[Federal Register Volume 62, Number 193 (Monday, October 6, 1997)]
[Rules and Regulations]
[Pages 52016-52029]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 97-26434]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[FRL-5901-7]


Approval and Promulgation of Air Quality Implementation Plans; 
Connecticut; Reasonably Available Control Technology for Nitrogen 
Oxides

AGENCY: Environmental Protection Agency (EPA).

ACTION: Direct final rule.

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SUMMARY: EPA is approving a State Implementation Plan (SIP) revision 
submitted by the State of Connecticut. This revision establishes and 
requires Reasonably Available Control Technology (RACT) at stationary 
sources of nitrogen oxides (NOX). The intended effect of 
this action is to approve regulatory provisions and source specific 
orders which require major stationary sources of NOX to 
reduce their emissions statewide in accordance with requirements of the 
Clean Air Act.

DATES: This action is effective December 5, 1997, unless adverse or 
critical comments are received by November 5, 1997. If the effective 
date is delayed, timely notice will be published in the Federal 
Register.

ADDRESSES: Comments may be mailed to Susan Studlien, Deputy Director, 
Office of Ecosystem Protection (mail code CAA), U.S. Environmental 
Protection Agency, Region I, JFK Federal Building, Boston, MA 02203-
2211. Copies of the documents relevant to this action are available for 
public inspection during normal business hours, by appointment, at the 
Office Ecosystem Protection, U.S. Environmental Protection Agency, 
Region I, One Congress Street, 11th floor, Boston, MA; as well as the 
Bureau of Air Management, Department of Environmental Protection, State 
Office Building, 79 Elm Street, Hartford, CT 06106-1630.

FOR FURTHER INFORMATION CONTACT: Steven A. Rapp, Environmental 
Engineer, Air Quality Planning Unit (CAQ), U.S. EPA, Region I, JFK 
Federal Building, Boston, MA 02203-2211; (617) 565-2773; 
[email protected].

SUPPLEMENTARY INFORMATION:

I. Background

    The Clean Air Act (CAA) requires that States develop Reasonably 
Available Control Technology (RACT) regulations for all major 
stationary sources of nitrogen oxides (NOX) in areas which 
have been classified as ``moderate,'' ``serious,'' ``severe,'' and 
``extreme'' ozone nonattainment areas, and in all areas of the Ozone 
Transport Region (OTR). EPA has defined RACT as the lowest emission 
limitation that a particular source is capable of meeting by the 
application of control technology that is reasonably available 
considering technological and economic feasibility (44 FR 53762; 
September 17, 1979). This requirement is established by sections 
182(b)(2), 182(f), and 184(b) of the CAA.
    Major sources in moderate areas are subject to section 182(b)(2), 
which requires States to adopt RACT for all major sources of VOC. This 
requirement also applies to all major sources in areas with higher 
classifications. Additionally, section 182(f) of the CAA states that 
``The plan provisions required under this subpart for major stationary 
sources of volatile organic compounds shall also apply to major 
stationary sources (as defined in section 302 and subsections (c), (d), 
and (e) of the section) of oxides of nitrogen.'' For serious 
nonattainment areas, a major source is defined by section 182(c) as a 
source that has the potential to emit 50 tons per year. For severe 
nonattainment areas, a major source is defined by section 182(d) as a 
source that has the potential to emit 25 tons per year. The entire 
State of Connecticut is classified as nonattainment for ozone, with the 
Connecticut portion of the New York-New Jersey-Long Island CMSA being 
classified as severe, and with the rest of the State being classified 
as serious.
    These CAA NOX requirements are further described by EPA 
in a notice entitled, ``State Implementation Plans; Nitrogen Oxides 
Supplement to the General Preamble; Clean Air Act Amendments of 1990 
Implementation of Title I; Proposed Rule,'' published November 25, 1992 
(57 FR 55620). The November 25, 1992 notice, also known as the 
``NOX Supplement,'' should be

[[Page 52017]]

referred to for more detailed information on NOX 
requirements. Additional EPA guidance memoranda, such as those included 
in the ``NOX Policy Document for the Clean Air Act of 
1990,'' (EPA-452/R-96-005, March 1996), should also be referred to for 
more information on NOX requirements. Similarly, the 
``Economic Incentive Program Rules,'' or EIP, (67 FR 16690, April 7, 
1997) should be referred to for information on EPA's policy concerning 
the use of emissions trading by sources subject to NOX RACT.
    On May 20, 1997, the Connecticut Department of Environmental 
Protection (DEP) submitted revisions to its SIP. The revisions included 
a revised section 22a-174-22 of the Regulations of Connecticut State 
Agencies, ``Control of Nitrogen Oxides Emissions.'' The Connecticut 
NOX RACT regulation contains a combination of NOX 
emission limitations, performance standards, and compliance options, 
including provisions for sources to meet emission limitations through 
emissions trading. Subsequently, Connecticut submitted a number of 
case-specific SIP revisions related to the emissions trading provisions 
of section 22a-174-22. These regulations and case-specific SIP 
revisions were submitted in response to the CAA requirements that 
Connecticut require RACT for all major sources of NOX.

II. State Submittal

    Connecticut's regulation 22a-174-22, ``Control of Nitrogen Oxides 
Emissions,'' was first incorporated into the SIP on May 31, 1972 (37 FR 
23085). On February 1, 1994, Connecticut sent a revised draft of the 
rule to EPA. The regulations were filed with the Secretary of State on 
May 20, 1994, and became effective on that date. Connecticut submitted 
the revised section 22a-174-22 as a formal SIP submittal to EPA on May 
24, 1994. After reviewing the regulation for completeness, EPA sent 
Connecticut a June 23, 1994 letter stating that Connecticut's rule had 
been found to be administratively and technically complete. 
Subsequently, on September 19, 1996, Connecticut proposed another 
revision to section 22a-174-22. Connecticut held a public hearing on 
that revision on October 30, 1996 and EPA submitted written comments to 
the public record on October 23, 1996. The revised section 22a-174-22 
was adopted by Connecticut on January 23, 1997. On May 20, 1997, 
Connecticut submitted the regulations to EPA as a request for a 
revision to the SIP. On May 28, 1997, EPA sent a letter to Connecticut 
deeming the package administratively and technically complete.
    In addition to the submittal of section 22a-174-22, since May 1995, 
Connecticut has submitted 23 case-specific SIP revisions for sources 
involved in the trading of NOX credits as allowed under 
subsection 22a-174-22(j). Of the 23 case-specific packages, four 
involve the generation of NOX credits and 19 involve the use 
of NOX credits in order to meet NOX emission 
reduction requirements of section 22a-174-22.

III. Description of Submittal

    The following description concerns the changes being approved in 
this action. For a more detailed discussion of Connecticut's submittal 
and EPA's proposed action, the reader should refer to the Technical 
Support Document (TSD) and attachments which were developed as part of 
this action. Copies of the TSD and attachments are found at the 
previously mentioned addresses.

A. Section 22a-174-22

    Connecticut's regulation, section 22a-174-22, ``Control of Nitrogen 
Oxides Emissions,'' is divided into thirteen sections. Subsection (a) 
defines terms used in the rule. Subsections (b) and (c) cover 
applicability and exemptions. Applicability is determined unit-by-unit, 
based on unit type. An emissions unit is subject to the rule if it 
exceeds a minimum capacity rating and is located at a major source. 
Additionally, any fuel-burning equipment, whether located at a major 
stationary source or not, which has daily potential emissions of 
NOX in excess of certain thresholds during the ozone season, 
is also subject to the rule. The regulations exempt sources where 
actual emissions have not exceeded the major source threshold since 
1990 and emergency electricity generating engines. Subsection (c) 
states that this subsection does not apply to mobile sources.
    Subsections (d) and (e) establish the emission limits to apply 
before and after May 31, 1995. Subsection (d) established the emission 
limits for sources prior to May 31, 1995. Subsection (d) also lists 
compliance options available to sources after May 31, 1995. These 
options are compliance with emission limitations, fuel switching, a 40% 
emission reduction, source reconstruction, schedule modification, or 
emission reduction trading. Requirements for each method of compliance 
are detailed in subsections (f) through (j). Subsection (d) also 
provides for one year compliance date extensions subject to the 
approval of the Commissioner and EPA.\1\ Subsection (e) establishes the 
post-May, 1995 emission limits with specific limits for: turbines; 
cyclone furnaces; fast-response double-furnace Naval boilers; 
fluidized-bed combustors; ``other boilers;'' reciprocating engines; 
waste combustors; fuel burning equipment firing fuels other than gas, 
oil, or coal; glass melting furnace; and other sources providing direct 
heat. Subsection (e) also contains an emission limit for all other 
sources not having a specifically defined emission limitation.
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    \1\ See EPA's July 5, 1994 policy memorandum entitled, ``Phase-
in of Controls Beyond May 1995,'' from John Seitz, Director of the 
Office of Air Quality Planning and Standards to the regional EPA Air 
Program Directors.
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    Subsection (f) establishes the requirements for multi-fuel sources 
which co-fire, fuel switch, or completely convert to a different fuel. 
Sources simultaneously firing more than one fuel are subject to the 
Btu-weighted average of the applicable emission limits. Sources capable 
of firing more than one fuel are subject to applicable emission limits 
for each fuel at the time it is fired, however, if gas or distillate 
oil is fired exclusively May through September, the source is subject 
to a limit of 0.20 lb/mmBtu in May through September and a limit of 
0.29 lb/mmBtu October through April. If a source converts to a new 
fuel, the source is subject to 0.29 lb/mmBtu if the primary fuel was 
previously coal, or 0.225 lb/mmBtu if the primary fuel was previously 
residual oil.
    Subsection (g) establishes the requirements for sources making a 
40% emission reduction to comply. The 40% reduction is calculated as 
the more stringent of a) 60% of the source's emission rate at maximum 
capacity during 1990 or b) 60% of the applicable pre-May 1995 emission 
limit established in subsection (d). Subsection (h) establishes the 
compliance requirements for sources reconstructing or replacing a unit. 
Pursuant to a permit, these sources must complete reconstruction by May 
31, 1999. Prior to May, 1999, the source's emissions are limited to the 
more stringent of the pre-May 1995 emission limit the source would be 
subject to under subsection (d) or the emission limit in the source's 
current permit. In the interim period between May 31, 1995 and May 31, 
1999, the source must deposit money into an escrow account equivalent 
to $1000 times the pounds/day needed to comply with RACT. This money is 
only returned to the source after the reconstruction is completed. If 
reconstruction has not been completed by the date required in the 
permit, the

[[Page 52018]]

source may use the escrow money to acquire emission credits.
    Subsection (i) establishes the requirements for sources complying 
through schedule modification. Schedule modification by permit is 
allowed only if the source can demonstrate to the Commissioner that it 
is not economically or technically feasible to comply with the emission 
limitations, fuel switching, or a 40% emission reduction. Subsection 
(i) applies only to oil-fired turbines or fast-response double-furnace 
Naval boilers that generate power to create simulated high-altitude 
atmospheres for the testing of aircraft engines or testing of fuel-
burning equipment undergoing research and development.
    Subsection (j) establishes the requirements for sources complying 
with subsection (e) emission limitations through emissions trading. 
Under subsection (d)(4), compliance through emission reduction trading 
is allowed only through revisions to the SIP. Therefore, each use of 
emissions trading for compliance with subsection (e) limits will be 
reviewed and processed as a separate regulatory action.
    Subsection (k) covers requirements for emission testing and 
monitoring. Units at major sources having stacks which emitted 100 tons 
per year or more at anytime since 1990 are required to install CEMS. 
Sources with CEMS are required to demonstrate compliance on a block 24-
hour basis, including emissions from start-up, shut-down, and equipment 
malfunctions. All other sources are required to demonstrate compliance 
through three 1-hour stack tests. Initial compliance demonstrations 
were required by May 31, 1995. Sources without CEMS are required to 
conduct emission tests once every 5 years. Sources may apply for a one-
year extension to comply with subsection (k) requirements.
    Subsection (l) covers recordkeeping and reporting requirements 
concerning operating hours, fuel usage, NOX emissions, 
equipment maintenance, CEMS records, and emissions testing information. 
Sources must retain these records for five years. Sources with CEMS are 
required to submit quarterly excess emissions reports and all sources 
are required to submit annual emission reports.
    Subsection (m) covers compliance plans. Sources were required to 
submit certified compliance plans to the Commissioner by September 1, 
1994.

B. Case-Specific Emission Trading Orders

    In addition to the submittal of section 22a-174-22, Connecticut 
subsequently submitted 23 case-specific SIP revisions for sources 
involved in the trading of NOX credits as part of the 
emission reduction trading option of subsection 22a-174-22(j). These 
SIP revisions consist of SIP narratives, which describe how 
Connecticut's actions comply with the State program requirements of the 
EIP (see 40 CFR Part 51.493), and the trading orders issued by the 
State, which define the enforceable requirements applicable to the 
sources involved in trading. Of the 23 case-specific packages, 4 
involve the generation of NOX credits and 19 involve the use 
of NOX credits in order to meet the NOX emission 
reduction requirements of section 22a-174-22. EPA's analysis in the 
attachments to the TSD addresses Connecticut's compliance with EPA 
regulations and guidance concerning the EIP.
    The first credit creation submittal involves United Illuminating 
Company's Station #3 in New Haven. Consent Order no. 8092 was adopted 
by the State on May 18, 1995, submitted to EPA on May 18, 1995, and 
deemed complete by EPA on September 12, 1995. The second credit 
generation consent order, issued to Connecticut Light and Power, Order 
no. 1494, involves reductions at the Devon, Montville, and Norwalk 
stations. Order 1494 was adopted on October 15, 1996, submitted to EPA 
on March 20, 1997, and deemed complete on April 7, 1997. Additionally, 
Order no. 8116 for the Connecticut Resource Recovery Authority, issued 
by the State and submitted to EPA on April 22, 1997, and deemed 
complete by EPA on May 28, 1997, allows for the generation of credit at 
the Hartford facility. Order No. 8123 allows for the creation of credit 
at Algonquin Gas Transmission Company's Cromwell facility. Similarly, 
Order no. 8123 was adopted on April 18, 1997 and submitted to EPA as a 
SIP revision on April 22, 1997. The package was deemed complete on May 
28, 1997.
    The remaining case-specific actions involve the use of 
NOX credits as described in the following consent orders: 
(1) Order no. 8093 for Pfizer, Inc., in Groton, adopted on July 19, 
1995, submitted to EPA on January 17, 1996 and deemed complete on July 
3, 1996; (2) Order no. 8095 for American Ref-Fuel Company of 
Southeastern Connecticut in Preston, adopted on June 2, 1995, submitted 
on August 21, 1995 and deemed complete on September 12, 1995; (3) Order 
no. 8096 for Food Ingredients Company in New Milford, adopted on August 
25, 1995, submitted on June 24, 1996 and deemed complete on July 3, 
1996; (4) Order no. 8100 for Bridgeport RESCO Company in Bridgeport, 
adopted on November 2, 1995, submitted on January 30, 1996 and deemed 
complete on July 3, 1996; (5) Order no. 8105 for Electric Boat Division 
of General Dynamics in Groton, adopted on October 31, 1995, submitted 
on January 30, 1996 and deemed complete on July 3, 1996; (6) Order no. 
8106 for Connecticut Light and Power Company in Middletown, adopted on 
October 10, 1995, submitted on January 30, 1996 and deemed complete on 
July 3, 1996; (7) Order no. 8107 for Northeast Nuclear Energy Company 
in Waterford, adopted on October 13, 1995, submitted on January 30, 
1996 and deemed complete on July 3, 1996; (8) Order no. 8103 for United 
Illuminating Company's Station #4 in New Haven, adopted on February 14, 
1996, submitted on June 17, 1996 and deemed complete on July 3, 1996; 
(9) Order no. 8102 for United Illuminating's auxiliary boiler in New 
Haven, adopted on December 15, 1995, submitted on June 20, 1996 and 
deemed complete on July 3, 1996; (10) Order no. 8118 for South Norwalk 
Electric Works, South Norwalk, adopted on March 19, 1996, submitted on 
July 9, 1996 and deemed complete on November 25, 1996; (11) Order no. 
8119 for City of Norwich, Department of Public Utilities, adopted on 
March 4, 1996, submitted on July 11, 1996 and deemed complete on 
November 25, 1996, (12) Order no. 8115 for the University of 
Connecticut in Storrs, adopted on November 19, 1996, submitted on 
February 18, 1997, and deemed complete on April 7, 1997; (13) Order no. 
1494 for Connecticut Light and Power's Branford, Cos Cob, Devon, 
Franklin Drive, Montville, Middletown, South Meadow, Torrington, Tunnel 
Road, and Norwalk Harbor stations, adopted on October 15, 1996, 
submitted on March 20, 1997, and deemed complete on April 7, 1997; (14) 
Order no. 8101 for the State of Connecticut Department of Mental Health 
and Addiction Services, adopted on July 16, 1996, submitted on March 
24, 1997, and deemed complete on April 7, 1997; (15) Order no. 8130 for 
the State of Connecticut Department of Public Works, adopted on October 
16, 1996, submitted on March 24, 1997, and deemed complete on April 7, 
1997; (16) Order no. 8132 for Bridgeport Hospital, adopted on September 
10, 1996, submitted on March 24, 1997, and deemed complete on April 7, 
1997; (17) Order no. 8135 for Bridgeport Hydraulic Company, adopted on 
December 24, 1996, submitted on March 24, 1997, and deemed complete on 
April 7, 1997; (18) Order no. 8141 for the Town of Wallingford 
Department of Public Utilities, adopted on December 27,

[[Page 52019]]

1997, submitted on March 24, 1997, and deemed complete on April 7, 
1997; (19) Order no. 8113 for Simkins Industries, adopted on November 
19, 1996, submitted to EPA on May 19, 1997, and deemed complete on May 
28, 1997; and, (20) Order no. 8110 for Yale University, adopted on July 
29, 1996, submitted on April 19, 1997, and deemed complete on May 28, 
1997.
    Additionally, on November 16, 1996, Connecticut submitted 
supplementary documentation to EPA in support of the emissions trading 
related consent orders. This documentation included an audit of the 
NOX credit creation and credit use in Connecticut as well as 
a discussion of how the Connecticut program meets the State program 
requirements of the EIP. These documents have been included in the 
Technical Support Document (TSD) as Appendix A.
    The November 16, 1996 documentation demonstrates that the use of 
credits for compliance with section 22a-174-22, including the use of 
one-time or carry over credits during time periods other than when they 
were generated (i.e., the intertemporal use of credits), is consistent 
with the requirements of the Connecticut SIP, RFP and ROP plans, and 
area-wide RACT requirements. The documentation includes an audit of the 
NOX RACT trades in Connecticut from June 1995 to December 
1995 and shows that there was no increase in NOX emissions, 
or ``spiking,'' due to the use of credits for compliance during that 
time. In fact, Connecticut's audit clearly shows that quantity of 
credits created during the ozone season of 1995 were greater than the 
quantity used.
    Connecticut's analysis also discusses a number of their 
NOX RACT program characteristics which inherently buffer the 
intertemporal use of credits. First, some of the credit is generated 
from units which are using additional controls to permanently keep 
emissions at levels well below their limits. Since some or all of this 
credit is not used during the season/year that it is generated, it 
provides a buffer against spiking during that time. Second, most 
sources operate below the required emission rate limitations, creating 
a compliance margin of emission reductions which are not assumed in the 
SIP. This aggregate compliance margin could be quantified relatively 
easily, particularly for sources with continuous emission monitoring 
systems. This margin is estimated to be several hundred tons per year. 
Although concerns have been expressed to EPA about allowing this type 
of margin to be treated as an individual facility's credit, the 
aggregate can be viewed as buffering intertemporal credit use statewide 
regardless of whether a facility's margin would ever be approved as 
tradeable credit. Furthermore, Connecticut has dealt with the question 
of the creditability of the compliance margin on a trade-by-trade basis 
by requiring that a minimum of 10% of credit be retired upon creation 
and that credit users meet an emission limit which is at least 5% lower 
than the RACT limits of subsection (e).
    Also, the Connecticut documentation discusses a number of other 
program elements which, although not quantified at this time, could be 
considered as acting as a trading buffer and helping to ensure that 
RACT and RFP are maintained. For instance, Connecticut's rule does not 
provide for alternative RACT limits (i.e., relaxations of the limits 
set in subsection (e) of the regulation) or compliance date extensions 
(other than the one year extensions for innovative technologies under 
subsection (d)(3)). During the first two years of NOX RACT 
implementation, Connecticut has followed the policy that since other 
compliance options are provided for by the regulation, relaxations are 
not allowed in this program. Admirably, Connecticut has held to this 
policy and the effectiveness of the regulation to reduce emissions has 
been greater than if such variances had been allowed under the rule. If 
Connecticut does, however, ever decide to allow for NOX RACT 
variances while simultaneously relying on the increased rule 
effectiveness for intertemporal credit buffering purposes, EPA will 
have the ability to evaluate the credit balance situation at that time 
since such actions must be reviewed and approved by EPA as changes to 
the SIP.
    Given Connecticut's documentation, EPA believes that Connecticut 
has shown that the quantity of NOX reductions being achieved 
by section 22a-174-22 is at least as great as would have been achieved 
without the trading option. Furthermore, given the inherent buffering 
characteristics of the program, the RFP and SIP attainment requirements 
also should continue to be met. Based upon the documentation presented, 
EPA believes that the emissions trading aspect of the NOX 
RACT program meets all applicable EPA guidances.

IV. Issues

    Subsections (h) and (i) of the regulation do not explicitly require 
facilities undergoing reconstruction or utilizing schedule 
modifications to have RACT orders issued to them and subsequently, to 
have those orders approved by EPA. However, on June 18, 1996, Carmine 
DiBattista, Chief, Bureau of Air Management, Connecticut DEP, sent a 
letter to Susan Studlien, Deputy Director, Office of Ecosystem 
Protection, U.S. EPA Region I, clarifying that either federally 
enforceable permits or case-specific SIP revisions will be submitted 
for the three sources subject to the reconstruction and schedule 
modification provisions. Furthermore, the letter contained 
documentation that neither combustion modifications nor add-on controls 
are technically or economically feasible for the three facilities 
affected by the schedule modification section of the regulation because 
these units are operated intermittently or at irregular loads. Given 
this additional documentation, subsections (h) and (i) are approvable.

V. Final Action

    EPA review of the NOX RACT SIP related submittals, 
including NOX RACT regulation 22a-174-22 and the 23 source-
specific NOX emissions trading orders described above, 
indicates that Connecticut has sufficiently defined the NOX 
RACT requirements for the State. Therefore, EPA is approving section 
22a-174-22, as submitted on May 20, 1997, as well as the 23 source-
specific Connecticut orders, into the SIP at this time.
    EPA is publishing this action without prior proposal because the 
Agency views this as a noncontroversial amendment and anticipates no 
adverse comments. However, in a separate document in this Federal 
Register publication, EPA is proposing to approve the SIP revision 
unless adverse or critical comments are filed. This action will be 
effective December 5, 1997 unless adverse or critical comments are 
received by November 5, 1997.
    If EPA receives such comments, this action will be withdrawn before 
the effective date by simultaneously publishing a subsequent notice 
that will withdraw the final action. All public comments received will 
then be addressed in a subsequent final rule based on this action 
serving as a proposed rule. 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 no such comments are received, the 
public is advised that this action will be effective on December 5, 
1997.
    Nothing in this action should be construed as permitting or 
allowing or establishing a precedent for any future request for 
revision to any State implementation plan. Each request for

[[Page 52020]]

revision to the State implementation plan shall be considered 
separately in light of specific technical, economic, and environmental 
factors and in relation to relevant statutory and regulatory 
requirements.

VI. Administrative Requirements

A. Executive Order 12866

    This action has been classified as a Table 3 action for signature 
by the Regional Administrator under the procedures published in the 
Federal Register on January 19, 1989 (54 FR 2214-2225), as revised by a 
July 10, 1995 memorandum from Mary Nichols, Assistant Administrator for 
Air and Radiation. The Office of Management and Budget (OMB) has 
exempted this regulatory action from E.O. 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.
    SIP approvals under section 110 and subchapter I, part D of the 
Clean Air 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 CAA, preparation of a flexibility 
analysis would constitute Federal inquiry into the economic 
reasonableness of state action. The CAA forbids EPA to base its actions 
concerning SIPs on such grounds. Union Electric Co. v. U.S. EPA, 427 
U.S. 246, 255-66 (1976); 42 U.S.C. 7410(a)(2).

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 the 
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.
    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 approves pre-
existing requirements under State or local law, and imposes no new 
Federal 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 December 5, 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). EPA encourages interested parties to comment in response to 
the proposed rule rather than petition for judicial review, unless the 
objection arises after the comment period allowed for in the proposal.

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Nitrogen dioxide, Ozone, 
Reporting and recordkeeping requirements.

    Note: Incorporation by reference of the State Implementation 
Plan for the State of Connecticut was approved by the Director of 
the Federal Register on July 1, 1982.

    Dated: September 22, 1997.
John P. DeVillars,
Regional Administrator, Region I.

    Part 52 of 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 H--Connecticut

    2. Section 52.370 is amended by adding paragraph (c)(72) to read as 
follows:


Sec. 52.370  Identification of plan.

* * * * *
    (c) * * *
    (72) Revisions to the State Implementation Plan submitted by the 
Connecticut Department of Environmental Protection on: May 18, 1995; 
August 21, 1995; January 17, 1996; January 30, 1996; January 30, 1996; 
January 30, 1996; January 30, 1996; June 17, 1996; June 20, 1996; June 
24, 1996; July 9, 1996; July 11, 1996; February 18, 1997; March 20, 
1997; March 24, 1997; March 24, 1997; March 24, 1997; March 24, 1997; 
March 24, 1997; April 22, 1997; April 22, 1997; May 19, 1997; May 19, 
1997; and May 20, 1997.
    (i) Incorporation by reference.
    (A) Twenty-four letters from the Connecticut Department of 
Environmental Protection dated: May 18, 1995; August 21, 1995; January 
17, 1996; June 24, 1996; January 30, 1996; January 30, 1996; January 
30, 1996; January 30, 1996; June 20, 1996; June 17, 1996; July 11, 
1996; July 9, 1996; March 24, 1997; May 19, 1997; March 24, 1997; March 
20, 1997; March 24, 1997; February 18, 1997; May 19, 1997; March 24, 
1997; March 24, 1997; May 20, 1997; April 22, 1997; and April 22, 1997; 
submitting revisions to the Connecticut State Implementation Plan.
    (B) Connecticut Trading Agreement and Order no. 8092 issued to 
United Illuminating Company's Station #3 in New Haven, effective on May 
18, 1995.
    (C) Connecticut Trading Agreement and No. 8095 issued to American 
Ref-Fuel Company of Southeastern Connecticut in Preston, effective on 
June 2, 1995.
    (D) Connecticut Trading Agreement and Order no. 8093 issued to 
Pfizer, Inc., in Groton, effective on July 19, 1995.

[[Page 52021]]

    (E) Connecticut Trading Agreement and Order no. 8096 issued to Food 
Ingredients Company in New Milford, effective on August 25, 1995.
    (F) Connecticut Trading Agreement and Order no. 8106 issued to 
Connecticut Light and Power Company in Middletown, effective on October 
10, 1995.
    (G) Connecticut Trading Agreement and Order no. 8107 issued to 
Northeast Nuclear Energy Company in Waterford, effective on October 13, 
1995.
    (H) Connecticut Trading Agreement and Order no. 8105 issued to 
Electric Boat Division of General Dynamics in Groton, effective on 
October 31, 1995.
    (I) Connecticut Trading Agreement and Order no. 8100 issued to 
Bridgeport RESCO Company in Bridgeport, effective on November 2, 1995.
    (J) Connecticut Trading Agreement and Order no. 8102 issued to 
United Illuminating's auxiliary boiler in New Haven, effective on 
December 15, 1995.
    (K) Connecticut Trading Agreement and Order no. 8103 issued to 
United Illuminating Company's Station #4 in New Haven, effective on 
February 14, 1996.
    (L) Connecticut Trading Agreement and Order no. 8119 issued to the 
City of Norwich, Department of Public Utilities, effective on March 4, 
1996.
    (M) Connecticut Trading Agreement and Order no. 8118 issued to 
South Norwalk Electric Works, South Norwalk, effective on March 19, 
1996.
    (N) Connecticut Trading Agreement and Order no. 8101 issued to the 
State of Connecticut Department of Mental Health and Addiction 
Services, effective on July 16, 1996.
    (O) Connecticut Trading Agreement and Order no. 8110 issued to Yale 
University, effective on July 29, 1996.
    (P) Connecticut Trading Agreement and Order no. 8132 issued to 
Bridgeport Hospital, effective on September 10, 1996.
    (Q) Connecticut Trading Agreement and Order no. 1494 issued to 
Connecticut Light and Power, involving Branford, Cos Cob, Devon, 
Franklin Drive, Montville, Middletown, South Meadow, Torrington, Tunnel 
Road, and Norwalk Harbor Stations, effective on October 15, 1996.
    (R) Connecticut Trading Agreement and Order no. 8130 issued to the 
State of Connecticut Department of Public Works, effective on October 
18, 1996.
    (S) Connecticut Trading Agreement and Order no. 8115 issued to the 
University of Connecticut in Storrs, effective on November 19, 1996.
    (T) Connecticut Trading Agreement and Order no. 8113 issued to 
Simkins Industries, effective on November 19, 1996.
    (U) Connecticut Trading Agreement and Order no. 8135 issued to 
Bridgeport Hydraulic Company, effective on December 24, 1996.
    (V) Connecticut Trading Agreement and Order no. 8141 issued to the 
Town of Wallingford Department of Public Utilities, effective on 
December 27, 1996.
    (W) Regulations 22a-174-22 ``Control of Nitrogen Oxides 
Emissions,'' adopted on January 23, 1997, which establishes reasonably 
available control technology requirements for major stationary sources 
of nitrogen oxides.
    (X) Connecticut Trading Agreement and Order no. 8123 issued to the 
Algonquin Gas Transmission Company, effective on April 18, 1997.
    (Y) Connecticut Trading Agreement and Order no. 8116 issued to the 
Connecticut Resource Recovery Authority, effective on April 22, 1997.
    (ii) Additional materials.
    (A) Letter, dated June 18, 1996, from Carmine DiBattista, Chief of 
the Bureau of Air Management for the Connecticut DEP, to Susan 
Studlien, Deputy Director of the Office of Ecosystem Protection at U.S. 
EPA, Region I.
    (B) SIP narrative materials, dated May 1995, submitted with 
Connecticut Trading Agreement and Order no. 8092 for United 
Illuminating Company's Station #3 in New Haven.
    (C) SIP narrative materials, dated August 3, 1995, submitted with 
Connecticut Trading Agreement and Order no. 8095 for American Ref-Fuel 
Company of Southeastern Connecticut in Preston.
    (D) SIP narrative materials, dated December 1995, submitted with 
Connecticut Trading Agreement and Order no. 8093 issued to Pfizer, 
Inc., in Groton.
    (E) SIP narrative materials, dated November 1995, submitted with 
Connecticut Trading Agreement and Order no. 8096 issued to Food 
Ingredients Company in New Milford.
    (F) SIP narrative materials, dated November 1995, submitted with 
Connecticut Trading Agreement and Order no. 8106 issued to Connecticut 
Light and Power Company in Middletown.
    (G) SIP narrative materials, dated November 1995, submitted with 
Connecticut Trading Agreement and Order no. 8107 issued to Northeast 
Nuclear Energy Company in Waterford.
    (H) SIP narrative materials, dated October 6, 1995, submitted with 
Connecticut Trading Agreement and Order no. 8105 issued to Electric 
Boat Division of General Dynamics in Groton.
    (I) SIP narrative materials, dated September 29, 1995, submitted 
with Connecticut Trading Agreement and Order no. 8100 issued to 
Bridgeport RESCO Company in Bridgeport.
    (J) SIP narrative materials, dated December 1995, submitted with 
Connecticut Trading Agreement and Order no. 8102 issued to United 
Illuminating's auxiliary boiler in New Haven.
    (K) SIP narrative materials, dated March 1996, submitted with 
Connecticut Trading Agreement and Order no. 8103 issued to United 
Illuminating Company's Station #4 in New Haven.
    (L) SIP narrative materials, dated May 31, 1995, submitted with 
Connecticut Trading Agreement and Order no. 8119 issued to the City of 
Norwich, Department of Public Utilities.
    (M) SIP narrative materials, dated May 31, 1995, submitted with 
Connecticut Trading Agreement and Order no. 8118 issued to South 
Norwalk Electric Works, South Norwalk.
    (N) SIP narrative materials, dated March 1997, submitted with 
Connecticut Trading Agreement and Order no. 8101 issued to the State of 
Connecticut Department of Mental Health and Addiction Services.
    (O) SIP narrative materials, dated May 1997, submitted with 
Connecticut Trading Agreement and Order no. 8110 issued to Yale 
University.
    (P) SIP narrative materials, dated March 1997, submitted with 
Connecticut Trading Agreement and Order no. 8132 issued to Bridgeport 
Hospital.
    (Q) SIP narrative materials, dated March 1997, submitted with 
Connecticut Trading Agreement and Order no. 1494 issued to Connecticut 
Light and Power, involving Branford, Cos Cob, Devon, Franklin Drive, 
Montville, Middletown, South Meadow, Torrington, Tunnel Road, and 
Norwalk Harbor Stations.
    (R) SIP narrative materials, dated March 1997, submitted with 
Connecticut Trading Agreement and Order no. 8130 issued to the State of 
Connecticut Department of Public Works.
    (S) SIP narrative materials, dated February 1996, submitted with 
Connecticut Trading Agreement and Order no. 8115 issued to the 
University of Connecticut in Storrs.
    (T) SIP narrative materials, dated May 1997, submitted with 
Connecticut Trading Agreement and Order no. 8113 issued to Simkins 
Industries.
    (U) SIP narrative materials, dated March 1997, submitted with 
Connecticut Trading Agreement and

[[Page 52022]]

Order no. 8135 issued to Bridgeport Hydraulic Company.
    (V) SIP narrative materials, dated March 1997, submitted with 
Connecticut Trading Agreement and Order no. 8141 issued to the Town of 
Wallingford Department of Public Utilities.
    (W) SIP narrative materials, dated April 1997, submitted with 
Connecticut Trading Agreement and Order no. 8123 issued to the 
Algonquin Gas Transmission Company.
    (X) SIP narrative materials, dated April 1997, submitted with 
Connecticut Trading Agreement and Order no. 8116 issued to the 
Connecticut Resource Recovery Authority.
    3. Section 52.385 is added to read as follows:


Sec. 52.385  EPA-approved Connecticut regulations.

    The following table identifies the State regulations which have 
been submitted to and approved by EPA as revisions to the Connecticut 
State Implementation Plan. This table is for informational purposes 
only and does not have any independent regulatory effect. To determine 
regulatory requirements for a specific situation, consult the plan 
identified in Sec. 52.370. To the extent that this table conflicts with 
Sec. 52.370, Sec. 52.370 governs.

                                                         Table 52.384--EPA-Approved Regulations                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                             Dates                                                                                      
                                           -----------------------------------------                                                                    
   Connecticut State       Title/subject                                    Date         Federal Register          Section 52.370          Comments/    
        citation                               Date adopted by State    approved by          citation                                     description   
                                                                            EPA                                                                         
--------------------------------------------------------------------------------------------------------------------------------------------------------
19-508.................  Connecticut Air    3/3/72....................      5/31/72  37 FR 10842............  (c) 1&2................  State of CT Air  
                          Implementation                                                                                                Implementation  
                          Plan.                                                                                                         Plan.           
                                            8/10/72...................      5/14/73  38 FR 12696............  (c) 3..................  Correction to    
                                                                                                                                        submission dates
                                                                                                                                        for supplemental
                                                                                                                                        information.    
                                            4/9/74....................       6/2/75  40 FR 23746............  (c) 5..................  Identification of
                                                                                                                                        Air Quality     
                                                                                                                                        Maintenance     
                                                                                                                                        Areas.          
                                            8/10/76...................     11/29/77  42 FR 60753............  (c) 7..................  Adds carbon      
                                                                                                                                        monoxide/oxidant
                                                                                                                                        control strategy
                                                                                                                                        and regulations.
                                            6/30/77...................      9/29/78  43 FR 44840............  (c) 8..................  Describes air    
                                                                                                                                        quality         
                                                                                                                                        surveillance    
                                                                                                                                        program.        
22a-171................  Small Business     1/12/93...................      5/19/94  59 FR 26123............  (c) 65.................  Established small
                          Assistance.                                                                                                   business        
                                                                                                                                        compliance and  
                                                                                                                                        technical       
                                                                                                                                        assistance      
                                                                                                                                        program.        
22a-174-1..............  Definitions......  4/01/72...................      5/31/72  37 FR 23085............  (b).                     .................
                                            5/31/72...................     12/23/80  45 FR 84769............                           Adds definitions 
                                                                                                                                        for PSD and NSR 
                                                                                                                                        program. EPA    
                                                                                                                                        took no action  
                                                                                                                                        because CT did  
                                                                                                                                        not submit      
                                                                                                                                        regulations.    
                                            12/13/84..................      7/18/85  50 FR 29229............  (c) 34.................  Revision to the  
                                                                                                                                        definition of   
                                                                                                                                        VOC adding 7    
                                                                                                                                        nonreactive     
                                                                                                                                        compounds to    
                                                                                                                                        exempt list.    
                                            12/27/88..................      2/23/93  58 FR 10957............  (c) 56.................  Changes          
                                                                                                                                        definitions of  
                                                                                                                                        ``actual        
                                                                                                                                        emissions'' and 
                                                                                                                                        ``potential     
                                                                                                                                        emissions''     
                                                                                                                                        throughout      
                                                                                                                                        regulations.    
22a-174-2..............  Registration       4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          requirements for                                                                                                              
                          existing                                                                                                                      
                          stationary                                                                                                                    
                          sources of air                                                                                                                
                          pollutants.                                                                                                                   
                                            8/31/79...................     12/23/80  45 FR 84769............   (c) 11................  In tandem with   
                                                                                                                                        changes to      
                                                                                                                                        Regulation 3,   
                                                                                                                                        sources existing
                                                                                                                                        prior to 1972   
                                                                                                                                        must register.  
22a-174-3..............  Permits for        4/04/72...................      5/31/72  37 FR 23085............  (b)....................  Conditional      
                          construction and                                                                                              approval of NSR 
                          operation of                                                                                                  program.        
                          stationary                                                                                                                    
                          sources.                                                                                                                      
                                            8/30/79...................     12/23/80  45 FR 84769............  (c)11..................  EPA conditionally
                                                                                                                                        approved changes
                                                                                                                                        to meet federal 
                                                                                                                                        New Source      
                                                                                                                                        Review (NSR)    
                                                                                                                                        requirements. CT
                                                                                                                                        did not submit  
                                                                                                                                        Prevention of   
                                                                                                                                        Significant     
                                                                                                                                        Determination   
                                                                                                                                        program.        

[[Page 52023]]

                                                                                                                                                        
                                            8/31/79...................      1/07/82  47 FR 762..............  (c) 20.................  Final approval of
                                                                                                                                        NSR Rules       
                                                                                                                                        removing        
                                                                                                                                        conditions of 12/
                                                                                                                                        23/80.          
                                            10/10/80..................      1/07/82  47 FR 762..............  (c) 20.................  Allows           
                                                                                                                                        conditional     
                                                                                                                                        exemption of    
                                                                                                                                        resource        
                                                                                                                                        recovery        
                                                                                                                                        facilities from 
                                                                                                                                        offset          
                                                                                                                                        transactions.   
                                            10/10/80..................      1/07/82  47 FR 762..............  (c) 20.................  Replaces the word
                                                                                                                                        ``actual'' with 
                                                                                                                                        word            
                                                                                                                                        ``allowable''.  
                                            12/27/88..................      2/23/93  58 FR 10957............  (c) 56.................  Changes to NSR   
                                                                                                                                        and PSD         
                                                                                                                                        requirements.   
22a-174-4..............  Source             4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          monitoring,                                                                                                                   
                          record keeping,                                                                                                               
                          reporting and                                                                                                                 
                          authorization of                                                                                                              
                          inspection of                                                                                                                 
                          air pollution                                                                                                                 
                          sources.                                                                                                                      
                                            10/31/77..................     12/23/80  45 FR 84769............  (c) 11.................  Clarifies record 
                                                                                                                                        keeping and     
                                                                                                                                        reporting       
                                                                                                                                        requirements and
                                                                                                                                        rescinds smoke  
                                                                                                                                        monitoring      
                                                                                                                                        requirements for
                                                                                                                                        small sources.  
                                            12/15/80..................      8/24/82  47 FR 36822............  (c) 20.................  Rescinded        
                                                                                                                                        requirements for
                                                                                                                                        smoke monitors  
                                                                                                                                        on sources less 
                                                                                                                                        than 250 mmBtu. 
                                            12/27/88..................      2/23/93  58 FR 10957............  (c) 56.................  Changes to       
                                                                                                                                        opacity         
                                                                                                                                        continuous      
                                                                                                                                        emission        
                                                                                                                                        monitoring (CEM)
                                                                                                                                        requirements.   
22a-174-5..............  Methods for        4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          sampling,                                                                                                                     
                          emission                                                                                                                      
                          testing, and                                                                                                                  
                          reporting.                                                                                                                    
                                            10/05/77..................     12/23/80  45 FR 84769............  (c) 11.................  Tied State       
                                                                                                                                        testing method  
                                                                                                                                        requirement to  
                                                                                                                                        federal         
                                                                                                                                        requirements,   
                                                                                                                                        clarified       
                                                                                                                                        requirements for
                                                                                                                                        stack testing,  
                                                                                                                                        and eliminated  
                                                                                                                                        record keeping  
                                                                                                                                        and reporting   
                                                                                                                                        requirements.   
                                            12/19/80..................      8/28/81  46 FR 43418............  (c) 16.................  Revisions to     
                                                                                                                                        source          
                                                                                                                                        monitoring and  
                                                                                                                                        stack testing   
                                                                                                                                        requirements for
                                                                                                                                        SO2.            
22a-174-6..............  Air Pollution      4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          Emergency                                                                                                                     
                          Episode                                                                                                                       
                          Procedures.                                                                                                                   
                                            8/31/79...................     12/23/80  45 FR 84769............  (c) 11.................  Allows DEP to    
                                                                                                                                        separately limit
                                                                                                                                        mobile and      
                                                                                                                                        stationary      
                                                                                                                                        sources         
                                                                                                                                        depending upon  
                                                                                                                                        the cause of the
                                                                                                                                        episode.        
22a-174-7..............  Malfunction of     4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          Control                                                                                                                       
                          Equipment;                                                                                                                    
                          Reporting.                                                                                                                    
22a-174-8..............  Compliance Plans   4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          and Schedules.                                                                                                                
22a-174-9..............  Prohibition of     4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          air pollution.                                                                                                                
                                            8/31/79...................     12/23/80  45 FR 84769............  (c) 11.................  Non-substantive  
                                                                                                                                        numbering       
                                                                                                                                        change.         

[[Page 52024]]

                                                                                                                                                        
                                            8/31/79...................      8/12/83  48 FR 36579............  (c) 11.................  Full authority   
                                                                                                                                        delegated for   
                                                                                                                                        NSPS and        
                                                                                                                                        NESHAPS.        
                                                                            12/6/91  56 FR 63875............                           Delegation of new
                                                                                                                                        subparts.       
22a-174-10.............  Public             4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          Availability of                                                                                                               
                          Information.                                                                                                                  
22a-174-11.............  Prohibition        4/04/72...................      5/31/72  37 FR 23085............  (b).                     .................
                          against                                                                                                                       
                          concealment of                                                                                                                
                          circumvention.                                                                                                                
22a-174-12.............  Violations and     4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
                          enforcement.                                                                                                                  
22a-174-13.............  Variances........  4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
                                            8/31/79...................     12/23/80  45 FR 84769............  (c) 11.................  Non-substantive  
                                                                                                                                        numbering       
                                                                                                                                        change.         
22a-174-14.............  Compliance with    4/04/72...................      5/31/72  37 FR 10842............  (b).                                      
                          regulation no                                                                                                                 
                          defense to                                                                                                                    
                          nuisance claim.                                                                                                               
22a-174-15.............  Severability.....  4/4/72....................      5/31/72  37 FR 10842............  (b).                                      
22a-174-16.............  Responsibility to  4/4/72....................      5/31/72  37 FR 10842............  (b).                                      
                          comply with                                                                                                                   
                          applicable                                                                                                                    
                          regulations.                                                                                                                  
22a-174-17.............  Control of open    4/04/72...................      5/31/72  37 FR 10842............  (b).                                      
                          burning.                                                                                                                      
22a-174-18.............  Control of         4/4/72....................      5/31/72  37 FR 10842............  (b).                                      
                          particulate                                                                                                                   
                          emissions.                                                                                                                    
                                            11/30/73..................      4/16/74  39 FR 13651............  52.375.................  Allowed Hartford 
                                                                                                                                        Electric Light &
                                                                                                                                        Connecticut     
                                                                                                                                        Light & Power   
                                                                                                                                        Supplies to use 
                                                                                                                                        nonconforming   
                                                                                                                                        fuel from 12/3/ 
                                                                                                                                        73 to 1/1/74.   
                                            7/11/81...................      9/23/82  47 FR 41958............  (c) 22.................  Defines TSP RACT 
                                                                                                                                        for fuel burning
                                                                                                                                        equipment and   
                                                                                                                                        process sources 
                                                                                                                                        including       
                                                                                                                                        cupolas,        
                                                                                                                                        foundries, and  
                                                                                                                                        hot mix asphalt 
                                                                                                                                        plants.         
22a-174-19.............  Control of sulfur  4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
                          compound                                                                                                                      
                          emissions.                                                                                                                    
                                            11/30/73..................      4/16/74  39 FR 13651............  52.375.................  Allowed Hartford 
                                                                                                                                        Electric Light  
                                                                                                                                        and Connecticut 
                                                                                                                                        Power and Light 
                                                                                                                                        to use          
                                                                                                                                        nonconforming   
                                                                                                                                        fuel.           
                                            4/3/79....................      7/30/79  44 FR 44498............  (c) 10.................  Allowed Northeast
                                                                                                                                        Utilities to    
                                                                                                                                        purchase, store,
                                                                                                                                        and burn        
                                                                                                                                        nonconforming   
                                                                                                                                        fuel.           
                                            9/8/80....................      4/27/81  46 FR 23412............  (c) 12.................  Variance for     
                                                                                                                                        Federal         
                                                                                                                                        Paperboard, Inc.
                                            12/19/80 & 3/11/81........      8/28/81  46 FR 43418............  (c) 14.................  Amends sulfur    
                                                                                                                                        control         
                                                                                                                                        strategy.       
                                            3/11/81 & 7/15/81.........      8/28/81  46 FR 43418............  (c) 15.................  Amends New Source
                                                                                                                                        Ambient Impact  
                                                                                                                                        Analysis        
                                                                                                                                        Guideline.      
                                            3/17/81...................     10/23/81  46 FR 51914............  (c) 17.................  Variance for     
                                                                                                                                        Uniroyal, Inc.  
                                            11/2/81...................     11/18/81  46 FR 56612............  (c) 18.................  Approval State   
                                                                                                                                        Energy Trade    
                                                                                                                                        program.        
                                            11/14/75..................     11/18/81  46 FR 56612............  52.380 (e)(1)..........  EPA disapproval  
                                                                                                                                        revision which  
                                                                                                                                        allows exemption
                                                                                                                                        for home heating
                                                                                                                                        with coal,      
                                                                                                                                        historic        
                                                                                                                                        demonstrations, 
                                                                                                                                        and other small 
                                                                                                                                        sources.        

[[Page 52025]]

                                                                                                                                                        
                                            11/12/81..................     12/22/81  46 FR 62062............  (c) 19.................  Variances for    
                                                                                                                                        United          
                                                                                                                                        Technologies    
                                                                                                                                        Corp., Pratt &  
                                                                                                                                        Whitney Aircraft
                                                                                                                                        Division        
                                                                                                                                        facilities in   
                                                                                                                                        New Haven and   
                                                                                                                                        Middletown.     
                                            7/7/81....................     11/12/82  47 FR 51129............  (c) 24.................  Variance for     
                                                                                                                                        Sikorsky        
                                                                                                                                        Aircraft--approv
                                                                                                                                        ed under the    
                                                                                                                                        State Energy    
                                                                                                                                        Trade Program.  
                                            5/27/82...................       2/8/83  48 FR 5723.............  (c) 26.................  Variance for Dow 
                                                                                                                                        Chemical--approv
                                                                                                                                        ed under the    
                                                                                                                                        State Energy    
                                                                                                                                        Trade Program.  
                                            12/15/82..................       5/4/83  48 FR 20051............  (c) 27.................  Variance for     
                                                                                                                                        Lydall, Inc.--  
                                                                                                                                        approved under  
                                                                                                                                        the State Energy
                                                                                                                                        trade (SET)     
                                                                                                                                        Program.        
                                            11/1/82...................      6/28/83  48 FR 29689............  (c) 28.................  Simkins          
                                                                                                                                        Industries--appr
                                                                                                                                        oved under the  
                                                                                                                                        State Energy    
                                                                                                                                        Trade Program.  
                                            3/28/83...................     12/20/83  48 FR 56218............  (c) 30.................  Variance for     
                                                                                                                                        Loomis          
                                                                                                                                        Institute--appro
                                                                                                                                        ved under the   
                                                                                                                                        State Energy    
                                                                                                                                        Trade Program.  
                                            2/19/93...................      1/18/94  59 FR 2531.............  (c) 63.................  Changes          
                                                                                                                                        requirements at 
                                                                                                                                        Himilton        
                                                                                                                                        Standard        
                                                                                                                                        Division of UTC.
22a-174-20.............  Control of         4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
                          organic compound                                                                                                              
                          emissions.                                                                                                                    
                                            8/31/79...................     12/23/80  45 FR 84769............  (c) 11.................  Requirements for 
                                                                                                                                        certain Group I 
                                                                                                                                        CTG source      
                                                                                                                                        categories.     
                                                                                                                                        Conditionally   
                                                                                                                                        approved cutback
                                                                                                                                        asphalt and     
                                                                                                                                        solvent metal   
                                                                                                                                        cleaning        
                                                                                                                                        categories.     
                                            10/10/80..................      1/17/82  47 FR 762..............  (c) 20.................  Requirements for 
                                                                                                                                        cutback asphalt 
                                                                                                                                        (Group I--CTG). 
                                            10/10/80..................      2/17/82  47 FR 6827.............  (c) 25.................  Requirements for 
                                                                                                                                        Group II CTGs   
                                                                                                                                        exclusive of    
                                                                                                                                        controlling     
                                                                                                                                        gasoline tank   
                                                                                                                                        truck leaks,    
                                                                                                                                        petroleum liquid
                                                                                                                                        storage external
                                                                                                                                        floating roof   
                                                                                                                                        tanks,          
                                                                                                                                        manufacture of  
                                                                                                                                        vegetable oil,  
                                                                                                                                        pneumatic rubber
                                                                                                                                        tire categories.
                                                                                                                                        Other VOC rules.
                                            10/10/80..................       6/7/82  47 FR 24452............  (c) 23.................  Alternative      
                                                                                                                                        emission        
                                                                                                                                        reduction       
                                                                                                                                        provisions.     
                                            12/10/82..................       2/1/84  49 FR 3989.............  (c) 29.................  Requirements for 
                                                                                                                                        small open top  
                                                                                                                                        degreasers      
                                                                                                                                        (Group I--CTG). 
                                            9/24/83...................       2/1/84  49 FR 3989.............  (c) 29.................  Exempts colds    
                                                                                                                                        cleaners at auto
                                                                                                                                        repair          
                                                                                                                                        facilities.     
                                            9/24/83...................      3/21/84  49 FR 10542............  (c) 32.................  Adds degreasing  
                                                                                                                                        requirements for
                                                                                                                                        conveyorized and
                                                                                                                                        cold cleaning   
                                                                                                                                        operations.     
                                            8/31/79...................      3/21/84  49 FR 10542............  (c) 32.................  Requirements for 
                                                                                                                                        solvent metal   
                                                                                                                                        cleaning (Group 
                                                                                                                                        I CTG).         

[[Page 52026]]

                                                                                                                                                        
                                            9/24/83...................      3/21/84  49 FR 10542............  (c) 32.................  Exempts storage  
                                                                                                                                        vessels from    
                                                                                                                                        submerged fill. 
                                                                                                                                        Delays effective
                                                                                                                                        date of Stage I 
                                                                                                                                        vapor recovery  
                                                                                                                                        by 1 year.      
                                                                                                                                        Requires RACT   
                                                                                                                                        for all major   
                                                                                                                                        sources of VOC  
                                                                                                                                        not covered     
                                                                                                                                        under a CTG     
                                                                                                                                        document.       
                                            9/24/83...................     10/19/84  49 FR 41026............  (c) 33.................  Adds major non-  
                                                                                                                                        ctg sources     
                                                                                                                                        covered by      
                                                                                                                                        20(ee) to       
                                                                                                                                        applicability,  
                                                                                                                                        compliance,     
                                                                                                                                        alternative     
                                                                                                                                        emission        
                                                                                                                                        reduction and   
                                                                                                                                        seasonal        
                                                                                                                                        operation after 
                                                                                                                                        burner          
                                                                                                                                        provisions.     
                                            12/13/84..................      7/18/85  50 FR 29229............  (c) 34.................  Revision to      
                                                                                                                                        cutback asphalt 
                                                                                                                                        regulation.     
                                                                                                                                        Requires        
                                                                                                                                        facilities with 
                                                                                                                                        external        
                                                                                                                                        floating roofs  
                                                                                                                                        to install      
                                                                                                                                        secondary seats.
                                                                                                                                        Changes to      
                                                                                                                                        gasoline tank   
                                                                                                                                        truck           
                                                                                                                                        regulation.     
                                            4/23/86...................     11/20/86  51 FR 41963............  (c) 36.................  VOC RACT for     
                                                                                                                                        Connecticut     
                                                                                                                                        Charcoal        
                                                                                                                                        Company.        
                                            4/28/86...................      2/19/87  52 FR 5104.............  (c) 37.................  VOC RACT for King
                                                                                                                                        Industries.     
                                            8/8/87....................     12/17/87  52 FR 47925............  (c) 39.................  VOC RACT for     
                                                                                                                                        Belding         
                                                                                                                                        Corticelli      
                                                                                                                                        Thread Company. 
                                            5/28/86...................      2/17/88  51 FR 4621.............  (c) 41.................  Effective date   
                                                                                                                                        clarification   
                                                                                                                                        for Connecticut 
                                                                                                                                        Charcoal.       
                                            9/24/87...................      4/11/88  53 FR 11847............  (c) 42.................  VOC RACT for     
                                                                                                                                        Raymark         
                                                                                                                                        Industries, Inc.
                                            2/2/87....................      5/19/88  53 FR 17934............  (c) 38.................  Clarifies        
                                                                                                                                        applicability of
                                                                                                                                        VOC compliance  
                                                                                                                                        methods for     
                                                                                                                                        surface coating 
                                                                                                                                        sources.        
                                            3/17/87...................      5/19/88  53 FR 17934............  (c) 38.................  Adds regulations 
                                                                                                                                        for SOCMI       
                                                                                                                                        fugitive leaks  
                                                                                                                                        and polystyrene 
                                                                                                                                        resins.         
                                            8/21/87...................      7/12/88  53 FR 26256............  (c) 44.................  VOC RACT for     
                                                                                                                                        Spongex         
                                                                                                                                        International   
                                                                                                                                        Ltd.            
                                            12/26/86..................       8/1/88  53 FR 28884............  (c) 43.................  VOC RACT for     
                                                                                                                                        American        
                                                                                                                                        Cyanamid        
                                                                                                                                        Company.        
                                            10/27/88..................       3/8/89  54 FR 9781.............  (c) 48.................  VOC RACT for Dow 
                                                                                                                                        Chemical, U.S.A.
                                            6/7/88....................      3/24/89  54 FR 12193............  (c) 46.................  VOC RACT for New 
                                                                                                                                        Departure Hyatt.
                                            12/14/88..................      4/10/89  54 FR 14226............  (c) 49.................  VOC RACT for     
                                                                                                                                        Stanadyne.      
                                            3/22/89...................      5/30/89  54 FR 22891............  (c) 51.................  VOC RACT for     
                                                                                                                                        Pratt & Whitney 
                                                                                                                                        Division of UTC.
                                            12/30/88..................       6/2/89  54 FR 23650............  (c) 50.................  Changes limit on 
                                                                                                                                        volatility of   
                                                                                                                                        gasoline.       
                                            10/19/87..................     11/28/89  54 FR 48885............  (c) 47.................  VOC RACT for     
                                                                                                                                        Frismar, Inc.   
                                            10/18/88..................     11/39/89  54 FR 49284............  (c) 52.................  VOC RACT for     
                                                                                                                                        Pfizer, Inc.    
                                            9/5/89....................     12/22/89  54 FR 52798............  (c) 53.................  VOC RACT for     
                                                                                                                                        Uniroyal        
                                                                                                                                        Chemical Co.    
                                            11/29/89..................      3/12/90  55 FR 9121.............  (c) 54.................  VOC RACT for     
                                                                                                                                        Hamilton        
                                                                                                                                        Standard        
                                                                                                                                        Division of     
                                                                                                                                        United          
                                                                                                                                        Technologies    
                                                                                                                                        Corp.           

[[Page 52027]]

                                                                                                                                                        
                                            11/2/88...................      3/14/90  55 FR 9442.............  (c) 55.................  VOC RACT for     
                                                                                                                                        Heminway &      
                                                                                                                                        Bartlett        
                                                                                                                                        Manufacturing   
                                                                                                                                        Company.        
                                            10/31/89..................     10/18/91  56 FR 52205............  (c) 58.................  Changes          
                                                                                                                                        applicability to
                                                                                                                                        facilities with 
                                                                                                                                        >=15 pounds VOC 
                                                                                                                                        per day.        
                                            10/31/89..................     10/18/91  56 FR 52205............  (c) 58.................  Various changes  
                                                                                                                                        to Section 20   
                                                                                                                                        approved.       
                                            9/1/93....................     11/19/93  58 FR 61041............  .......................  Withdrawal of NPR
                                                                                                                                        for Sikorsky    
                                                                                                                                        Aircraft        
                                                                                                                                        Division of UTC,
                                                                                                                                        Bridgeport.     
22a-174-21.............  Control of carbon  4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
                          monoxide                                                                                                                      
                          emissions.                                                                                                                    
                                            9/21/82...................      3/21/84  49 FR 10542............  (c) 32.................  CO attainment    
                                                                                                                                        plan.           
22a-174-22.............  Control of         4/472.....................      5/31/72  37 FR 23085............  (b).                                      
                          nitrogen oxide                                                                                                                
                          emissions.                                                                                                                    
                                            8/31/79...................     12/23/80  49 FR 84769............  (c) 11.................  Exemption of fast
                                                                                                                                        response double 
                                                                                                                                        furnace naval   
                                                                                                                                        burners and     
                                                                                                                                        cyclone furnaces
                                                                                                                                        (not addressed  
                                                                                                                                        by EPA).        
                                            5/18/95...................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for United      
                                                                                                                                        Illuminating's  
                                                                                                                                        Station #3, in  
                                                                                                                                        New Haven.      
                                            6/2/95....................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for American Ref-
                                                                                                                                        Fuel of         
                                                                                                                                        Southeastern    
                                                                                                                                        Connecticut in  
                                                                                                                                        Preston.        
                                            7/19/95...................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Pfizer, Inc.
                                                                                                                                        in Groton.      
                                            8/25/95...................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Food        
                                                                                                                                        Ingredients     
                                                                                                                                        Specialties,    
                                                                                                                                        Inc. in New     
                                                                                                                                        Milford.        
                                            10/10/95..................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Connecticut 
                                                                                                                                        Light and Power 
                                                                                                                                        in Middletown.  
                                            10/13/95..................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Northeast   
                                                                                                                                        Nuclear Energy  
                                                                                                                                        Co. in          
                                                                                                                                        Waterford.      
                                            10/31/95..................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Electric    
                                                                                                                                        Boat Division of
                                                                                                                                        General Dynamics
                                                                                                                                        in Groton.      
                                            11/2/95...................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Bridgeport  
                                                                                                                                        RESCO Co. in    
                                                                                                                                        Bridgeport.     
                                            12/15/95..................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for United      
                                                                                                                                        Illuminating's  
                                                                                                                                        auxiliary       
                                                                                                                                        boiler, in New  
                                                                                                                                        Haven.          
                                            2/14/96...................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for United      
                                                                                                                                        Illuminating's  
                                                                                                                                        Station #4, in  
                                                                                                                                        New Haven.      
                                            3/4/96....................      10/6/97    .....................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Norwich     
                                                                                                                                        Department of   
                                                                                                                                        Public          
                                                                                                                                        utilities.      
                                            3/19/96...................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for South       
                                                                                                                                        Norwalk Electric
                                                                                                                                        Works.          

[[Page 52028]]

                                                                                                                                                        
                                            7/16/96...................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for the         
                                                                                                                                        Connecticut     
                                                                                                                                        Dept. of Mental 
                                                                                                                                        Health and      
                                                                                                                                        Addiction       
                                                                                                                                        Services.       
                                            7/29/96...................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Yale        
                                                                                                                                        University.     
                                            9/10/96...................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Bridgeport  
                                                                                                                                        Hospital.       
                                            10/15/96..................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Connecticut 
                                                                                                                                        Light & Power's 
                                                                                                                                        Branford, Cos   
                                                                                                                                        Cob, Devon,     
                                                                                                                                        Franklin Drive, 
                                                                                                                                        Montville,      
                                                                                                                                        Middletown,     
                                                                                                                                        South Meadow,   
                                                                                                                                        Torrington,     
                                                                                                                                        Tunnel Road, and
                                                                                                                                        Norwalf Harbor  
                                                                                                                                        stations.       
                                            10/18/96..................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for the         
                                                                                                                                        Connecticut     
                                                                                                                                        Department of   
                                                                                                                                        Public Works.   
                                            11/19/96..................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for University  
                                                                                                                                        of Connecticut  
                                                                                                                                        in Storrs.      
                                            11/19/96..................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Simkins     
                                                                                                                                        Industries.     
                                            12/24/96..................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for Bridgeport  
                                                                                                                                        Hydraulic       
                                                                                                                                        Company.        
                                            12/27/96..................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for the Town of 
                                                                                                                                        Wallingford     
                                                                                                                                        Dept. of Public 
                                                                                                                                        Utilities.      
                                            1/23/97...................      10/6/97  .......................  (c) 72.................  Establishes NOX  
                                                                                                                                        RACT regulations
                                                                                                                                        and source-     
                                                                                                                                        specific        
                                                                                                                                        requirements.   
                                            4/18/97...................      10/6/97  .......................  (c) 72.................  Case-Specific    
                                                                                                                                        trading order   
                                                                                                                                        for Algonquin   
                                                                                                                                        Gas Transmission
                                                                                                                                        Company.        
                                            4/22/97...................      10/6/97  .......................  (c) 72.................  Case-specific    
                                                                                                                                        trading order   
                                                                                                                                        for the         
                                                                                                                                        Connecticut     
                                                                                                                                        Resource        
                                                                                                                                        Recovery        
                                                                                                                                        Authority.      
22a-174-23.............  Control of Odors.  4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
                         Rescinded from     8/31/79...................     12/23/80  45 FR 84769............  (c) 11.................  EPA has no       
                          Federal SIP.                                                                                                  authority to    
                                                                                                                                        control odors.  
22a-174-24.............  Connecticut        4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
                          primary and                                                                                                                   
                          secondary                                                                                                                     
                          standards.                                                                                                                    
                                            7/11/81...................     11/18/81  46 FR 56612............  (c) 18.................  Eliminated State 
                                                                                                                                        24-hour and     
                                                                                                                                        annual standard 
                                                                                                                                        for SO2.        
                                            10/8/80...................      2/17/82  47 FR 6827.............  (c) 25.................  Adopted ambient  
                                                                                                                                        air quality     
                                                                                                                                        standards for   
                                                                                                                                        lead and revised
                                                                                                                                        the ozone       
                                                                                                                                        standard.       
                                            10/8/80...................      8/24/82  47 FR 36822............  (c) 20.................  EPA took ``no    
                                                                                                                                        action'' on     
                                                                                                                                        definition of   
                                                                                                                                        the term        
                                                                                                                                        ``acceptable    
                                                                                                                                        method'' because
                                                                                                                                        did not ensure  
                                                                                                                                        consistency with
                                                                                                                                        EPA monitoring  
                                                                                                                                        regulations.    

[[Page 52029]]

                                                                                                                                                        
                                            10/8/80...................      11/2/82  47 FR 49646............  (c) 20.................  Correction to    
                                                                                                                                        subparagraph    
                                                                                                                                        designation.    
                                            10/8/80...................     12/13/85  50 FR 50906............  (c) 35.................  Approved         
                                                                                                                                        definition of   
                                                                                                                                        acceptable      
                                                                                                                                        method.         
                                            2/25/91...................      3/24/92  57 FR 10139............  (c) 61.................  Requires use of  
                                                                                                                                        low sulfur fuels
                                                                                                                                        at Connecticut  
                                                                                                                                        Light & Power in
                                                                                                                                        Montville.      
                                            2/14/92...................     11/20/92  57 FR 54703............  (c) 59.................  Requires use of  
                                                                                                                                        low sulfur fuels
                                                                                                                                        at Stones CT    
                                                                                                                                        Paperboard Corp.
                                            2/5/92....................     11/20/92  57 FR 54703............  (c) 59.................  Requires use of  
                                                                                                                                        low sulfur fuel 
                                                                                                                                        at Hartford     
                                                                                                                                        Hospital.       
22a-174-25.............  Effective date...  4/4/72....................      5/31/72  37 FR 23085............  (b).                                      
22a-174-27.............  Emission           9/24/82...................      3/21/84  49 FR 10542............  (c) 32.................  Exhaust          
                          Standards for                                                                                                 ``emission      
                          Motor Vehicles.                                                                                               standards'' for 
                                                                                                                                        periodic motor  
                                                                                                                                        vehicle         
                                                                                                                                        inspection and  
                                                                                                                                        maintenance.    
14-164C................  Periodic Motor     7/27/82...................      3/21/84  49 FR 10542............  (c) 32.................  Department of    
                          Vehicle                                                                                                       Motor Vehicle   
                          Emissions                                                                                                     Regulations     
                          Inspection and                                                                                                establishing    
                          Maintenance.                                                                                                  specifications  
                                                                                                                                        for Connecticut 
                                                                                                                                        I&M program.    
22a-174-30.............  Gasoline Vapor     1/12/93...................     12/17/93  58 FR 65930............  (c) 62.................  Requires Stage II
                          Recovery.                                                                                                     vapor recovery  
                                                                                                                                        from gasoline   
                                                                                                                                        dispensers.     
                                                                            1/18/94  59 FR 2649.............  (c) 62.................  Correction to 12/
                                                                                                                                        17/93 notice.   
22a-174-100............  Permits for        1/9/74....................      2/25/74  39 FR 7280.............  (c) 4..................  Requires review  
                          construction of                                                                                               of air impacts  
                          indirect sources                                                                                              of indirect     
                          Rescinded from                                                                                                sources.        
                          federal SIP.                                                                                                                  
                                            8/20/74...................      2/13/76  41 FR 6765.............  (c) 6..................  Added indirect   
                                                                                                                                        source review   
                                                                                                                                        (ISR)           
                                                                                                                                        regulations.    
                                            6/30/77...................      1/26/79  44 FR 5427.............  (c) 9.                                    
                                            NA........................     12/23/79  45 FR 84769............  (c) 11.................  SIP shown to     
                                                                                                                                        attain standards
                                                                                                                                        as expeditiously
                                                                                                                                        as practicable  
                                                                                                                                        without ISR     
                                                                                                                                        regulation.     
--------------------------------------------------------------------------------------------------------------------------------------------------------

[FR Doc. 97-26434 Filed 10-3-97; 8:45 am]
BILLING CODE 6560-50-P