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Cecil County........................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
Washington, DC Area:                                                                                                                                    
    Calvert County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Charles County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Frederick County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Montgomery County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Prince George's County..............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
AQCR 113 Cumberland-Keyser Interstate...  ...........  1 hr. std. N.A.2                                                                                 
    Allegany County                                                                                                                                     
    Garrett County                                                                                                                                      
    Washington County                                                                                                                                   
AQCR 114 Eastern Shore Interstate         ...........  1 hr. std. N.A.2                                                                                 
 (Remainder of).                                                                                                                                        
    Caroline County                                                                                                                                     
    Dorchester County                                                                                                                                   
    Somerset County                                                                                                                                     
    Talbot County                                                                                                                                       
    Wicomico County                                                                                                                                     
    Worcester County                                                                                                                                    
AQCR 116 Southern Maryland Intrastate     ...........  1 hr. std. N.A.2                                                                                 
 (Remainder of).                                                                                                                                        
    St. Mary's County                                                                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
1 This date is March 17, 1998, unless otherwise noted.                                                                                                  
2 1 hour standard Not Applicable.                                                                                                                       

* * * * * * *
    23. In Sec. 81.322, the table entitled ``Massachusetts--Ozone'' is 
revised to read as follows:


Sec. 81.322  Massachusetts.

* * * * * * *

                                                         Massachusetts--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                             Date 1                       Type                       Date 1                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Boston-Lawrence-Worcester (E. Mass)                                                                                                                     
 Area:                                                                                                                                                  
    Barnstable County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Bristol County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Dukes County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Essex County........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Middlesex County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Nantucket County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Norfolk County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Plymouth County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Suffolk County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Worcester County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Springfield (W. Mass) Area:                                                                                                                             
    Berkshire County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Franklin County.....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Hampden County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Hampshire County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
1 This date is March 17, 1998, unless otherwise noted.                                                                                                  

* * * * * * *
    24. In Sec. 81.323, the table entitled ``Michigan--Ozone'' is 
revised to read as follows:


Sec. 81.323  Michigan.

* * * * * * *

                                                            Michigan--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Allegan County Area:                                                                                                                                    
    Allegan County......................     11/15/90  Nonattainment............................     11/15/90  Incomplete Data.                         

[[Page 2762]]

                                                                                                                                                        
Barry County Area:                                                                                                                                      
    Barry County........................  ...........  1 hr. std. N.A.\2\                                                                               
Battle Creek Area:                                                                                                                                      
    Calhoun County......................  ...........  1 hr. std. N.A.\2\                                                                               
Benton Harbor Area:                                                                                                                                     
    Berrien County......................  ...........  1 hr. std. N.A.\2\                                                                               
Branch County Area:                                                                                                                                     
    Branch County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Cass County Area:                                                                                                                                       
    Cass County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Detroit-Ann Arbor Area:                                                                                                                                 
    Livingston County...................       4/6/95  Attainment...............................                                                        
    Macomb County.......................       4/6/95  Attainment...............................                                                        
    Monroe County.......................       4/6/95  Attainment...............................                                                        
    Oakland County......................       4/6/95  Attainment...............................                                                        
    St. Clair County....................       4/6/95  Attainment...............................                                                        
    Washtenaw County....................       4/6/95  Attainment...............................                                                        
    Wayne County........................       4/6/95  Attainment...............................                                                        
Flint Area:                                                                                                                                             
    Genesee County......................  ...........  1 hr. std. N.A.\2\                                                                               
Grand Rapids Area:                                                                                                                                      
    Kent County.........................      6/21/96  Attainment...............................                                                        
    Ottawa County.......................      6/21/96  Attainment...............................                                                        
Gratiot County Area:                                                                                                                                    
    Gratiot County......................  ...........  1 hr. std. N.A.\2\                                                                               
Hillsdale County Area:                                                                                                                                  
    Hillsdale County....................  ...........  1 hr. std. N.A.\2\                                                                               
Huron County Area:                                                                                                                                      
    Huron County........................  ...........  1 hr. std. N.A.\2\                                                                               
Ionia County Area:                                                                                                                                      
    Ionia County........................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson Area:                                                                                                                                           
    Jackson County......................  ...........  1 hr. std. N.A.\2\                                                                               
Kalamazoo Area:                                                                                                                                         
    Kalamazoo County....................  ...........  1 hr. std. N.A.\2\                                                                               
Lansing-East Lansing Area:                                                                                                                              
    Clinton County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Eaton County........................  ...........  1 hr. std. N.A.\2\                                                                               
    Ingham County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Lapeer County Area:                                                                                                                                     
    Lapeer County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Lenawee County Area:                                                                                                                                    
    Lenawee County......................  ...........  1 hr. std. N.A.\2\                                                                               
Mason County Area:                                                                                                                                      
    Mason County........................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Montcalm Area:                                                                                                                                          
    Montcalm County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Muskegon Area:                                                                                                                                          
    Muskegon County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Saginaw-Bay City-Midland Area:                                                                                                                          
    Bay County..........................  ...........  1 hr. std. N.A.\2\                                                                               
    Midland County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Saginaw County......................  ...........  1 hr. std. N.A.\2\                                                                               
Sanilac County Area:                                                                                                                                    
    Sanilac County......................  ...........  1 hr. std. N.A.\2\                                                                               
Shiawassee County Area:                                                                                                                                 
    Shiawassee County...................  ...........  1 hr. std. N.A.\2\                                                                               
St. Joseph County Area:                                                                                                                                 
    St. Joseph County...................  ...........  1 hr. std. N.A.\2\                                                                               
Tuscola County Area:                                                                                                                                    
    Tuscola County......................  ...........  1 hr. std. N.A.\2\                                                                               
Van Buren County Area:                                                                                                                                  
    Van Buren County....................  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 122 Central Michigan Intrastate      ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Arenac County                                                                                                                                       
    Clare County                                                                                                                                        
    Gladwin County                                                                                                                                      
    Iosco County                                                                                                                                        
    Isabella County                                                                                                                                     
    Lake County                                                                                                                                         

[[Page 2763]]

                                                                                                                                                        
    Mecosta County                                                                                                                                      
    Newaygo County                                                                                                                                      
    Oceana County                                                                                                                                       
    Ogemaw County                                                                                                                                       
    Osceola County                                                                                                                                      
    Roscommon County                                                                                                                                    
AQCR 126 Upper Michigan Intrastate                                                                                                                      
 (part):                                                                                                                                                
    Marquette County....................  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 126 Upper Michigan Intrastate        ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Alcona County                                                                                                                                       
    Alger County                                                                                                                                        
    Alpena County                                                                                                                                       
    Antrim County                                                                                                                                       
    Baraga County                                                                                                                                       
    Benzie County                                                                                                                                       
    Charlevoix County                                                                                                                                   
    Cheboygan County                                                                                                                                    
    Chippewa County                                                                                                                                     
    Crawford County                                                                                                                                     
    Delta County                                                                                                                                        
    Dickinson County                                                                                                                                    
    Emmet County                                                                                                                                        
    Gogebic County                                                                                                                                      
    Grand Traverse County                                                                                                                               
    Houghton County                                                                                                                                     
    Iron County                                                                                                                                         
    Kalkaska County                                                                                                                                     
    Keweenaw County                                                                                                                                     
    Leelanau County                                                                                                                                     
    Luce County                                                                                                                                         
    Mackinac County                                                                                                                                     
    Manistee County                                                                                                                                     
    Menominee County                                                                                                                                    
    Missaukee County                                                                                                                                    
    Montmorency County                                                                                                                                  
    Ontonagon County                                                                                                                                    
    Oscoda County                                                                                                                                       
    Otsego County                                                                                                                                       
    Presque Isle County                                                                                                                                 
    Schoolcraft County                                                                                                                                  
    Wexford County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    25. In Sec. 81.324, the table entitled ``Minnesota--Ozone'' is 
revised to read as follows:


Sec. 81.324  Minnesota.

* * * * * * *

                                                           Minnesota--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Minneapolis-Saint Paul Area:                                                                                                                            
    Anoka County........................  ...........  1 hr. std. N.A.\2\                                                                               
    Carver County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Dakota County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Hennepin County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Ramsey County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Scott County........................  ...........  1 hr. std. N.A.\2\                                                                               
    Washington County...................  ...........  1 hr. std. N.A.\2\                                                                               
Aitkin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Becker County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Beltrami County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Benton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Big Stone County........................  ...........  1 hr. std. N.A.\2\                                                                               
Blue Earth County.......................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2764]]

                                                                                                                                                        
Brown County............................  ...........  1 hr. std. N.A.\2\                                                                               
Carlton County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Cass County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Chippewa County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Chisago County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Clay County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Clearwater County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Cook County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Cottonwood County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Crow Wing County........................  ...........  1 hr. std. N.A.\2\                                                                               
Dodge County............................  ...........  1 hr. std. N.A.\2\                                                                               
Douglas County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Faribault County........................  ...........  1 hr. std. N.A.\2\                                                                               
Fillmore County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Freeborn County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Goodhue County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Grant County............................  ...........  1 hr. std. N.A.\2\                                                                               
Houston County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Hubbard County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Isanti County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Itasca County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Kanabec County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Kandiyohi County........................  ...........  1 hr. std. N.A.\2\                                                                               
Kittson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Koochiching County......................  ...........  1 hr. std. N.A.\2\                                                                               
Lac qui Parle County....................  ...........  1 hr. std. N.A.\2\                                                                               
Lake County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Lake of the Woods County................  ...........  1 hr. std. N.A.\2\                                                                               
Le Sueur County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Lincoln County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Lyon County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Mahnomen County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Marshall County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Martin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
McLeod County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Meeker County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Mille Lacs County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Morrison County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Mower County............................  ...........  1 hr. std. N.A.\2\                                                                               
Murray County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Nicollet County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Nobles County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Norman County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Olmsted County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Otter Tail County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Pennington County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Pine County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Pipestone County........................  ...........  1 hr. std. N.A.\2\                                                                               
Polk County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Pope County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Red Lake County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Redwood County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Renville County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Rice County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Rock County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Roseau County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Saint Louis County......................  ...........  1 hr. std. N.A.\2\                                                                               
Sherburne County........................  ...........  1 hr. std. N.A.\2\                                                                               
Sibley County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Stearns County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Steele County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Stevens County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Swift County............................  ...........  1 hr. std. N.A.\2\                                                                               
Todd County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Traverse County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Wabasha County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Wadena County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Waseca County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Watonwan County.........................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2765]]

                                                                                                                                                        
Wilkin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Winona County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Wright County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Yellow Medicine County..................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    26. In Section 81.325, the table entitled ``Mississippi--Ozone'' is 
revised to read as follows:


Sec. 81.325  Mississippi.

* * * * * * *

                                                          Mississippi--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Memphis:                                                                                                                                                
    DeSota County.......................     11/15/90  Unclassifiable/Attainment................     11/15/90  .........................................
Rest of State...........................  ...........  1 hr. std. N.A.\2\                                                                               
    Adams County                                                                                                                                        
    Alcorn County                                                                                                                                       
    Amite County                                                                                                                                        
    Attala County                                                                                                                                       
    Benton County                                                                                                                                       
    Bolivar County                                                                                                                                      
    Calhoun County                                                                                                                                      
    Carroll County                                                                                                                                      
    Chickasaw County                                                                                                                                    
    Choctaw County                                                                                                                                      
    Claiborne County                                                                                                                                    
    Clarke County                                                                                                                                       
    Clay County                                                                                                                                         
    Coahoma County                                                                                                                                      
    Copiah County                                                                                                                                       
    Covington County                                                                                                                                    
    Forrest County                                                                                                                                      
    Franklin County                                                                                                                                     
    George County                                                                                                                                       
    Greene County                                                                                                                                       
    Grenada County                                                                                                                                      
    Hancock County                                                                                                                                      
    Harrison County                                                                                                                                     
    Hinds County                                                                                                                                        
    Holmes County                                                                                                                                       
    Humphreys County                                                                                                                                    
    Issaquena County                                                                                                                                    
    Itawamba County                                                                                                                                     
    Jackson County                                                                                                                                      
    Jasper County                                                                                                                                       
    Jefferson County                                                                                                                                    
    Jefferson Davis County                                                                                                                              
    Jones County                                                                                                                                        
    Kemper County                                                                                                                                       
    Lafayette County                                                                                                                                    
    Lamar County                                                                                                                                        
    Lauderdale County                                                                                                                                   
    Lawrence County                                                                                                                                     
    Leake County                                                                                                                                        
    Lee County                                                                                                                                          
    Leflore County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Lowndes County                                                                                                                                      
    Madison County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   

[[Page 2766]]

                                                                                                                                                        
    Neshoba County                                                                                                                                      
    Newton County                                                                                                                                       
    Noxubee County                                                                                                                                      
    Oktibbeha County                                                                                                                                    
    Panola County                                                                                                                                       
    Pearl River County                                                                                                                                  
    Perry County                                                                                                                                        
    Pike County                                                                                                                                         
    Pontotoc County                                                                                                                                     
    Prentiss County                                                                                                                                     
    Quitman County                                                                                                                                      
    Rankin County                                                                                                                                       
    Scott County                                                                                                                                        
    Sharkey County                                                                                                                                      
    Simpson County                                                                                                                                      
    Smith County                                                                                                                                        
    Stone County                                                                                                                                        
    Sunflower County                                                                                                                                    
    Tallahatchie County                                                                                                                                 
    Tate County                                                                                                                                         
    Tippah County                                                                                                                                       
    Tishomingo County                                                                                                                                   
    Tunica County                                                                                                                                       
    Union County                                                                                                                                        
    Walthall County                                                                                                                                     
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Wilkinson County                                                                                                                                    
    Winston County                                                                                                                                      
    Yalobusha County                                                                                                                                    
    Yazoo County                                                                                                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    27. In Sec. 81.326, the table entitled ``Missouri--Ozone'' is 
revised to read as follows:


Sec. 81.326  Missouri.

* * * * * * *

                                                            Missouri--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Kansas City Area:                                                                                                                                       
    Clay County.........................      7/23/92  Attainment...............................                                                        
    Jackson County......................      7/23/92  Attainment...............................                                                        
    Platte County.......................      7/23/92  Attainment...............................                                                        
St. Louis Area:                                                                                                                                         
    Franklin County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Jefferson County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St. Charles County..................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St. Louis...........................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    St. Louis County....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
AQCR 094 Metro Kansas City Interstate     ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Buchanan County                                                                                                                                     
    Cass County                                                                                                                                         
    Ray County                                                                                                                                          
AQCR 137 N. Missouri Intrastate (part):                                                                                                                 
    Pike County.........................  ...........  1 hr. std. N.A.\2\                                                                               
    Ralls County........................  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 137 N. Missouri Intrastate           ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Adair County                                                                                                                                        
    Andrew County                                                                                                                                       
    Atchison County                                                                                                                                     
    Audrain County                                                                                                                                      

[[Page 2767]]

                                                                                                                                                        
    Boone County                                                                                                                                        
    Caldwell County                                                                                                                                     
    Callaway County                                                                                                                                     
    Carroll County                                                                                                                                      
    Chariton County                                                                                                                                     
    Clark County                                                                                                                                        
    Clinton County                                                                                                                                      
    Cole County                                                                                                                                         
    Cooper County                                                                                                                                       
    Daviess County                                                                                                                                      
    De Kalb County                                                                                                                                      
    Gentry County                                                                                                                                       
    Grundy County                                                                                                                                       
    Harrison County                                                                                                                                     
    Holt County                                                                                                                                         
    Howard County                                                                                                                                       
    Knox County                                                                                                                                         
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Linn County                                                                                                                                         
    Livingston County                                                                                                                                   
    Macon County                                                                                                                                        
    Marion County                                                                                                                                       
    Mercer County                                                                                                                                       
    Moniteau County                                                                                                                                     
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Nodaway County                                                                                                                                      
    Osage County                                                                                                                                        
    Putnam County                                                                                                                                       
    Randolph County                                                                                                                                     
    Saline County                                                                                                                                       
    Schuyler County                                                                                                                                     
    Scotland County                                                                                                                                     
    Shelby County                                                                                                                                       
    Sullivan County                                                                                                                                     
    Warren County                                                                                                                                       
    Worth County                                                                                                                                        
Rest of State...........................  ...........  1 hr. std. N.A.\2\                                                                               
    Barry County                                                                                                                                        
    Barton County                                                                                                                                       
    Bates County                                                                                                                                        
    Benton County                                                                                                                                       
    Bollinger County                                                                                                                                    
    Butler County                                                                                                                                       
    Camden County                                                                                                                                       
    Cape Girardeau County                                                                                                                               
    Carter County                                                                                                                                       
    Cedar County                                                                                                                                        
    Christian County                                                                                                                                    
    Crawford County                                                                                                                                     
    Dade County                                                                                                                                         
    Dallas County                                                                                                                                       
    Dent County                                                                                                                                         
    Douglas County                                                                                                                                      
    Dunklin County                                                                                                                                      
    Gasconade County                                                                                                                                    
    Greene County                                                                                                                                       
    Henry County                                                                                                                                        
    Hickory County                                                                                                                                      
    Howell County                                                                                                                                       
    Iron County                                                                                                                                         
    Jasper County                                                                                                                                       
    Johnson County                                                                                                                                      
    Laclede County                                                                                                                                      
    Lafayette County                                                                                                                                    
    Lawrence County                                                                                                                                     
    Madison County                                                                                                                                      
    Maries County                                                                                                                                       
    McDonald County                                                                                                                                     

[[Page 2768]]

                                                                                                                                                        
    Miller County                                                                                                                                       
    Mississippi County                                                                                                                                  
    Morgan County                                                                                                                                       
    New Madrid County                                                                                                                                   
    Newton County                                                                                                                                       
    Oregon County                                                                                                                                       
    Ozark County                                                                                                                                        
    Pemiscot County                                                                                                                                     
    Perry County                                                                                                                                        
    Pettis County                                                                                                                                       
    Phelps County                                                                                                                                       
    Polk County                                                                                                                                         
    Pulaski County                                                                                                                                      
    Reynolds County                                                                                                                                     
    Ripley County                                                                                                                                       
    Scott County                                                                                                                                        
    Shannon County                                                                                                                                      
    St. Clair County                                                                                                                                    
    St. Francois County                                                                                                                                 
    Ste. Genevieve County                                                                                                                               
    Stoddard County                                                                                                                                     
    Stone County                                                                                                                                        
    Taney County                                                                                                                                        
    Texas County                                                                                                                                        
    Vernon County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Wright County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    28. In Sec. 81.327, the table entitled ``Montana--Ozone'' is 
revised to read as follows:


Sec. 81.327  Montana.

* * * * * * *

                                                            Montana--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Beaverhead County.......................  ...........  1 hr. std. N.A.                                                                                  
Big Horn County (part) excluding Crow,    ...........  1 hr. std. N.A.\2\                                                                               
 Northern Cheyenne Indian Reservations.                                                                                                                 
Blaine County (part) excluding Fort       ...........  1 hr. std. N.A.\2\                                                                               
 Belknap Indian Reservation.                                                                                                                            
Broadwater County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Carbon County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Carter County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Cascade County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Chouteau County (part) excluding Rocky    ...........  1 hr. std. N.A.\2\                                                                               
 Boy Indian Reservation.                                                                                                                                
Custer County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Daniels County (part) excluding Fort      ...........  1 hr. std. N.A.\2\                                                                               
 Peck Indian Reservation.                                                                                                                               
Dawson County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Deer Lodge County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Fallon County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Fergus County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Flathead County (part) excluding          ...........  1 hr. std. N.A.\2\                                                                               
 Flathead Indian Reservation.                                                                                                                           
Gallatin County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Garfield County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Glacier County (part) excluding           ...........  1 hr. std. N.A.\2\                                                                               
 Blackfeet Indian Reservation.                                                                                                                          
Golden Valley County....................  ...........  1 hr. std. N.A.\2\                                                                               
Granite County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Hill County (part) excluding Rocky Boy    ...........  1 hr. std. N.A.\2\                                                                               
 Indian Reservation.                                                                                                                                    

[[Page 2769]]

                                                                                                                                                        
Jefferson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Judith Basin County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Lake County (part) excluding Flathead     ...........  1 hr. std. N.A.\2\                                                                               
 Indian Reservation.                                                                                                                                    
Lewis and Clark County..................  ...........  1 hr. std. N.A.\2\                                                                               
Liberty County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Lincoln County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Madison County..........................  ...........  1 hr. std. N.A.\2\                                                                               
McCone County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Meagher County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Mineral County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Missoula County (part) excluding          ...........  1 hr. std. N.A.\2\                                                                               
 Flathead Indian Reservation.                                                                                                                           
Musselshell County......................  ...........  1 hr. std. N.A.\2\                                                                               
Park County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Petroleum County........................  ...........  1 hr. std. N.A.\2\                                                                               
Phillips County (part) excluding Fort     ...........  1 hr. std. N.A.\2\                                                                               
 Belknap Indian Reservation.                                                                                                                            
Pondera County (part) excluding           ...........  1 hr. std. N.A.\2\                                                                               
 Blackfeet Indian Reservation.                                                                                                                          
Powder River County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Powell County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Prairie County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Ravalli County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Richland County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Roosevelt County (part) excluding Fort    ...........  1 hr. std. N.A.\2\                                                                               
 Peck Indian Reservation.                                                                                                                               
Rosebud County (part) excluding Northern  ...........  1 hr. std. N.A.\2\                                                                               
 Cheyenne Indian Reservation.                                                                                                                           
Sanders County (part) excluding Flathead  ...........  1 hr. std. N.A.\2\                                                                               
 Indian Reservation.                                                                                                                                    
Sheridan County (part) excluding Fort     ...........  1 hr. std. N.A.\2\                                                                               
 Peck Indian Reservation.                                                                                                                               
Silver Bow County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Stillwater County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Sweet Grass County......................  ...........  1 hr. std. N.A.\2\                                                                               
Teton County............................  ...........  1 hr. std. N.A.\2\                                                                               
Toole County............................  ...........  1 hr. std. N.A.\2\                                                                               
Treasure County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Valley County (part) excluding Fort Peck  ...........  1 hr. std. N.A.\2\                                                                               
 Indian Reservation.                                                                                                                                    
Wheatland County........................  ...........  1 hr. std. N.A.\2\                                                                               
Wibaux County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Yellowstone County (part) excluding Crow  ...........  1 hr. std. N.A.\2\                                                                               
 Indian Reservation.                                                                                                                                    
Yellowstone Natl Park...................  ...........  1 hr. std. N.A.\2\                                                                               
Blackfeet Indian Reservation............  ...........  1 hr. std. N.A.\2\                                                                               
    Glacier County (part) area inside                                                                                                                   
     Blackfeet Reservation                                                                                                                              
    Pondera County (part) area inside                                                                                                                   
     Blackfeet Reservation                                                                                                                              
Crow Indian Reservation.................  ...........  1 hr. std. N.A.\2\                                                                               
    Bighorn County (part) area inside                                                                                                                   
     Crow Reservation                                                                                                                                   
    Yellowstone (part) area inside Crow                                                                                                                 
     Reservation                                                                                                                                        
Flathead Indian Reservation.............  ...........  1 hr. std. N.A.\2\                                                                               
    Flathead County (part) area inside                                                                                                                  
     Flathead Reservation                                                                                                                               
    Lake County (part) area inside                                                                                                                      
     Flathead Reservation                                                                                                                               
    Missoula County (part) area inside                                                                                                                  
     Flathead Reservation                                                                                                                               
    Sanders County (part) area inside                                                                                                                   
     Flathead Reservation                                                                                                                               
Fort Belknap Indian Reservation.........  ...........  1 hr. std. N.A.\2\                                                                               
    Blaine County (part) area inside                                                                                                                    
     Fort Belknap Reservation                                                                                                                           
    Phillips County (part) area inside                                                                                                                  
     Fort Belknap Reservation                                                                                                                           
Fort Peck Indian Reservation............  ...........  1 hr. std. N.A.\2\                                                                               
    Daniels County (part) area inside                                                                                                                   
     Fort Peck Reservation                                                                                                                              
    Roosevelt County (part) area inside                                                                                                                 
     Fort Peck Reservation                                                                                                                              
    Sheridan County (part) area inside                                                                                                                  
     Fort Peck Reservation                                                                                                                              
    Valley County (part) area inside                                                                                                                    
     Fort Peck Reservation                                                                                                                              
Northern Cheyenne Indian Reservation....  ...........  1 hr. std. N.A.\2\                                                                               
    Bighorn County (part) area inside                                                                                                                   
     Northern Cheyenne Reservation                                                                                                                      

[[Page 2770]]

                                                                                                                                                        
    Rosebud County (part) area inside                                                                                                                   
     Northern Cheyenne Reservation                                                                                                                      
Rocky Boy Indian Reservation............  ...........  1 hr. std. N.A.\2\                                                                               
    Chouteau County (part) area inside                                                                                                                  
     Rocky Boy Reservation                                                                                                                              
    Hill County (part) area inside Rocky                                                                                                                
     Boy Reservation                                                                                                                                    
                                                                                                                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    29. In Sec. 81.328, the table entitled ``Nebraska--Ozone'' is 
revised to read as follows:


Sec. 81.328  Nebraska.

* * * * * * *

                                                            Nebraska--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Adams County                                                                                                                                        
    Antelope County                                                                                                                                     
    Arthur County                                                                                                                                       
    Banner County                                                                                                                                       
    Blaine County                                                                                                                                       
    Boone County                                                                                                                                        
    Box Butte County                                                                                                                                    
    Boyd County                                                                                                                                         
    Brown County                                                                                                                                        
    Buffalo County                                                                                                                                      
    Burt County                                                                                                                                         
    Butler County                                                                                                                                       
    Cass County                                                                                                                                         
    Cedar County                                                                                                                                        
    Chase County                                                                                                                                        
    Cherry County                                                                                                                                       
    Cheyenne County                                                                                                                                     
    Clay County                                                                                                                                         
    Colfax County                                                                                                                                       
    Cuming County                                                                                                                                       
    Custer County                                                                                                                                       
    Dakota County                                                                                                                                       
    Dawes County                                                                                                                                        
    Dawson County                                                                                                                                       
    Deuel County                                                                                                                                        
    Dixon County                                                                                                                                        
    Dodge County                                                                                                                                        
    Douglas County                                                                                                                                      
    Dundy County                                                                                                                                        
    Fillmore County                                                                                                                                     
    Franklin County                                                                                                                                     
    Frontier County                                                                                                                                     
    Furnas County                                                                                                                                       
    Gage County                                                                                                                                         
    Garden County                                                                                                                                       
    Garfield County                                                                                                                                     
    Gosper County                                                                                                                                       
    Grant County                                                                                                                                        
    Greeley County                                                                                                                                      
    Hall County                                                                                                                                         
    Hamilton County                                                                                                                                     
    Harlan County                                                                                                                                       
    Hayes County                                                                                                                                        
    Hitchcock County                                                                                                                                    
    Holt County                                                                                                                                         
    Hooker County                                                                                                                                       
    Howard County                                                                                                                                       

[[Page 2771]]

                                                                                                                                                        
    Jefferson County                                                                                                                                    
    Johnson County                                                                                                                                      
    Kearney County                                                                                                                                      
    Keith County                                                                                                                                        
    Keya Paha County                                                                                                                                    
    Kimball County                                                                                                                                      
    Knox County                                                                                                                                         
    Lancaster County                                                                                                                                    
    Lincoln County                                                                                                                                      
    Logan County                                                                                                                                        
    Loup County                                                                                                                                         
    Madison County                                                                                                                                      
    McPherson County                                                                                                                                    
    Merrick County                                                                                                                                      
    Morrill County                                                                                                                                      
    Nance County                                                                                                                                        
    Nemaha County                                                                                                                                       
    Nuckolls County                                                                                                                                     
    Otoe County                                                                                                                                         
    Pawnee County                                                                                                                                       
    Perkins County                                                                                                                                      
    Phelps County                                                                                                                                       
    Pierce County                                                                                                                                       
    Platte County                                                                                                                                       
    Polk County                                                                                                                                         
    Red Willow County                                                                                                                                   
    Richardson County                                                                                                                                   
    Rock County                                                                                                                                         
    Saline County                                                                                                                                       
    Sarpy County                                                                                                                                        
    Saunders County                                                                                                                                     
    Scotts Bluff County                                                                                                                                 
    Seward County                                                                                                                                       
    Sheridan County                                                                                                                                     
    Sherman County                                                                                                                                      
    Sioux County                                                                                                                                        
    Stanton County                                                                                                                                      
    Thayer County                                                                                                                                       
    Thomas County                                                                                                                                       
    Thurston County                                                                                                                                     
    Valley County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Webster County                                                                                                                                      
    Wheeler County                                                                                                                                      
    York County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    30. In Sec. 81.329, the table entitled ``Nevada--Ozone'' is revised 
to read as follows:


Sec. 81.329  Nevada.

* * * * * * *

                                                             Nevada--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Reno Area...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Washoe County                                                                                                                                       
Rest of State...........................  ...........  1 hr. std. N.A.\2\                                                                               
    Carson City                                                                                                                                         
    Churchill County                                                                                                                                    
    Clark County                                                                                                                                        
    Douglas County                                                                                                                                      
    Elko County                                                                                                                                         
    Esmeralda County                                                                                                                                    

[[Page 2772]]

                                                                                                                                                        
    Eureka County                                                                                                                                       
    Humboldt County                                                                                                                                     
    Lander County                                                                                                                                       
    Lincoln County                                                                                                                                      
    Lyon County                                                                                                                                         
    Mineral County                                                                                                                                      
    Nye County                                                                                                                                          
    Pershing County                                                                                                                                     
    Storey County                                                                                                                                       
    White Pine County                                                                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    31. In Sec. 81.330, the table entitled ``New Hampshire--Ozone'' is 
revised to read as follows:


Sec. 81.330  New Hampshire.

* * * * * * *

                                                         New Hampshire--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Belknap County Area:                                                                                                                                    
    Belknap County......................  ...........  1 hr. std. N.A.\2\                                                                               
Boston-Lawrence-Worcester Area:                                                                                                                         
    Hillsborough County (part)..........     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        Pelham Town, Amherst Town,                                                                                                                      
         Brookline Town, Hollis Town,                                                                                                                   
         Hudson Town, Litchfield Town,                                                                                                                  
         Merrimack Town, Milford Town,                                                                                                                  
         Mont Vernon Town, Nashua City,                                                                                                                 
         Wilton Town.                                                                                                                                   
    Rockingham County (part)............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        Atkinson Town, Brentwood Town,                                                                                                                  
         Danville Town, Derry Town, E.                                                                                                                  
         Kingston Town, Hampstead Town,                                                                                                                 
         Hampton Falls Town, Kensington                                                                                                                 
         Town, Kingston Town,                                                                                                                           
         Londonderry Town, Newton Town,                                                                                                                 
         Plaistow Town, Salem Town,                                                                                                                     
         Sandown Town, Seabrook Town,                                                                                                                   
         South Hampton Town, Windham                                                                                                                    
         Town.                                                                                                                                          
Cheshire County Area:                                                                                                                                   
    Cheshire County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Manchester Area:                                                                                                                                        
    Hillsborough County (part)..........  ...........  1 hr. std. N.A.\2\                                                                               
        Antrim Town, Bedford Town,                                                                                                                      
         Bennington Town, Deering Town,                                                                                                                 
         Francestown Town, Goffstown                                                                                                                    
         Town, Greenfield Town,                                                                                                                         
         Greenville Town, Hancock Town,                                                                                                                 
         Hillsborough Town, Lyndeborough                                                                                                                
         Town, Manchester city, Mason                                                                                                                   
         Town, New Boston Town, New                                                                                                                     
         Ipswich Town, Petersborough                                                                                                                    
         Town, Sharon Town, Temple town,                                                                                                                
         Weare Town, Windsor Town.                                                                                                                      
    Merrimack County....................  ...........  1 hr. std. N.A.\2\                         ...........  .........................................
    Rockingham County (part)............  ...........  1 hr. std. N.A.\2\                                                                               
        Auburn Town, Candia Town,                                                                                                                       
         Chester Town, Deerfield Town,                                                                                                                  
         Epping Town, Fremont Town,                                                                                                                     
         Northwood Town, Nottingham                                                                                                                     
         Town, Raymond Town.                                                                                                                            
Portsmouth-Dover-Rochester Area:                                                                                                                        
    Rockingham County (part)............     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
        Exeter Town, Greenland Town,                                                                                                                    
         Hampton Town, New Castle Town,                                                                                                                 
         Newfields Town, Newington Town,                                                                                                                
         Newmarket Town, North Hampton                                                                                                                  
         Town, Portsmouth City, Rye                                                                                                                     
         Town, Stratham Town.                                                                                                                           
    Strafford County....................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
Sullivan County Area:                                                                                                                                   
    Sullivan County.....................  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 107 Androscoggin Valley Interstate:                                                                                                                
    Coos County.........................  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 149 Central New Hampshire                                                                                                                          
 Interstate:                                                                                                                                            

[[Page 2773]]

                                                                                                                                                        
    Carroll County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Grafton County......................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    32. In Sec. 81.331, the table entitled ``New Jersey--Ozone'' is 
revised to read as follows:


Sec. 81.331  New Jersey.

* * * * * * *

                                                           New Jersey--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Allentown-Bethlehem Easton Area:                                                                                                                        
    Warren County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Atlantic City Area:                                                                                                                                     
    Atlantic County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Cape May County.....................  ...........  1 hr. std. N.A.\2\                                                                               
New York-N. New Jersey-Long Island Area:                                                                                                                
    Bergen County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Essex County........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Hudson County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Hunterdon County....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Middlesex County....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Monmouth County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Morris County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Ocean County........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Passaic County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Somerset County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Sussex County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Union County........................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Burlington County...................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Camden County.......................     11/15/90  Nonattainment............................     11/15/90   Severe-15.                              
    Cumberland County...................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Gloucester County...................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Mercer County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
    Salem County........................     11/15/90  Nonattainment............................     11/15/90  Severe-15.                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
 \1\This date is March 17, 1998, unless otherwise noted.                                                                                                
 \2\1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    33. In Sec. 81.332, the table entitled ``New Mexico--Ozone'' is 
revised to read as follows:


Sec. 81.332  New Mexico.

* * * * * * *

                                                           New Mexico--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designation area            ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 012 New Mexico-Southern Border       ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Grant County                                                                                                                                        
    Hidalgo County                                                                                                                                      
    Luna County                                                                                                                                         
AQCR 014 Four Corners Interstate........  ...........  1 hr. std. N.A.\2\                                                                               
        see 40 CFR 81.121                                                                                                                               
    McKinley County (part)                                                                                                                              
    Rio Arriba County (part)                                                                                                                            
    San Juan County                                                                                                                                     
    Sandoval County (part)                                                                                                                              
    Valencia County (part)                                                                                                                              
AQCR 152 Albuquerque-Mid Rio Grande       ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            

[[Page 2774]]

                                                                                                                                                        
    Bernalillo County (part)                                                                                                                            
AQCR 152 Albuquerque-Mid Rio Grande.....  ...........  1 hr. std. N.A.\2\                                                                               
    Sandoval County (part)                                                                                                                              
        see 40 CFR 81.83                                                                                                                                
    Valencia County                                                                                                                                     
        see 40 CFR 81.83                                                                                                                                
AQCR 153 El Paso-Las Cruces-Alamogordo..      7/12/95  Nonattainment............................      7/12/95  Marginal.                                
    Dona Ana County (part)-(Sunland Park                                                                                                                
     Area) The area bounded by the New                                                                                                                  
     Mexico-Texas State line on the                                                                                                                     
     east, the New Mexico-Mexico                                                                                                                        
     international line on the south,                                                                                                                   
     Range 3E-Range 2E, line on the                                                                                                                     
     west, and the N3200 latitude line                                                                                                                  
     on the north                                                                                                                                       
    Dona Ana County (remainder of)......  ...........  1 hr. std. N.A.\2\                                                                               
    Lincoln County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Otero County........................  ...........  1 hr. std. N.A.\2\                                                                               
    Sierra County.......................  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 154 Northeastern Plains Intrastate.  ...........  1 hr. std. N.A.\2\                                                                               
    Colfax County                                                                                                                                       
    Guadalupe County                                                                                                                                    
    Harding County                                                                                                                                      
    Mora County                                                                                                                                         
    San Miguel County                                                                                                                                   
    Torrance County                                                                                                                                     
    Union County                                                                                                                                        
AQCR 155 Pecos-Permian Basin Intrastate.  ...........  1 hr. std. N.A.\2\                                                                               
    Chaves County                                                                                                                                       
    Curry County                                                                                                                                        
    De Baca County                                                                                                                                      
    Eddy County                                                                                                                                         
    Lea County                                                                                                                                          
    Quay County                                                                                                                                         
    Roosevelt County                                                                                                                                    
AQCR 156 SW Mountains-Augustine Plains..  ...........  1 hr. std. N.A.\2\                                                                               
    Catron County                                                                                                                                       
    Cibola County                                                                                                                                       
    McKinley County (part)                                                                                                                              
        see 40 CFR 81.241                                                                                                                               
    Socorro County                                                                                                                                      
    Valencia County (part)                                                                                                                              
        see 40 CFR 81.241                                                                                                                               
AQCR 157 Upper Rio Grande Valley          ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Los Alamos County                                                                                                                                   
    Rio Arriba County (part)                                                                                                                            
        see 40 CFR 81.239                                                                                                                               
    Santa Fe County                                                                                                                                     
    Taos County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
 \1\ This date is March 17, 1998, unless otherwise noted.                                                                                               
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    34. In Sec. 81.333, the table entitled ``New York--Ozone'' is 
revised to read as follows:


Sec. 81.333  New York.

* * * * * * *

                                                            New York--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Albany-Schenectady-Troy Area:                                                                                                                           
    Albany County.......................  ...........  1 hr. std. N.A.\3\                                                                               
    Greene County.......................  ...........  1 hr. std. N.A.\3\                                                                               
    Montgomery County...................  ...........  1 hr. std. N.A.\3\                                                                               
    Rensselaer County...................  ...........  1 hr. std. N.A.\3\                                                                               
    Saratoga County.....................  ...........  1 hr. std. N.A.\3\                                                                               
    Schenectady County..................  ...........  1 hr. std. N.A.\3\                                                                               
Buffalo-Niagara Falls Area:                                                                                                                             
    Erie County.........................  ...........  1 hr. std. N.A.\3\                                                                               

[[Page 2775]]

                                                                                                                                                        
    Niagara County......................  ...........  1 hr. std. N.A.\3\                                                                               
Essex County Area:                                                                                                                                      
    Essex County (part).................  ...........  1 hr. std. N.A.\3\                                                                               
        The portion of Whiteface                                                                                                                        
         Mountain above 4500 feet in                                                                                                                    
         elevation in Essex County                                                                                                                      
Jefferson County Area:                                                                                                                                  
    Jefferson County....................  ...........  1 hr. std. N.A.\3\                                                                               
New York-Northern New Jersey-Long Island                                                                                                                
 Area:                                                                                                                                                  
    Bronx County........................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Kings County........................     11/15/90   Nonattainment...........................     11/15/90   Severe-17.                              
    Nassau County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    New York County.....................     11/15/90   Nonattainment...........................     11/15/90  Severe-17.                               
    Orange County (part)................      1/15/92   Nonattainment...........................      1/15/92  Severe-17.                               
        Blooming Grove, Chester,                                                                                                                        
         Highlands, Monroe, Tuxedo,                                                                                                                     
         Warwick, and Woodbury                                                                                                                          
    Queens County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Richmond County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Rockland County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Suffolk County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Westchester County..................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Poughkeepsie Area:                                                                                                                                      
    Dutchess County.....................       1/6/92  Nonattainment............................      11/7/94  Moderate.                                
    Orange County (remainder)...........  \2\ 4/21/94  Nonattainment............................  \2\ 11/7/94  Moderate.                                
    Putnam County.......................      1/15/92   Nonattainment...........................      11/7/94   Moderate.                               
AQCR 158 Central New York Intrastate      ...........  1 hr. std. N.A.\3\                                                                               
 (Remainder of).                                                                                                                                        
    Cayuga County                                                                                                                                       
    Cortland County                                                                                                                                     
    Herkimer County                                                                                                                                     
    Lewis County                                                                                                                                        
    Madison County                                                                                                                                      
    Oneida County                                                                                                                                       
    Onondaga County                                                                                                                                     
    Oswego County                                                                                                                                       
AQCR 159 Champlain Valley Interstate      ...........  1 hr. std. N.A.\3\                                                                               
 (Remainder of).                                                                                                                                        
    Clinton County                                                                                                                                      
    Essex County                                                                                                                                        
    Franklin County                                                                                                                                     
    Hamilton County                                                                                                                                     
    St. Lawrence County                                                                                                                                 
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
AQCR 160 Genessee-Finger Lakes            ...........  1 hr. std. N.A.\3\                                                                               
 Intrastate.                                                                                                                                            
    Genesee County                                                                                                                                      
    Livingston County                                                                                                                                   
    Monroe County                                                                                                                                       
    Ontario County                                                                                                                                      
    Orleans County                                                                                                                                      
    Seneca County                                                                                                                                       
    Wayne County                                                                                                                                        
    Wyoming County                                                                                                                                      
    Yates County                                                                                                                                        
AQCR 161 Hudson Valley Intrastate         ...........  1 hr. std. N.A.\3\                                                                               
 (Remainder of).                                                                                                                                        
    Columbia County                                                                                                                                     
    Fulton County                                                                                                                                       
    Schoharie County                                                                                                                                    
    Ulster County                                                                                                                                       
AQCR 163 Southern Tier East Intrastate..  ...........  1 hr. std. N.A.\3\                                                                               
    Broome County                                                                                                                                       
    Chenango County                                                                                                                                     
    Delaware County                                                                                                                                     
    Otsego County                                                                                                                                       
    Sullivan County                                                                                                                                     
    Tioga County                                                                                                                                        
AQCR 164 Southern Tier West Intrastate..  ...........  1 hr. std. N.A.\3\                                                                               
    Allegany County                                                                                                                                     
    Cattaraugus County                                                                                                                                  
    Chautauqua County                                                                                                                                   
    Chemung County                                                                                                                                      
    Schuyler County                                                                                                                                     
    Steuben County                                                                                                                                      

[[Page 2776]]

                                                                                                                                                        
    Tompkins County                                                                                                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ However, the effective date is November 15, 1990, for purposes of determining the scope of a ``covered area'' under section 211(k)(10)(D), opt-in   
  under section 211(k)(6), and the baseline determination of the 15% reduction in volatile organic compounds under section 182(b)(1).                   
\3\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    35. In Sec. 81.334, the table entitled ``North Carolina--Ozone'' is 
revised to read as follows:


Sec. 81.334  North Carolina.

* * * * * * *

                                                         North Carolina--Ozone (1-Hour Standard)                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Alamance County                                                                                                                                     
    Alexander County                                                                                                                                    
    Alleghany County                                                                                                                                    
    Anson County                                                                                                                                        
    Ashe County                                                                                                                                         
    Avery County                                                                                                                                        
    Beaufort County                                                                                                                                     
    Bertie County                                                                                                                                       
    Bladen County                                                                                                                                       
    Brunswick County                                                                                                                                    
    Buncombe County                                                                                                                                     
    Burke County                                                                                                                                        
    Cabarrus County                                                                                                                                     
    Caldwell County                                                                                                                                     
    Camden County                                                                                                                                       
    Carteret County                                                                                                                                     
    Caswell County                                                                                                                                      
    Catawba County                                                                                                                                      
    Chatham County                                                                                                                                      
    Cherokee County                                                                                                                                     
    Chowan County                                                                                                                                       
    Clay County                                                                                                                                         
    Cleveland County                                                                                                                                    
    Columbus County                                                                                                                                     
    Craven County                                                                                                                                       
    Cumberland County                                                                                                                                   
    Currituck County                                                                                                                                    
    Dare County                                                                                                                                         
    Davidson County                                                                                                                                     
    Davie County                                                                                                                                        
    Durham County                                                                                                                                       
    Duplin County                                                                                                                                       
    Edgecombe County                                                                                                                                    
    Forsyth County                                                                                                                                      
    Franklin County                                                                                                                                     
    Gaston County                                                                                                                                       
    Gates County                                                                                                                                        
    Graham County                                                                                                                                       
    Granville County                                                                                                                                    
    Greene County                                                                                                                                       
    Guilford County                                                                                                                                     
    Halifax County                                                                                                                                      
    Harnett County                                                                                                                                      
    Haywood County                                                                                                                                      
    Henderson County                                                                                                                                    
    Hertford County                                                                                                                                     
    Hoke County                                                                                                                                         
    Hyde County                                                                                                                                         
    Iredell County                                                                                                                                      
    Jackson County                                                                                                                                      
    Johnston County                                                                                                                                     

[[Page 2777]]

                                                                                                                                                        
    Jones County                                                                                                                                        
    Lee County                                                                                                                                          
    Lenoir County                                                                                                                                       
    Lincoln County                                                                                                                                      
    McDowell County                                                                                                                                     
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Martin County                                                                                                                                       
    Mecklenburg County                                                                                                                                  
    Mitchell County                                                                                                                                     
    Montgomery County                                                                                                                                   
    Moore County                                                                                                                                        
    Nash County                                                                                                                                         
    New Hanover County                                                                                                                                  
    Northhampton County                                                                                                                                 
    Onslow County                                                                                                                                       
    Orange County                                                                                                                                       
    Pamlico County                                                                                                                                      
    Pasquotank County                                                                                                                                   
    Pender County                                                                                                                                       
    Perquimans County                                                                                                                                   
    Person County                                                                                                                                       
    Pitt County                                                                                                                                         
    Polk County                                                                                                                                         
    Randolph County                                                                                                                                     
    Richmond County                                                                                                                                     
    Robeson County                                                                                                                                      
    Rockingham County                                                                                                                                   
    Rowan County                                                                                                                                        
    Rutherford County                                                                                                                                   
    Sampson County                                                                                                                                      
    Scotland County                                                                                                                                     
    Stanly County                                                                                                                                       
    Stokes County                                                                                                                                       
    Surry County                                                                                                                                        
    Swain County                                                                                                                                        
    Transylvania County                                                                                                                                 
    Tyrrell County                                                                                                                                      
    Union County                                                                                                                                        
    Vance County                                                                                                                                        
    Wake County                                                                                                                                         
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Watauga County                                                                                                                                      
    Wayne County                                                                                                                                        
    Wilkes County                                                                                                                                       
    Wilson County                                                                                                                                       
    Yadkin County                                                                                                                                       
    Yancey County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    36. In Sec. 81.335, the table entitled ``North Dakota--Ozone'' is 
revised to read as follows:


Sec. 81.335  North Dakota.

* * * * * * *

                                                          North Dakota--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
            Designation area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 130 Metropolitan Fargo-Moorhead:                                                                                                                   
    Interstate..........................  ...........  1 hr. std. N.A.\2\                                                                               
    Cass County                                                                                                                                         
Rest of State, AQCR 172.................  ...........  1 hr. std. N.A.\2\                                                                               
    Adams County                                                                                                                                        
    Barnes County                                                                                                                                       

[[Page 2778]]

                                                                                                                                                        
    Benson County                                                                                                                                       
    Billings County                                                                                                                                     
    Bottineau County                                                                                                                                    
    Bowman County                                                                                                                                       
    Burke County                                                                                                                                        
    Burleigh County                                                                                                                                     
    Cavalier County                                                                                                                                     
    Dickey County                                                                                                                                       
    Divide County                                                                                                                                       
    Dunn County                                                                                                                                         
    Eddy County                                                                                                                                         
    Emmons County                                                                                                                                       
    Foster County                                                                                                                                       
    Golden Valley County                                                                                                                                
    Grand Forks County                                                                                                                                  
    Grant County                                                                                                                                        
    Griggs County                                                                                                                                       
    Hettinger County                                                                                                                                    
    Kidder County                                                                                                                                       
    La Moure County                                                                                                                                     
    Logan County                                                                                                                                        
    McHenry County                                                                                                                                      
    McIntosh County                                                                                                                                     
    McKenzie County                                                                                                                                     
    McLean County                                                                                                                                       
    Mercer County                                                                                                                                       
    Morton County                                                                                                                                       
    Mountrail County                                                                                                                                    
    Nelson County                                                                                                                                       
    Oliver County                                                                                                                                       
    Pembina County                                                                                                                                      
    Pierce County                                                                                                                                       
    Ramsey County                                                                                                                                       
    Ransom County                                                                                                                                       
    Renville County                                                                                                                                     
    Richland County                                                                                                                                     
    Rolette County                                                                                                                                      
    Sargent County                                                                                                                                      
    Sheridan County                                                                                                                                     
    Sioux County                                                                                                                                        
    Slope County                                                                                                                                        
    Stark County                                                                                                                                        
    Steele County                                                                                                                                       
    Stutsman County                                                                                                                                     
    Towner County                                                                                                                                       
    Traill County                                                                                                                                       
    Walsh County                                                                                                                                        
    Ward County                                                                                                                                         
    Wells County                                                                                                                                        
    Williams County                                                                                                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    37. In Sec. 81.336, the table entitled ``Ohio--Ozone'' is revised 
to read as follows:


Sec. 81.336  Ohio.

* * * * * * *

                                                              Ohio--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Canton Area:                                                                                                                                            
    Stark County........................  ...........  1 hr. std. N.A.\2\                                                                               
Cincinnati-Hamilton Area:                                                                                                                               
    Butler County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Clermont County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                

[[Page 2779]]

                                                                                                                                                        
    Hamilton County.....................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
    Warren County.......................     11/15/90  Nonattainment............................     11/15/90  Moderate.                                
Cleveland-Akron-Lorain Area:                                                                                                                            
    Ashtabula County....................  ...........  1 hr. std. N.A.\2\                                                                               
    Cuyahoga County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Geauga County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Lake County.........................  ...........  1 hr. std. N.A.\2\                                                                               
    Lorain County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Medina County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Portage County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Summit County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Clinton County Area:                                                                                                                                    
    Clinton County......................  ...........  1 hr. std. N.A.\2\                                                                               
Columbiana County Area:                                                                                                                                 
    Columbiana County...................  ...........  1 hr. std. N.A.\2\                                                                               
Columbus Area:                                                                                                                                          
    Delaware County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Franklin County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Licking County......................  ...........  1 hr. std. N.A.\2\                                                                               
Dayton-Springfield Area:                                                                                                                                
    Clark County........................       7/5/95  Attainment...............................                                                        
    Greene County.......................       7/5/95  Attainment...............................                                                        
    Miami County........................       7/5/95  Attainment...............................                                                        
    Montgomery County...................       7/5/95  Attainment...............................                                                        
Preble County Area:                                                                                                                                     
    Preble County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Steubenville Area:                                                                                                                                      
    Jefferson County....................  ...........  1 hr. std. N.A.\2\                                                                               
Toledo Area:                                                                                                                                            
    Lucas County........................  ...........  1 hr. std. N.A.\2\                                                                               
    Wood County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Youngstown-Warren-Sharon Area:                                                                                                                          
    Mahoning County.....................  ...........  1 hr. std. N.A.\2\                                                                               
    Trumbull County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Adams County............................  ...........  1 hr. std. N.A.\2\                                                                               
Allen County............................  ...........  1 hr. std. N.A.\2\                                                                               
Ashland County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Athens County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Auglaize County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Belmont County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Brown County............................  ...........  1 hr. std. N.A.\2\                                                                               
Carroll County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Champaign County........................  ...........  1 hr. std. N.A.\2\                                                                               
Coshocton County........................  ...........  1 hr. std. N.A.\2\                                                                               
Crawford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Darke County............................  ...........  1 hr. std. N.A.\2\                                                                               
Defiance County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Erie County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Fairfield County........................  ...........  1 hr. std. N.A.\2\                                                                               
Fayette County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Fulton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Gallia County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Guernsey County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Hancock County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Hardin County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Harrison County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Henry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Highland County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Hocking County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Holmes County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Huron County............................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Knox County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Lawrence County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Logan County............................  ...........  1 hr. std. N.A.\2\                                                                               
Madison County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Marion County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Meigs County............................  ...........  1 hr. std. N.A.\2\                                                                               
Mercer County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Monroe County...........................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2780]]

                                                                                                                                                        
Morgan County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Morrow County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Muskingum County........................  ...........  1 hr. std. N.A.\2\                                                                               
Noble County............................  ...........  1 hr. std. N.A.\2\                                                                               
Ottawa County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Paulding County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Perry County............................  ...........  1 hr. std. N.A.\2\                                                                               
Pickaway County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Pike County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Putnam County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Richland County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Ross County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Sandusky County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Scioto County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Seneca County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Shelby County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Tuscarawas County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Union County............................  ...........  1 hr. std. N.A.\2\                                                                               
Van Wert County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Vinton County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Washington County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Wayne County............................  ...........  1 hr. std. N.A.\2\                                                                               
Williams County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Wyandot County..........................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    38. In Sec. 81.331, the table entitled ``Oklahoma--Ozone'' is 
revised to read as follows:


Sec. 81.337  Oklahoma.

* * * * * * *

                                                            Oklahoma--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 017 Metropolitan Fort Smith          ...........  1 hr. std. N.A.\2\                                                                               
 Interstate.                                                                                                                                            
    Adair County                                                                                                                                        
    Cherokee County                                                                                                                                     
    Le Flore County                                                                                                                                     
    Sequoyah County                                                                                                                                     
AQCR 022 Shreveport-Texarkana-Tyler:                                                                                                                    
    Intrastate..........................  ...........  1 hr. std. N.A.\2\                                                                               
    McCurtain County                                                                                                                                    
AQCR 184 Central Oklahoma Intrastate      ...........  1 hr. std. N.A.\2\                                                                               
 (part).                                                                                                                                                
    Cleveland County                                                                                                                                    
    Oklahoma County                                                                                                                                     
AQCR 184 Central Oklahoma Intrastate      ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Canadian County                                                                                                                                     
    Grady County                                                                                                                                        
    Kingfisher County                                                                                                                                   
    Lincoln County                                                                                                                                      
    Logan County                                                                                                                                        
    McClain County                                                                                                                                      
    Pottawatomie County                                                                                                                                 
AQCR 185 North Central Oklahoma           ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Garfield County                                                                                                                                     
    Grant County                                                                                                                                        
    Kay County                                                                                                                                          
    Noble County                                                                                                                                        
    Payne County                                                                                                                                        
AQCR 186 Northeastern Oklahoma            ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate..                                                                                                                                           
    Craig County                                                                                                                                        
    Creek County                                                                                                                                        
    Delaware County                                                                                                                                     
    Mayes County                                                                                                                                        
    Muskogee County                                                                                                                                     

[[Page 2781]]

                                                                                                                                                        
    Nowata County                                                                                                                                       
    Okmulgee County                                                                                                                                     
    Osage County                                                                                                                                        
    Ottawa County                                                                                                                                       
    Pawnee County                                                                                                                                       
    Rogers County                                                                                                                                       
    Tulsa County                                                                                                                                        
    Wagoner County                                                                                                                                      
    Washington County                                                                                                                                   
AQCR 187 Northwestern Oklahoma            ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Alfalfa County                                                                                                                                      
    Beaver County                                                                                                                                       
    Blaine County                                                                                                                                       
    Cimarron County                                                                                                                                     
    Custer County                                                                                                                                       
    Dewey County                                                                                                                                        
    Ellis County                                                                                                                                        
    Harper County                                                                                                                                       
    Major County                                                                                                                                        
    Roger Mills County                                                                                                                                  
    Texas County                                                                                                                                        
    Woods County                                                                                                                                        
    Woodward County                                                                                                                                     
AQCR 188 Southeastern Oklahoma            ...........   1 hr. std. N.A.\2\......................                                                        
 Intrastate.                                                                                                                                            
    Atoka County                                                                                                                                        
    Bryan County                                                                                                                                        
    Carter County                                                                                                                                       
    Choctaw County                                                                                                                                      
    Coal County                                                                                                                                         
    Garvin County                                                                                                                                       
    Haskell County                                                                                                                                      
    Hughes County                                                                                                                                       
    Johnston County                                                                                                                                     
    Latimer County                                                                                                                                      
    Love County                                                                                                                                         
    Marshall County                                                                                                                                     
    McIntosh County                                                                                                                                     
    Murray County                                                                                                                                       
    Okfuskee County                                                                                                                                     
    Pittsburg County                                                                                                                                    
    Pontotoc County                                                                                                                                     
    Pushmataha County                                                                                                                                   
    Seminole County                                                                                                                                     
AQCR 189 Southwestern Oklahoma            ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Beckham County                                                                                                                                      
    Caddo County                                                                                                                                        
    Comanche County                                                                                                                                     
    Cotton County                                                                                                                                       
    Greer County                                                                                                                                        
    Harmon County                                                                                                                                       
    Jackson County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Kiowa County                                                                                                                                        
    Stephens County                                                                                                                                     
    Tillman County                                                                                                                                      
    Washita County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    39. In Sec. 81.338, the table entitled ``Oregon--Ozone'' is revised 
to read as follows:


Sec. 81.338  Oregon.

* * * * * * *

[[Page 2782]]



                                                             Oregon--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Portland-Vancouver AQMA Area:                                                                                                                           
    Air Quality Maintenance Area:                                                                                                                       
        Clackamas County (part).........  ...........  1 hr. std. N.A.\2\                                                                               
        Multnomah County (part).........  ...........  1 hr. std. N.A.\2\                                                                               
        Washington County (part)........  ...........  1 hr. std. N.A.\2\                                                                               
Salem Area:                                                                                                                                             
    Salem Area Transportation Study:                                                                                                                    
        Marion County (part)............  ...........  1 hr. std. N.A.\2\                                                                               
        Polk County (part)..............  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 190 Central Oregon Intrastate        ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Crook County                                                                                                                                        
    Deschutes County                                                                                                                                    
    Hood River County                                                                                                                                   
    Jefferson County                                                                                                                                    
    Klamath County                                                                                                                                      
    Lake County                                                                                                                                         
    Sherman County                                                                                                                                      
    Wasco County                                                                                                                                        
AQCR 191 Eastern Oregon Intrastate......  ...........  1 hr. std. N.A.\2\                                                                               
    Baker County                                                                                                                                        
    Gilliam County                                                                                                                                      
    Grant County                                                                                                                                        
    Harney County                                                                                                                                       
    Malheur County                                                                                                                                      
    Morrow County                                                                                                                                       
    Umatilla County                                                                                                                                     
    Union County                                                                                                                                        
    Wallowa County                                                                                                                                      
    Wheeler County                                                                                                                                      
AQCR 192 Northwest Oregon Intrastate....  ...........  1 hr. std. N.A.\2\                                                                               
    Clatsop County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Tillamook County                                                                                                                                    
AQCR 193 Portland Interstate (part).....  ...........  1 hr. std. N.A.\2\                                                                               
    Lane County (part)                                                                                                                                  
    Eugene Springfield Air Quality                                                                                                                      
     Maintenance Area                                                                                                                                   
AQCR 193 Portland Interstate (Remainder   ...........  1 hr. std. N.A.\2\                                                                               
 of).                                                                                                                                                   
    Benton County                                                                                                                                       
    Clackamas County (part)                                                                                                                             
        Remainder of county                                                                                                                             
    Columbia County                                                                                                                                     
    Lane County (part)                                                                                                                                  
        Remainder of county                                                                                                                             
    Linn County                                                                                                                                         
    Marion County (part)                                                                                                                                
        area outside the Salem Area                                                                                                                     
         Transportation Study.                                                                                                                          
    Multnomah County (part)                                                                                                                             
        Remainder of county                                                                                                                             
    Polk County (part)                                                                                                                                  
        area outside the Salem Area                                                                                                                     
         Transportation Study.                                                                                                                          
    Washington County (part)                                                                                                                            
        Remainder of county                                                                                                                             
    Yamhill County                                                                                                                                      
AQCR 194 Southwest Oregon Intrastate                                                                                                                    
 (part):                                                                                                                                                
    Jackson County (part):                                                                                                                              
        Medford-Ashland Air Quality       ...........  1 hr. std. N.A.\2\                                                                               
         Maintenance Area                                                                                                                               
AQCR 194 Southwest Oregon Intrastate      ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Coos County                                                                                                                                         
    Curry County                                                                                                                                        
    Douglas County                                                                                                                                      
    Jackson County (part)                                                                                                                               
        Remainder of county                                                                                                                             
    Josephine County                                                                                                                                    
--------------------------------------------------------------------------------------------------------------------------------------------------------
 \1\ This date is March 17, 1998, unless otherwise noted.                                                                                               
 \2\ 1 hour standard Not Applicable.                                                                                                                    

* * * * * * *
    40. In Sec. 81.339, the table entitled ``Pennsylvania--Ozone'' is 
revised to read as follows:


Sec. 81.339  Pennsylvania.

* * * * * * *

[[Page 2783]]



                                                          Pennsylvania--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                                 Type                        
            Designated area            -----------------------------------------------------------------------------------------------------------------
                                          Classification                   Date(1)                    Date(1)                      Type                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
Allentown-Bethlehem-Easton Area:                                                                                                                        
    Carbon County                       .................  1 hr. std. N.A.\3\                                                                           
    Lehigh County                       .................  1 hr. std. N.A.\3\                                                                           
    Northampton County                  .................  1 hr. std. N.A.\3\                                                                           
Altoona Area:                                                                                                                                           
    Blair County                        .................  1 hr. std. N.A.\3\                                                                           
Crawford County Area:                                                                                                                                   
    Crawford County                     .................  1 hr. std. N.A.\3\                                                                           
Erie Area:                                                                                                                                              
    Erie County                         .................  1 hr. std. N.A.\3\                                                                           
Franklin County Area:                                                                                                                                   
    Franklin County:                    .................  1 hr. std. N.A.\3\                                                                           
Greene County Area:                                                                                                                                     
    Greene County:                      .................  1 hr. std. N.A.\3\                                                                           
Harrisburg-Lebanon-Carlisle Area:                                                                                                                       
    Cumberland County                   .................  1 hr. std. N.A.\3\                                                                           
    Dauphin County                      .................  1 hr. std. N.A.\3\                                                                           
    Lebanon County                      .................  1 hr. std. N.A.\3\                                                                           
    Perry County                        .................  1 hr. std. N.A.\3\                                                                           
Johnstown Area:                                                                                                                                         
    Cambria County                      .................  1 hr. std. N.A.\3\                                                                           
    Somerset County                     .................  1 hr. std. N.A.\3\                                                                           
Juniata County Area:                                                                                                                                    
    Juniata County                      .................  1 hr. std. N.A.\3\                                                                           
Lancaster Area:                                                                                                                                         
    Lancaster County                             11/15/90  Nonattainment..........................     11/15/90  Marginal                               
Lawrence County Area:                                                                                                                                   
    Lawrence County                     .................  1 hr.std.N.A.3                                                                               
Northumberland County Area:                                                                                                                             
    Northumberland County               .................  1 hr.std.N.A. 3                                                                              
Philadelphia-Wilmington-Trenton Area:                                                                                                                   
    Bucks County                                 11/15/90  Nonattainment..........................     11/15/90  Severe-15                              
    Chester County                               11/15/90  Nonattainment..........................     11/15/90  Severe-15                              
    Delaware County                              11/15/90  Nonattainment..........................     11/15/90  Severe-15                              
    Montgomery County                            11/15/90  Nonattainment..........................     11/15/90  Severe-15                              
    Philadelphia County                          11/15/90  Nonattainment..........................     11/15/90  Severe-15                              
Pike County Area:                                                                                                                                       
    Pike County                         .................  1 hr.std.N.A.\3\                                                                             
Pittsburgh-Beaver Valley Area:                                                                                                                          
    Allegheny County                             11/15/90  Nonattainment..........................     11/15/90  Moderate.\2\                           
    Armstrong County                             11/15/90  Nonattainment..........................     11/15/90  Moderate.\2\                           
    Beaver County                                11/15/90  Nonattainment..........................     11/15/90  Moderate.\2\                           
    Butler County                                11/15/90  Nonattainment..........................     11/15/90  Moderate.\2\                           
    Fayette County                               11/15/90  Nonattainment..........................     11/15/90  Moderate.\2\                           
    Washington County                            11/15/90  Nonattainment..........................     11/15/90  Moderate.\2\                           
    Westmoreland County                          11/15/90  Nonattainment..........................     11/15/90  Moderate.\2\                           
Reading Area:                                                                                                                                           
    Berks County                        .................  1 hr. std. N.A.\3\                                                                           
Schuylkill County Area:                                                                                                                                 
    Schuylkill County                   .................  1 hr. std. N.A.\3\                                                                           
Scranton-Wilkes-Barre Area:                                                                                                                             
    Columbia County                     .................  1 hr. std. N.A.\3\                                                                           
    Lackawanna County                   .................  1 hr. std. N.A.\3\                                                                           
    Luzerne County                      .................  1 hr. std. N.A.\3\                                                                           
    Monroe County                       .................  1 hr. std. N.A.\3\                                                                           
    Wyoming County                      .................  1 hr. std. N.A.\3\                                                                           
Snyder County Area:                                                                                                                                     
    Snyder County                       .................  1 hr. std. N.A.\3\                                                                           
Susquehanna County Area:                                                                                                                                
    Susquehanna County                  .................  1 hr. std. N.A.\3\                                                                           
Warren County Area:                                                                                                                                     
    Warren County                       .................  1 hr. std. N.A.\3\                                                                           
Wayne County Area:                                                                                                                                      
    Wayne County                        .................  1 hr. std. N.A.\3\                                                                           
York Area:                                                                                                                                              
    Adams County                        .................  1 hr. std. N.A.\3\                                                                           
    York County                         .................  1 hr. std. N.A.\3\                                                                           
Youngstown-Warren-Sharon Area:                                                                                                                          
    Mercer County                       .................  1 hr. std. N.A.\3\                                                                           
AQCR 151 NE Pennsylvania Intrastate                                                                                                                     
 (Remainder of)..                                                                                                                                       

[[Page 2784]]

                                                                                                                                                        
    Bradford County                     .................  1 hr. std. N.A.\3\                                                                           
    Sullivan County                     .................  1 hr. std. N.A.\3\                                                                           
    Tioga County                        .................  1 hr. std. N.A.\3\                                                                           
AQCR 178 NW Pennsylvania Interstate                                                                                                                     
 (Remainder of).                                                                                                                                        
    Cameron County                      .................  1 hr. std. N.A.\3\                                                                           
    Clarion County                      .................  1 hr. std. N.A.\3\                                                                           
    Clearfield County                   .................  1 hr. std. N.A.\3\                                                                           
    Elk County                          .................  1 hr. std. N.A.\3\                                                                           
    Forest County                       .................  1 hr. std. N.A.\3\                                                                           
    Jefferson County                    .................  1 hr. std. N.A.\3\                                                                           
    McKean County                       .................  1 hr. std. N.A.\3\                                                                           
    Potter County                       .................  1 hr. std. N.A.\3\                                                                           
    Venango County                      .................  1 hr. std. N.A.\3\                                                                           
AQCR 195 Central Pennsylvania                                                                                                                           
 Intrastate (Remainder of).                                                                                                                             
    Bedford County                      .................  1 hr. std. N.A.\3\                                                                           
    Centre County                       .................  1 hr. std. N.A.\3\                                                                           
    Clinton County                      .................  1 hr. std. N.A.\3\                                                                           
    Fulton County                       .................  1 hr. std. N.A.\3\                                                                           
    Huntingdon County                   .................  1 hr. std. N.A.\3\                                                                           
    Lycoming County                     .................  1 hr. std. N.A.\3\                                                                           
    Mifflin County                      .................  1 hr. std. N.A.\3\                                                                           
    Montour County                      .................  1 hr. std. N.A.\3\                                                                           
    Union County                        .................  1 hr. std. N.A.\3\                                                                           
AQCR 197 SW Pennsylvania Intrastate                                                                                                                     
 (Remainder of):.                                                                                                                                       
    Indiana County                      .................  1 hr. std. N.A.\3\                                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ Attainment date extended to 11/15/97.                                                                                                               
\3\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    41. In Sec. 81.340, the table entitled ``Rhode Island--Ozone'' is 
revised to read as follows:


Sec. 81.340  Rhode Island.

* * * * * * *

                                                          Rhode Island--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Providence (all of RI) Area:                                                                                                                            
    Bristol County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Kent County.........................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Newport County......................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Providence County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
    Washington County...................     11/15/90  Nonattainment............................     11/15/90  Serious.                                 
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998 unless otherwise noted.                                                                                                 

* * * * * * *
    42. In Sec. 81.341, the table entitled ``South Carolina--Ozone'' is 
revised to read as follows:


Sec. 81.341  South Carolina.

* * * * * * *

                                                      South Carolina--Ozone (O3). (1-Hour Standard)                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Abbeville County                                                                                                                                    
    Aiken County                                                                                                                                        
    Allendale County                                                                                                                                    
    Anderson County                                                                                                                                     

[[Page 2785]]

                                                                                                                                                        
    Bamberg County                                                                                                                                      
    Barnwell County                                                                                                                                     
    Beaufort County                                                                                                                                     
    Berkeley County                                                                                                                                     
    Calhoun County                                                                                                                                      
    Charleston County                                                                                                                                   
    Cherokee County                                                                                                                                     
    Chester County                                                                                                                                      
    Chesterfield County                                                                                                                                 
    Clarendon County                                                                                                                                    
    Colleton County                                                                                                                                     
    Darlington County                                                                                                                                   
    Dillon County                                                                                                                                       
    Dorchester County                                                                                                                                   
    Edgefield County                                                                                                                                    
    Fairfield County                                                                                                                                    
    Florence County                                                                                                                                     
    Georgetown County                                                                                                                                   
    Greenville County                                                                                                                                   
    Greenwood County                                                                                                                                    
    Hampton County                                                                                                                                      
    Horry County                                                                                                                                        
    Jasper County                                                                                                                                       
    Kershaw County                                                                                                                                      
    Lancaster County                                                                                                                                    
    Laurens County                                                                                                                                      
    Lee County                                                                                                                                          
    Lexington County                                                                                                                                    
    Manon County                                                                                                                                        
    Marlboro County                                                                                                                                     
    McCormick County                                                                                                                                    
    Newberry County                                                                                                                                     
    Oconee County                                                                                                                                       
    Orangeburg County                                                                                                                                   
    Pickens County                                                                                                                                      
    Richland County                                                                                                                                     
    Saloda County                                                                                                                                       
    Spartanburg County                                                                                                                                  
    Sumter County                                                                                                                                       
    Union County                                                                                                                                        
    Williamsburg County                                                                                                                                 
    York County                                                                                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998 unless otherwise noted.                                                                                                 
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    43. In Sec. 81.342, the table entitled ``South Dakota--Ozone'' is 
revised to read as follows:


Sec. 81.342  South Dakota.

* * * * * * *

                                                          South Dakota--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Aurora County                                                                                                                                       
    Beadle County                                                                                                                                       
    Bennett County                                                                                                                                      
    Bon Homme County                                                                                                                                    
    Brookings County                                                                                                                                    
    Brown County                                                                                                                                        
    Brule County                                                                                                                                        
    Buffalo County                                                                                                                                      
    Butte County                                                                                                                                        
    Campbell County                                                                                                                                     
    Charles Mix County                                                                                                                                  
    Clark County                                                                                                                                        

[[Page 2786]]

                                                                                                                                                        
    Clay County                                                                                                                                         
    Codington County                                                                                                                                    
    Corson County                                                                                                                                       
    Custer County                                                                                                                                       
    Davison County                                                                                                                                      
    Day County                                                                                                                                          
    Deuel County                                                                                                                                        
    Dewey County                                                                                                                                        
    Douglas County                                                                                                                                      
    Edmunds County                                                                                                                                      
    Fall River County                                                                                                                                   
    Faulk County                                                                                                                                        
    Grant County                                                                                                                                        
    Gregory County                                                                                                                                      
    Haakon County                                                                                                                                       
    Hamlin County                                                                                                                                       
    Hand County                                                                                                                                         
    Hanson County                                                                                                                                       
    Harding County                                                                                                                                      
    Hughes County                                                                                                                                       
    Hutchinson County                                                                                                                                   
    Hyde County                                                                                                                                         
    Jackson County                                                                                                                                      
    Jerauld County                                                                                                                                      
    Jones County                                                                                                                                        
    Kingsbury County                                                                                                                                    
    Lake County                                                                                                                                         
    Lawrence County                                                                                                                                     
    Lincoln County                                                                                                                                      
    Lyman County                                                                                                                                        
    Marshall County                                                                                                                                     
    McCook County                                                                                                                                       
    McPherson County                                                                                                                                    
    Meade County                                                                                                                                        
    Mellette County                                                                                                                                     
    Miner County                                                                                                                                        
    Minnehaha County                                                                                                                                    
    Moody County                                                                                                                                        
    Pennington County                                                                                                                                   
    Perkins County                                                                                                                                      
    Potter County                                                                                                                                       
    Roberts County                                                                                                                                      
    Sanborn County                                                                                                                                      
    Shannon County                                                                                                                                      
    Spink County                                                                                                                                        
    Stanley County                                                                                                                                      
    Sully County                                                                                                                                        
    Todd County                                                                                                                                         
    Tripp County                                                                                                                                        
    Turner County                                                                                                                                       
    Union County                                                                                                                                        
    Walworth County                                                                                                                                     
    Yankton County                                                                                                                                      
    Ziebach County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    44. In Sec. 81.343, the table entitled ``Tennessee--Ozone'' is 
revised to read as follows:


Sec. 81.343  Tennessee.

* * * * * * *

                                                           Tennessee--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Jefferson County Area:                                                                                                                                  

[[Page 2787]]

                                                                                                                                                        
    Jefferson County....................     11/15/90  Unclassifiable/Attainment................     11/15/90                                           
Memphis Area:                                                                                                                                           
    Shelby County.......................      2/16/95  Attainment...............................                                                        
Rest of State...........................  ...........  1 hr.std.N.A. \2\                                                                                
    Anderson County                                                                                                                                     
    Bedford County                                                                                                                                      
    Benton County                                                                                                                                       
    Bledsoe County                                                                                                                                      
    Blount County                                                                                                                                       
    Bradley County                                                                                                                                      
    Campbell County                                                                                                                                     
    Cannon County                                                                                                                                       
    Carroll County                                                                                                                                      
    Carter County                                                                                                                                       
    Cheatham County                                                                                                                                     
    Chester County                                                                                                                                      
    Claiborne County                                                                                                                                    
    Clay County                                                                                                                                         
    Cocke County                                                                                                                                        
    Coffee County                                                                                                                                       
    Crockett County                                                                                                                                     
    Cumberland County                                                                                                                                   
    DeKalb County                                                                                                                                       
    Decatur County                                                                                                                                      
    Dickson County                                                                                                                                      
    Davidson County                                                                                                                                     
    Dyer County                                                                                                                                         
    Fayette County                                                                                                                                      
    Fentress County                                                                                                                                     
    Franklin County                                                                                                                                     
    Gibson County                                                                                                                                       
    Giles County                                                                                                                                        
    Grainger County                                                                                                                                     
    Greene County                                                                                                                                       
    Grundy County                                                                                                                                       
    Hamblen County                                                                                                                                      
    Hamilton County                                                                                                                                     
    Hancock County                                                                                                                                      
    Hardeman County                                                                                                                                     
    Hardin County                                                                                                                                       
    Hawkins County                                                                                                                                      
    Haywood County                                                                                                                                      
    Henderson County                                                                                                                                    
    Henry County                                                                                                                                        
    Hickman County                                                                                                                                      
    Houston County                                                                                                                                      
    Humphreys County                                                                                                                                    
    Jackson County                                                                                                                                      
    Johnson County                                                                                                                                      
    Knox County                                                                                                                                         
    Lake County                                                                                                                                         
    Lauderdale County                                                                                                                                   
    Lawrence County                                                                                                                                     
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Loudon County                                                                                                                                       
    Macon County                                                                                                                                        
    Madison County                                                                                                                                      
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Maury County                                                                                                                                        
    McMinn County                                                                                                                                       
    McNairy County                                                                                                                                      
    Meigs County                                                                                                                                        
    Monroe County                                                                                                                                       
    Montgomery County                                                                                                                                   
    Moore County                                                                                                                                        
    Morgan County                                                                                                                                       
    Obion County                                                                                                                                        
    Overton County                                                                                                                                      

[[Page 2788]]

                                                                                                                                                        
    Perry County                                                                                                                                        
    Pickett County                                                                                                                                      
    Polk County                                                                                                                                         
    Putnam County                                                                                                                                       
    Rhea County                                                                                                                                         
    Roane County                                                                                                                                        
    Robertson County                                                                                                                                    
    Rutherford County                                                                                                                                   
    Scott County                                                                                                                                        
    Sequatchie County                                                                                                                                   
    Sevier County                                                                                                                                       
    Smith County                                                                                                                                        
    Stewart County                                                                                                                                      
    Sullivan County                                                                                                                                     
    Sumner County                                                                                                                                       
    Tipton County                                                                                                                                       
    Trousdale County                                                                                                                                    
    Unicoi County                                                                                                                                       
    Union County                                                                                                                                        
    Van Buren County                                                                                                                                    
    Warren County                                                                                                                                       
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Weakley County                                                                                                                                      
    White County                                                                                                                                        
    Williamson County                                                                                                                                   
    Wilson County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    45. In Sec. 81.344, the table entitled ``Texas--Ozone'' is revised 
to read as follows:


Sec. 81.344  Texas.

* * * * * * *

                                                             Texas--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Beaumont/Port Arthur Area:                                                                                                                              
    Hardin County.......................     11/15/90   Nonattainment...........................       6/3/96   Moderate                                
    Jefferson County....................     11/15/90   Nonattainment...........................       6/3/96   Moderate                                
    Orange County.......................     11/15/90   Nonattainment...........................       6/3/96   Moderate                                
Dallas-Fort Worth Area:                                                                                                                                 
    Collin County.......................     11/15/90   Nonattainment...........................     11/15/90   Moderate                                
    Dallas County.......................     11/15/90   Nonattainment...........................     11/15/90   Moderate                                
    Denton County.......................     11/15/90   Nonattainment...........................     11/15/90   Moderate                                
    Tarrant County......................     11/15/90   Nonattainment...........................     11/15/90   Moderate                                
El Paso Area:                                                                                                                                           
    El Paso County......................     11/15/90   Nonattainment...........................     11/15/90   Serious                                 
Houston-Galveston-Brazoria Area:                                                                                                                        
    Brazoria County.....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
    Chambers County.....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
    Fort Bend County....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
    Galveston County....................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
    Harris County.......................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
    Liberty County......................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
    Montgomery County...................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
    Waller County.......................     11/15/90   Nonattainment...........................     11/15/90   Severe-17                               
Longview Area:                                                                                                                                          
    Gregg County........................     11/15/90   Unclassifiable /Attainment..............     11/15/90  .........................................
Victoria Area:                                                                                                                                          
    Victoria County.....................  ...........  1 hr. std. N.A.\2\                                                                               
AQCR 022 Shreveport-Texarkana-Tyler.....  ...........  1 hr. std. N.A.\2\                                                                               
    Anderson County                                                                                                                                     
    Bowie County                                                                                                                                        

[[Page 2789]]

                                                                                                                                                        
    Camp County                                                                                                                                         
    Cass County                                                                                                                                         
    Cherokee County                                                                                                                                     
    Delta County                                                                                                                                        
    Franklin County                                                                                                                                     
    Harrison County                                                                                                                                     
    Henderson County                                                                                                                                    
    Hopkins County                                                                                                                                      
    Lamar County                                                                                                                                        
    Marion County                                                                                                                                       
    Morris County                                                                                                                                       
    Panola County                                                                                                                                       
    Rains County                                                                                                                                        
    Red River County                                                                                                                                    
    Rusk County                                                                                                                                         
    Smith County                                                                                                                                        
    Titus County                                                                                                                                        
    Upshur County                                                                                                                                       
    Van Zandt County                                                                                                                                    
    Wood County                                                                                                                                         
AQCR 106 S Louisiana-SE Texas Interstate  ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Angelina County                                                                                                                                     
    Houston County                                                                                                                                      
    Jasper County                                                                                                                                       
    Nacogdoches County                                                                                                                                  
    Newton County                                                                                                                                       
    Polk County                                                                                                                                         
    Sabine County                                                                                                                                       
    San Augustine County                                                                                                                                
    San Jacinto County                                                                                                                                  
    Shelby County                                                                                                                                       
    Trinity County                                                                                                                                      
    Tyler County                                                                                                                                        
    Walker County                                                                                                                                       
AQCR 153 El Paso-Las Cruces-Alamogordo..  ...........  1 hr. std. N.A.\2\                                                                               
    Brewster County                                                                                                                                     
    Culberson County                                                                                                                                    
    Hudspeth County                                                                                                                                     
    Jeff Davis County                                                                                                                                   
    Presidio County                                                                                                                                     
AQCR 210 Abilene-Wichita Falls            ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Archer County                                                                                                                                       
    Baylor County                                                                                                                                       
    Brown County                                                                                                                                        
    Callahan County                                                                                                                                     
    Childress County                                                                                                                                    
    Clay County                                                                                                                                         
    Coke County                                                                                                                                         
    Coleman County                                                                                                                                      
    Comanche County                                                                                                                                     
    Concho County                                                                                                                                       
    Cottle County                                                                                                                                       
    Eastland County                                                                                                                                     
    Fisher County                                                                                                                                       
    Foard County                                                                                                                                        
    Hardeman County                                                                                                                                     
    Haskell County                                                                                                                                      
    Jack County                                                                                                                                         
    Jones County                                                                                                                                        
    Kent County                                                                                                                                         
    Knox County                                                                                                                                         
    McCulloch County                                                                                                                                    
    Menard County                                                                                                                                       
    Mitchell County                                                                                                                                     
    Montague County                                                                                                                                     
    Nolan County                                                                                                                                        
    Runnels County                                                                                                                                      
    Scurry County                                                                                                                                       
    Shackelford County                                                                                                                                  
    Stephens County                                                                                                                                     

[[Page 2790]]

                                                                                                                                                        
    Stonewall County                                                                                                                                    
    Taylor County                                                                                                                                       
    Throckmorton County                                                                                                                                 
    Wichita County                                                                                                                                      
    Wilbarger County                                                                                                                                    
    Young County                                                                                                                                        
AQCR 211 Amarillo-Lubbock Intrastate....  ...........  1 hr. std. N.A.\2\                                                                               
    Armstrong County                                                                                                                                    
    Bailey County                                                                                                                                       
    Briscoe County                                                                                                                                      
    Carson County                                                                                                                                       
    Castro County                                                                                                                                       
    Cochran County                                                                                                                                      
    Collingsworth County                                                                                                                                
    Crosby County                                                                                                                                       
    Dallam County                                                                                                                                       
    Deaf Smith County                                                                                                                                   
    Dickens County                                                                                                                                      
    Donley County                                                                                                                                       
    Floyd County                                                                                                                                        
    Garza County                                                                                                                                        
    Gray County                                                                                                                                         
    Hale County                                                                                                                                         
    Hall County                                                                                                                                         
    Hansford County                                                                                                                                     
    Hartley County                                                                                                                                      
    Hemphill County                                                                                                                                     
    Hockley County                                                                                                                                      
    Hutchinson County                                                                                                                                   
    King County                                                                                                                                         
    Lamb County                                                                                                                                         
    Lipscomb County                                                                                                                                     
    Lubbock County                                                                                                                                      
    Lynn County                                                                                                                                         
    Moore County                                                                                                                                        
    Motley County                                                                                                                                       
    Ochiltree County                                                                                                                                    
    Oldham County                                                                                                                                       
    Parmer County                                                                                                                                       
    Potter County                                                                                                                                       
    Randall County                                                                                                                                      
    Roberts County                                                                                                                                      
    Sherman County                                                                                                                                      
    Swisher County                                                                                                                                      
    Terry County                                                                                                                                        
    Wheeler County                                                                                                                                      
    Yoakum County                                                                                                                                       
AQCR 212 Austin-Waco Intrastate.........  ...........  1 hr. std. N.A.\2\                                                                               
    Bastrop County                                                                                                                                      
    Bell County                                                                                                                                         
    Blanco County                                                                                                                                       
    Bosque County                                                                                                                                       
    Brazos County                                                                                                                                       
    Burleson County                                                                                                                                     
    Burnet County                                                                                                                                       
    Caldwell County                                                                                                                                     
    Coryell County                                                                                                                                      
    Falls County                                                                                                                                        
    Fayette County                                                                                                                                      
    Freestone County                                                                                                                                    
    Grimes County                                                                                                                                       
    Hamilton County                                                                                                                                     
    Hays County                                                                                                                                         
    Hill County                                                                                                                                         
    Lampasas County                                                                                                                                     
    Lee County                                                                                                                                          
    Leon County                                                                                                                                         
    Limestone County                                                                                                                                    
    Llano County                                                                                                                                        
    Madison County                                                                                                                                      

[[Page 2791]]

                                                                                                                                                        
    McLennan County                                                                                                                                     
    Milam County                                                                                                                                        
    Mills County                                                                                                                                        
    Robertson County                                                                                                                                    
    San Saba County                                                                                                                                     
    Travis County                                                                                                                                       
    Washington County                                                                                                                                   
    Williamson County                                                                                                                                   
AQCR 213 Brownsville-Laredo Intrastate..  ...........  1 hr. std. N.A.\2\                                                                               
    Cameron County                                                                                                                                      
    Hidalgo County                                                                                                                                      
    Jim Hogg County                                                                                                                                     
    Starr County                                                                                                                                        
    Webb County                                                                                                                                         
    Willacy County                                                                                                                                      
    Zapata County                                                                                                                                       
AQCR 214 Corpus Christi-Victoria          ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate (Remainder of).                                                                                                                             
    Aransas County                                                                                                                                      
    Bee County                                                                                                                                          
    Brooks County                                                                                                                                       
    Calhoun County                                                                                                                                      
    De Witt County                                                                                                                                      
    Duval County                                                                                                                                        
    Goliad County                                                                                                                                       
    Jackson County                                                                                                                                      
    Jim Wells County                                                                                                                                    
    Kenedy County                                                                                                                                       
    Kleberg County                                                                                                                                      
    Lavaca County                                                                                                                                       
    Live Oak County                                                                                                                                     
    McMullen County                                                                                                                                     
    Refugio County                                                                                                                                      
    San Patricio County                                                                                                                                 
AQCR 214 Corpus Christi-Victoria          ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate (part).                                                                                                                                     
    Nueces County                                                                                                                                       
AQCR 215 Metro Dallas-Fort Worth          ...........   1 hr.std.N.A. \2\.......................                                                        
 Intrastate (Remainder of).                                                                                                                             
    Cooke County                                                                                                                                        
    Ellis County                                                                                                                                        
    Erath County                                                                                                                                        
    Fannin County                                                                                                                                       
    Grayson County                                                                                                                                      
    Hood County                                                                                                                                         
    Hunt County                                                                                                                                         
    Johnson County                                                                                                                                      
    Kaufman County                                                                                                                                      
    Navarro County                                                                                                                                      
    Palo Pinto County                                                                                                                                   
    Parker County                                                                                                                                       
    Rockwall County                                                                                                                                     
    Somervell County                                                                                                                                    
    Wise County                                                                                                                                         
AQCR 216 Metro Houston-Galveston          ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate (Remainder of).                                                                                                                             
    Austin County                                                                                                                                       
    Colorado County                                                                                                                                     
    Matagorda County                                                                                                                                    
    Wharton County                                                                                                                                      
AQCR 217 Metro San Antonio Intrastate     ...........  1 hr. std. N.A.\2\                                                                               
 (part).                                                                                                                                                
    Bexar County                                                                                                                                        
AQCR 217 Metro San Antonio Intrastate     ...........  1 hr.std.N.A. \2\                                                                                
 (Remainder of).                                                                                                                                        
    Atascosa County                                                                                                                                     
    Bandera County                                                                                                                                      
    Comal County                                                                                                                                        
    Dimmit County                                                                                                                                       
    Edwards County                                                                                                                                      
    Frio County                                                                                                                                         
    Gillespie County                                                                                                                                    
    Gonzales County                                                                                                                                     
    Guadalupe County                                                                                                                                    

[[Page 2792]]

                                                                                                                                                        
    Karnes County                                                                                                                                       
    Kendall County                                                                                                                                      
    Kerr County                                                                                                                                         
    Kimble County                                                                                                                                       
    Kinney County                                                                                                                                       
    La Salle County                                                                                                                                     
    Mason County                                                                                                                                        
    Maverick County                                                                                                                                     
    Medina County                                                                                                                                       
    Real County                                                                                                                                         
    Uvalde County                                                                                                                                       
    Val Verde County                                                                                                                                    
    Wilson County                                                                                                                                       
    Zavala County                                                                                                                                       
AQCR 218 Midland-Odessa-San Angelo        ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate (part)..                                                                                                                                    
    Ector County                                                                                                                                        
AQCR 218 Midland-Odessa-San Angelo        ...........  1 hr.std.N.A. \2\                                                                                
 Intrastate (Remainder of).                                                                                                                             
    Andrews County                                                                                                                                      
    Borden County                                                                                                                                       
    Crane County                                                                                                                                        
    Crockett County                                                                                                                                     
    Dawson County                                                                                                                                       
    Gaines County                                                                                                                                       
    Glasscock County                                                                                                                                    
    Howard County                                                                                                                                       
    Irion County                                                                                                                                        
    Loving County                                                                                                                                       
    Martin County                                                                                                                                       
    Midland County                                                                                                                                      
    Pecos County                                                                                                                                        
    Reagan County                                                                                                                                       
    Reeves County                                                                                                                                       
    Schleicher County                                                                                                                                   
    Sterling County                                                                                                                                     
    Sutton County                                                                                                                                       
    Terrell County                                                                                                                                      
    Tom Green County                                                                                                                                    
    Upton County                                                                                                                                        
    Ward County                                                                                                                                         
    Winkler County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    46. In Sec. 81.345, the table entitled ``Utah--Ozone'' is revised 
to read as follows:


Sec. 81.345  Utah.

* * * * * * *

                                                              Utah--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Salt Lake City Area:                                                                                                                                    
    Davis County........................  ...........  1 hr. std. N.A.\2\                                                                               
    Salt Lake County....................  ...........  1 hr. std. N.A.\2\                                                                               
Rest of State...........................  ...........  1 hr. std. N.A.\2\                                                                               
    Beaver County                                                                                                                                       
    Box Elder County                                                                                                                                    
    Cache County                                                                                                                                        
    Carbon County                                                                                                                                       
    Daggett County                                                                                                                                      
    Duchesne County                                                                                                                                     
    Emery County                                                                                                                                        
    Garfield County                                                                                                                                     
    Grand County                                                                                                                                        
    Iron County                                                                                                                                         

[[Page 2793]]

                                                                                                                                                        
    Juab County                                                                                                                                         
    Kane County                                                                                                                                         
    Millard County                                                                                                                                      
    Morgan County                                                                                                                                       
    Piute County                                                                                                                                        
    Rich County                                                                                                                                         
    San Juan County                                                                                                                                     
    Sanpete County                                                                                                                                      
    Sevier County                                                                                                                                       
    Summit County                                                                                                                                       
    Tooele County                                                                                                                                       
    Uintah County                                                                                                                                       
    Utah County                                                                                                                                         
    Wasatch County                                                                                                                                      
    Washington County                                                                                                                                   
    Wayne County                                                                                                                                        
    Weber County                                                                                                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    47. In Sec. 81.346, the table entitled ``Vermont--Ozone'' is 
revised to read as follows:


Sec. 81.346  Vermont.

* * * * * * *

                                                            Vermont--Ozone (1-HHour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
AQCR 159 Champlain Calley Interstate      ...........  1 hr. std. N.A.\2\                                                                               
 (part).                                                                                                                                                
    Addison County                                                                                                                                      
    Chittenden County                                                                                                                                   
AQCR 159 Champlain Calley Interstate      ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Franklin County                                                                                                                                     
    Grand Isle County                                                                                                                                   
    Rutland County                                                                                                                                      
AQCR 221 Vermont Intrastate (part)......  ...........  1 hr. std. N.A.\2\                                                                               
    Windsor County                                                                                                                                      
AQCR 221 Vermont Intrastate (Remainder    ...........  1 hr. std. N.A.\2\                                                                               
 of).                                                                                                                                                   
    Bennington County                                                                                                                                   
    Caledonia County                                                                                                                                    
    Essex County                                                                                                                                        
    Lamoille County                                                                                                                                     
    Orange County                                                                                                                                       
    Orleans County                                                                                                                                      
    Washington County                                                                                                                                   
    Windham County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    48. In Section 81.347, the table entitled ``Virginia--Ozone'' is 
revised to read as follows:


Sec. 81.347  Virginia.

* * * * * * *

                                                            Virginia--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Norfolk-Virginia Beach-Newport News                                                                                                                     
 (Hampton Roads) Area:                                                                                                                                  
    Chesapeake..........................  ...........  1 hr. std. N.A.\2\                                                                               
    Hampton.............................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2794]]

                                                                                                                                                        
    James City County...................  ...........  1 hr. std. N.A.\2\                                                                               
    Newport News........................  ...........  1 hr. std. N.A.\2\                                                                               
    Norfolk.............................  ...........  1 hr. std. N.A.\2\                                                                               
    Poquoson............................  ...........  1 hr. std. N.A.\2\                                                                               
    Portsmouth..........................  ...........  1 hr. std. N.A.\2\                                                                               
    Suffolk.............................  ...........  1 hr. std. N.A.\2\                                                                               
    Virginia Beach......................  ...........  1 hr. std. N.A.\2\                                                                               
    Williamsburg........................  ...........  1 hr. std. N.A.\2\                                                                               
    York County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Richmond Area:                                                                                                                                          
    Charles City County (part)..........  ...........  1 hr. std. N.A.\2\                                                                               
        Beginning at the intersection of                                                                                                                
         State Route 156 and the Henrico                                                                                                                
         Charles City County Line,                                                                                                                      
         proceeding south along State                                                                                                                   
         Route 5/156 to the intersection                                                                                                                
         with State Route 106/156,                                                                                                                      
         proceeding south along Route                                                                                                                   
         106/156 to the intersection                                                                                                                    
         with the Prince George/Charles                                                                                                                 
         City County line, proceeding                                                                                                                   
         west along the Prince George/                                                                                                                  
         Charles City County line to the                                                                                                                
         intersection with the                                                                                                                          
         Chesterfield/Charles City                                                                                                                      
         County line, proceeding north                                                                                                                  
         along the Chesterfield/Charles                                                                                                                 
         City County line to the                                                                                                                        
         intersection with the Henrico/                                                                                                                 
         Charles City County line,                                                                                                                      
         proceeding north along the                                                                                                                     
         Henrico/Charles City County                                                                                                                    
         line to State Route 156.                                                                                                                       
    Chesterfield County.................  ...........  1 hr. std. N.A.\2\                                                                               
    Colonial Heights....................  ...........  1 hr. std. N.A.\2\                                                                               
    Hanover County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Henrico County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Hopewell............................  ...........  1 hr. std. N.A.\2\                                                                               
    Richmond............................  ...........  1 hr. std. N.A.\2\                                                                               
Smyth County Area:                                                                                                                                      
    Smyth County (part).................  ...........  1 hr. std. N.A.\2\                                                                               
        The portion of White Top                                                                                                                        
         Mountain above the 4,500 foot                                                                                                                  
         elevation in Smyth County.                                                                                                                     
Washington Area:                                                                                                                                        
    Alexandria..........................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Arlington County....................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Fairfax.............................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Fairfax County......................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Falls Church........................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Loudoun County......................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Manassas............................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Manassas Park.......................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Prince William County...............     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
    Stafford County.....................     11/15/90   Nonattainment...........................     11/15/90   Serious.                                
AQCR 207 Eastern Tennessee--SW Virginia   ...........  1 hr. std. N.A.\2\                                                                               
 Interstate (Remainder of).                                                                                                                             
    Bland County                                                                                                                                        
    Bristol                                                                                                                                             
    Buchanan County                                                                                                                                     
    Carroll County                                                                                                                                      
    Dickenson County                                                                                                                                    
    Galax                                                                                                                                               
    Grayson County                                                                                                                                      
    Lee County                                                                                                                                          
    Norton                                                                                                                                              
    Russell County                                                                                                                                      
    Scott County                                                                                                                                        
    Smyth County (part)                                                                                                                                 
        Remainder of county                                                                                                                             
    Tazewell County                                                                                                                                     
    Washington County                                                                                                                                   
    Wise County                                                                                                                                         
    Wythe County                                                                                                                                        
AQCR 222 Central Virginia Intrastate....  ...........  1 hr. std. N.A.\2\                                                                               
    Amelia County                                                                                                                                       
    Amherst County                                                                                                                                      
    Appomattox County                                                                                                                                   
    Bedford                                                                                                                                             
    Bedford County                                                                                                                                      

[[Page 2795]]

                                                                                                                                                        
    Brunswick County                                                                                                                                    
    Buckingham County                                                                                                                                   
    Campbell County                                                                                                                                     
    Charlotte County                                                                                                                                    
    Cumberland County                                                                                                                                   
    Danville                                                                                                                                            
    Franklin County                                                                                                                                     
    Halifax County                                                                                                                                      
    Henry County                                                                                                                                        
    Lunenburg County                                                                                                                                    
    Lynchburg                                                                                                                                           
    Martinsville                                                                                                                                        
    Mecklenburg County                                                                                                                                  
    Nottoway County                                                                                                                                     
    Patrick County                                                                                                                                      
    Pittsylvania County                                                                                                                                 
    Prince Edward County                                                                                                                                
    South Boston                                                                                                                                        
AQCR 223 Hampton Roads Intrastate         ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Franklin                                                                                                                                            
    Isle Of Wight County                                                                                                                                
    Southampton County                                                                                                                                  
AQCR 224 NE Virginia Intrastate           ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Accomack County                                                                                                                                     
    Albemarle County                                                                                                                                    
    Caroline County                                                                                                                                     
    Charlottesville                                                                                                                                     
    Culpeper County                                                                                                                                     
    Essex County                                                                                                                                        
    Fauquier County                                                                                                                                     
    Fluvanna County                                                                                                                                     
    Fredericksburg                                                                                                                                      
    Gloucester County                                                                                                                                   
    Greene County                                                                                                                                       
    King And Queen County                                                                                                                               
    King George County                                                                                                                                  
    King William County                                                                                                                                 
    Lancaster County                                                                                                                                    
    Louisa County                                                                                                                                       
    Madison County                                                                                                                                      
    Mathews County                                                                                                                                      
    Middlesex County                                                                                                                                    
    Nelson County                                                                                                                                       
    Northampton County                                                                                                                                  
    Northumberland County                                                                                                                               
    Orange County                                                                                                                                       
    Rappahannock County                                                                                                                                 
    Richmond County                                                                                                                                     
    Spotsylvania County                                                                                                                                 
    Westmoreland County                                                                                                                                 
AQCR 225 State Capital Intrastate         ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Charles City County (part)                                                                                                                          
        Remainder of county                                                                                                                             
    Dinwiddie County                                                                                                                                    
    Emporia                                                                                                                                             
    Goochland County                                                                                                                                    
    Greensville County                                                                                                                                  
    New Kent County                                                                                                                                     
    Petersburg                                                                                                                                          
    Powhatan County                                                                                                                                     
    Prince George County                                                                                                                                
    Surry County                                                                                                                                        
    Sussex County                                                                                                                                       
AQCR 226 Valley of Virginia Intrastate..  ...........  1 hr. std. N.A.\2\                                                                               
    Alleghany County                                                                                                                                    
    Augusta County                                                                                                                                      
    Bath County                                                                                                                                         
    Botetourt County                                                                                                                                    
    Buena Vista                                                                                                                                         
    Clarke County                                                                                                                                       

[[Page 2796]]

                                                                                                                                                        
    Clifton Forge                                                                                                                                       
    Covington                                                                                                                                           
    Craig County                                                                                                                                        
    Floyd County                                                                                                                                        
    Frederick County                                                                                                                                    
    Giles County                                                                                                                                        
    Harrisonburg                                                                                                                                        
    Highland County                                                                                                                                     
    Lexington                                                                                                                                           
    Montgomery County                                                                                                                                   
    Page County                                                                                                                                         
    Pulaski County                                                                                                                                      
    Radford                                                                                                                                             
    Roanoke                                                                                                                                             
    Roanoke County                                                                                                                                      
    Rockbridge County                                                                                                                                   
    Rockingham County                                                                                                                                   
    Salem                                                                                                                                               
    Shenandoah County                                                                                                                                   
    Staunton                                                                                                                                            
    Warren County                                                                                                                                       
    Waynesboro                                                                                                                                          
    Winchester                                                                                                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    49. In Sec. 81.348, the table entitled ``Washington--Ozone'' is 
revised to read as follows:


Sec. 81.348  Washington.

* * * * * * *

                                                           Washington--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date \1\                      Type                      Date \1\                      Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Portland--Vancouver AQMA Area:                                                                                                                          
    Clark County (part)                                                                                                                                 
        Air Quality Maintenance Area....  ...........  1 hr.std. N.A.\2\                                                                                
Seattle-Tacoma Area:                                                                                                                                    

[[Page 2797]]

                                                                                                                                                        
The following boundary includes all of    ...........  1 hr. std. N.A.\2\                                                                               
 Pierce County, and all of King County                                                                                                                  
 except a small portion on the north-                                                                                                                   
 east corner and the western portion of                                                                                                                 
 Snohomish County: Starting at the mouth                                                                                                                
 of the Nisqually River extend                                                                                                                          
 northwesterly along the Pierce County                                                                                                                  
 line to the southernmost point of the                                                                                                                  
 west county line of King County; thence                                                                                                                
 northerly along the county line to the                                                                                                                 
 southermost point of the west county                                                                                                                   
 line of Snohomish County; thence                                                                                                                       
 northerly along the county line to the                                                                                                                 
 intersection with SR 532; thence                                                                                                                       
 easterly along the north line of SR 532                                                                                                                
 to the intersection of I-5, continuing                                                                                                                 
 east along the same road now identified                                                                                                                
 as Henning Rd., to the intersection                                                                                                                    
 with SR 9 at Bryant; thence continuing                                                                                                                 
 easterly on Bryant East Rd. and Rock                                                                                                                   
 Creek Rd., also identified as Grandview                                                                                                                
 Rd., approximately 3 miles to the point                                                                                                                
 at which it is crossed by the existing                                                                                                                 
 BPA electrical transmission line;                                                                                                                      
 thence southeasterly along the BPA                                                                                                                     
 transmission line approximately 8 miles                                                                                                                
 to point of the crossing of the south                                                                                                                  
 fork of the Stillaguamish River; thence                                                                                                                
 continuing in a southeasterly direction                                                                                                                
 in a meander line following the bed of                                                                                                                 
 the River to Jordan Road; southerly                                                                                                                    
 along Jordan Road to the north city                                                                                                                    
 limits of Granite Falls; thence                                                                                                                        
 following the north and east city                                                                                                                      
 limits to 92nd St. N.E. and Menzel Lake                                                                                                                
 Rd; thence south-southeasterly along                                                                                                                   
 the Menzel Lake Rd. and the Lake                                                                                                                       
 Roesiger Rd. a distance of                                                                                                                             
 approximately 6 miles to the                                                                                                                           
 northernmost point of Lake Roesiger;                                                                                                                   
 thence southerly along a meander line                                                                                                                  
 following the middle of the Lake and                                                                                                                   
 Roesiger Creek to Woods Creek; thence                                                                                                                  
 southerly along a meander line                                                                                                                         
 following the bed of the Creek                                                                                                                         
 approximately 6 miles to the point the                                                                                                                 
 Creek is crossed by the existing BPA                                                                                                                   
 electrical transmission line; thence                                                                                                                   
 easterly along the BPA transmission                                                                                                                    
 line approximately 0.2 miles; thence                                                                                                                   
 southerly along the BPA Chief Joseph-                                                                                                                  
 Covington electrical transmission line                                                                                                                 
 approximately 3 miles to the north line                                                                                                                
 of SR 2; thence southeasterly along SR                                                                                                                 
 2 to the intersection with the east                                                                                                                    
 county line of King County; thence                                                                                                                     
 south along the county line to the                                                                                                                     
 northernmost point of the east county                                                                                                                  
 line of Pierce County; thence along the                                                                                                                
 county line to the point of beginning                                                                                                                  
 at the mouth of the Nisqually River.                                                                                                                   
AQCR 062 E Washington-N Idaho Interstate  ...........  1 hr. std. N.A.\2\                                                                               
 (part).                                                                                                                                                
    Spokane County                                                                                                                                      
AQCR 062 E Washington-N Idaho Interstate  ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    Adams County                                                                                                                                        
    Asotin County                                                                                                                                       
    Columbia County                                                                                                                                     
    Garfield County                                                                                                                                     
    Grant County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Whitman County                                                                                                                                      
AQCR 193 Portland Interstate (Remainder   ...........  1 hr. std. N.A.\2\                                                                               
 of).                                                                                                                                                   
    Clark County (part)                                                                                                                                 
        Remainder of County                                                                                                                             
    Cowlitz County                                                                                                                                      
    Lewis County                                                                                                                                        
    Skamania County                                                                                                                                     
    Wahkiakum County                                                                                                                                    
AQCR 227 Northern Washington Intrastate.  ...........  1 hr. std. N.A.\2\                                                                               
    Chelan County                                                                                                                                       
    Douglas County                                                                                                                                      
    Ferry County                                                                                                                                        
    Okanogan County                                                                                                                                     
    Pend Oreille County                                                                                                                                 
    Stevens County                                                                                                                                      
AQCR 228 Olympic,-Northwest Washington    ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Clallam County                                                                                                                                      
    Grays Harbor County                                                                                                                                 
    Island County                                                                                                                                       
    Jefferson County                                                                                                                                    
    Mason County                                                                                                                                        

[[Page 2798]]

                                                                                                                                                        
    Pacific County                                                                                                                                      
    San Juan County                                                                                                                                     
    Skagit County                                                                                                                                       
    Thurston County                                                                                                                                     
    Whatcom County                                                                                                                                      
AQCR 229 Puget Sound Intrastate           ...........  1 hr. std. N.A.\2\                                                                               
 (Remainder of).                                                                                                                                        
    King County (Part)                                                                                                                                  
        Remainder of County                                                                                                                             
    Kitsap County                                                                                                                                       
    Snohomish County (Part)                                                                                                                             
        Remainer of County                                                                                                                              
AQCR 230 South Central Washington         ...........  1 hr. std. N.A.\2\                                                                               
 Intrastate.                                                                                                                                            
    Benton County                                                                                                                                       
    Franklin County                                                                                                                                     
    Kittitas County                                                                                                                                     
    Klickitat County                                                                                                                                    
    Walla Walla County                                                                                                                                  
    Yakima County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    50. In Sec. 81.349, the table entitled ``West Virginia--Ozone'' is 
revised to read as follows:


Sec. 81.349  West Virginia.

* * * * * * *

                                                         West Virginia--Ozone (1-Hour Standard)                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated Area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Charleston area:                                                                                                                                        
    Kanawha County......................  ...........  1 hr. std. N.A.\2\                                                                               
    Putnam County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Greenbrier Area:                                                                                                                                        
    Greenbrier County...................  ...........  1 hr. std. N.A.\2\                                                                               
Huntington-Ashland Area:                                                                                                                                
    Cabell County.......................  ...........  1 hr. std. N.A.\2\                                                                               
    Wayne County........................  ...........  1 hr. std. N.A.\2\                                                                               
Parkersburg-Marietta Area:                                                                                                                              
    Wood County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Rest of State...........................  ...........  1 hr. std. N.A.\2\                                                                               
    Barbour County                                                                                                                                      
    Berkeley County                                                                                                                                     
    Boone County                                                                                                                                        
    Braxton County                                                                                                                                      
    Brooke County                                                                                                                                       
    Calhoun County                                                                                                                                      
    Clay County                                                                                                                                         
    Doddridge County                                                                                                                                    
    Fayette County                                                                                                                                      
    Gilmer County                                                                                                                                       
    Grant County                                                                                                                                        
    Hampshire County                                                                                                                                    
    Hancock County                                                                                                                                      
    Hardy County                                                                                                                                        
    Harrison County                                                                                                                                     
    Jackson County                                                                                                                                      
    Jefferson County                                                                                                                                    
    Lewis County                                                                                                                                        
    Lincoln County                                                                                                                                      
    Logan County                                                                                                                                        
    Marion County                                                                                                                                       
    Marshall County                                                                                                                                     
    Mason County                                                                                                                                        
    McDowell County                                                                                                                                     
    Mercer County                                                                                                                                       
    Mineral County                                                                                                                                      

[[Page 2799]]

                                                                                                                                                        
    Mingo County                                                                                                                                        
    Monongalia County                                                                                                                                   
    Monroe County                                                                                                                                       
    Morgan County                                                                                                                                       
    Nicholas County                                                                                                                                     
    Ohio County                                                                                                                                         
    Pendleton County                                                                                                                                    
    Pleasants County                                                                                                                                    
    Pocahontas County                                                                                                                                   
    Preston County                                                                                                                                      
    Raleigh County                                                                                                                                      
    Randolph County                                                                                                                                     
    Ritchie County                                                                                                                                      
    Roane County                                                                                                                                        
    Summers County                                                                                                                                      
    Taylor County                                                                                                                                       
    Tucker County                                                                                                                                       
    Tyler County                                                                                                                                        
    Upshur County                                                                                                                                       
    Webster County                                                                                                                                      
    Wetzel County                                                                                                                                       
    Wirt County                                                                                                                                         
    Wyoming County                                                                                                                                      
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    51. In Sec. 81.350, the table entitled ``Wisconsin--Ozone'' is 
revised to read as follows:


Sec. 81.350  Wisconsin.

* * * * * * *

                                                           Wisconsin--Ozone (1-Hour Standard)                                                           
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designated                                            Classification                    
            Designation area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Door County Area:                                                                                                                                       
    Door County.........................       1/6/92  Nonattainment............................       1/6/92  Rural Transport (Marginal).              
Kewaunee County Area:                                                                                                                                   
    Kewaunee County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Manitowoc County Area:                                                                                                                                  
    Manitowoc County....................       1/6/92  Nonattainment............................       1/6/92  Moderate.                                
Milwaukee-Racine Area:                                                                                                                                  
    Kenosha County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Milwaukee County....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Ozaukee County......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Racine County.......................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Washington County...................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
    Waukesha County.....................     11/15/90  Nonattainment............................     11/15/90  Severe-17.                               
Sheboygan County Area:                                                                                                                                  
    Sheboygan County....................  ...........  1 hr. std. N.A.\2\                                                                               
Walworth County Area:                                                                                                                                   
    Walworth County.....................  ...........  1 hr. std. N.A.\2\                                                                               
Adams County............................  ...........  1 hr. std. N.A.\2\                                                                               
Ashland County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Barron County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Bayfield County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Brown County............................  ...........  1 hr. std. N.A.\2\                                                                               
Buffalo County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Burnett County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Calumet County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Chippewa County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Clark County............................  ...........  1 hr. std. N.A.\2\                                                                               
Columbia County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Crawford County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Dane County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Dodge County............................  ...........  1 hr. std. N.A.\2\                                                                               

[[Page 2800]]

                                                                                                                                                        
Douglas County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Dunn County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Eau Claire County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Florence County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Fond du Lac County......................  ...........  1 hr. std. N.A.\2\                                                                               
Forest County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Grant County............................  ...........  1 hr. std. N.A.\2\                                                                               
Green County............................  ...........  1 hr. std. N.A.\2\                                                                               
Green Lake County.......................  ...........  1 hr. std. N.A.\2\                                                                               
Iowa County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Iron County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Jackson County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Jefferson County........................  ...........  1 hr. std. N.A.\2\                                                                               
Juneau County...........................  ...........  1 hr. std. N.A.\2\                                                                               
La Crosse County........................  ...........  1 hr. std. N.A.\2\                                                                               
Lafayette County........................  ...........  1 hr. std. N.A.\2\                                                                               
Langlade County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Lincoln County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Marathon County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Marinette County........................  ...........  1 hr. std. N.A.\2\                                                                               
Marquette County........................  ...........  1 hr. std. N.A.\2\                                                                               
Menominee County........................  ...........  1 hr. std. N.A.\2\                                                                               
Monroe County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Oconto County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Oneida County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Outagamie County........................  ...........  1 hr. std. N.A.\2\                                                                               
Pepin County............................  ...........  1 hr. std. N.A.\2\                                                                               
Pierce County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Polk County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Portage County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Price County............................  ...........  1 hr. std. N.A.\2\                                                                               
Richland County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Rock County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Rusk County.............................  ...........  1 hr. std. N.A.\2\                                                                               
St. Croix County........................  ...........  1 hr. std. N.A.\2\                                                                               
Sauk County.............................  ...........  1 hr. std. N.A.\2\                                                                               
Sawyer County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Shawano County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Taylor County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Trempealeau County......................  ...........  1 hr. std. N.A.\2\                                                                               
Vernon County...........................  ...........  1 hr. std. N.A.\2\                                                                               
Vilas County............................  ...........  1 hr. std. N.A.\2\                                                                               
Washburn County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Waupaca County..........................  ...........  1 hr. std. N.A.\2\                                                                               
Waushara County.........................  ...........  1 hr. std. N.A.\2\                                                                               
Winnebago County........................  ...........  1 hr. std. N.A.\2\                                                                               
Wood County.............................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    52. In Sec. 81.351, the table entitled ``Wyoming--Ozone'' is 
revised to read as follows:


Sec. 81.351  Wyoming.

* * * * * * *

                                                            Wyoming--Ozone (1-Hour Standard)                                                            
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Albany County                                                                                                                                       
    Big Horn County                                                                                                                                     
    Campbell County                                                                                                                                     
    Carbon County                                                                                                                                       
    Converse County                                                                                                                                     
    Crook County                                                                                                                                        
    Fremont County                                                                                                                                      

[[Page 2801]]

                                                                                                                                                        
    Goshen County                                                                                                                                       
    Hot Springs County                                                                                                                                  
    Johnson County                                                                                                                                      
    Laramie County                                                                                                                                      
    Lincoln County                                                                                                                                      
    Natrona County                                                                                                                                      
    Niobrara County                                                                                                                                     
    Park County                                                                                                                                         
    Platte County                                                                                                                                       
    Sheridan County                                                                                                                                     
    Sublette County                                                                                                                                     
    Sweetwater County                                                                                                                                   
    Teton County                                                                                                                                        
    Uinta County                                                                                                                                        
    Washakie County                                                                                                                                     
    Weston County                                                                                                                                       
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    53. In Sec. 81.352, the table entitled ``American Samoa--Ozone'' is 
revised to read as follows:


Sec. 81.352  American Samoa.

* * * * * * *

                                                         American Samoa--Ozone (1-Hour Standard)                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    54. In Sec. 81.353, the table entitled ``Guam--Ozone'' is revised 
to read as follows:


Sec. 81.353  Guam.

* * * * * * *

                                                              Guam--Ozone (1-Hour Standard)                                                             
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    55. In Section 81.354, the table entitled ``Northern Mariana 
Islands--Ozone'' is revised to read as follows:


Sec. 81.354  Northern Mariana Islands.

* * * * * * *

                                                    Northern Mariana Islands--Ozone (1-Hour Standard)                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Whole State.............................  ...........  1 hr. std. N.A.\2\                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    56. In Sec. 81.355, the table entitled ``Puerto Rico--Ozone'' is 
revised to read as follows:

[[Page 2802]]

Sec. 81.355  Puerto Rico.

* * * * * * *

                                                          Puerto Rico--Ozone (1-Hour Standard)                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    Adjuntas Municipio                                                                                                                                  
    Aguada Municipio                                                                                                                                    
    Aguadilla Municipio                                                                                                                                 
    Aguas Buenas Municipio                                                                                                                              
    Aibonito Municipio                                                                                                                                  
    Anasco Municipio                                                                                                                                    
    Arecibo Municipio                                                                                                                                   
    Arroyo Municipio                                                                                                                                    
    Barceloneta Municipio                                                                                                                               
    Barranquitas Munic.                                                                                                                                 
    Bayamon County                                                                                                                                      
    Caba Rojo Municipio                                                                                                                                 
    Caguas Municipio                                                                                                                                    
    Camuy Municipio                                                                                                                                     
    Canovanas Municipio                                                                                                                                 
    Carolina Municipio                                                                                                                                  
    Catano County                                                                                                                                       
    Cayey Municipio                                                                                                                                     
    Ceiba Municipio                                                                                                                                     
    Ciales Municipio                                                                                                                                    
    Cidra Municipio                                                                                                                                     
    Coama Municipio                                                                                                                                     
    Comeria Municipio                                                                                                                                   
    Corozal Municipio                                                                                                                                   
    Culebra Municipio                                                                                                                                   
    Dorado Municipio                                                                                                                                    
    Fajardo Municipio                                                                                                                                   
    Florida Municipio                                                                                                                                   
    Guanica Municipio                                                                                                                                   
    Guayama Municipio                                                                                                                                   
    Guayanilla Municipio                                                                                                                                
    Guaynabo County                                                                                                                                     
    Gurabo Municipio                                                                                                                                    
    Hatillo Municipio                                                                                                                                   
    Hormigueros Municipio                                                                                                                               
    Humacao Municipio                                                                                                                                   
    Isabela Municipio                                                                                                                                   
    Jayuya Municipio                                                                                                                                    
    Juana Diaz Municipio                                                                                                                                
    Juncos Municipio                                                                                                                                    
    Lajas Municipio                                                                                                                                     
    Lares Municipio                                                                                                                                     
    Las Marias Municipio                                                                                                                                
    Las Piedras Municipio                                                                                                                               
    Loiza Municipio                                                                                                                                     
    Luquillo Municipio                                                                                                                                  
    Manati Municipio                                                                                                                                    
    Maricao Municipio                                                                                                                                   
    Maunabo Municipio                                                                                                                                   
    Mayaguez Municipio                                                                                                                                  
    Moca Municipio                                                                                                                                      
    Morovis Municipio                                                                                                                                   
    Naguabo Municipio                                                                                                                                   
    Naranjito Municipio                                                                                                                                 
    Orocovis Municipio                                                                                                                                  
    Patillas Municipio                                                                                                                                  
    Penuelas Municipio                                                                                                                                  
    Ponce Municipio                                                                                                                                     
    Quebradillas Municipio                                                                                                                              
    Rincon Municipio                                                                                                                                    
    Rio Grande Municipio                                                                                                                                
    Sabana Grande Municipio                                                                                                                             
    Salinas Municipio                                                                                                                                   
    San German Municipio                                                                                                                                
    San Juan Municipio                                                                                                                                  
    San Lorenzo Municipio                                                                                                                               

[[Page 2803]]

                                                                                                                                                        
    San Sebastian Municipio                                                                                                                             
    Santa Isabel Municipio                                                                                                                              
    Toa Alta Municipio                                                                                                                                  
    Toa Baja County                                                                                                                                     
    Trujilla Alto Municipio                                                                                                                             
    Utuado Municipio                                                                                                                                    
    Vega Alta Municipio                                                                                                                                 
    Vega Baja Municipio                                                                                                                                 
    Vieques Municipio                                                                                                                                   
    Villalba Municipio                                                                                                                                  
    Yabucoa Municipio                                                                                                                                   
    Yauco Municipio                                                                                                                                     
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
    57. In Sec. 81.356, the table entitled ``Virgin Islands--Ozone'' is 
revised to read as follows:


Sec. 81.356  Virgin Islands.

* * * * * * *

                                                         Virgin Islands--Ozone (1-Hour Standard)                                                        
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                Designation                                           Classification                    
             Designated area             ---------------------------------------------------------------------------------------------------------------
                                            Date\1\                       Type                      Date\1\                       Type                  
--------------------------------------------------------------------------------------------------------------------------------------------------------
Statewide...............................  ...........  1 hr. std. N.A.\2\                                                                               
    St. Croix                                                                                                                                           
    St. John                                                                                                                                            
    St. Thomas                                                                                                                                          
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ This date is March 17, 1998, unless otherwise noted.                                                                                                
\2\ 1 hour standard Not Applicable.                                                                                                                     

* * * * * * *
[FR Doc. 98-935 Filed 1-15-98; 8:45 am]
BILLING CODE 6560-50-P