Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 52.370: Identification of plan.

(a) Purpose and scope. This section sets forth the applicable State implementation plan for the State of Connecticut under section 110 of the CAA, 42 U.S.C. 7401-7671q, and 40 CFR part 51 to meet national ambient air quality standards.
(b) Incorporation by reference. (1) Material listed in paragraphs (c) and (d) of this section with an EPA approval date prior to August 25, 2025, was approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Material is incorporated as it exists on the date of the approval and notification of any change in the material will be published in the Federal Register. Entries in paragraphs (c) and (d) of this section with EPA approval dates after August 25, 2025, will be incorporated by reference in the next update to the SIP compilation.
(2) EPA Region 1 certifies that the rules/regulations provided by EPA in the SIP compilation at the addresses in paragraph (b)(3) of this section are an exact duplicate of the officially promulgated State rules/regulations which have been approved as part of the State implementation plan as of the dates referenced in paragraph (b)(1) of this section.
(3) Copies of the materials incorporated by reference may be inspected at the Region 1 EPA Office at 5 Post Office Square—Suite 100, Boston, MA 02109. To obtain the material, please call the EPA Region 1 Office. You may also inspect the material with an EPA approval date prior to August 25, 2025, at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email fr.inspection@nara.gov.
(c) EPA-approved regulations.
EPA-Approved Connecticut Regulations and Statutes
State citation Title/subject State effective date EPA approval date Explanations
14-164c Periodic Motor Vehicle Emissions Inspection and Maintenance 05/28/2004 12/05/2008, 73 FR 74019 DMV regulation revisions for test and repair network and implementing OBD2 and other tests.
22a-171 Duties of Commissioner of Environmental Protection 01/12/1993 05/19/1994, 59 FR 26123 Associated with the Small Business Stationary Source Technical and Environmental Compliance Assistance Program.
22a-174-1 Definitions 11/13/2023 02/12/2024, 89 FR 9771 Modified definition of “severe non-attainment area for ozone.”
Note: Definitions which have been Incorporated By Reference into the Connecticut State Implementation Plan are numbered consecutively above by EPA, and do not necessarily correspond to the State's assigned definition number in the Connecticut State Regulation. It is Connecticut's practice to renumber their definitions in Section 22a-174-1 when definitions are added or deleted from the State Regulation.
22a-174-2a Procedural Requirements for New Source Review and Title V Permitting 11/18/2020 09/05/2023, 88 FR 60591 Revisions made to 22a-174-2a(c)(3), 22a-174-2a(d)(9), 22a-174-2a(e)(3)(C), 22a-174-2a(e)(3)(E), 22a-174-2a(e)(7), 22a-174-2a(f)(2), and 22a-174-2a(f)(2)(G).
22a-174-3a Permit to construct and operate stationary sources 3/14/2024 4/2/2026, 91 FR 16556 This revision adds 22a-174-3a(a)(2)(C)(ii), 22a-174-3a(l)(1)(B), and 22a-174-3a(l)(1)(C) to update and correct citations to EPA rules; clarifications to the applicability of nonattainment New Source Review for new major sources and major modifications at existing major sources.
22a-174-3b Permits for Construction and Operation of Stationary Sources 04/04/2006 08/31/2006, 71 FR 51761 Only the automotive refinishing requirements of 22a-174-3b are being approved. Connecticut did not submit the other subsections of the rule as part of its SIP revision.
22a-174-4a Source monitoring, record keeping and reporting 10/28/2022 07/08/2024, 89 FR 55888 Replaces 22a-174-4.
22a-174-5 Methods for Sampling, Emission Testing, and Reporting 12/19/1980 04/15/2014 08/28/1981, 46 FR 43418 05/25/2016, 81 FR 33134
19-508-6 Air Pollution Emergency Episode Procedures 08/31/1979 12/23/1980, 45 FR 84769
22a-174-7 Air Pollution Control Equipment and Monitoring Equipment Operation 04/01/2004 07/16/2014, 79 FR 41427
19-508-8, 22a-174-8 Compliance Plan and Schedules 12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.
19-508-9 Prohibition of Air Pollution 08/31/1979 08/12/1983, 48 FR 36579
19-508-10 Public Availability of Information 04/04/1972 10/28/1972, 37 FR 23085
19-508-11 Prohibition Against Concealment or Circumvention 04/04/1972 10/28/1972, 37 FR 23085
19-508-12 Violations and Enforcement 04/04/1972 10/28/1972, 37 FR 23085
19-508-13 Variances 08/31/1979 12/23/1980, 45 FR 84769
19-508-14 Compliance with Regulation No Defense to Nuisance Claim 04/04/1972 05/31/1972, 37 FR 10842
19-508-15 Severability 04/04/1972 05/31/1972, 37 FR 10842
19-508-16 Responsibility to Comply with Applicable Regulations 04/04/1972 05/31/1972, 37 FR 10842
19-508-18 Control of Particulate Emissions 07/11/1981 09/23/1982, 47 FR 41958
22a-174-18 Control of Particulate Matter and Visible Emissions 04/01/2004 07/16/2014, 79 FR 41427 All of Section 22a-174-18 is approved, with the exception of the phrase “or malfunction” in Section 22a-174-18(j)(1) and all of Section 22a-174-18(j)(2), which CT DEEP withdrew from the SIP submittal. Because Connecticut withdrew Section 22a-174-18(j)(2) from its SIP submission, stationary sources subject to a Federal NSPS will remain subject to the opacity limits contained in “Control of Particulate Emissions” under the SIP (See 37 FR 10842). See Section 19-508-18, “Control of Particulate Emissions” posted at www.epa.gov/sips-ct/epa-approved-regulations-connecticut-sip.
12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.
08/03/2018 10/29/2020, 85 FR 68472 Approval of revisions to subsections (c), (f), and (j).
22a-174-19 Control of Sulfur Compound Emissions 11/02/1981 04/15/2014 11/18/1981, 46 FR 56612 05/25/2016, 81 FR 33134
22a-174-19a Control of sulfur dioxide emissions from power plants and other large stationary sources of air pollution 12/28/2000 07/10/2014, 79 FR 39322 Approves the sulfur dioxide emission standards and fuel sulfur limits for units subject to the CT NOX Budget program. The following sections were not submitted as part of the SIP: Sections (a)(5); (a)(8); (a)(11); (d); (e)(4); (f); (g); (h); and in (i)(2) reference to (e)(4).
04/15/2014 05/25/2016, 81 FR 33134 Revises sections 22a-174-19a(e) and 22a-174-19a(i) and removes outdated section 22a-174-19a(c).
22a-174-19b Fuel Sulfur Content Limitations for Stationary Sources 04/15/2014 05/25/2016, 81 FR 33134 A new regulation which limits the sulfur content of liquid fuels used in stationary sources. Subsection (e) was not submitted by the State.
22a-174-20 Control of Organic Compound Emissions 10/28/2022 07/08/2024, 89 FR 55888 Amends 22a-174-20(a)(12).
19-508-21 Control of Carbon Monoxide Emissions 04/04/1972 10/28/1972, 37 FR 23085
22a-174-22 Control of Nitrogen Oxides Emissions 01/23/1997 12/28/2000 10/06/1997, 62 FR 52016 07/10/2014, 79 FR 39322 Amended by adding section (e)(3), which approves the Oct-April NOX emission limits for units subject to the CT NOX Budget program.
22a-174-22a Nitrogen Oxides (NOX) Budget Program 03/03/1999 09/28/1999, 64 FR 52233
09/04/2007 01/24/2008, 73 FR 4105 Repealed as of January 24, 2008. Superseded by CAIR (22a-174-22c).
22a-174-22b Post-2002 Nitrogen Oxides (NOX) Budget Program 09/29/1999 12/27/2000, 65 FR 81743
09/04/2007 01/24/2008, 73 FR 4105 Repealed as of May 1, 2010. Superseded by CAIR (22a-174-22c).
22a-174-22c The Clean Air Interstate Rule (CAIR) Nitrogen Oxides (NOX) Ozone Season Trading Program 12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.
22a-174-22e Control of nitrogen oxides emissions from fuel-burning equipment at major stationary sources of nitrogen oxides 11/13/2023 2/26/2026, 91 FR 9455 Amended subsections (a)-(j) and (l); and added subsection (n).
22a-174-22f High daily NOX emitting units at non-major sources of NOX 11/13/2023 2/26/2026, 91 FR 9455 Amended subsection (e) by adding subdivision (5).
19-508-24 Connecticut Primary and Secondary Standards 10/08/1980 12/13/1985, 50 FR 50906
22a-174-24 Connecticut primary and secondary ambient air quality standards 4/2/2025 6/11/2026, 91 FR 35414 Addition of subdivision (3) to subsection (i) Connecticut primary and secondary ambient air quality standards for ozone.
19-508-25 Effective Date 04/04/1972 10/28/1972, 37 FR 23085
22a-174-27 Emission Standards and On-Board Diagnostic II Test Requirements for Periodic Motor Vehicle Inspection and Maintenance 08/10/2009 3/17/2015, 80 FR 13768 This SIP revision includes a change to exempt composite vehicles from tailpipe inspections. Revision to Section 22a-174-27 (b) and removal of Section 22a-174-27 (e).
22a-174-28 Oxygenated Gasoline 04/15/2014 06/24/2015, 80 FR 36242 Amendment of subdivision (a)(5) Control period.
22a-174-30a Stage I Vapor Recovery 07/08/2015 12/15/2017, 82 FR 59519 Replaces the repealed section 22a-174-30.
22a-174-32 Reasonably Available Control Technology for Volatile Organic Compounds 07/08/2015 12/15/2017, 82 FR 59519 Revises section (b)(3).
22a-174-33a Limit on Premises-wide Actual Emissions Below 50% of Title V Thresholds 09/24/2020 03/11/2022, 87 FR 13936
22a-174-33b Limit on Premises-wide Actual Emissions Below 80% of Title V Thresholds 09/24/2020 03/11/2022, 87 FR 13936 Approved with the exception of section (d)(6) which Connecticut withdrew from its SIP submittal.
22a-174-36 Low Emission Vehicles 01/29/1999 08/16/1999, 64 FR 44411 Section 22a-174-36(a) through 36(f) state effective 12/23/1994; Section 22a-174-36(g) state effective 01/29/1999.
22a-174-36b Low Emission Vehicles II Program 08/01/2013 07/15/2024, 89 FR 57361 Revises LEV II program, places end date on model year vehicles.
22a-174-36c (pdf) (141 KB) Low Emission Vehicles III program 08/01/2013 07/15/2024, 89 FR 57361 Adopts the LEV III regulation.
22a-174-38 Municipal Waste Combustors 08/02/2016 07/31/2017, 82 FR 35454 Portions of previously approved regulation were revised, primarily to incorporate tightened NOX emission limit for mass burn water-walled units.
22a-174-40 Consumer Products 10/05/2017 11/19/2018, 83 FR 58188 Minor correction published 12/04/2018 (83 FR 62466), clarifying that the effective date of the final rule is December 19, 2018.
22a-174-41 Architectural and Industrial Maintenance Products—phase 1 10/05/2017 11/19/2018, 83 FR 58188 Minor correction published 12/04/2018 (83 FR 62466), clarifying that the effective date of the final rule is December 19, 2018.
22a-174-41a Architectural and Industrial Maintenance Products—phase 2 10/05/2017 11/19/2018, 83 FR 58188 Minor correction published 12/04/2018 (83 FR 62466) clarifying that the effective date of the final rule is December 19, 2018.
22a-174-44 Adhesives and sealants 4/2/2025 6/11/2026, 91 FR 35414 Amendment of subdivision (2) of subsection (e) Compliance procedures and test methods.
Connecticut General Statute. Title 1, Chapter 10, Section 1-85 Interest in conflict with discharge of duties 10/01/1989 06/03/2016, 81 FR 35636 Approves criteria for identifying a conflict of interest.
Connecticut General Statute. Title 16a, Chapter 296, Section 16a-21a Sulfur content of home heating oil and off-road diesel fuel. Suspension of requirements for emergency. Enforcement 07/01/2015 08/01/2018, 83 FR 37437 Allowable sulfur content of fuels provided. Criteria for suspension of requirements and for enforcement identified.
Connecticut General Statute. Title 22a, Chapter 446c, Section 22a-171 Duties of Commissioner of Energy and Environmental Protection 10/01/1984 06/03/2016, 81 FR 35636 Identifies obligations and activities of the Commissioner.
Connecticut General Statute. Title 22a, Chapter 446c, Section 22a-174(f) Open Burning 03/30/2000 09/01/2016, 81 FR 60274 Approves criteria for open burning and process for certifying local open-burning officials.
Connecticut Public Act No. 13-120 An act concerning gasoline vapor recovery systems 06/18/2013 12/15/2017, 82 FR 59519 Revises section 22a-174e of the Connecticut General Statutes to require decommissioning of Stage II Vapor Recovery Systems.
(d) EPA-approved State source-specific requirements.
EPA-Approved Connecticut Source-Specific Requirements
Name of source Permit No. State effective date EPA approval date Explanations
Sikorsky Aircraft Division of United Technologies Corp Letter dated May 19, 1982 3/9/1982 11/12/1982, 47 FR 51129 Includes Order No. 7003A.
Lydall & Foulds Division of Lydall, Inc Letter dated January 5, 1983 10/13/1982 5/4/1983, 48 FR 20051 Allows variance per Sulfur Energy Trade Program.
Simkins Industries Letter dated July 19, 1983 12/14/1982 6/28/1983, 48 FR 29689 Allows variance per Sulfur Energy Trade Program.
Loomis Institute Letter dated July 13, 1983 5/24/1983 12/20/1983, 48 FR 56218 Allows variance per Sulfur Energy Trade Program.
Connecticut Charcoal Company Order No. 943 5/28/1986 11/20/1986, 51 FR 41963
King Industries Order No. 944 4/23/1986 2/19/1987, 52 FR 5104
Belding Corticelli Thread Company Order No. 8007 8/8/1987 12/17/1987, 52 FR 47925
Raymark Industries, Inc Order No. 8013 9/24/1987 4/11/1988, 53 FR 11847 Includes Compliance Timetable.
American Cyanamid Company Order No. 8012 1/6/1988 8/1/1988, 53 FR 28884 Includes Compliance Timetable.
Spongex International, Ltd Order No. 8008 8/21/1987 7/12/1988, 53 FR 26256 Includes Compliance Timetable.
General Motors Corporation Order No. 8023 7/8/1988 3/24/1989, 54 FR 12193 Includes Compliance Timetable.
Frismar, Inc Order No. 8001 10/20/1987 11/28/1989, 54 FR 48885 Includes Compliance Timetable.
Stanadyne, Inc Order No. 8018 1/3/1989 4/10/1989, 54 FR 14226 Includes Compliance Timetable.
Hamilton Standard Division of United Technologies Corp Order No. 8029 11/29/1989 3/12/1990, 55 FR 9121 Includes Compliance Timetable.
Stone Connecticut Paperboard Corporation Order No. 1073B 2/25/1992 11/20/1992, 57 FR 54703
Hartford Hospital Order No. 7016A 2/5/1992 11/20/1992, 57 FR 54703 Includes Compliance Timetable.
Connecticut Light and Power Company Order No. 7017 2/25/1991 3/24/1992, 57 FR 10139 Includes Compliance Timetable.
United Technologies Corporation Order No. 7019 2/19/1993 1/18/1994, 59 FR 2530
City of New Haven Order No. 8073 9/24/1993 9/11/1995, 60 FR 47076
Waterfront Enterprises, Inc Order No. 8074 11/5/1993 9/11/1995, 60 FR 47076
Laydon Construction Order No. 8075 9/21/1993 9/11/1995, 60 FR 47076
United Illuminating Company Order No. 8076 12/2/1993 9/11/1995, 60 FR 47076
M.J. Metals, Inc Order No. 8076c 6/18/1993 9/11/1995, 60 FR 47076
New Haven Terminal, Inc Order No. 8078 11/15/1993 9/11/1995, 60 FR 47076
Yankee Gas Services Company Order No. 8079 9/24/1993 9/11/1995, 60 FR 47076
United Illuminating Company Trading Agreement and Order No. 8092 5/18/1995 10/6/1997, 62 FR 52016
American Ref-Fuel Company of Southeastern Connecticut Trading Agreement and Order No. 8095 6/2/1995 10/6/1997, 62 FR 52016
Pfizer, Inc Trading Agreement and Order No. 8093 7/19/1995 10/6/1997, 62 FR 52016
Connecticut Light and Power Company Trading Agreement and Order No. 8096 10/10/1995 10/6/1997, 62 FR 52016
Northeast Nuclear Energy Company Trading Agreement and Order No. 8106 10/13/1995 10/6/1997, 62 FR 52016
Northeast Nuclear Energy Company Trading Agreement and Order No. 8107 10/13/1995 10/6/1997, 62 FR 52016
General Dynamics Corporation, Electric Boat Division Trading Agreement and Order No. 8105 10/31/1995 10/6/1997, 62 FR 52016
Bridgeport Resco Company, Limited Partnership Trading Agreement and Order No. 8100 11/2/1995 10/6/1997, 62 FR 52016
United Illuminating Company Trading Agreement and Order No. 8102 12/15/1995 10/6/1997, 62 FR 52016
United Illuminating Company Trading Agreement and Order No. 8103 2/14/1996 10/6/1997, 62 FR 52016
City of Norwich Department of Public Utilities Trading Agreement and Order No. 8119 3/4/1996 10/6/1997, 62 FR 52016
South Norwalk Electric Works Trading Agreement and Order No. 8118 3/19/1996 10/6/1997, 62 FR 52016
State of Connecticut Department of Mental Health and Addiction Services Trading Agreement and Order No. 8101 7/16/1996 10/6/1997, 62 FR 52016
Yale University Trading Agreement and Order No. 8110 7/29/1996 10/6/1997, 62 FR 52016
Bridgeport Hospital Trading Agreement and Order No. 8132 9/10/1996 10/6/1997, 62 FR 52016
Connecticut Light and Power Company Order No. 1494 10/15/1996 10/6/1997, 62 FR 52016
State of Connecticut Department of Public Works Trading Agreement and Order No. 8130 10/18/1996 10/6/1997, 62 FR 52016
University of Connecticut Trading Agreement and Order No. 8115 11/19/1996 10/6/1997, 62 FR 52016
Simkins Industries Trading Agreement and Order No. 8113 11/19/1996 10/6/1997, 62 FR 52016
Bridgeport Hydraulic Company Trading Agreement and Order No. 8135 12/24/1996 10/6/1997, 62 FR 52016
Town of Wallingford Department of Public Utilities Trading Agreement and Order No. 8141 12/27/1996 10/6/1997, 62 FR 52016
Algonquin Gas Transmission Company Trading Agreement and Order No. 8123 4/18/1997 10/6/1997, 62 FR 52016
Connecticut Resources Recovery Authority Trading Agreement and Order No. 8116 4/221997 10/6/1997, 62 FR 52016
Risdon Corporation Order No. 8036 5/6/1996 4/24/1998, 63 FR 20315
AlliedSignal, Inc. and U.S. Army Tank-Automotive and Armaments Command Trading Agreement and Order No. 8137 11/19/1996 9/28/1999, 64 FR 52233
Connecticut Natural Gas Corporation Trading Agreement and Order No. 8138 11/19/1996 9/28/1999, 64 FR 52233
Cytec Industries, Inc Trading Agreement and Order No. 8114 12/20/1996 9/28/1999, 64 FR 52233
CTG Resources, Inc. (Formerly The Connecticut Natural Gas Company) Trading Agreement and Order No. 8138 Modification 6/25/1997 9/28/1999, 64 FR 52233
AlliedSignal, Inc. and U.S. Army Tank-Automotive and Armaments Command Trading Agreement and Order No. 8137 Modification 7/8/1997 9/28/1999, 64 FR 52233
Ogden Martin Systems of Bristol, Inc Trading Agreement and Order No. 8094 7/23/1997 9/28/1999, 64 FR 52233
Wisvest-Connecticut, LLC Trading Agreement and Order No. 8177 5/31/2000 3/23/2001, 66 FR 16135
Wisvest-Connecticut, LLC Trading Agreement and Order No. 8187 1/12/2000 3/23/2001, 66 FR 16135
Ogden Martin Systems of Bristol, Inc Trading Agreement and Order No. 8094 Modification 2 5/22/2000 3/23/2001, 66 FR 16135
American Ref-Fuel Company of Southeastern Connecticut Trading Agreement and Order No. 8095 Modification 2 5/22/2000 3/23/2001, 66 FR 16135
Bridgeport Resco Company, Limited Partnership Trading Agreement and Order No. 8100 Modification 2 5/22/2000 3/23/2001, 66 FR 16135
Connecticut Resources Recovery Authority Trading Agreement and Order No. 8116 Modification 2 5/22/2000 3/23/2001, 66 FR 16135
Wisvest-Connecticut, LLC Trading Agreement and Order No. 8178 5/22/2000 3/23/2001, 66 FR 16135
Wisvest-Connecticut, LLC Trading Agreement and Order No. 8179 5/22/2000 3/23/2001, 66 FR 16135
Wisvest-Connecticut, LLC Trading Agreement and Order No. 8176 5/31/2000 3/23/2001, 66 FR 16135
Hitchcock Chair Company, Ltd Order No. 8229A 4/15/2002 10/24/2005, 70 FR 61384
Kimberly-Clark Corporation Order No. 8190 4/23/2002 10/24/2005, 70 FR 61384
Ross & Roberts, Inc Order No. 8237 10/4/2002 10/24/2005, 70 FR 61384
Sumitomo Bakelite North America, Inc Order No. 8245 10/11/2006 6/27/2013, 78 FR 38587
Cyro Industries Order No. 8268 2/28/2007 6/27/2013, 78 FR 38587
Curtis Packaging Corporation Order No. 8270 5/1/2007 6/27/2013, 78 FR 38587
PSEG Power Connecticut LLC (formerly Wisvest Connecticut LLC) Trading Agreement and Order No. 8187 Modification 1 7/16/2012 8/3/2015, 80 FR 45887
PSEG Power Connecticut LLC Trading Agreement and Order No. 8242 Modification 1 7/16/2012 8/3/2015, 80 FR 45887
Mallace Industries Corporation Order No. 8258 9/13/2005 5/1/2017, 82 FR 20262
Hamilton Sundstrand Order No. 8029A 9/3/2009 5/1/2017, 82 FR 20262
Middletown Power LLC, Montville Power LLC, Connecticut Jet Power LLC, and Devon Power LLC Consent Order No. 8377, Modification 1 5/3/2022 6/28/2022, 87 FR 38284 General Bridge Acquisition LLC purchased the collective sources referred to as “NRG Connecticut” in past references for Consent Order 8377.
Thames Shipyard & Repair Company Consent Order No. 8381 12/3/2021 7/24/2025, 90 FR 34768 EPA action also removed from the SIP: Dow Chemical U.S.A. Order # 7002B and Pratt & Whitney Order # 8027.
(e) Nonregulatory.
Connecticut Non Regulatory
Name of non-regulatory SIP provision Applicable geographic or nonattainment area State submittal date/ effective date EPA approved date Explanations
Miscellaneous non-regulatory addition to the plan and addition of amendment to Chapter 360 of General Statutes which provides authority for delegation of enforcement authority submitted on March 21, 1972, by the Connecticut Department of Environmental Protection 3/21/1972 5/31/1972, 37 FR 10842
Miscellaneous non-regulatory additions to the plan submitted on April 6, 1972, by the Connecticut Department of Environmental Protection 4/6/1972 5/31/1972, 37 FR 10842
Attainment dates submitted on August 10, 1972 by CT DEP 8/10/1972 5/14/1973, 38 FR 12696
Non-regulatory additions to the plan which were submitted on December 19, 1980, and amended on March 11, 1981, by CT DEP 12/19/1980 and 3/11/1981 8/28/1981, 46 FR 43418 Amending the sulfur control strategy to include an “Air Pollution Control/Energy Trade Option” except for submittal attachments #1 and #2, “Sulfur Dioxide” and “Transport of Sulfur Dioxide” and the section of attachment #3 “Control of Sulfur Oxides” entitled “Sample Analysis of a Btu Bubble Application”.
Non-regulatory addition to the plan of the state New Source Ambient Impact Analysis Guideline 12/19/1980; 3/11/1981; and 7/15/1981 8/28/1981, 46 FR 43418 For use in state program actions, submitted on December 19, 1980 and amended on March 11, 1981 and July 15, 1981.
Source Test Guidelines and Procedures; and Workshop Manual for Gasoline Tank Truck Certification 7/18/1985, 50 FR 29229 Includes Appendix B of Control of Volatile Organic Compound Leaks from Gasoline Tank Trucks and Vapor Collection Systems EPA-450/2-78-051.
Letter dated May 16, 1985 certifying the meaning of an “Acceptable Method” 5/16/1985 12/13/1985, 50 FR 50906 Interpreted to mean that any monitoring method used to collect ambient air pollution data used for attainment status evaluation or designation must be approved by EPA.
Technical Support Document prepared by CT DEP 4/11/1988, 53 FR 11847 Provides complete description of the reasonably available control technology determination imposed on Raymark Industries.
Letter from CT DEP dated July 3, 1986 7/3/1986 5/19/1988, 53 FR 17934 Commits CT DEP to use only EPA approved test methods when requiring the testing of sources emitting volatile organic compound emissions.
Letter from CT DEP dated May 29, 1987 5/29/1987 5/19/1988 Certifies that there are no polypropylene or high-density polyethylene manufacturers in the State of Connecticut.
Technical Support Document prepared by CT DEP 7/12/1988, 53 FR 26256 Provides complete description of the reasonably available control technology determination imposed on Spongex International, Ltd.
Technical Support Document prepared by CT DEP 8/1/1988, 53 FR 28884 Provides complete description of the reasonably available control technology determination imposed on American Cyanamid Co.
Technical Support Document prepared by CT DEP 3/24/1989, 54 FR 12193 Provides complete description of the reasonably available control technology determination imposed on New Departure Hyatt.
Technical Support Document prepared by CT DEP 4/10/1989, 54 FR 14226 Provides complete description of the reasonably available control technology determination imposed on Stanadyne, Inc.
Technical Support Document prepared by CT DEP 5/30/1989, 54 FR 22891 Provides complete description of the reasonably available control technology determination imposed on Pratt and Whitney's East Hartford facility.
Technical Support Document prepared by CT DEP 11/28/1989, 54 FR 48885 Provides complete description of the reasonably available control technology determination imposed on Frismar, Inc.
Technical Support Document prepared by CT DEP 3/12/1990, 55 FR 9121 Provides complete description of the reasonably available control technology determination imposed on Hamilton Standard.
Memorandum dated September 14, 1990 approving modeling analysis for Connecticut Light and Power 9/14/1990 3/24/1992, 57 FR 10139
Letter dated April 3, 1991 confirming that the revised configuration approved by State Order No. 7017 will not lead to violations 4/3/1991 3/24/1992, 57 FR 10139
Modeling Study dated January 26, 1990 for Connecticut Light and Power 1/28/1990 3/24/1992, 57 FR 10139
Memorandum dated August 17, 1989 approving modeling analysis for Stone Container Co 8/17/1989 11/20/1992, 57 FR 54703
Modeling Study dated August 9, 1989 for Stone Container Co 8/9/1989 11/20/1992, 57 FR 54703
State Order No 1073A, effective July 9, 1990 7/9/1990 11/20/1992, 57 FR 54703
Memorandum dated January 3, 1990 approving modeling analysis for Hartford Hospital 1/3/1990 11/20/1992, 57 FR 54703
Modeling Study dated December 28, 1989 for Hartford Hospital 12/28/1989 11/20/1992, 57 FR 54703
SIP narrative entitled “New Source Review” 2/23/1993, 56 FR 10957
Letter from CT DEP regarding implementation of BACT 2/23/1993, 56 FR 10957
Narrative of SIP Revision: Stage II Vapor Recovery January 1993 12/17/1993, 58 FR 65930
Air Quality Modeling Analysis to Demonstrate SO2 CAAQS/NAAQS Compliance June 1991 1/18/1994, 59 FR 2530 Relates to Hamilton Standard Division of United Technologies Corporation.
Letter from CT DEP dated April 6, 1994 clarifying the January 12, 1993 submittal 4/6/1994 5/19/1994, 59 FR 26123
An attainment plan and demonstration which outlines Connecticut's control strategy and for attainment and maintenance of the PM10 NAAQS 9/11/1995, 60 FR 47076 Implements and meets RACM and RACT requirements, and provides contingency measures for New Haven.
Letter dated June 18, 1996 from CT DEP and SIP narratives for various Source Orders 6/18/1996 10/6/1997, 62 FR 52016 SIP narratives for Order Nos. 8092, 8095, 8093, 8096, 8106, 8107, 8105, 8100, and others.
Letter from CT DEP dated June 27, 1994 clarifying language in sec 22a-174-32(A) 6/27/1994 3/10/1999, 64 FR 12019
Letters from CT DEP dated June 24, 1998 and November 13, 1998 submitting CT SIP revisions 6/24/1998 and 11/13/1998 3/10/1999, 64 FR 12005
Nonregulatory portions of submittals and Policy materials concerning the use of emission credits from New Jersey at Connecticut sources 7/11/1997, 9/12/1997, and 12/8/1997 9/28/1999, 64 FR 52233
Letter from CT DEP dated October 7, 1999 submitting a revision to the CT SIP 10/7/1999 12/1/1999, 64 FR 67188
Letter from CT DEP dated February 7, 1996 submitting a revision to the CT SIP for the Low Emission Vehicle Program 2/7/1996 3/9/2000, 65 FR 12476
Letter from CT DEP dated February 18, 1999 submitting a revision to the CT SIP 2/7/1996 3/9/2000, 65 FR 12476 Request for the National Low Emission Vehicle program to be a compliance option under the State's Low Emission Vehicle Program.
Letters from CT DEP dated April 15, 1997, April 20, 1998, and September 2, 1999 submitting revisions to the CT SIP 4/15/1997, 4/20/1998, and 9/2/199 10/19/2000, 65 FR 62620
Letter from CT DEP dated November 19, 1999 submitting a revision to the CT SIP 11/19/1999 10/27/2000, 65 FR 64357
Narrative portion of the SIP revision for Enhanced Motor Vehicle Inspection and Maintenance Program 10/7/1999 10/27/2000, 65 FR 64357
Letter from CT DEP dated September 30, 1999 submitting a revision to the CT SIP 9/30/1999 12/27/2000, 65 FR 81743 Contains RCSA section 22a-174-22b and associated administrative materials.
SIP Narrative dated September 30, 1999 for CT SIP revision 9/30/1999 12/27/2000, 65 FR 81743 SIP revision to implement the NOX SIP Call.
Letter from CT DEP dated May 19, 2000 submitting a revision to the CT SIP 5/19/2000 3/23/2001, 66 FR 16135
SIP narrative materials December 1999 3/23/2001, 66 FR 16135 Submitted with Source Order Nos. 8176, 8177, 8178, 8179, and 8187.
Letter from CT DEP dated October 15, 2001 submitting a revision to the CT SIP 10/15/2001 12/6/2001, 66 FR 63311
Letter from CT DEP dated June 14, 2002 submitting a revision to the CT SIP 6/14/2002 2/27/2003, 68 FR 9009
Pressure Vacuum Vent Cap Test Procedures 8/31/2006, 71 FR 51765
Table 1 showing the emission reductions resulting form the measures Connecticut adopted to meet the shortfall identified in the Connecticut on-hour ozone attainment demonstration 8/31/2006, 71 FR 51765
Connecticut Regional Haze SIP Revision Nov. 2009 7/10/14, 79 FR 39322
Letter from CT DEEP dated March 12, 2012 3/12/2012 7/10/14, 79 FR 39322 Clarification of Connecticut's 2008 PM2.5 Attainment Demonstration.
Letter from CT DEEP dated February 24, 2012 regarding Regional Haze SIP 2/24/2012 7/10/14, 79 FR 39322
Letter from CT DEEP dated November 23, 2012 11/23/2012 7/10/14, 79 FR 39322 Withdrawal of Request for Parallel Processing.
Letter from CT DEEP dated January 14, 2013, entitled “Information to Support EPA's Approval of Connecticut's Requirements for Opacity” 1/14/2013 7/16/14, 79 FR 41436
Letter from CT DEEP dated July 8, 2013 7/8/2013 7/16/14, 79 FR 41436 Withdrawing from CT DEEP's December 1, 2004 SIP revision the phrase “and malfunction” from Subsection (j)(1) of RCSA Section 22a-174-18.
Letter from CT DEEP dated March 27, 2014 3/27/2014 7/16/14, 79 FR 41436 Withdrawing from CT DEEP's December 1, 2004 SIP revision section 22a-174-18(j)(2).
Adequacy Determination of the Connecticut SIP with Regard to CAA Section 110(a)(1) and (2) for the 8-Hr Ozone NAAQS Program Infrastructure 12/28/2007 6/3/16, 81 FR 35639
Adequacy Determination of the Connecticut SIP with Regard to CAA Section 110(a) Infrastructure Elements: 1997 PM2.5 NAAQS 9/4/2008 6/3/16, 81 FR 35639
Adequacy Determination of the Connecticut SIP with Regard to CAA Section 110(a)(1) and (2) for 2006 PM2.5 NAAQS 9/18/2009 6/3/16, 81 FR 35639
CT DEEP document dated January 7, 2011 1/7/2011 6/3/16, 81 FR 35639 Request to withdraw a portion of Connecticut's PM2.5 Infrastructure Adequacy Determination.
Addendum to the CAA section 110(a)(2)(D)(i)(I) Portion of Connecticut's Infrastructure Submittal for the 2006 PM2.5 NAAQS 8/19/2011 6/3/16, 81 FR 35639
Adequacy Determination of the CT SIP with Regard to CAA section 110(a)(1) and (2) for the 2008 Lead NAAQS 10/13/2011 6/3/16, 81 FR 35639
Update to Connecticut PM2.5 Infrastructure submittal 6/15/2012 6/3/16, 81 FR 35639
CT SIP with Regard to the Infrastructure Requirements of CAA section 110(a)(1) and (2) for the 2008 Ozone NAAQS 12/28/2012 6/3/16, 81 FR 35639
CT SIP with Regard to the Infrastructure Requirements of CAA section 110(a)(1) and (2) for the 2010 Nitrogen Dioxide NAAQS 1/2/2013 6/3/16, 81 FR 35639
Connecticut SIP for CAA Section 110(a) Infrastructure Elements: 2010 Sulfur Dioxide NAAQS 5/30/2013 6/3/16, 81 FR 35639
Supplement to Infrastructure SIP Revisions 8/5/2015 6/3/16, 81 FR 35639
Letter from CT DEEP dated September 14, 2015, submitting a revision to the SIP 9/14/2015 12/15/17, 82 FR 59519
Addendum to the CAA § 110(a)(2)(D)(i)(I) Portion of Connecticut's Infrastructure Submittal for the 2006 PM2.5 NAAQS 8/19/2011 8/1/18, 83 FR 37437
Infrastructure SIP for the 2012 PM2.5 NAAQS 12/14/2015 8/1/18, 83 FR 37437
Letter from CT DEEP dated October 18, 2017, submitting a revision to the SIP 10/18/2017 8/1/18, 83 FR 37437 SIP revision concerning Consumer Products, Architectural and Industrial Maintenance Coatings and Prevention of Significant Deterioration Permit Programs.
Regional Haze 5-Yr Progress Report 7/8/2015 11/26/19, 84 FR 65007
Good Neighbor SIP for the 2008 Ozone NAAQS 6/11/2015 2/14/20, 85 FR 8406
Infrastructure SIP submittal for 2015 Ozone NAAQS 9/7/2018 8/19/20, 85 FR 50953
Good Neighbor SIP for the 2015 Ozone NAAQS 12/6/2018 12/20/21, 86 FR 71830
Letter from CT DEEP dated October 26, 2020, submitting a revision to the SIP 10/26/2020 3/11/22, 87 FR 13936 Letter from CT DEEP dated January 12, 2022 withdrawing regulation section 22a-174-33b(d)(6) from the SIP revision.
Letters from CT DEEP dated December 15, 2020 and February 14, 2023, submitting a revision to the SIP 12/15/2020 9/5/23, 88 FR 60591 SIP revision concerning the New Source Review Permit Program Update.
Letter from CT DEEP dated November 30, 2023, submitting a revision to the SIP 11/30/2023 2/12/24, 89 FR 9771 SIP revision concerning the Definition of Severe non-Attainment Area for Ozone.
Regional Haze plan for Second Implementation Period (2018-2028) 1/5/2022 9/17/24, 89 FR 75973
Second 10-year Limited Maintenance Plan for Connecticut's PM2.5 Maintenance Area 5/9/2023 11/15/2024, 89 FR 90230
Attainment Plan SIP elements for Connecticut's Serious Nonattainment area under the 2008 Ozone NAAQS 6/23/2022 4/1/2025, 90 FR 14341 Pertains to requirements for Reasonable Further Progress (RFP), enhanced motor vehicle inspection and maintenance (I/M) program, motor vehicle emission budgets for transportation conformity, and a clean fuels for motor vehicles program.
Letter from CT DEEP dated May 22, 2023, submitting a revision to the SIP 5/22/2023 4/22/25, 90 FR 16814 SIP revision concerning New Source Review certification for the Greater CT Moderate Nonattainment area under the 2015 Ozone NAAQS and an Emission Statement certification for both the Greater CT and the Southwest CT Moderate Nonattainment areas under the 2015 Ozone NAAQS.
Letter from CT DEEP dated May 3, 2024, submitting a revision to the SIP 5/3/2024 7/16/25, 90 FR 31881 SIP revision concerning a 2017 Base Year Emissions Inventory for the 2015 Ozone NAAQS. Submittal also includes 2014 and 2017 Periodic Emission Inventories for the 2008 Ozone NAAQS, approved under separate action.

Where this section sits in the code

Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER C—AIR PROGRAMS
PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS
Subpart H—Connecticut

(b) Incorporation by reference. (1) Material listed in paragraphs (c) and (d) of this section with an EPA approval date prior to August 25, 2025, was approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Material is incorporated as it exists on the date of the approval and notification of any change in the material will be published in the Federal Register. Entries in paragraphs (c) and (d) of this section with EPA approval dates after August 25, 2025, will be incorporated by reference in the next update to the SIP compilation.

(2) EPA Region 1 certifies that the rules/regulations provided by EPA in the SIP compilation at the addresses in paragraph (b)(3) of this section are an exact duplicate of the officially promulgated State rules/regulations which have been approved as part of the State implementation plan as of the dates referenced in paragraph (b)(1) of this section.

(3) Copies of the materials incorporated by reference may be inspected at the Region 1 EPA Office at 5 Post Office Square—Suite 100, Boston, MA 02109. To obtain the material, please call the EPA Region 1 Office. You may also inspect the material with an EPA approval date prior to August 25, 2025, at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations or email fr.inspection@nara.gov.

EPA-Approved Connecticut Regulations and Statutes

State citation Title/subject State effective date EPA approval date Explanations

14-164c Periodic Motor Vehicle Emissions Inspection and Maintenance 05/28/2004 12/05/2008, 73 FR 74019 DMV regulation revisions for test and repair network and implementing OBD2 and other tests.

22a-171 Duties of Commissioner of Environmental Protection 01/12/1993 05/19/1994, 59 FR 26123 Associated with the Small Business Stationary Source Technical and Environmental Compliance Assistance Program.

22a-174-1 Definitions 11/13/2023 02/12/2024, 89 FR 9771 Modified definition of “severe non-attainment area for ozone.”

Note: Definitions which have been Incorporated By Reference into the Connecticut State Implementation Plan are numbered consecutively above by EPA, and do not necessarily correspond to the State's assigned definition number in the Connecticut State Regulation. It is Connecticut's practice to renumber their definitions in Section 22a-174-1 when definitions are added or deleted from the State Regulation.

22a-174-2a Procedural Requirements for New Source Review and Title V Permitting 11/18/2020 09/05/2023, 88 FR 60591 Revisions made to 22a-174-2a(c)(3), 22a-174-2a(d)(9), 22a-174-2a(e)(3)(C), 22a-174-2a(e)(3)(E), 22a-174-2a(e)(7), 22a-174-2a(f)(2), and 22a-174-2a(f)(2)(G).

22a-174-3a Permit to construct and operate stationary sources 3/14/2024 4/2/2026, 91 FR 16556 This revision adds 22a-174-3a(a)(2)(C)(ii), 22a-174-3a(l)(1)(B), and 22a-174-3a(l)(1)(C) to update and correct citations to EPA rules; clarifications to the applicability of nonattainment New Source Review for new major sources and major modifications at existing major sources.

22a-174-3b Permits for Construction and Operation of Stationary Sources 04/04/2006 08/31/2006, 71 FR 51761 Only the automotive refinishing requirements of 22a-174-3b are being approved. Connecticut did not submit the other subsections of the rule as part of its SIP revision.

22a-174-4a Source monitoring, record keeping and reporting 10/28/2022 07/08/2024, 89 FR 55888 Replaces 22a-174-4.

22a-174-5 Methods for Sampling, Emission Testing, and Reporting 12/19/1980 04/15/2014 08/28/1981, 46 FR 43418 05/25/2016, 81 FR 33134

19-508-6 Air Pollution Emergency Episode Procedures 08/31/1979 12/23/1980, 45 FR 84769

22a-174-7 Air Pollution Control Equipment and Monitoring Equipment Operation 04/01/2004 07/16/2014, 79 FR 41427

19-508-8, 22a-174-8 Compliance Plan and Schedules 12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.

19-508-9 Prohibition of Air Pollution 08/31/1979 08/12/1983, 48 FR 36579

19-508-10 Public Availability of Information 04/04/1972 10/28/1972, 37 FR 23085

19-508-11 Prohibition Against Concealment or Circumvention 04/04/1972 10/28/1972, 37 FR 23085

19-508-12 Violations and Enforcement 04/04/1972 10/28/1972, 37 FR 23085

19-508-13 Variances 08/31/1979 12/23/1980, 45 FR 84769

19-508-14 Compliance with Regulation No Defense to Nuisance Claim 04/04/1972 05/31/1972, 37 FR 10842

19-508-15 Severability 04/04/1972 05/31/1972, 37 FR 10842

19-508-16 Responsibility to Comply with Applicable Regulations 04/04/1972 05/31/1972, 37 FR 10842

19-508-18 Control of Particulate Emissions 07/11/1981 09/23/1982, 47 FR 41958

22a-174-18 Control of Particulate Matter and Visible Emissions 04/01/2004 07/16/2014, 79 FR 41427 All of Section 22a-174-18 is approved, with the exception of the phrase “or malfunction” in Section 22a-174-18(j)(1) and all of Section 22a-174-18(j)(2), which CT DEEP withdrew from the SIP submittal. Because Connecticut withdrew Section 22a-174-18(j)(2) from its SIP submission, stationary sources subject to a Federal NSPS will remain subject to the opacity limits contained in “Control of Particulate Emissions” under the SIP (See 37 FR 10842). See Section 19-508-18, “Control of Particulate Emissions” posted at www.epa.gov/sips-ct/epa-approved-regulations-connecticut-sip.

12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.

08/03/2018 10/29/2020, 85 FR 68472 Approval of revisions to subsections (c), (f), and (j).

22a-174-19 Control of Sulfur Compound Emissions 11/02/1981 04/15/2014 11/18/1981, 46 FR 56612 05/25/2016, 81 FR 33134

22a-174-19a Control of sulfur dioxide emissions from power plants and other large stationary sources of air pollution 12/28/2000 07/10/2014, 79 FR 39322 Approves the sulfur dioxide emission standards and fuel sulfur limits for units subject to the CT NOX Budget program. The following sections were not submitted as part of the SIP: Sections (a)(5); (a)(8); (a)(11); (d); (e)(4); (f); (g); (h); and in (i)(2) reference to (e)(4).

04/15/2014 05/25/2016, 81 FR 33134 Revises sections 22a-174-19a(e) and 22a-174-19a(i) and removes outdated section 22a-174-19a(c).

22a-174-19b Fuel Sulfur Content Limitations for Stationary Sources 04/15/2014 05/25/2016, 81 FR 33134 A new regulation which limits the sulfur content of liquid fuels used in stationary sources. Subsection (e) was not submitted by the State.

22a-174-20 Control of Organic Compound Emissions 10/28/2022 07/08/2024, 89 FR 55888 Amends 22a-174-20(a)(12).

19-508-21 Control of Carbon Monoxide Emissions 04/04/1972 10/28/1972, 37 FR 23085

22a-174-22 Control of Nitrogen Oxides Emissions 01/23/1997 12/28/2000 10/06/1997, 62 FR 52016 07/10/2014, 79 FR 39322 Amended by adding section (e)(3), which approves the Oct-April NOX emission limits for units subject to the CT NOX Budget program.

22a-174-22a Nitrogen Oxides (NOX) Budget Program 03/03/1999 09/28/1999, 64 FR 52233

09/04/2007 01/24/2008, 73 FR 4105 Repealed as of January 24, 2008. Superseded by CAIR (22a-174-22c).

22a-174-22b Post-2002 Nitrogen Oxides (NOX) Budget Program 09/29/1999 12/27/2000, 65 FR 81743

09/04/2007 01/24/2008, 73 FR 4105 Repealed as of May 1, 2010. Superseded by CAIR (22a-174-22c).

22a-174-22c The Clean Air Interstate Rule (CAIR) Nitrogen Oxides (NOX) Ozone Season Trading Program 12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.

22a-174-22e Control of nitrogen oxides emissions from fuel-burning equipment at major stationary sources of nitrogen oxides 11/13/2023 2/26/2026, 91 FR 9455 Amended subsections (a)-(j) and (l); and added subsection (n).

22a-174-22f High daily NOX emitting units at non-major sources of NOX 11/13/2023 2/26/2026, 91 FR 9455 Amended subsection (e) by adding subdivision (5).

19-508-24 Connecticut Primary and Secondary Standards 10/08/1980 12/13/1985, 50 FR 50906

22a-174-24 Connecticut primary and secondary ambient air quality standards 4/2/2025 6/11/2026, 91 FR 35414 Addition of subdivision (3) to subsection (i) Connecticut primary and secondary ambient air quality standards for ozone.

19-508-25 Effective Date 04/04/1972 10/28/1972, 37 FR 23085

22a-174-27 Emission Standards and On-Board Diagnostic II Test Requirements for Periodic Motor Vehicle Inspection and Maintenance 08/10/2009 3/17/2015, 80 FR 13768 This SIP revision includes a change to exempt composite vehicles from tailpipe inspections. Revision to Section 22a-174-27 (b) and removal of Section 22a-174-27 (e).

22a-174-28 Oxygenated Gasoline 04/15/2014 06/24/2015, 80 FR 36242 Amendment of subdivision (a)(5) Control period.

22a-174-30a Stage I Vapor Recovery 07/08/2015 12/15/2017, 82 FR 59519 Replaces the repealed section 22a-174-30.

22a-174-32 Reasonably Available Control Technology for Volatile Organic Compounds 07/08/2015 12/15/2017, 82 FR 59519 Revises section (b)(3).

22a-174-33a Limit on Premises-wide Actual Emissions Below 50% of Title V Thresholds 09/24/2020 03/11/2022, 87 FR 13936

22a-174-33b Limit on Premises-wide Actual Emissions Below 80% of Title V Thresholds 09/24/2020 03/11/2022, 87 FR 13936 Approved with the exception of section (d)(6) which Connecticut withdrew from its SIP submittal.

22a-174-36 Low Emission Vehicles 01/29/1999 08/16/1999, 64 FR 44411 Section 22a-174-36(a) through 36(f) state effective 12/23/1994; Section 22a-174-36(g) state effective 01/29/1999.

22a-174-36b Low Emission Vehicles II Program 08/01/2013 07/15/2024, 89 FR 57361 Revises LEV II program, places end date on model year vehicles.

22a-174-36c (pdf) (141 KB) Low Emission Vehicles III program 08/01/2013 07/15/2024, 89 FR 57361 Adopts the LEV III regulation.

22a-174-38 Municipal Waste Combustors 08/02/2016 07/31/2017, 82 FR 35454 Portions of previously approved regulation were revised, primarily to incorporate tightened NOX emission limit for mass burn water-walled units.

22a-174-40 Consumer Products 10/05/2017 11/19/2018, 83 FR 58188 Minor correction published 12/04/2018 (83 FR 62466), clarifying that the effective date of the final rule is December 19, 2018.

22a-174-41 Architectural and Industrial Maintenance Products—phase 1 10/05/2017 11/19/2018, 83 FR 58188 Minor correction published 12/04/2018 (83 FR 62466), clarifying that the effective date of the final rule is December 19, 2018.

22a-174-41a Architectural and Industrial Maintenance Products—phase 2 10/05/2017 11/19/2018, 83 FR 58188 Minor correction published 12/04/2018 (83 FR 62466) clarifying that the effective date of the final rule is December 19, 2018.

22a-174-44 Adhesives and sealants 4/2/2025 6/11/2026, 91 FR 35414 Amendment of subdivision (2) of subsection (e) Compliance procedures and test methods.

Connecticut General Statute. Title 1, Chapter 10, Section 1-85 Interest in conflict with discharge of duties 10/01/1989 06/03/2016, 81 FR 35636 Approves criteria for identifying a conflict of interest.

Connecticut General Statute. Title 16a, Chapter 296, Section 16a-21a Sulfur content of home heating oil and off-road diesel fuel. Suspension of requirements for emergency. Enforcement 07/01/2015 08/01/2018, 83 FR 37437 Allowable sulfur content of fuels provided. Criteria for suspension of requirements and for enforcement identified.

Connecticut General Statute. Title 22a, Chapter 446c, Section 22a-171 Duties of Commissioner of Energy and Environmental Protection 10/01/1984 06/03/2016, 81 FR 35636 Identifies obligations and activities of the Commissioner.

Connecticut General Statute. Title 22a, Chapter 446c, Section 22a-174(f) Open Burning 03/30/2000 09/01/2016, 81 FR 60274 Approves criteria for open burning and process for certifying local open-burning officials.

Connecticut Public Act No. 13-120 An act concerning gasoline vapor recovery systems 06/18/2013 12/15/2017, 82 FR 59519 Revises section 22a-174e of the Connecticut General Statutes to require decommissioning of Stage II Vapor Recovery Systems.

(d) EPA-approved State source-specific requirements.

EPA-Approved Connecticut Source-Specific Requirements

Name of source Permit No. State effective date EPA approval date Explanations

Sikorsky Aircraft Division of United Technologies Corp Letter dated May 19, 1982 3/9/1982 11/12/1982, 47 FR 51129 Includes Order No. 7003A.

Lydall & Foulds Division of Lydall, Inc Letter dated January 5, 1983 10/13/1982 5/4/1983, 48 FR 20051 Allows variance per Sulfur Energy Trade Program.

Simkins Industries Letter dated July 19, 1983 12/14/1982 6/28/1983, 48 FR 29689 Allows variance per Sulfur Energy Trade Program.

Loomis Institute Letter dated July 13, 1983 5/24/1983 12/20/1983, 48 FR 56218 Allows variance per Sulfur Energy Trade Program.

Connecticut Charcoal Company Order No. 943 5/28/1986 11/20/1986, 51 FR 41963

King Industries Order No. 944 4/23/1986 2/19/1987, 52 FR 5104

Belding Corticelli Thread Company Order No. 8007 8/8/1987 12/17/1987, 52 FR 47925

Raymark Industries, Inc Order No. 8013 9/24/1987 4/11/1988, 53 FR 11847 Includes Compliance Timetable.

American Cyanamid Company Order No. 8012 1/6/1988 8/1/1988, 53 FR 28884 Includes Compliance Timetable.

Spongex International, Ltd Order No. 8008 8/21/1987 7/12/1988, 53 FR 26256 Includes Compliance Timetable.

General Motors Corporation Order No. 8023 7/8/1988 3/24/1989, 54 FR 12193 Includes Compliance Timetable.

Frismar, Inc Order No. 8001 10/20/1987 11/28/1989, 54 FR 48885 Includes Compliance Timetable.

Stanadyne, Inc Order No. 8018 1/3/1989 4/10/1989, 54 FR 14226 Includes Compliance Timetable.

Hamilton Standard Division of United Technologies Corp Order No. 8029 11/29/1989 3/12/1990, 55 FR 9121 Includes Compliance Timetable.

Stone Connecticut Paperboard Corporation Order No. 1073B 2/25/1992 11/20/1992, 57 FR 54703

Hartford Hospital Order No. 7016A 2/5/1992 11/20/1992, 57 FR 54703 Includes Compliance Timetable.

Connecticut Light and Power Company Order No. 7017 2/25/1991 3/24/1992, 57 FR 10139 Includes Compliance Timetable.

United Technologies Corporation Order No. 7019 2/19/1993 1/18/1994, 59 FR 2530

City of New Haven Order No. 8073 9/24/1993 9/11/1995, 60 FR 47076

Waterfront Enterprises, Inc Order No. 8074 11/5/1993 9/11/1995, 60 FR 47076

Laydon Construction Order No. 8075 9/21/1993 9/11/1995, 60 FR 47076

United Illuminating Company Order No. 8076 12/2/1993 9/11/1995, 60 FR 47076

M.J. Metals, Inc Order No. 8076c 6/18/1993 9/11/1995, 60 FR 47076

New Haven Terminal, Inc Order No. 8078 11/15/1993 9/11/1995, 60 FR 47076

Yankee Gas Services Company Order No. 8079 9/24/1993 9/11/1995, 60 FR 47076

United Illuminating Company Trading Agreement and Order No. 8092 5/18/1995 10/6/1997, 62 FR 52016

American Ref-Fuel Company of Southeastern Connecticut Trading Agreement and Order No. 8095 6/2/1995 10/6/1997, 62 FR 52016

Pfizer, Inc Trading Agreement and Order No. 8093 7/19/1995 10/6/1997, 62 FR 52016

Connecticut Light and Power Company Trading Agreement and Order No. 8096 10/10/1995 10/6/1997, 62 FR 52016

Northeast Nuclear Energy Company Trading Agreement and Order No. 8106 10/13/1995 10/6/1997, 62 FR 52016

Northeast Nuclear Energy Company Trading Agreement and Order No. 8107 10/13/1995 10/6/1997, 62 FR 52016

General Dynamics Corporation, Electric Boat Division Trading Agreement and Order No. 8105 10/31/1995 10/6/1997, 62 FR 52016

Bridgeport Resco Company, Limited Partnership Trading Agreement and Order No. 8100 11/2/1995 10/6/1997, 62 FR 52016

United Illuminating Company Trading Agreement and Order No. 8102 12/15/1995 10/6/1997, 62 FR 52016

United Illuminating Company Trading Agreement and Order No. 8103 2/14/1996 10/6/1997, 62 FR 52016

City of Norwich Department of Public Utilities Trading Agreement and Order No. 8119 3/4/1996 10/6/1997, 62 FR 52016

South Norwalk Electric Works Trading Agreement and Order No. 8118 3/19/1996 10/6/1997, 62 FR 52016

State of Connecticut Department of Mental Health and Addiction Services Trading Agreement and Order No. 8101 7/16/1996 10/6/1997, 62 FR 52016

Yale University Trading Agreement and Order No. 8110 7/29/1996 10/6/1997, 62 FR 52016

Bridgeport Hospital Trading Agreement and Order No. 8132 9/10/1996 10/6/1997, 62 FR 52016

Connecticut Light and Power Company Order No. 1494 10/15/1996 10/6/1997, 62 FR 52016

State of Connecticut Department of Public Works Trading Agreement and Order No. 8130 10/18/1996 10/6/1997, 62 FR 52016

University of Connecticut Trading Agreement and Order No. 8115 11/19/1996 10/6/1997, 62 FR 52016

Simkins Industries Trading Agreement and Order No. 8113 11/19/1996 10/6/1997, 62 FR 52016

Bridgeport Hydraulic Company Trading Agreement and Order No. 8135 12/24/1996 10/6/1997, 62 FR 52016

Town of Wallingford Department of Public Utilities Trading Agreement and Order No. 8141 12/27/1996 10/6/1997, 62 FR 52016

Algonquin Gas Transmission Company Trading Agreement and Order No. 8123 4/18/1997 10/6/1997, 62 FR 52016

Connecticut Resources Recovery Authority Trading Agreement and Order No. 8116 4/221997 10/6/1997, 62 FR 52016

Risdon Corporation Order No. 8036 5/6/1996 4/24/1998, 63 FR 20315

AlliedSignal, Inc. and U.S. Army Tank-Automotive and Armaments Command Trading Agreement and Order No. 8137 11/19/1996 9/28/1999, 64 FR 52233

Connecticut Natural Gas Corporation Trading Agreement and Order No. 8138 11/19/1996 9/28/1999, 64 FR 52233

Cytec Industries, Inc Trading Agreement and Order No. 8114 12/20/1996 9/28/1999, 64 FR 52233

CTG Resources, Inc. (Formerly The Connecticut Natural Gas Company) Trading Agreement and Order No. 8138 Modification 6/25/1997 9/28/1999, 64 FR 52233

AlliedSignal, Inc. and U.S. Army Tank-Automotive and Armaments Command Trading Agreement and Order No. 8137 Modification 7/8/1997 9/28/1999, 64 FR 52233

Ogden Martin Systems of Bristol, Inc Trading Agreement and Order No. 8094 7/23/1997 9/28/1999, 64 FR 52233

Wisvest-Connecticut, LLC Trading Agreement and Order No. 8177 5/31/2000 3/23/2001, 66 FR 16135

Wisvest-Connecticut, LLC Trading Agreement and Order No. 8187 1/12/2000 3/23/2001, 66 FR 16135

Ogden Martin Systems of Bristol, Inc Trading Agreement and Order No. 8094 Modification 2 5/22/2000 3/23/2001, 66 FR 16135

American Ref-Fuel Company of Southeastern Connecticut Trading Agreement and Order No. 8095 Modification 2 5/22/2000 3/23/2001, 66 FR 16135

Bridgeport Resco Company, Limited Partnership Trading Agreement and Order No. 8100 Modification 2 5/22/2000 3/23/2001, 66 FR 16135

Connecticut Resources Recovery Authority Trading Agreement and Order No. 8116 Modification 2 5/22/2000 3/23/2001, 66 FR 16135

Wisvest-Connecticut, LLC Trading Agreement and Order No. 8178 5/22/2000 3/23/2001, 66 FR 16135

Wisvest-Connecticut, LLC Trading Agreement and Order No. 8179 5/22/2000 3/23/2001, 66 FR 16135

Wisvest-Connecticut, LLC Trading Agreement and Order No. 8176 5/31/2000 3/23/2001, 66 FR 16135

Hitchcock Chair Company, Ltd Order No. 8229A 4/15/2002 10/24/2005, 70 FR 61384

Kimberly-Clark Corporation Order No. 8190 4/23/2002 10/24/2005, 70 FR 61384

Ross & Roberts, Inc Order No. 8237 10/4/2002 10/24/2005, 70 FR 61384

Sumitomo Bakelite North America, Inc Order No. 8245 10/11/2006 6/27/2013, 78 FR 38587

Cyro Industries Order No. 8268 2/28/2007 6/27/2013, 78 FR 38587

Curtis Packaging Corporation Order No. 8270 5/1/2007 6/27/2013, 78 FR 38587

PSEG Power Connecticut LLC (formerly Wisvest Connecticut LLC) Trading Agreement and Order No. 8187 Modification 1 7/16/2012 8/3/2015, 80 FR 45887

PSEG Power Connecticut LLC Trading Agreement and Order No. 8242 Modification 1 7/16/2012 8/3/2015, 80 FR 45887

Mallace Industries Corporation Order No. 8258 9/13/2005 5/1/2017, 82 FR 20262

Hamilton Sundstrand Order No. 8029A 9/3/2009 5/1/2017, 82 FR 20262

Middletown Power LLC, Montville Power LLC, Connecticut Jet Power LLC, and Devon Power LLC Consent Order No. 8377, Modification 1 5/3/2022 6/28/2022, 87 FR 38284 General Bridge Acquisition LLC purchased the collective sources referred to as “NRG Connecticut” in past references for Consent Order 8377.

Thames Shipyard & Repair Company Consent Order No. 8381 12/3/2021 7/24/2025, 90 FR 34768 EPA action also removed from the SIP: Dow Chemical U.S.A. Order # 7002B and Pratt & Whitney Order # 8027.

(e) Nonregulatory.

Connecticut Non Regulatory

Name of non-regulatory SIP provision Applicable geographic or nonattainment area State submittal date/ effective date EPA approved date Explanations

Miscellaneous non-regulatory addition to the plan and addition of amendment to Chapter 360 of General Statutes which provides authority for delegation of enforcement authority submitted on March 21, 1972, by the Connecticut Department of Environmental Protection 3/21/1972 5/31/1972, 37 FR 10842

Miscellaneous non-regulatory additions to the plan submitted on April 6, 1972, by the Connecticut Department of Environmental Protection 4/6/1972 5/31/1972, 37 FR 10842

Attainment dates submitted on August 10, 1972 by CT DEP 8/10/1972 5/14/1973, 38 FR 12696

Non-regulatory additions to the plan which were submitted on December 19, 1980, and amended on March 11, 1981, by CT DEP 12/19/1980 and 3/11/1981 8/28/1981, 46 FR 43418 Amending the sulfur control strategy to include an “Air Pollution Control/Energy Trade Option” except for submittal attachments #1 and #2, “Sulfur Dioxide” and “Transport of Sulfur Dioxide” and the section of attachment #3 “Control of Sulfur Oxides” entitled “Sample Analysis of a Btu Bubble Application”.

Non-regulatory addition to the plan of the state New Source Ambient Impact Analysis Guideline 12/19/1980; 3/11/1981; and 7/15/1981 8/28/1981, 46 FR 43418 For use in state program actions, submitted on December 19, 1980 and amended on March 11, 1981 and July 15, 1981.

Source Test Guidelines and Procedures; and Workshop Manual for Gasoline Tank Truck Certification 7/18/1985, 50 FR 29229 Includes Appendix B of Control of Volatile Organic Compound Leaks from Gasoline Tank Trucks and Vapor Collection Systems EPA-450/2-78-051.

Letter dated May 16, 1985 certifying the meaning of an “Acceptable Method” 5/16/1985 12/13/1985, 50 FR 50906 Interpreted to mean that any monitoring method used to collect ambient air pollution data used for attainment status evaluation or designation must be approved by EPA.

Technical Support Document prepared by CT DEP 4/11/1988, 53 FR 11847 Provides complete description of the reasonably available control technology determination imposed on Raymark Industries.

Letter from CT DEP dated July 3, 1986 7/3/1986 5/19/1988, 53 FR 17934 Commits CT DEP to use only EPA approved test methods when requiring the testing of sources emitting volatile organic compound emissions.

Letter from CT DEP dated May 29, 1987 5/29/1987 5/19/1988 Certifies that there are no polypropylene or high-density polyethylene manufacturers in the State of Connecticut.

Technical Support Document prepared by CT DEP 7/12/1988, 53 FR 26256 Provides complete description of the reasonably available control technology determination imposed on Spongex International, Ltd.

Technical Support Document prepared by CT DEP 8/1/1988, 53 FR 28884 Provides complete description of the reasonably available control technology determination imposed on American Cyanamid Co.

Technical Support Document prepared by CT DEP 3/24/1989, 54 FR 12193 Provides complete description of the reasonably available control technology determination imposed on New Departure Hyatt.

Technical Support Document prepared by CT DEP 4/10/1989, 54 FR 14226 Provides complete description of the reasonably available control technology determination imposed on Stanadyne, Inc.

Technical Support Document prepared by CT DEP 5/30/1989, 54 FR 22891 Provides complete description of the reasonably available control technology determination imposed on Pratt and Whitney's East Hartford facility.

Technical Support Document prepared by CT DEP 11/28/1989, 54 FR 48885 Provides complete description of the reasonably available control technology determination imposed on Frismar, Inc.

Technical Support Document prepared by CT DEP 3/12/1990, 55 FR 9121 Provides complete description of the reasonably available control technology determination imposed on Hamilton Standard.

Memorandum dated September 14, 1990 approving modeling analysis for Connecticut Light and Power 9/14/1990 3/24/1992, 57 FR 10139

Letter dated April 3, 1991 confirming that the revised configuration approved by State Order No. 7017 will not lead to violations 4/3/1991 3/24/1992, 57 FR 10139

Modeling Study dated January 26, 1990 for Connecticut Light and Power 1/28/1990 3/24/1992, 57 FR 10139

Memorandum dated August 17, 1989 approving modeling analysis for Stone Container Co 8/17/1989 11/20/1992, 57 FR 54703

Modeling Study dated August 9, 1989 for Stone Container Co 8/9/1989 11/20/1992, 57 FR 54703

State Order No 1073A, effective July 9, 1990 7/9/1990 11/20/1992, 57 FR 54703

Memorandum dated January 3, 1990 approving modeling analysis for Hartford Hospital 1/3/1990 11/20/1992, 57 FR 54703

Modeling Study dated December 28, 1989 for Hartford Hospital 12/28/1989 11/20/1992, 57 FR 54703

SIP narrative entitled “New Source Review” 2/23/1993, 56 FR 10957

Letter from CT DEP regarding implementation of BACT 2/23/1993, 56 FR 10957

Narrative of SIP Revision: Stage II Vapor Recovery January 1993 12/17/1993, 58 FR 65930

Air Quality Modeling Analysis to Demonstrate SO2 CAAQS/NAAQS Compliance June 1991 1/18/1994, 59 FR 2530 Relates to Hamilton Standard Division of United Technologies Corporation.

Letter from CT DEP dated April 6, 1994 clarifying the January 12, 1993 submittal 4/6/1994 5/19/1994, 59 FR 26123

An attainment plan and demonstration which outlines Connecticut's control strategy and for attainment and maintenance of the PM10 NAAQS 9/11/1995, 60 FR 47076 Implements and meets RACM and RACT requirements, and provides contingency measures for New Haven.

Letter dated June 18, 1996 from CT DEP and SIP narratives for various Source Orders 6/18/1996 10/6/1997, 62 FR 52016 SIP narratives for Order Nos. 8092, 8095, 8093, 8096, 8106, 8107, 8105, 8100, and others.

Letter from CT DEP dated June 27, 1994 clarifying language in sec 22a-174-32(A) 6/27/1994 3/10/1999, 64 FR 12019

Letters from CT DEP dated June 24, 1998 and November 13, 1998 submitting CT SIP revisions 6/24/1998 and 11/13/1998 3/10/1999, 64 FR 12005

Nonregulatory portions of submittals and Policy materials concerning the use of emission credits from New Jersey at Connecticut sources 7/11/1997, 9/12/1997, and 12/8/1997 9/28/1999, 64 FR 52233

Letter from CT DEP dated October 7, 1999 submitting a revision to the CT SIP 10/7/1999 12/1/1999, 64 FR 67188

Letter from CT DEP dated February 7, 1996 submitting a revision to the CT SIP for the Low Emission Vehicle Program 2/7/1996 3/9/2000, 65 FR 12476

Letter from CT DEP dated February 18, 1999 submitting a revision to the CT SIP 2/7/1996 3/9/2000, 65 FR 12476 Request for the National Low Emission Vehicle program to be a compliance option under the State's Low Emission Vehicle Program.

Letters from CT DEP dated April 15, 1997, April 20, 1998, and September 2, 1999 submitting revisions to the CT SIP 4/15/1997, 4/20/1998, and 9/2/199 10/19/2000, 65 FR 62620

Letter from CT DEP dated November 19, 1999 submitting a revision to the CT SIP 11/19/1999 10/27/2000, 65 FR 64357

Narrative portion of the SIP revision for Enhanced Motor Vehicle Inspection and Maintenance Program 10/7/1999 10/27/2000, 65 FR 64357

Letter from CT DEP dated September 30, 1999 submitting a revision to the CT SIP 9/30/1999 12/27/2000, 65 FR 81743 Contains RCSA section 22a-174-22b and associated administrative materials.

SIP Narrative dated September 30, 1999 for CT SIP revision 9/30/1999 12/27/2000, 65 FR 81743 SIP revision to implement the NOX SIP Call.

Letter from CT DEP dated May 19, 2000 submitting a revision to the CT SIP 5/19/2000 3/23/2001, 66 FR 16135

SIP narrative materials December 1999 3/23/2001, 66 FR 16135 Submitted with Source Order Nos. 8176, 8177, 8178, 8179, and 8187.

Letter from CT DEP dated October 15, 2001 submitting a revision to the CT SIP 10/15/2001 12/6/2001, 66 FR 63311

Letter from CT DEP dated June 14, 2002 submitting a revision to the CT SIP 6/14/2002 2/27/2003, 68 FR 9009

Pressure Vacuum Vent Cap Test Procedures 8/31/2006, 71 FR 51765

Table 1 showing the emission reductions resulting form the measures Connecticut adopted to meet the shortfall identified in the Connecticut on-hour ozone attainment demonstration 8/31/2006, 71 FR 51765

Connecticut Regional Haze SIP Revision Nov. 2009 7/10/14, 79 FR 39322

Letter from CT DEEP dated March 12, 2012 3/12/2012 7/10/14, 79 FR 39322 Clarification of Connecticut's 2008 PM2.5 Attainment Demonstration.

Letter from CT DEEP dated February 24, 2012 regarding Regional Haze SIP 2/24/2012 7/10/14, 79 FR 39322

Letter from CT DEEP dated November 23, 2012 11/23/2012 7/10/14, 79 FR 39322 Withdrawal of Request for Parallel Processing.

Letter from CT DEEP dated January 14, 2013, entitled “Information to Support EPA's Approval of Connecticut's Requirements for Opacity” 1/14/2013 7/16/14, 79 FR 41436

Letter from CT DEEP dated July 8, 2013 7/8/2013 7/16/14, 79 FR 41436 Withdrawing from CT DEEP's December 1, 2004 SIP revision the phrase “and malfunction” from Subsection (j)(1) of RCSA Section 22a-174-18.

Letter from CT DEEP dated March 27, 2014 3/27/2014 7/16/14, 79 FR 41436 Withdrawing from CT DEEP's December 1, 2004 SIP revision section 22a-174-18(j)(2).

Adequacy Determination of the Connecticut SIP with Regard to CAA Section 110(a)(1) and (2) for the 8-Hr Ozone NAAQS Program Infrastructure 12/28/2007 6/3/16, 81 FR 35639

Adequacy Determination of the Connecticut SIP with Regard to CAA Section 110(a) Infrastructure Elements: 1997 PM2.5 NAAQS 9/4/2008 6/3/16, 81 FR 35639

Adequacy Determination of the Connecticut SIP with Regard to CAA Section 110(a)(1) and (2) for 2006 PM2.5 NAAQS 9/18/2009 6/3/16, 81 FR 35639

CT DEEP document dated January 7, 2011 1/7/2011 6/3/16, 81 FR 35639 Request to withdraw a portion of Connecticut's PM2.5 Infrastructure Adequacy Determination.

Addendum to the CAA section 110(a)(2)(D)(i)(I) Portion of Connecticut's Infrastructure Submittal for the 2006 PM2.5 NAAQS 8/19/2011 6/3/16, 81 FR 35639

Adequacy Determination of the CT SIP with Regard to CAA section 110(a)(1) and (2) for the 2008 Lead NAAQS 10/13/2011 6/3/16, 81 FR 35639

Update to Connecticut PM2.5 Infrastructure submittal 6/15/2012 6/3/16, 81 FR 35639

CT SIP with Regard to the Infrastructure Requirements of CAA section 110(a)(1) and (2) for the 2008 Ozone NAAQS 12/28/2012 6/3/16, 81 FR 35639

CT SIP with Regard to the Infrastructure Requirements of CAA section 110(a)(1) and (2) for the 2010 Nitrogen Dioxide NAAQS 1/2/2013 6/3/16, 81 FR 35639

Connecticut SIP for CAA Section 110(a) Infrastructure Elements: 2010 Sulfur Dioxide NAAQS 5/30/2013 6/3/16, 81 FR 35639

Supplement to Infrastructure SIP Revisions 8/5/2015 6/3/16, 81 FR 35639

Letter from CT DEEP dated September 14, 2015, submitting a revision to the SIP 9/14/2015 12/15/17, 82 FR 59519

Addendum to the CAA § 110(a)(2)(D)(i)(I) Portion of Connecticut's Infrastructure Submittal for the 2006 PM2.5 NAAQS 8/19/2011 8/1/18, 83 FR 37437

Infrastructure SIP for the 2012 PM2.5 NAAQS 12/14/2015 8/1/18, 83 FR 37437

Letter from CT DEEP dated October 18, 2017, submitting a revision to the SIP 10/18/2017 8/1/18, 83 FR 37437 SIP revision concerning Consumer Products, Architectural and Industrial Maintenance Coatings and Prevention of Significant Deterioration Permit Programs.

Regional Haze 5-Yr Progress Report 7/8/2015 11/26/19, 84 FR 65007

Good Neighbor SIP for the 2008 Ozone NAAQS 6/11/2015 2/14/20, 85 FR 8406

Infrastructure SIP submittal for 2015 Ozone NAAQS 9/7/2018 8/19/20, 85 FR 50953

Good Neighbor SIP for the 2015 Ozone NAAQS 12/6/2018 12/20/21, 86 FR 71830

Letter from CT DEEP dated October 26, 2020, submitting a revision to the SIP 10/26/2020 3/11/22, 87 FR 13936 Letter from CT DEEP dated January 12, 2022 withdrawing regulation section 22a-174-33b(d)(6) from the SIP revision.

Letters from CT DEEP dated December 15, 2020 and February 14, 2023, submitting a revision to the SIP 12/15/2020 9/5/23, 88 FR 60591 SIP revision concerning the New Source Review Permit Program Update.

Letter from CT DEEP dated November 30, 2023, submitting a revision to the SIP 11/30/2023 2/12/24, 89 FR 9771 SIP revision concerning the Definition of Severe non-Attainment Area for Ozone.

Regional Haze plan for Second Implementation Period (2018-2028) 1/5/2022 9/17/24, 89 FR 75973

Second 10-year Limited Maintenance Plan for Connecticut's PM2.5 Maintenance Area 5/9/2023 11/15/2024, 89 FR 90230

Attainment Plan SIP elements for Connecticut's Serious Nonattainment area under the 2008 Ozone NAAQS 6/23/2022 4/1/2025, 90 FR 14341 Pertains to requirements for Reasonable Further Progress (RFP), enhanced motor vehicle inspection and maintenance (I/M) program, motor vehicle emission budgets for transportation conformity, and a clean fuels for motor vehicles program.

Letter from CT DEEP dated May 22, 2023, submitting a revision to the SIP 5/22/2023 4/22/25, 90 FR 16814 SIP revision concerning New Source Review certification for the Greater CT Moderate Nonattainment area under the 2015 Ozone NAAQS and an Emission Statement certification for both the Greater CT and the Southwest CT Moderate Nonattainment areas under the 2015 Ozone NAAQS.

Letter from CT DEEP dated May 3, 2024, submitting a revision to the SIP 5/3/2024 7/16/25, 90 FR 31881 SIP revision concerning a 2017 Base Year Emissions Inventory for the 2015 Ozone NAAQS. Submittal also includes 2014 and 2017 Periodic Emission Inventories for the 2008 Ozone NAAQS, approved under separate action.

Collected 2026-08-27T02:26:04Z. Source file · JSON

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