[Federal Register Volume 62, Number 134 (Monday, July 14, 1997)]
[Rules and Regulations]
[Pages 37494-37506]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-18403]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[IL117-1a; FRL-5857-3]


Approval and Promulgation of State Implementation Plan; Illinois

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule.

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SUMMARY: In this action, EPA is approving, as revisions to the Illinois 
State Implementation Plan (SIP): Rate-Of-Progress (ROP) plans for the 
purpose of reducing Volatile Organic Compound (VOC) emissions in the 
Chicago ozone nonattainment area (Cook, DuPage, Kane, Lake, McHenry, 
and Will Counties, Oswego Township in Kendall County, and Aux Sable and 
Goose Lake Townships in Grundy County) and in the Metro-East St. Louis 
ozone nonattainment area (Madison, Monroe, and St. Clair Counties) by 
15 percent by November 15, 1996, relative to 1990 baseline emissions; 
contingency plans for the same ozone nonattainment areas for the 
purpose of achieving an additional 3 percent VOC emission reductions 
beyond the 15 percent ROP plans; and transportation control measures 
(TCM) for the Metro-East St. Louis area. Emissions of VOC react with 
nitrogen oxides in sunlight to form ground-level ozone, commonly known 
as smog. High concentrations of ground-level ozone can aggravate 
asthma, cause inflammation of lung tissue, decrease lung function, and 
impair the body's defenses against respiratory infection. In this 
action, EPA is approving Illinois' 15% ROP and contingency plans 
through a ``direct final'' rulemaking; the rationale for this approval 
is set forth below.

DATES: This final rule is effective September 12, 1997 unless adverse 
written comments are received by

[[Page 37495]]

August 13, 1997. If the effective date is delayed, timely notice will 
be published in the Federal Register.

ADDRESSES: Comments may be mailed to: J. Elmer Bortzer, Chief, 
Regulation Development Section, Environmental Protection Agency, Region 
5, Air and Radiation Division, Air Programs Branch (AR-18J), 77 West 
Jackson Boulevard, Chicago, Illinois 60604.
    Copies of the SIP revision request are available for inspection at 
the following address: (It is recommended that you telephone Mark J. 
Palermo at (312) 886-6082, before visiting the Region 5 office).

U.S. Environmental Protection Agency, Region 5, Air and Radiation 
Division, 77 West Jackson Boulevard, Chicago, Illinois, 60604.

FOR FURTHER INFORMATION CONTACT: Mark J. Palermo, Environmental 
Protection Specialist, at (312) 886-6082.

SUPPLEMENTARY INFORMATION:

I. Background on Rate-Of-Progress and Contingency Plan Requirements and 
EPA Review Criteria

    On November 15, 1990, Congress enacted amendments to the Clean Air 
Act (Act); Pub. L. 101-549, 104, Stat. 2399, codified at 42 U.S.C. 
7401-7671q. Section 182(b)(1) of the Act requires States with ozone 
nonattainment areas classified as moderate and above to submit ROP 
plans to reduce VOC emissions by 15 percent from 1990 levels by 
November 15, 1996, accounting for growth in the VOC emissions occurring 
after 1990. For purposes of these plans, the Act, under sections 
182(b)(1)(B) and (D), defines baseline emissions as the total amounts 
of actual VOC emissions from all anthropogenic sources in the ozone 
nonattainment areas during the calendar year of the enactment of the 
revision of the Act (1990), subtracting or factoring out emission 
reductions achieved by the Federal Motor Vehicle Emissions Control 
Program (FMVCP) regulations promulgated before January 1, 1990, and by 
the 1990 gasoline Reid Vapor Pressure (RVP) regulations (55 FR 23666, 
June 11, 1990). 1 The baseline emissions are also referred 
to as the ``1990 adjusted base year inventories.'' EPA interprets 
``calendar year'' emissions to consist of typical ozone season weekday 
emissions, because the ozone National Ambient Air Quality Standard 
(NAAQS) (0.12 parts per million, one-hour average) is generally 
exceeded or violated during ozone season weekdays when ozone precursor 
emissions and meteorological conditions are the most conducive to ozone 
formation. (See ``State Implementation Plans: General Preamble for the 
Implementation of Title I of the Clean Air Act Amendments of 1990,'' 
proposed rule (57 FR 13507), Federal Register, April 16, 1992 
(hereafter referred to as the General Preamble)).
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    \1\ The 1990 RVP regulations limit the volatility of gasoline in 
ozone nonattainment areas during the ozone season. The FMVCP 
provides vehicle emission limits that automobile manufacturers must 
meet in designing and building new automobiles.
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    Section 182(b)(1)(D) of the Act places limits on what emission 
reductions can be claimed by ROP plans. All permanent and enforceable 
VOC emission reductions occurring after 1990 are creditable with the 
following exceptions: (1) those resulting from any emission control 
measure relating to motor vehicle exhaust and evaporative emissions 
promulgated by the Administrator by January 1, 1990; (2) those due to 
RVP regulations promulgated by the Administrator by November 15, 1990, 
or due to regulations required under section 211(h) of the Act; (3) 
those due to measures to correct Reasonably Available Control 
Technology (RACT) regulations as required under section 182(a)(2)(A) of 
the Act; and (4) those due to measures to correct previously noted 
problems in an existing vehicle inspection and maintenance (I/M) 
program as required under section 182(a)(2)(B) of the Act.
    Section 172(c)(9) of the Act requires States with ozone 
nonattainment areas classified as moderate and above to adopt 
contingency measures by November 15, 1993. Such measures must provide 
for the implementation of specific emission control measures if an 
ozone nonattainment area fails to achieve ROP or fails to attain the 
NAAQS within the time-frames specified under the Act. Section 182(c)(9) 
of the Act requires that, in addition to the contingency measures 
required under section 172(c)(9), the contingency measure SIP revision 
for serious and above ozone nonattainment areas must also provide for 
the implementation of specific measures if the area fails to meet any 
applicable milestone in the Act. As provided by these sections of the 
Act, the contingency measures must take effect without further action 
by the State or by the EPA Administrator upon failure by the State to 
meet ROP requirements or attainment of the NAAQS by the required 
deadline, or other applicable milestones of the Act.
    The General Preamble states that the contingency measures, in 
total, must generally provide for 3 percent reductions from the 1990 
baseline emissions. While all contingency measures must be fully 
adopted rules or measures, States can use the measures in two different 
ways. A State can choose to implement contingency measures before the 
November 15, 1996, ROP milestone deadline. Alternatively, a State may 
decide not to implement a contingency measure until an area has 
actually failed to achieve a ROP or attainment milestone. In the latter 
situation, the contingency measure emission reduction must be achieved 
within one year following identification of a milestone failure.
    The EPA has developed a number of guidelines addressing the review 
of ROP and contingency plans and addressing such topics as: (1) the 
relationship of ROP plans to other SIP elements required by the Act; 
(2) recommended emission reduction levels for various control measures 
including Federal emission control measures; and (3) emission inventory 
projection procedures. All relevant guidelines are listed below.
    1. Procedures for Preparing Emissions Projections, EPA-450/4-91-
019, Environmental Protection Agency, July 1991.
    2. State Implementation Plans; General Preamble for the 
Implementation of Title I of the Clean Air Act Amendments of 1990; 
Proposed rule (57 FR 13498), Federal Register, April 16, 1992.
    3. ``November 15, 1992, Deliverables for Reasonable Further 
Progress and Modeling Emission Inventories,'' memorandum from J. David 
Mobley, Edwin L. Meyer, and G. T. Helms, Office of Air Quality Planning 
and Standards, Environmental Protection Agency, August 7, 1992.
    4. Guidance on the Adjusted Base Year Emissions Inventory and the 
1996 Target for the 15 Percent Rate of Progress Plans, EPA-452/R-92-
005, Environmental Protection Agency, October 1992.
    5. ``Quantification of Rule Effectiveness Improvements,'' 
memorandum from G. T. Helms, Chief, Ozone/Carbon Monoxide Programs 
Branch, Office of Air Quality Planning and Standards, Environmental 
Protection Agency, October 1992.
    6. Guidance for Growth Factors, Projections, and Control Strategies 
for the 15 Percent Rate-of-Progress Plans, EPA-452/R-93-002, March 
1993.
    7. ``Correction to `Guidance on the Adjusted Base Year Emissions 
Inventory and the 1996 Target for the 15 Percent Rate of Progress 
Plans','' memorandum from G. T. Helms, Chief, Ozone/Carbon Monoxide 
Programs Branch, Office of Air Quality Planning and Standards,

[[Page 37496]]

Environmental Protection Agency, March 2, 1993.
    8. ``15 Percent Rate-of-Progress Plans,'' memorandum from G. T. 
Helms, Chief, Ozone/Carbon Monoxide Programs Branch, Office of Air 
Quality Planning and Standards, Environmental Protection Agency, March 
16, 1993.
    9. Guidance on the Relationship Between the 15 Percent Rate-of-
Progress Plans and Other Provisions of the Clean Air Act, EPA-452/R-93-
007, Environmental Protection Agency, May 1993.
    10. ``Credit Toward the 15 Percent Rate-of-Progress Reductions from 
Federal Measures,'' memorandum from G. T. Helms, Chief, Ozone/Carbon 
Monoxide Programs Branch, Environmental Protection Agency, May 6, 1993.
    11. Guidance on Preparing Enforceable Regulations and Compliance 
Programs for the 15 Percent Rate-of-Progress Plans, EPA-452/R-93-005, 
Environmental Protection Agency, June 1993.
    12. ``Correction Errata to the 15 Percent Rate-of-Progress Plan 
Guidance Series,'' memorandum from G. T. Helms, Chief, Ozone and Carbon 
Monoxide Programs Branch, Environmental Protection Agency, July 28, 
1993.
    13. ``Early Implementation of Contingency Measures for Ozone and 
Carbon Monoxide (CO) Nonattainment Areas,'' memorandum from G. T. 
Helms, Chief, Ozone/Carbon Monoxide Programs Branch, Environmental 
Protection Agency, August 13, 1993.
    14. ``Region III Questions on Emission Projections for the 15 
Percent Rate-of-Progress Plans,'' memorandum from G.T. Helms, Chief, 
Ozone/Carbon Monoxide Programs Branch, Office of Air Quality Planning 
and Standards, Environmental Protection Agency, August 17, 1993.
    15. ``Guidance on Issues Related to 15 Percent Rate-of-Progress 
Plans,'' memorandum from Michael H. Shapiro, Acting Assistant 
Administrator for Air and Radiation, Environmental Protection Agency, 
August 23, 1993.
    16. ``Credit Toward the 15 Percent Requirements from Architectural 
and Industrial Maintenance Coatings,'' memorandum from John S. Seitz, 
Director, Office of Air Quality Planning and Standards, Environmental 
Protection Agency, September 10, 1993.
    17. ``Reclassification of Areas to Nonattainment and 15 Percent 
Rate-of-Progress Plans,'' memorandum from John S. Seitz, Director, 
Office of Air Quality Planning and Standards, Environmental Protection 
Agency, September 20, 1993.
    18. ``Clarification of Guidance for Growth Factors, Projections and 
Control Strategies for the 15 Percent Rate of Progress Plans,'' 
memorandum from G. T. Helms, Chief, Ozone/Carbon Monoxide Programs 
Branch, Office of Air Quality Planning and Standards, Environmental 
Protection Agency, October 6, 1993.
    19. ``Review and Rulemaking on 15 Percent Rate-of-Progress Plans,'' 
memorandum from G. T. Helms, Chief, Ozone/Carbon Monoxide Programs 
Branch, Office of Air Quality Planning and Standards, Environmental 
Protection Agency, October 6, 1993.
    20. ``Questions and Answers from the 15 Percent Rate-of-Progress 
Plan Workshop,'' memorandum from G. T. Helms, Chief, Ozone/Carbon 
Monoxide Programs Branch, Environmental Protection Agency, October 29, 
1993.
    21. ``Rate-of-Progress Plan Guidance on the 15 Percent 
Calculations,'' memorandum from D. Kent Berry, Acting Director, Air 
Quality Management Division, Environmental Protection Agency, October 
29, 1993.
    22. ``Clarification of Issues Regarding the Contingency Measures 
that are due November 15, 1993, for Moderate and Above Ozone 
Nonattainment Areas,'' memorandum from D. Kent Berry, Acting Director, 
Air Quality Management Division, Environmental Protection Agency, 
November 8, 1993.
    23. ``Credit for 15 percent Rate-of-Progress Plan Reductions from 
the Architectural and Industrial Maintenance (AIM) Coating Rule,'' 
memorandum from John S. Seitz, Director, Office of Air Quality Planning 
and Standards, Environmental Protection Agency, December 9, 1993.
    24. ``Guidance on Projection of Nonroad Inventories to Future 
Years,'' memorandum from Philip A. Lorang, Director, Emission Planning 
and Strategies Division, Office of Air and Radiation, Environmental 
Protection Agency, February 4, 1994.
    25. ``Discussion at the Division Directors Meeting on June 1 
Concerning the 15 Percent and 3 Percent Calculations,'' memorandum from 
G. T. Helms, Chief, Ozone/Carbon Monoxide Programs Branch, Office of 
Air Quality Planning and Standards, Environmental Protection Agency, 
June 2, 1994.
    26. ``Future Nonroad Emission Reduction Credits for Court-Ordered 
Nonroad Standards,'' memorandum from Philip A. Lorang, Director, 
Emission Planning and Strategies Division, Office of Air and Radiation, 
Environmental Protection Agency, November 28, 1994.
    27. ``Credit for the 15 Percent Rate-of-Progress Plans for 
Reductions from the Architectural and Industrial Maintenance (AIM) 
Coating Rule and the Autobody Refinishing Rule,'' memorandum from John 
S. Seitz, Director, Office of Air Quality Planning and Standards, 
Environmental Protection Agency, November 29, 1994.
    28. ``Transmittal of Rule Effectiveness Protocol for 1996 
Demonstrations,'' memorandum from Susan E. Bromm, Director, Chemical, 
Commercial Services and Municipal Division, Office of Compliance, 
Environmental Protection Agency, December 22, 1994.
    29. ``Future Nonroad Emission Reduction Credits for Locomotives,'' 
memorandum from Philip A. Lorang, Director, Emission Planning and 
Strategies Division, Office of Air and Radiation, Environmental 
Protection Agency, January 3, 1995.
    30. ``Credit for the 15 Percent Rate-of-Progress Plans for 
Reductions from the Architectural and Industrial Maintenance (AIM) 
Coating Rule,'' memorandum from John S. Seitz, Director, Office of Air 
Quality Planning and Standards, Environmental Protection Agency, March 
22, 1995.
    31. ``Fifteen Percent Rate-of-Progress Plans--Additional 
Guidance,'' memorandum from John S. Seitz, Director, Office of Air 
Quality Planning and Standards, Environmental Protection Agency, May 5, 
1995.
    32. ``Update on the credit for the 15 percent Rate-of-Progress 
Plans for Reductions from the Architectural and Industrial Maintenance 
Coatings Rule,'' memorandum from John S. Seitz, Director, Office of Air 
Quality Planning and Standards, Environmental Protection Agency, March 
7, 1996.

II. Rate-Of-Progress and Contingency Plan Submittals for the 
Chicago and Metro-East St. Louis Ozone Nonattainment Areas

A. Administrative Actions/Requirements

    The Act requires States to observe certain procedural requirements 
in developing SIPs and SIP revisions for submittal to the EPA. Sections 
110(a)(2) and 110(l) of the Act provide that each SIP submitted by a 
State must be adopted by the State after reasonable notice and public 
hearing.
    The State of Illinois held a public hearing on October 15, 1993, to 
hear and collect public comments on the 15 percent ROP and 3 percent 
contingency plans for both the Chicago and the Metro-East St. Louis 
ozone nonattainment areas. Subsequently, the plans were adopted by the 
State and submitted to EPA on November 15, 1993. The submittals 
included records

[[Page 37497]]

of public comments, hearing records, and responses to public comments. 
The plans were supplemented with additional submittals to the EPA on 
February 18, 1994, November 22, 1994, January 31, 1995, and May 23, 
1995. These subsequent submittals contain supplemental documentation on 
the State's emission reduction estimates for various source categories. 
At EPA's request, the Illinois Environmental Protection Agency (IEPA) 
made additional submittals of technical support information and updated 
emission estimates on May 9, 1996, and July 22, 1996. All of the above 
submittals are considered to be part of the record of decision for this 
rulemaking. All submittals are available for review at the EPA Region 5 
offices noted above.
    On January 21, 1994, by letter, the EPA found the November 1993, 
submittals to be incomplete due to an incomplete set of State emission 
control regulations. Subsequently, the State adopted and submitted all 
required regulations. EPA found the ROP and contingency plan submittals 
to be complete, by letter, on June 15, 1995.

B. Accurate Emission Inventories

    Sections 172(c)(3) and 182(b)(1) of the Act require nonattainment 
plans to include and be based on comprehensive, accurate, and current 
inventories of actual emissions from all sources of relevant pollutants 
in the nonattainment areas. On March 14, 1995 (60 FR 13631), EPA 
approved base year (1990) VOC emission inventories for the Chicago and 
Metro-East St. Louis ozone nonattainment areas (the inventories also 
included major source emissions from surrounding areas). The VOC 
emissions from these emission inventories establish the baseline for 
Illinois' ROP and contingency plans.
    It should be noted throughout the discussions that follow that 
volatile organic emissions are referred to as VOC emissions. In the 
Illinois ROP and contingency plans (as well as in the base year 
emission inventory documentation), the State uses the term ``Volatile 
Organic Material (VOM)'' rather than VOC. The State's definition of VOM 
is equivalent to EPA's definition of VOC. The two terms are 
interchangeable when discussing volatile organic emissions. For 
consistency with the Act and with EPA policy, the term VOC is used in 
this rulemaking. VOC emissions referred to in today's action are 
identical to VOM emissions referred to in Illinois' ROP and contingency 
measure plans.

C. Required VOC Emission Reductions

    Following EPA ROP guidelines (primarily guidance contained in the 
Guidance on the Adjusted Base Year Emissions Inventory and the 1996 
Target of the 15 Percent Rate of Progress Plans, EPA-452/R-92-005, 
October 1992, and in the Guidance for Growth Factors, Projections, and 
Control Strategies for the 15 Percent Rate-of-Progress Plans, EPA-452/
R-93-002, March 1993), the IEPA has determined that creditable VOC 
reductions (as opposed to noncreditable emission reductions defined in 
section 182(b)(1)(D) of the Act) of 249.98 tons per day (TPD) for the 
Chicago ozone nonattainment area, and 26.66 TPD for the Metro-East St. 
Louis ozone nonattainment area are needed to achieve the 15% ROP 
requirement. To meet the 3 percent contingency requirement, the IEPA 
determined that the contingency measures must also achieve a 31.92 TPD 
VOC emission reduction in the Chicago ozone nonattainment area and 4.96 
TPD VOC emission reduction in the Metro-East St. Louis ozone 
nonattainment area. The IEPA has fully documented the calculation of 
these emission reduction requirements and has shown that EPA 
recommended procedures were followed. This documentation includes 
identification of emission/source growth factors and noncreditable 
emission reductions from emission controls referenced in section 
182(b)(1)(D) of the Act. Tables 1 and 2 summarize the calculation of 
emission reductions needed by 1996.

   Table 1.--Emission Reductions Required by 1996 for the Chicago Area  
------------------------------------------------------------------------
                                                              Tons VOC/ 
           Calculation of reduction needs by 1996                day    
------------------------------------------------------------------------
1990 Chicago Area Total VOC Emissions......................     1,363.40
1990 ROP Emissions (Anthropogenic only)....................     1,216.56
1990-1996 Noncreditable Reductions (Reductions from 1990                
 RVP, Pre-1990 FMVCP, and RACT Fix-up Regulations).........       199.93
1990 Adjusted Base Year Emissions (1990 ROP Emissions minus             
 Noncreditable Reductions).................................     1,064.05
15 Percent of Adjusted Base Year Emissions.................       159.61
Total Required Emission Reductions by 1996 (15 Percent of               
 Adjusted Base Year Emissions plus Noncreditable                        
 Reductions)...............................................       359.54
1996 Target Level (1990 ROP Emissions minus Total Required              
 Emission Reductions by 1996)..............................       857.02
1996 Projected Emissions (1990 Adjusted Base Year Emissions             
 plus Growth Factors)......................................     1,107.00
Reduction needs by 1996 to achieve 15 percent net of growth             
 (1996 Projected Emissions plus 1996 Target Level).........       249.98
Contingency measure requirement (3% of Adjusted Base Year               
 Emissions.................................................        31.92
                                                            ------------
      Total emission reductions required...................       281.90
------------------------------------------------------------------------


  Table 2.--Emission Reductions Required by 1996 for the Metro-East St. 
                               Louis Area                               
------------------------------------------------------------------------
                                                              Tons VOC/ 
           Calculation of reduction needs by 1996                day    
------------------------------------------------------------------------
1990 Metro-East Area Total VOC Emissions...................       234.79
1990 ROP Emissions (Anthropogenic only)....................       174.65
1990-1996 Noncreditable Reductions (1990 RVP, Pre-1990                  
 FMVCP, and RACT Fix-Up Reductions)........................        10.75
1990 Adjusted Base Year Emissions (1990 ROP Emissions minus             
 Noncreditable Reductions).................................       165.24
15 Percent of Adjusted Base Year Emissions.................        24.79
Total Required Emission Reductions by 1996 (15 Percent of               
 Adjusted Base Year Emissions plus Noncreditable                        
 Reductions)...............................................        35.54
1996 Target Level (1990 ROP Emissions minus Total Required              
 Emission Reductions by 1996)..............................       139.11
1996 Projected Emissions (1990 Adjusted Base Year Emissions             
 plus Growth Factors)......................................       165.77
Reduction needs by 1996 to achieve 15 percent net of growth             
 (1996 Projected Emissions minus 1996 Target Level)........        26.66
Contingency measure requirement (3% of Adjusted Base Year               
 Emissions.................................................         4.96
                                                            ------------

[[Page 37498]]

                                                                        
      Total emission reductions required...................        31.62
------------------------------------------------------------------------

D. Control Measures

    Tables 3 and 4 below summarize the creditable emission reductions 
from the 15% ROP and 3% contingency plan control measures. These tables 
indicate the emission reduction credit the State has claimed for each 
control measure, and the actual emission reduction credit which EPA 
finds acceptable. Unless otherwise noted, the emission control measures 
apply to both the Chicago and Metro-East St. Louis ozone nonattainment 
areas. Table 5 indicates the date of EPA approval of State adopted 
control measures, date of EPA promulgation of Federal control measures, 
or an identification of the source for taking credit for a control 
measure, where EPA promulgation has not occurred. Following the tables 
is a discussion describing each of the emission control measures 
selected to help achieve ROP and contingency measure plan requirements, 
and EPA's review of the emission reduction claimed for each control 
measure. (Note that the IEPA, in describing the selected emission 
control measures and emission reduction impacts, does not distinguish 
between ROP plan measures and contingency plan measures).
    Emission reductions not needed to achieve 15 percent ROP and 3 
percent contingency requirements in the Chicago and Metro-East St. 
Louis ozone nonattainment areas, respectively, will be applied toward 
achieving the post-1996 ROP requirement, leading to attainment of the 
ozone air quality standard. (Post-1996 ROP plans are required to be 
submitted under section 182(c)(2)(B) of the Act).

   Table 3.--Control Measures for the Chicago Ozone Nonattainment Area  
------------------------------------------------------------------------
                                                    Voc          Voc    
                                                 reduction    reduction 
                Control measure                    state        credit  
                                                  claimed      accepted 
                                                  tons/day     tons/day 
------------------------------------------------------------------------
            Mobile Source Measures                                      
Enhanced Vehicle I/M Program..................        19.60          (1)
Conventional TCMs.............................         2.00         2.00
National Energy Policy Act of 1992............         0.20         0.20
Post-1994 Tier 1 Vehicle Emission Rates.......         2.40         2.40
1995 Reformulated Gasoline....................       112.79       112.79
1992 Vehicle I/M Program Amendments...........         8.40         8.40
Federal Detergent Additive Gasoline...........         2.20         2.20
Federal Non-Road Small Engine Standards.......         4.37         4.37
                                               -------------------------
      Subtotal................................       151.96       132.36
          Industrial Source Measures                                    
RACT Geographic Expansion.....................         3.43         3.43
Expanded RACT--Lowered Source Size Cutoffs (25                          
 Tons Per Year)...............................         2.78         2.78
New Control Technique Guidelines (CTG):.......  ...........  ...........
    Synthetic Organic Chemical Manufacturing                            
     Industry (SOCMI) Batch Processes.........        12.60         3.21
    Industrial Waste Treatment Facilities                               
     (IWTF)...................................         0.14         0.14
    Volatile Organic Liquid (VOL) Storage.....         2.18         2.18
    Plastic Parts Coating.....................         0.28         0.28
    Lithographic Printing.....................         4.06         4.06
    Automobile Refinishing....................        16.30        16.30
Coke Oven National Emission Standard for                                
 Hazardous Air Pollutants (NESHAP)/Maximum                              
 Available Control Technology (MACT)..........         6.93         6.93
SOCMI NESHAP..................................         1.33         1.33
Toxic Substance Disposal Facility (TSDF) RACT                           
 and Resource Conservation Recovery Act (RCRA)                          
 Phase I and II Controls......................         2.08         2.08
Marine Vessel Loading.........................         1.40         1.40
Tightening of RACT Standards and Source Size                            
 Cutoffs......................................        12.05        12.05
Plant Shut-Downs..............................        31.60        31.60
Improved Rule Effectiveness from Clean Air Act                          
 Permit Program (CAAPP).......................        26.30        26.30
                                               -------------------------
      Subtotal................................       123.46       114.07
             Area Source Measures                                       
Stage II Service Station Vapor Recovery.......        23.67        23.67
Architectural and Industrial Maintenance (AIM)                          
 Coating......................................        13.28        10.60
Traffic and Maintenance Coatings..............         3.73         3.73
Underground Gasoline Storage Tank Breathing                             
 Control......................................         4.87         4.87
Consumer and Commercial Products Solvent                                
 Control......................................         8.10         8.10
                                               -------------------------
      Subtotal................................        53.65        50.97
                                               =========================
      Total...................................       329.07      297.40 
------------------------------------------------------------------------
\1\ See below.                                                          


      Table 4.--Control Measures for the Metro-East St. Louis Ozone     
                           Nonattainment Area                           
------------------------------------------------------------------------
                                                    VOC          VOC    
                                                 reduction    reduction 
                Control measure                    credit       credit  
                                                 requested     approved 
                                                   (TPD)        (TPD)   
------------------------------------------------------------------------
            Mobile Source Measures                                      
Enhanced Vehicle I/M Program..................         4.80        (\1\)
Conventional TCMs.............................         0.20         0.20
Post-1994 Tier 1 Vehicle Emission Rates.......         0.19         0.19
7.2/8.2 psi RVP Conventional Gasoline.........         8.55         8.55
1992 Vehicle I/M Program Amendments...........         0.20         0.20
Federal Detergent Additive Gasoline...........         0.20         0.20
Federal Non-Road Small Engine Standards.......         0.42         0.42
                                               -------------------------
      Subtotal................................        14.56         9.76
          Industrial Source Measures                                    
New CTGs or Available CTGs:                                             
    SOCMI Batch Processes.....................         0.36         0.36
    IWTF......................................         0.10         0.10
    Automobile Refinishing....................         1.20         1.20
Coke Oven NESHAP/MACT.........................         0.10         0.10
SOCMI NESHAP..................................         0.26         0.26
TSDF RACT and RCRA Phase I and II Controls....         0.06         0.06
Marine Vessel Loading.........................        11.82        11.82
Tightening of RACT Standards and Source Size                            
 Cutoffs......................................         0.39         0.39
Plant Shut-Downs..............................         1.44         1.44
Improved Rule Effectiveness From CAAPP........         9.50         9.50
Hazardous Air Pollutant (HAP) Standards Early                           
 Reduction Program............................         0.74         0.74
                                               -------------------------
      Subtotal................................        25.97        25.97
                                                                        
             Area Source Measures                                       
                                                                        
AIM Coating...................................         0.94         0.75
Traffic and Maintenance Coating...............         0.62         0.62
Underground Gasoline Storage Tank Breathing                             
 Control......................................         0.44         0.44
Consumer and Commercial Product Solvent                                 
 Reduction....................................         0.58         0.58
                                               -------------------------
      Subtotal................................         2.58         2.39
                                               =========================
      Total...................................        43.11        38.12
------------------------------------------------------------------------


     Table 5.--Federal Approval or Promulgation of Control Measures     
------------------------------------------------------------------------
            Control measure                    Date of EPA approval     
------------------------------------------------------------------------
Chicago Area TCMs......................  September 21, 1995 (60 FR      
                                          4886).                        
Metro-East Area TCMs...................  Date of EPA approval action is 
                                          date of today's Federal       
                                          Register. See discussion      
                                          below.                        
1992 National Energy Policy Act........  Federal Regulation March 14,   
                                          1996 (61 FR 10621).           
Post-1994 Tier 1 Vehicle Emission Rates  Federal Regulation June 5, 1991
                                          (56 FR 25724).                
1995 Reformulated Gasoline.............  Federal Regulation February 16,
                                          1994 (59 FR 7716).            
Metro-East area 7.2 psi RVP              March 23, 1995 (60 FR 5318).   
 Conventional Gasoline Rule.                                            
1992 Vehicle I/M Program Amendments....  April 9, 1996 (61 FR 15715).   
Federal Gasoline Detergent Additive....  Federal Regulation November 1, 
                                          1994 (59 FR 54706).           
Federal Non-Road Small Engine Standards  Federal Regulation August 2,   
                                          1995 (60 FR 34582) See        
                                          ``Guidance on Projection of   
                                          Nonroad Inventories to Future 
                                          Years,'' February 4, 1994, and
                                          ``Future Nonroad Emission     
                                          Reduction Credits for Court-  
                                          Ordered Nonroad Standards,''  
                                          November 28, 1994.            
Chicago Area RACT Geographic Expansion.  September 9, 1994 (59 FR       
                                          46562).                       
Chicago Area Expanded RACT--Lowered      October 21, 1996 (61 FR 54556).
 Size Cutoffs (25 Tons VOC Per Year).                                   
SOCMI Batch Processes..................  April 2, 1996 (61 FR 14484).   
IWTF...................................  Federal Regulation April 22,   
                                          1994 (59 FR 19468).           
VOL Storage Tanks......................  August 8, 1996 (61 FR 41338).  
Plastic Parts Coating..................  October 26, 1995 (60 FR 54807).
Lithographic Printing..................  November 8, 1995 (60 FR 56238).
Automobile Refinishing.................  July 25, 1996 (61 FR 38577).   
Coke Oven NESHAP.......................  Federal Regulation October 27, 
                                          1993 (58 FR 57911).           
SOCMI NESHAP...........................  Federal Regulation April 22,   
                                          1994 (59 FR 19454).           
TSDF RACT (RCRA) Phase I & II..........  Federal Regulation Phase I,    
                                          June 21, 1990 (55 FR 25454)   
                                          Phase II, December 6, 1994 (59
                                          FR 62896) See ``Credit Toward 
                                          the 15 Percent Rate-Of-       
                                          Progress Reductions from      
                                          Federal Measures,'' May 6,    
                                          1993.                         
Marine Vessel Loading Control..........  April 3, 1995 (60 FR 16801).   

[[Page 37500]]

                                                                        
Tightened RACT Coating Standards.......  February 13, 1996 (61 FR 5511).
Tightened RACT SOCMI Air Oxidation.....  September 27, 1995 (60 FR      
                                          49770).                       
Plant Shut-downs.......................  See discussion below.          
Improved Rule Effectiveness from CAAPP.  March 7, 1995 (60 FR 12478).   
HAP Standards Early Reduction Program..  Federal Regulation November 21,
                                          1994 (59 FR 59924).           
Underground Gasoline Storage Tank        March 23, 1995 (60 FR 15233).  
 Breathing Controls.                                                    
Stage II Gasoline Vapor Recovery.......  January 12, 1993 (58 FR 3841). 
AIM Coatings...........................  Creditable toward ROP. See     
                                          ``Update on the Credit for the
                                          15 Percent ROP Plans for      
                                          Reductions from the AIM       
                                          Coatings Rule,'' March 7,     
                                          1996.                         
Traffic and Maintenance Coatings.......  Creditable toward ROP. See     
                                          ``Update on the Credit for the
                                          15 Percent ROP Plans for      
                                          Reductions from the AIM       
                                          Coatings Rule,'' March 7,     
                                          1996.                         
Consumer and Commercial Products         Creditable toward ROP. See     
 Solvent Control.                         ``Regulatory Schedule for     
                                          Consumer and Commercial       
                                          Products under Section 183(e) 
                                          of the Clean Air Act,'' June  
                                          22, 1995.                     
------------------------------------------------------------------------

1. On-Road Mobile Source Sector
    a. Enhanced Vehicle I/M. The Illinois 15 percent ROP plan submittal 
claims emission reduction credit for enhanced vehicle I/M for the 
Chicago and Metro-East St. Louis areas. The State has signed a contract 
for the construction and implementation of enhanced I/M, which provides 
that enhanced I/M testing will begin in January 1999. Based on EPA's 
review of the State's plan submittal, the State has adopted sufficient 
measures, in conjunction with credit from certain Federal measures, to 
achieve 15 percent ROP and 3 percent contingency requirements without 
enhanced I/M. Enhanced I/M will play a significant role in achieving 
post-1996 9% ROP requirements, and ultimately, help bring the Chicago 
and Metro-East St. Louis ozone nonattainment areas into attainment of 
the public health based ozone air quality standards. The amount of 
emission reduction credit which can be taken for enhanced I/M will be 
determined when Illinois submits and EPA takes action on the State's 9% 
ROP plan.
    b. Conventional TCMs. The Metropolitan Planning Organizations (MPO) 
for the Chicago and Metro-East St. Louis areas (Chicago Area 
Transportation Study and East-West Gateway Coordinating Council, 
respectively) are administering a number of TCM projects to both reduce 
vehicle miles traveled (VMT) and the amount of VOC emissions per VMT. 
The projects have been programmed and funded through the areas' 
Transportation Improvement Programs (TIP) under the federal Congestion 
Mitigation and Air Quality Improvement Program (CMAQ).2 
Illinois is claiming emission reductions from the TCMs in its 15 
percent ROP plans for the Chicago and Metro-East areas.
---------------------------------------------------------------------------

    \2\ MPOs can utilize United States Department of Transportation 
(DOT) funds from CMAQ. CMAQ is a federal program which provides 
funding for transportation related projects and programs designed to 
contribute to attainment of air quality standards.
---------------------------------------------------------------------------

    States can take credit for TCMs which are approved as revisions to 
the SIP. EPA's requirements for TCMs are summarized in the June 1993, 
EPA guidance document, Guidance on Preparing Enforceable Regulations 
and Compliance Programs for the 15 Percent Rate-of-Progress Plans. The 
required elements are (1) a complete description of the measure, and, 
if possible, its estimated emissions reduction benefits; (2) evidence 
that the measure was properly adopted by a jurisdiction(s) with legal 
authority to execute the measure; (3) evidence that funding will be 
available to implement the measure; (4) evidence that all necessary 
approvals have been obtained from all appropriate government offices; 
(5) evidence that a complete schedule to plan, implement, and enforce 
the measure has been adopted by the implementing agencies; and (6) a 
description of any monitoring program to evaluate the measure's 
effectiveness and to allow for necessary in-place corrections or 
alterations.
    The Chicago area TCMs were approved on September 21, 1995 (60 FR 
4886). The Metro-East St. Louis area's 15 percent ROP plan includes 
work trip reductions, transit improvements, and traffic flow 
improvements TCMs. These TCMs are being approved in today's action as a 
revision to the SIP because they fully satisfy all the requirements 
based on the following: (1) A complete description of the program and 
estimated emission reduction are provided in documentation included in 
the docket for this rulemaking action; (2) the measure has been adopted 
by the East-West Gateway Coordinating Council, the authorized MPO for 
the St. Louis metropolitan area; (3) the program is currently operating 
and has received federal CMAQ program money for operation; (4) all 
necessary approvals have been obtained from DOT on the FY 1994-1997 TIP 
(which includes the TCMs); (5) the TIP provides the schedule, 
implementation mechanism, and also the enforcement mechanism for the 
TCM (the conformity provisions in 40 CFR part 93 provide that TCMs in 
an approved SIP must be implemented on schedule before a conformity 
determination can be made by DOT); and (6) the CMAQ program requires 
monitoring of programs funded under CMAQ and annual reports to DOT on 
achieved emission reductions.
    The emission reductions claimed in the ROP plans for both the 
Chicago and Metro-East TCMs are adequately documented and acceptable.
    c. National Energy Policy Act of 1992. The National Energy Policy 
Act (EPAct) was enacted in October 1992. EPAct mandates implementation 
(use) of Alternative Fueled Vehicles (AFVs) in federal, State, and 
utility fleets. EPAct requires that 25% of new vehicle purchases by 
federal fleets, 10% of new vehicle purchases by State fleets, and 30% 
of new vehicle purchases by utility fleets must be AFVs beginning in 
1996. IEPA estimated that EPAct would implement approximately 2,000 
AFVs in the Chicago Area by 1996. The EPA mobile source emission factor 
model, MOBILE5a, was used to determine the impacts of EPAct on mobile 
source emissions. The State's emission reduction estimates for this 
federal measure are adequately documented and acceptable.
    d. Post-1994 Tier 1 Emission Rates. Section 202 of the Act sets new 
Tier 1 emission standards for motor vehicles,

[[Page 37501]]

some of which will be implemented prior to the end of 1996. The Tier 1 
standards are approximately twice as stringent as prior (established 
prior to the 1990 Clean Air Act amendments) motor vehicle emission 
standards. For passenger cars and light-duty trucks weighing up to 
6,000 pounds, the implementation of the standards is to be phased-in 
over three years, 40 percent of the manufactured vehicles for model 
year 1994, 80 percent of the manufactured vehicles in model year 1995, 
and 100 percent of the manufactured vehicles in the model year 1996 and 
later. For gasoline and diesel powered light-duty trucks weighing more 
than 6,000 pounds, the Tier 1 standards are to be met in 50 percent of 
the manufactured vehicles in model year 1996 and in 100 percent of the 
manufactured vehicles thereafter.
    The IEPA has determined that the emission reductions resulting from 
these tightened vehicle standards are creditable toward the 15 percent 
ROP plan and used the MOBILE5a emission factor model to calculate the 
VOC emission reductions for this control measure. The State's emission 
reduction estimates are adequately documented and acceptable.
    e. 1992 I/M Program Amendments. As a result of an agreement 
resolving a lawsuit between Wisconsin and EPA, the State of Illinois 
added a tamper check and two-speed idle test to the basic I/M program 
in the Chicago metropolitan area. The I/M program area coverage was 
also increased to encompass almost all of the Chicago metropolitan 
area. These changes in the I/M program were implemented in 1992, and 
were approved by EPA on April 9, 1996 (61 FR 15715). Similar changes in 
the components of the I/M program were implemented in the Metro-East 
St. Louis area, as well.
    The IEPA used the MOBILE5a emission factor model to estimate the 
emission reductions for both areas. The State's emission reduction 
estimates are adequately documented and are acceptable.
    f. Federal Detergent Gasoline Additive. The Federal detergent 
gasoline additive regulation was promulgated November 1, 1994 (59 FR 
54706). This regulation requires, beginning January 1, 1995, that 
gasoline sold nationwide contain additives to prevent accumulation of 
deposits in engines and fuel systems. Preventing such deposits 
maintains the efficiencies of engine systems and reduces VOC emissions 
resulting from engine efficiency degradation.
    The State has reviewed guidance from EPA's Office of Mobile Sources 
which indicates that the use of gasoline containing the required 
additives will reduce vehicle VOC emissions by 0.7 percent in 1996. 
This guidance is the basis for the VOC emission reductions claimed in 
the 15 percent ROP plans for this control measure. The emission 
reduction estimates are acceptable.
    g. Federal Non-Road Small Engine Standards. Federal standards for 
non-road engines (25 horsepower and below) were promulgated on August 
2, 1995 (60 FR 34582). The standards would primarily affect 2 stroke 
and 4 stroke lawn and garden equipment and light commercial, 
construction, and logging equipment. Although full implementation of 
this control measure will not occur until after November 15, 1996, the 
States can take credit for this measure pursuant to EPA policy 
memoranda, ``Guidance on Projection of Nonroad Inventories to Future 
Years,'' February 4, 1994, and ``Future Nonroad Emission Reduction 
Credits for Court-Ordered Nonroad Standards,'' November 28, 1994. Based 
on this policy, the IEPA assumed that the Federal non-road small engine 
standards would reduce 1996 VOC emissions from these sources by 4.5 
percent. The IEPA also assumes that these rules will have a rule 
effectiveness of 100 percent because the rules affect all manufacturers 
of small engines in the nation. The 4.5 percent emission reduction 
claim is assumed to appropriately account for rule penetration (the 
fraction of small engine emissions affected by the rule). The assumed 
emission reduction percentage is acceptable.
    h. Reformulated Gasoline. Beginning January 1, 1995, sellers of 
gasoline in the Chicago ozone nonattainment area were required to sell 
only reformulated gasoline as required under federal regulation 
promulgated February 16, 1994 (59 FR 7716). Using the MOBILE5a emission 
factor model, the IEPA has determined that the use of reformulated 
gasoline will result in a 15 percent reduction in vehicle VOC 
emissions. The IEPA notes that the use of reformulated gasoline will 
also result in lower gasoline marketing and off-road engine emissions 
in the Chicago ozone nonattainment area. The emission reduction 
estimates are adequately documented and acceptable.
    i. 7.2 RVP Gasoline. On October 25, 1994, the IEPA submitted to the 
EPA a SIP revision request for the purpose of lowering the RVP of 
gasoline from 9.0 pounds per square inch (psi) to 7.2 psi in the Metro-
East St. Louis ozone nonattainment area. EPA approved this SIP revision 
on March 23, 1995 (60 FR 15233). The Illinois rule requires the use of 
7.2 psi RVP gasoline in the Metro-East St. Louis area during the period 
of June 1 through September 15 each year beginning in 1995. The rule 
grants a 1 psi waiver for ethanol blended gasolines that have an 
ethanol content between 9 and 10 percent ethanol by volume.
    The IEPA used the MOBILE5a emission factor model to calculate the 
resulting VOC emission reduction for on-highway mobile sources. 
Illinois used a RVP ratio (reduced RVP versus average RVP of gasoline 
sold in 1990) along with 1996 gasoline usage estimates to calculate the 
VOC emission reduction from gasoline marketing sources. The calculation 
of the emission reduction is adequately documented and acceptable.
2. Industrial Sector
    a. RACT Geographic Expansion. The State, on August 13, 1992, 
adopted a rule to expand the coverage of existing RACT regulations to 
include Oswego Township in Kendall County, and Aux Sable and Goose Lake 
Townships in Grundy County. This geographic expansion has affected 
several facilities, which are adequately documented in the ROP plan 
submittal. EPA approved this expansion on September 9, 1994 (59 FR 
46562). The emission reduction estimate is acceptable.
    b. RACT--Reduction in Major Source Threshold. Section 182(d) of the 
Act defines ``major source'' for severe ozone nonattainment areas to 
include any stationary source or group of sources located within a 
contiguous area and under common control that emits, or has the 
potential to emit, at least 25 tons of VOC per year. This establishes a 
maximum source size cutoff for the application of RACT rules (the State 
has adopted RACT rules with much smaller source size cutoffs for most 
applicable source categories) for severe ozone nonattainment areas, 
such as the Chicago area.
    On January 6, 1994, the Illinois Pollution Control Board (IPCB) 
adopted modified source size cutoffs of 25 tons per year, potential to 
emit, for flexographic/rotogravure printing operations, petroleum 
solvent dry cleaners, and non-Control Technology Guideline (non-CTG) 
sources in the Chicago ozone nonattainment area. Other source 
categories regulated in the Chicago area are covered by category-
specific source size applicability cutoffs well below the 25 ton VOC 
per year specified in section 182(d) of the Act. EPA approved this 
regulation on October 21, 1996 (61 FR 54556). The State's emission 
reduction estimates for this rule are adequately documented and 
acceptable.

[[Page 37502]]

    c. Post-1990 CTG Rules. Section 182(b)(2)(A) of the Act requires 
States with moderate and above ozone nonattainment areas to adopt RACT 
rules covering post-1990 CTG source categories. Illinois claimed 
emission reduction credit for many of the State rules adopted to meet 
the section 182(b)(2)(A) requirement. The following briefly discusses 
these rules and claimed emission reduction credit taken by the State:
i. SOCMI Batch Processes
    Illinois' SOCMI batch process rule controls VOC emissions from 
batch chemical processes found in the following industries: plastic 
materials and resin manufacturing; cyclic crudes and intermediates 
manufacturing and processing; industrial organic chemical 
manufacturing; pharmaceuticals manufacturing; gum and wood chemicals 
manufacturing; and agricultural chemicals manufacturing. This rule was 
derived from an EPA draft CTG dated December 29, 1993, and an EPA 
Alternative Control Techniques (ACT) completed in February 1994. The 
rule was approved by EPA on April 2, 1996 (61 FR 14484). The IEPA used 
RACT flow rate equations from the draft CTG for the development of the 
control specifications of SOCMI batch processes. Emissions must be 
controlled using condensers, absorbers, adsorbers, thermal destruction 
systems, flares, thermal incinerators, or catalytic incinerators. In 
determining the applicability of the control requirements of the rule, 
owners or operators must determine the actual average flow rates for 
vent streams. If the actual average vent stream flow rate (standard 
cubic feet per minute) is below the applicability flow rate value 
calculated using the RACT flow rate equations (specific to volatility), 
the VOC from a process vent must be controlled with a reduction 
efficiency of 90 percent (or down to a VOC concentration of no more 
than 20 parts per million volume). Sources are exempted from emission 
controls if the annual VOC emissions are less than 500 pounds for 
individual batch operations or less than 30,000 pounds for a batch 
process train. The owner or operator must keep records of average flow 
rates during testing periods and annual VOC mass emission rates. 
Compliance with this rule is required by March 15, 1996.
    The IEPA has determined there are 15 affected facilities in the 
Chicago ozone nonattainment area and 3 affected facilities in the 
Metro-East St. Louis ozone nonattainment area. The EPA accepts the 
emission reductions claimed for these facilities.
    It should be noted that the State, during discussions with the EPA, 
has raised the point that a significant additional VOC emission 
reduction may be claimed for this source category. In the earlier 
submittals, the State indicated a significant emission reduction of 
9.39 tons per day for an alcohol stripper unit at the Stepan Company's 
Millsdale facility (Chicago ozone nonattainment area) (permit/source 
number 78030038087). The State and EPA are working with the affected 
company to determine the exact timing of the emission reduction. If it 
is ultimately determined that the emission reduction occurred after 
1990, the State will seek the correction of the ROP plan to credit this 
emission reduction in the post-1996 ROP plans.
ii. IWTF
    The State is claiming emission reduction from the NESHAP for this 
source category, 40 CFR part 63, subpart G, promulgated April 22, 1994 
(59 FR 19468). The State's emission reduction estimates for this rule 
are adequately documented and acceptable. It should be noted, however, 
that the IEPA is still expected to develop a State rule for this source 
category to implement RACT. If a RACT level rule is adopted and 
implemented in the near future, the State may claim additional emission 
reduction credits for this source category in the post-1996 ROP plans.
iii. VOL Storage
    On November 30, 1994, the IEPA submitted an adopted rule and 
supporting information for the control of VOC emissions at VOL storage 
operations in the Chicago and Metro-East St. Louis ozone nonattainment 
areas. The EPA approved this rule on August 8, 1996 (61 FR 41339).
    The VOL storage emission control requirements apply to facilities 
storing VOLs with vapor pressures of 0.75 pounds per square inch 
absolute (psia) or greater (facilities storing VOLs with vapor 
pressures equal to or exceeding 0.5 psia must keep records of VOLs 
stored including VOL vapor pressures) in any storage tank of 40,000 
gallons capacity or greater. The rule does not apply to vessels storing 
petroleum liquids, which are covered under other rules.
    For fixed roof tanks, the VOL storage rule requires the 
installation of internal floating roofs with foam or liquid-filled 
seals and secondary seals to close the gap between the tank's inner 
wall and the floating roof. These controls must be implemented by March 
15, 1996.
    External floating roof tanks must be equipped with primary and 
secondary seals before March 15, 2004, or at the time of the next tank 
cleaning, whichever comes first.
    For internal floating roof tanks, the internal floating roofs must 
be equipped with primary and secondary seals before March 15, 2004, or 
at the time of the next tank cleaning, whichever comes first.
    Sources may also use closed vent systems and emission control 
devices provided the emission control systems are operated with no 
detectable emissions or monitored VOC concentrations above 500 parts 
per million above background levels. Control devices must be operated 
to reduce VOC emissions by at least 95 percent. Storage vessels of 
40,000 gallons or greater storage capacity that store VOLs with a 
maximum true vapor pressure equal to or greater than 11.1 psia must be 
equipped with a closed vent system and emission control device with 
emission control efficiency equal to or greater than 95 percent.
    Recognizing that only fixed roof tanks would be required to 
implement emission controls by the end of 1996, the IEPA claimed 
emission reductions for only these types of tanks. The emission 
reduction estimates are adequately documented and acceptable.
iv. Plastic Parts Coating
    On May 5, 1995, the IEPA submitted an adopted rule for the control 
of VOC emissions from automotive/transportation and business machine 
plastic parts coating operations in the Chicago and Metro-East St. 
Louis ozone nonattainment areas (no applicable sources exist in the 
Metro-East St. Louis area). The EPA approved this rule on October 25, 
1995 (60 FR 54807).
    The rule specifies the VOC content limits for various types of 
coating distinguishing between coating of automotive/transportation 
plastic parts and business machine plastic parts (see 60 FR 54808). 
Sources may also choose to use add-on control devices which achieve 
equivalent emission reductions. Compliance with this rule must be met 
by March 15, 1996. The emission reductions claimed for this source 
category are adequately documented and acceptable.
v. Lithographic Printing
    Using EPA's September, 1993 draft CTG for this source category, the 
IEPA developed a regulation establishing VOC content limits, emission 
control requirements, and required work practices for this source 
category. The State's rule includes limitations on the VOC content of 
fountain solutions and cleaning solutions. The rule also

[[Page 37503]]

provides for the use of afterburners and other emission control devices 
for heat set web offset lithographic printing operations. The rule 
establishes recordkeeping, testing, and reporting requirements as well 
as work-practice requirements, such as a requirement for the storage of 
cleaning materials and spent cleaning solutions in air-tight 
containers.
    The rule is applicable to all lithographic printing lines at a 
facility if the VOC emissions, in total, from the lithographic printing 
lines exceed 45.5 kilograms per day or 100 pounds per day. The rule 
also applies to facilities with heat set web offset printing lines if 
the maximum theoretical emissions of VOC, in total, ever exceed 90.7 
megagrams per year or 100 tons per year. Compliance with the rule is 
required by March 15, 1996. The EPA approved this rule on November 8, 
1995 (60 FR 56238).
    The IEPA has determined that 113 facilities in the Chicago ozone 
nonattainment area will be affected by the rule, with 49 facilities 
likely to require new emission controls. Only one facility in the 
Metro-East St. Louis area is expected be affected by the rule, with no 
anticipated reduction in VOC emissions. Emission reduction credits for 
the Chicago facilities were calculated using the emission reduction 
factors for add-on controls, fountain solution reformulation or process 
modification, and cleaning solution reformulation provided for model 
plants in the September 1993 draft CTG. The emissions reduction credit 
claimed is adequately documented and acceptable.
vi. Automobile Refinishing
    The EPA, on the behalf of the IEPA, contracted with Midwest 
Research Institute (MRI) to conduct a study of the motor vehicle 
refinishing industry in the Chicago and Metro-East St. Louis ozone 
nonattainment areas. This study included an estimate of the 1990 base 
year emissions and the study report recommended emission control 
strategies and possible resultant emission reductions. The study 
concluded that approximately 1,463 refinishing shops are located in the 
Chicago ozone nonattainment area, and 107 are located in the Metro-East 
St. Louis ozone nonattainment area.
    Based on the study, review of similar regulations developed by the 
California Air Resources Board, and discussions with local automobile 
refinishing representatives, the IEPA adopted the following coating VOC 
content limits (pounds VOC per gallon of coating, minus water and 
exempt compounds):

Pretreatment Wash Primer............................................6.5
Precoat.............................................................5.5
Primer/Primer Surfacer Coating......................................4.8
Primer Sealer.......................................................4.6
Topcoat System......................................................5.0
Basecoat/Clearcoat..................................................5.0
Three or Four Stage Topcoat
  System............................................................5.2
Specialty Coatings..................................................7.0
Anti-Glare/Safety Coating...........................................7.0

    In addition to these VOC content limits, the regulation also 
establishes VOC content limits for surface preparation/cleaning 
products (6.5 pounds VOC per gallon of plastic parts cleaning compounds 
and 1.4 pounds of VOC per gallon of other surface cleaning/preparation 
products). The rule also requires the use of gun cleaners designed to 
minimize solvent evaporation during the cleaning, rinsing, and draining 
operations with recirculation of solvent during the cleaning operation 
and collection of spent solvent. Spent and fresh solvent must be stored 
in closed containers. Coating application must be done using High 
Volume, Low Pressure guns or electrostatic application systems. As an 
alternative to the VOC content limits, a facility may use add-on 
control systems, such as incinerators or carbon adsorbers, which would 
reduce VOC emissions by at least 90 percent. Facilities that use less 
than 20 gallons of coatings per year total are exempted from the 
coating application and gun cleaner equipment requirements.
    Refinishing facilities are required to keep monthly records of 
coating purchases and the VOC contents of these coatings. Facilities 
are also required to use coatings in accordance with the coating 
manufacturer's specifications. Compliance with the rule must be met by 
March 15, 1996. The EPA approved the rule on July 25, 1996 (61 FR 
38577). The emission reduction estimates for this rule are adequately 
documented and acceptable.
    d. Coke Oven NESHAP. The coke oven NESHAP, 40 CFR part 63, subpart 
L, promulgated on October 27, 1993 (58 FR 57911), control emissions 
from coke oven doors, off-takes, lids, and charging. The emission 
control requirements of the rule must be met by the end of 1995. The 
emission reduction estimates are adequately documented and acceptable.
    e. Hazardous Organic NESHAP--SOCMI. The SOCMI NESHAP, 40 CFR part 
63, subpart F, promulgated April 22, 1994, (59 FR 19454) affects 
processes which produce one or more of the 396 designated SOCMI 
chemicals using one or more designated HAPs as a reactant or producing 
HAPs as a byproduct or co-product. Under EPA policy memorandum, 
``Credit Toward the 15 Percent Rate-Of-Progress Reductions from Federal 
Measures,'' May 6, 1993, 5 percent emission reduction from 1990 base 
line levels can be claimed from this rule. The State's emission 
reduction estimates are acceptable.
    f. TSDF RACT (RCRA) Phase I and II. Under RCRA, EPA is taking 
action to control VOC emissions in three phases. Phase I regulations 
were promulgated by the EPA in June 1990 and became effective in 
December 1990. Phase II regulations were promulgated on December 6, 
1994. The effective date for the Phase II regulations were suspended 
until December 6, 1996 (See 61 FR 59932, November 25, 1996). The Phase 
II compliance date is December 8, 1997. Although final compliance with 
the Phase II regulation will occur after November 15, 1996, States can 
take emission reduction credit for Phase II TSDF regulations toward the 
15 percent ROP plan pursuant to EPA policy memorandum, ``Credit Toward 
the 15 Percent Rate-Of-Progress Reductions from Federal Measures,'' May 
6, 1993. Illinois' emission reduction estimates for these federal rules 
are acceptable.
    g. Marine Vessel Loading Controls. The State's rule requires a 95 
percent reduction in VOC emissions resulting from the loading of 
gasoline and crude oil into marine vessels at all marine terminals in 
the Chicago and Metro-East St. Louis ozone nonattainment areas which 
load gasoline or crude oil into tank ships and barges. The rule applies 
between May 1 and September 30 each year beginning in 1996, and 
requires that vessel cargo compartments be closed to the atmosphere 
during loading using: (1) Devices to protect tanks from 
underpressurization and overpressurization; (2) level-monitoring and 
alarm systems designed to prevent overfilling; and (3) devices for 
cargo gauging and sampling. VOC capture must be achieved with either 
(1) a vacuum-assisted vapor collection system, or (2) certification of 
vessel vapor-tightness. Piping used in the transfer of gasoline or 
crude oil must be maintained and operated to prevent visible liquid 
leaks, significant odors, and visible fumes. Owners and operators must 
use leak inspection procedures similar to those used at petroleum 
refineries.
    Based on IEPA's records, there are five affected facilities in the 
Chicago ozone nonattainment area and six affected facilities in the 
Metro-East St. Louis ozone nonattainment area. To calculate VOC 
emission reduction for this source category, the IEPA assumed that 
vapor recovery and emissions control systems can reduce VOC

[[Page 37504]]

emissions by 90 percent. The rule was adopted on October 20, 1994, and 
was approved by the EPA on April 3, 1995 (60 FR 16801). The emission 
reduction credits claimed are adequately documented and acceptable.
    h. Tightening of RACT Standards and Cutoffs. Based on an April 
1993, Science Applications International Corporation (SAIC) report 
titled, ``Technical Document for Reasonably Available Control 
Technology for Illinois to Assist in Achieving 15 Percent Reduction in 
Ozone Nonattainment Areas,'' the IEPA determined that the VOC content 
limits for coatings could be lowered for the following source 
categories:
    a. Automobile/Truck Coating
    b. Paper Coating
    c. Fabric Coating
    d. Metal Furniture Coating
    e. Flexographic/Rotogravure Printing
    f. Miscellaneous Surface Coating
    g. Can Coating
    h. Metal Coil Coating
    I. Vinyl Coating
    j. Miscellaneous Metal Coating
    k. Large Appliance Coating.
    After further consideration, the IEPA determined that no additional 
tightening of existing coating VOC content limits could be justified at 
this time for automobile/truck coating and flexographic/rotogravure 
printing.
    The State's tightened RACT coating limits are similar to those used 
in the South Coast Air Quality Management District of California. The 
tightened limits were adopted by the Illinois Pollution Control Board 
on April 20, 1995, and were approved by EPA on February 13, 1996 (61 FR 
5511). The tightened SOCMI air oxidation requirements were adopted on 
October 20, 1994, and were approved by EPA on September 27, 1995 (60 FR 
49770). The 15 percent ROP documentation indicates that by November 15, 
1996, an estimated 8.00 tons VOC/day emission reduction has occurred 
from sources covered under the tightened RACT coating limit rule, and 
4.05 tons VOC/day emission reduction has occurred from sources covered 
under the tightened SOCMI air oxidation rule. The emission reductions 
claimed are acceptable.
    i. Plant Shut-downs. Facilities or plant units which have been 
shut-down since 1990 were identified through: (1) Facility responses to 
permit renewals; (2) responses to Annual Emission Report (AER) 
requests; (3) direct field inspections; and (4) requests from the 
facilities themselves to have their source permits withdrawn due to 
shut-down. Facility closings and emission reductions were verified 
through review of Emission Inventory System (EIS) records, permit file 
data, and field reports.
    To further support the estimated emission reductions, the IEPA has 
provided the EPA with a list of closed facilities. The IEPA maintains a 
plant shut-down file which documents the methods of verification.
    The shut-down credits were calculated using 1990 emissions 
projected to 1996 using the Emissions Growth Assessment System (EGAS) 
growth factors for specific source units. The projected 1996 emissions 
were used because these emissions had already been built into the 
projected 1996 emissions used to calculate the emission targets under 
the ROP plans.
    Emission reductions from the plant shut-downs are made permanent 
through the closing of source permits and, therefore, are acceptable. 
The source permits for these facilities will not be reissued by the 
IEPA. If these sources wish to restart, they will have to go through 
new source review and will be controlled through new source emission 
control requirements.
    j. Improved Rule Effectiveness. Illinois' Title V program, the 
CAAPP, covers most source facilities in the two ozone nonattainment 
areas. The IEPA submitted the CAAPP to the EPA in November 1993, and 
the EPA gave the program interim approval on March 7, 1995 (60 FR 
12478). The program became effective in 1996.
    A primary emphasis of the CAAPP is rigorous recordkeeping, 
reporting, and monitoring. The CAAPP regulations include recordkeeping, 
reporting, and monitoring requirements not covered under existing 
regulations or emphasizes existing regulations for such requirements. 
Sources must submit progress reports to the IEPA at a minimum of every 
6 months and the permittees must certify no less frequently than 
annually that the facilities are in compliance with the permit 
requirements. Source owners or operators must also promptly report any 
deviances from permit conditions to the IEPA. The CAAPP requirements 
contain significant civil and criminal penalties for source owners or 
operators failing to comply with the permit requirements, including the 
recordkeeping, reporting, and monitoring requirements.
    The IEPA used EPA's rule effectiveness evaluation questionnaire, 
and, based on the requirements of the CAAPP regulations, determined 
that the CAAPP requirements should lead to a rule effectiveness of 95 
percent for all source facilities covered by the CAAPP. The IEPA 
determined the VOC emission reduction credit for this rule 
effectiveness improvement by considering the ``current'' rule 
effectiveness for each facility or source category used to develop the 
1990 base year emissions inventory (80 percent for most facilities, 
with some facilities starting at 92 percent based on prior study 
results). The IEPA documented the rule effectiveness improvement 
findings in a report titled ``Impact of CAAPP on Inventory RE.''
    In comments on a draft version of the ROP plan, the EPA indicated 
to the IEPA that recent changes in Title V requirements and guidelines 
to allow more source flexibility could jeopardize the anticipated 
improvement in rule effectiveness, particularly since some of the 
changes in EPA policy could relax compliance monitoring (the increased 
flexibility would allow sources to switch from enhanced monitoring 
procedures to less stringent compliance assurance monitoring 
procedures). The IEPA, however, views this increased source flexibility 
as having minimal impact on the rule effectiveness to be obtained from 
the CAAPP. It is pointed out that the EPA engineers who are technically 
supporting the compliance assurance monitoring procedures in EPA's 
revised Title V policy agree with a rule effectiveness estimate of 95 
percent. The EPA agrees with this view and accepts the estimated 
emission reduction claimed.
    k. HAP Early Reduction Program. This program, promulgated on 
November 21, 1994 (59 FR 59924), allows an existing source subject to 
an applicable section 112(d) standard to be granted a 6-year compliance 
extension upon commitment by the owner or operator of the source that 
the source has achieved a reduction of 90 percent or more of HAP by 
1994. Emission reductions are determined by comparing the post-control 
emissions with verifiable and actual emissions in a base year not 
earlier than 1987, except that 1985 or 1986 may be used as a base year 
if the emissions data are based on information received before November 
15, 1990. In the Metro-East St. Louis nonattainment area, only one 
applicable facility has committed to the early reduction program. Under 
the program, such commitments are federally enforceable. The reduction 
in VOC from this facility due to the program, therefore, is creditable.
3. Area Sources
    a. Stage II Vapor Recovery. On August 13, 1992, Illinois adopted 
Stage II vapor recovery rules, which require the return of gasoline 
vapors to underground storage tanks during automobile refueling. Full 
phase-in of the

[[Page 37505]]

requirements occurred on November 1, 1994. EPA approved these rules on 
January 12, 1993 (58 FR 3841).
    The IEPA has monitored the effectiveness of the Stage II 
regulations and the status of service station compliance. The Stage II 
controls have been established at most service stations in the Chicago 
nonattainment area and have been certified to reduce VOC emissions by 
at least 95 percent. The emission reduction estimates derived from this 
observation are acceptable.
    b. Architectural Surface Coating. EPA is in the process of adopting 
a national rule applicable to manufacturers of AIM coatings. EPA 
proposed this rule on June 25, 1996 (61 FR 32729). Based on EPA policy 
memoranda, the State has assumed that an emission reduction credit of 
20 percent could be taken for this source category. Even though the 
final rule has not been promulgated, and the compliance with the rule 
is not expected until 1998, the EPA is allowing States to take credit 
for 20 percent emission reduction credit for this source category, 
relative to 1990 emission levels. See ``Credit for the 15 Percent Rate-
Of-Progress Plans for Reductions from the AIM Coating Rule,'' March 22, 
1995, and ``Update on the Credit for the 15 Percent Rate-Of-Progress 
Plans for Reductions from the Architectural and Industrial Maintenance 
Coatings Rule,'' March 7, 1996. The State has calculated emission 
reductions for architectural coatings separate from the traffic marking 
and maintenance coating provisions of the AIM rule. The State's 
emission reduction estimates for architectural coatings are acceptable.
    c. Traffic Marking and Maintenance Coating. The State has chosen to 
rely on the Federal AIM rule (now expected to be implemented in 1998) 
for emission reductions in this source category. Although EPA policy 
memoranda,''Credit for the 15 Percent Rate-Of-Progress Plans for 
Reductions from the Architectural and Industrial Maintenance Coating 
Rule,'' March 22, 1995, and ``Update on the Credit for the 15 Percent 
Rate-Of-Progress Plans for Reductions from the Architectural and 
Industrial Maintenance Coatings Rule,'' March 7, 1996, indicated that 
the State can assume a 20 percent emission reduction for this source 
category, the State notes that a more appropriate method for 
determining the emission reduction for traffic marking and maintenance 
coatings would involve consideration of the VOC content limit (150 
grams VOC/liter coating) proposed in EPA's draft AIM rule. Data 
supplied by the Illinois Department of Transportation indicates that 
the median VOC content in traffic/maintenance coatings in the State of 
Illinois in 1990 was 413 grams/liter coating (this median VOC content 
level is assumed to apply to both ozone nonattainment areas in the 
State). Comparing the proposed limit to this median VOC content level 
indicates that a 63.7 percent reduction in VOC emissions would occur if 
the proposed VOC content limit were attained. This leads to VOC 
reduction estimates of 3.73 TPD for the Chicago area and 0.62 TPD for 
the Metro-East St. Louis area. These estimates are acceptable.
    d. Underground Gasoline Storage Tank Breathing Controls. The State 
rule, adopted by the State on September 15, 1994, requires the 
installation of Pressure/Vacuum relief-control valves (P/V valves) on 
gasoline storage tank vents by March 15, 1995. The P/V valves must 
remain closed against tank pressures of at least 3.5 inches water 
column and tank vacuums of at least 6 inches water column. Gasoline 
storage tank owners must maintain records of malfunctions and repairs 
and must register installation of the P/V valves with the IEPA prior to 
March 15, 1995. The P/V valves must be tested annually and the owners 
must keep records of the tests. EPA approved this rule on March 23, 
1995 (60 FR 15233).
    The IEPA estimates that this rule will reduce gasoline breathing 
emissions by 90 percent. This emission reduction estimate is acceptable 
as are the emission reduction credits claimed for the Chicago and 
Metro-East St. Louis areas.
    e. Consumer and Commercial Solvents. The March 23, 1995 Federal 
Register contained EPA's list of affected product categories and 
schedule for regulation of consumer and commercial solvent contents as 
required by section 183(e) of the Act. The EPA intends to regulate the 
solvent contents in 24 product categories. The Federal Register action 
states that the EPA expects the regulation to achieve a 25 percent 
reduction in VOC emissions from the regulated product categories. This 
regulation was scheduled to be promulgated in 1996. Under EPA policy 
memorandum ``Regulatory Schedule for Consumer and Commercial Products 
under Section 183(e) of the Clean Air Act,'' June 22, 1995, EPA will 
grant an emission reduction credit for this source category even though 
emission reductions are not expected to occur until after 1996.
    The IEPA cites an EPA study which states that the best estimate of 
VOC emissions for consumer and commercial products is 8.03 pounds per 
person per year. The study further states that the Federal regulation 
of consumer and commercial product solvents is expected to reduce these 
emissions by 1 pound per person per year. Using the 1996 projected 
populations and the ratio of 6.3 pounds VOC per person per year used 
for this source category in the 1990 base year emissions inventory to 
the 8.03 pounds per person per year specified in the EPA study, the 
IEPA has determined that the Federal rule gives an 8.10 tons VOC per 
day reduction in the Chicago ozone nonattainment area and a 0.58 tons 
VOC per day reduction in the Metro-East St. Louis ozone nonattainment 
area. The emission reduction credits are acceptable.

III. EPA Rulemaking Action

    The EPA is approving, through direct final rulemaking action, 
Illinois' 15 percent ROP and 3 percent contingency plan SIP revisions 
for the Chicago and Metro-East St. Louis ozone nonattainment areas, and 
the Metro-East St. Louis TCM work trip reductions; transit 
improvements; and traffic flow improvements.
    The EPA is publishing this action without prior proposal because 
EPA views this as a noncontroversial revision and anticipates no 
adverse written comments. However, in a separate document in this 
Federal Register publication, the EPA is proposing to approve the SIP 
revision should adverse or critical written comments be filed. This 
action will be effective on September 12, 1997 unless, by August 13, 
1997, adverse or critical written comments on the approval are 
received.
    If the EPA receives adverse written comments, the approval will be 
withdrawn before the effective date by publishing a subsequent 
rulemaking that will withdraw the final action. All public written 
comments received will be addressed in a subsequent final rule based on 
this action serving as a proposed rule. The EPA will not institute a 
second comment period on this action. Any parties interested in 
commenting on this action should do so at this time. If the effective 
date is delayed, timely notice will be published in the Federal 
Register.
    Nothing in this action should be construed as permitting, allowing 
or establishing a precedent for any future request for revision to any 
SIP. Each request for revision to the SIP shall be considered 
separately in light of specific technical, economic, and environmental 
factors and in relation to relevant statutory and regulatory 
requirements.

[[Page 37506]]

IV. Administrative Requirements

A. Executive Order 12866

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

B. Regulatory Flexibility

    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. sections 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.
    SIP approvals under section 110 and subchapter I, part D of the Act 
do not create any new requirements, but simply approve requirements 
that the State is already imposing. Therefore, because the Federal SIP 
approval does not impose any new requirements, the Administrator 
certifies that it does not have a significant impact on any small 
entities affected. Moreover, due to the nature of the Federal-State 
relationship under the Act, preparation of a flexibility analysis would 
constitute Federal inquiry into the economic reasonableness of the 
State action. The Clean Air Act forbids EPA to base its actions 
concerning SIPs on such grounds. Union Electric Co. v. EPA., 427 U.S. 
246, 256-66 (1976); 42 U.S.C. 7410(a)(2).

C. Unfunded Mandates

    Under Section 202 of the Unfunded Mandates Reform Act of 1995, 
signed into law on March 22, 1995, EPA must undertake various actions 
in association with 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 the private sector, of $100 million 
or more. This Federal action approves pre-existing requirements under 
state or local law, and imposes no new requirements. Accordingly, no 
additional costs to state, local, or tribal governments, or 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 Act, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by September 12, 1997. Filing a petition for 
reconsideration by the 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 52

    Environmental protection, Air pollution control, Hydrocarbons, 
Intergovernmental relations, Ozone.

    Dated: July 2, 1997.
Jerri-Anne Garl,
Acting Regional Administrator.
    For the reasons stated in the preamble, part 52, chapter I, title 
40 of the Code of Federal Regulations is amended as follows:

PART 52--[AMENDED]

    1. The authority citation for part 52 continues to read as follows:

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

Subpart O--Illinois

    2. Section 52.726 is amended by adding paragraphs (p), (q) and (r) 
to read as follows:


Sec. 52.726  Control strategy: Ozone.

* * * * *
    (p) On November 15, 1993, Illinois submitted 15 percent rate-of-
progress and 3 percent contingency plans for the Chicago ozone 
nonattainment area as a requested revision to the Illinois State 
Implementation Plan. These plans satisfy sections 182(b)(1), 172(c)(9), 
and 182(c)(9) of the Clean Air Act, as amended in 1990.
    (q) Approval--On November 15, 1993, Illinois submitted 15 percent 
rate-of-progress and 3 percent contingency plans for the Metro-East St. 
Louis ozone nonattainment area as a requested revision to the Illinois 
State Implementation Plan. These plans satisfy sections 182(b)(1) and 
172(c)(9) of the Clean Air Act, as amended in 1990.
    (r) Approval--On November 15, 1993, Illinois submitted the 
following transportation control measures as part of the 15 percent 
rate-of-progress and 3 percent contingency plans for the Metro-East 
ozone nonattainment area: work trip reductions; transit improvements; 
and traffic flow improvements.

[FR Doc. 97-18403 Filed 7-11-97; 8:45 am]
BILLING CODE 6560-50-P