{"data":{"id":"us/40-cfr-52.370","jurisdiction":"us","citation":"40 CFR 52.370","heading":"Identification of plan.","body":"(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.\n(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.\n(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.\n(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.\n(c) EPA-approved regulations.\nEPA-Approved Connecticut Regulations and Statutes\nState citation Title/subject State effective date EPA approval date Explanations\n14-164c 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.\n22a-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.\n22a-174-1 Definitions 11/13/2023 02/12/2024, 89 FR 9771 Modified definition of “severe non-attainment area for ozone.”\nNote: 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.\n22a-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).\n22a-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.\n22a-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.\n22a-174-4a Source monitoring, record keeping and reporting 10/28/2022 07/08/2024, 89 FR 55888 Replaces 22a-174-4.\n22a-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\n19-508-6 Air Pollution Emergency Episode Procedures 08/31/1979 12/23/1980, 45 FR 84769\n22a-174-7 Air Pollution Control Equipment and Monitoring Equipment Operation 04/01/2004 07/16/2014, 79 FR 41427\n19-508-8, 22a-174-8 Compliance Plan and Schedules 12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.\n19-508-9 Prohibition of Air Pollution 08/31/1979 08/12/1983, 48 FR 36579\n19-508-10 Public Availability of Information 04/04/1972 10/28/1972, 37 FR 23085\n19-508-11 Prohibition Against Concealment or Circumvention 04/04/1972 10/28/1972, 37 FR 23085\n19-508-12 Violations and Enforcement 04/04/1972 10/28/1972, 37 FR 23085\n19-508-13 Variances 08/31/1979 12/23/1980, 45 FR 84769\n19-508-14 Compliance with Regulation No Defense to Nuisance Claim 04/04/1972 05/31/1972, 37 FR 10842\n19-508-15 Severability 04/04/1972 05/31/1972, 37 FR 10842\n19-508-16 Responsibility to Comply with Applicable Regulations 04/04/1972 05/31/1972, 37 FR 10842\n19-508-18 Control of Particulate Emissions 07/11/1981 09/23/1982, 47 FR 41958\n22a-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.\n12/22/2016 07/31/2017, 82 FR 35454 Minor edit to update citation.\n08/03/2018 10/29/2020, 85 FR 68472 Approval of revisions to subsections (c), (f), and (j).\n22a-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\n22a-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).\n04/15/2014 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).\n22a-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.\n22a-174-20 Control of Organic Compound Emissions 10/28/2022 07/08/2024, 89 FR 55888 Amends 22a-174-20(a)(12).\n19-508-21 Control of Carbon Monoxide Emissions 04/04/1972 10/28/1972, 37 FR 23085\n22a-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.\n22a-174-22a Nitrogen Oxides (NOX) Budget Program 03/03/1999 09/28/1999, 64 FR 52233\n09/04/2007 01/24/2008, 73 FR 4105 Repealed as of January 24, 2008. Superseded by CAIR (22a-174-22c).\n22a-174-22b Post-2002 Nitrogen Oxides (NOX) Budget Program 09/29/1999 12/27/2000, 65 FR 81743\n09/04/2007 01/24/2008, 73 FR 4105 Repealed as of May 1, 2010. Superseded by CAIR (22a-174-22c).\n22a-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.\n22a-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).\n22a-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).\n19-508-24 Connecticut Primary and Secondary Standards 10/08/1980 12/13/1985, 50 FR 50906\n22a-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.\n19-508-25 Effective Date 04/04/1972 10/28/1972, 37 FR 23085\n22a-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).\n22a-174-28 Oxygenated Gasoline 04/15/2014 06/24/2015, 80 FR 36242 Amendment of subdivision (a)(5) Control period.\n22a-174-30a Stage I Vapor Recovery 07/08/2015 12/15/2017, 82 FR 59519 Replaces the repealed section 22a-174-30.\n22a-174-32 Reasonably Available Control Technology for Volatile Organic Compounds 07/08/2015 12/15/2017, 82 FR 59519 Revises section (b)(3).\n22a-174-33a Limit on Premises-wide Actual Emissions Below 50% of Title V Thresholds 09/24/2020 03/11/2022, 87 FR 13936\n22a-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.\n22a-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.\n22a-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.\n22a-174-36c (pdf) (141 KB) Low Emission Vehicles III program 08/01/2013 07/15/2024, 89 FR 57361 Adopts the LEV III regulation.\n22a-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.\n22a-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.\n22a-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.\n22a-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.\n22a-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.\nConnecticut 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.\nConnecticut 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.\nConnecticut 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.\nConnecticut 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.\nConnecticut 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.\n(d) EPA-approved State source-specific requirements.\nEPA-Approved Connecticut Source-Specific Requirements\nName of source Permit No. State effective date EPA approval date Explanations\nSikorsky Aircraft Division of United Technologies Corp Letter dated May 19, 1982 3/9/1982 11/12/1982, 47 FR 51129 Includes Order No. 7003A.\nLydall \u0026 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.\nSimkins Industries Letter dated July 19, 1983 12/14/1982 6/28/1983, 48 FR 29689 Allows variance per Sulfur Energy Trade Program.\nLoomis Institute Letter dated July 13, 1983 5/24/1983 12/20/1983, 48 FR 56218 Allows variance per Sulfur Energy Trade Program.\nConnecticut Charcoal Company Order No. 943 5/28/1986 11/20/1986, 51 FR 41963\nKing Industries Order No. 944 4/23/1986 2/19/1987, 52 FR 5104\nBelding Corticelli Thread Company Order No. 8007 8/8/1987 12/17/1987, 52 FR 47925\nRaymark Industries, Inc Order No. 8013 9/24/1987 4/11/1988, 53 FR 11847 Includes Compliance Timetable.\nAmerican Cyanamid Company Order No. 8012 1/6/1988 8/1/1988, 53 FR 28884 Includes Compliance Timetable.\nSpongex International, Ltd Order No. 8008 8/21/1987 7/12/1988, 53 FR 26256 Includes Compliance Timetable.\nGeneral Motors Corporation Order No. 8023 7/8/1988 3/24/1989, 54 FR 12193 Includes Compliance Timetable.\nFrismar, Inc Order No. 8001 10/20/1987 11/28/1989, 54 FR 48885 Includes Compliance Timetable.\nStanadyne, Inc Order No. 8018 1/3/1989 4/10/1989, 54 FR 14226 Includes Compliance Timetable.\nHamilton Standard Division of United Technologies Corp Order No. 8029 11/29/1989 3/12/1990, 55 FR 9121 Includes Compliance Timetable.\nStone Connecticut Paperboard Corporation Order No. 1073B 2/25/1992 11/20/1992, 57 FR 54703\nHartford Hospital Order No. 7016A 2/5/1992 11/20/1992, 57 FR 54703 Includes Compliance Timetable.\nConnecticut Light and Power Company Order No. 7017 2/25/1991 3/24/1992, 57 FR 10139 Includes Compliance Timetable.\nUnited Technologies Corporation Order No. 7019 2/19/1993 1/18/1994, 59 FR 2530\nCity of New Haven Order No. 8073 9/24/1993 9/11/1995, 60 FR 47076\nWaterfront Enterprises, Inc Order No. 8074 11/5/1993 9/11/1995, 60 FR 47076\nLaydon Construction Order No. 8075 9/21/1993 9/11/1995, 60 FR 47076\nUnited Illuminating Company Order No. 8076 12/2/1993 9/11/1995, 60 FR 47076\nM.J. Metals, Inc Order No. 8076c 6/18/1993 9/11/1995, 60 FR 47076\nNew Haven Terminal, Inc Order No. 8078 11/15/1993 9/11/1995, 60 FR 47076\nYankee Gas Services Company Order No. 8079 9/24/1993 9/11/1995, 60 FR 47076\nUnited Illuminating Company Trading Agreement and Order No. 8092 5/18/1995 10/6/1997, 62 FR 52016\nAmerican Ref-Fuel Company of Southeastern Connecticut Trading Agreement and Order No. 8095 6/2/1995 10/6/1997, 62 FR 52016\nPfizer, Inc Trading Agreement and Order No. 8093 7/19/1995 10/6/1997, 62 FR 52016\nConnecticut Light and Power Company Trading Agreement and Order No. 8096 10/10/1995 10/6/1997, 62 FR 52016\nNortheast Nuclear Energy Company Trading Agreement and Order No. 8106 10/13/1995 10/6/1997, 62 FR 52016\nNortheast Nuclear Energy Company Trading Agreement and Order No. 8107 10/13/1995 10/6/1997, 62 FR 52016\nGeneral Dynamics Corporation, Electric Boat Division Trading Agreement and Order No. 8105 10/31/1995 10/6/1997, 62 FR 52016\nBridgeport Resco Company, Limited Partnership Trading Agreement and Order No. 8100 11/2/1995 10/6/1997, 62 FR 52016\nUnited Illuminating Company Trading Agreement and Order No. 8102 12/15/1995 10/6/1997, 62 FR 52016\nUnited Illuminating Company Trading Agreement and Order No. 8103 2/14/1996 10/6/1997, 62 FR 52016\nCity of Norwich Department of Public Utilities Trading Agreement and Order No. 8119 3/4/1996 10/6/1997, 62 FR 52016\nSouth Norwalk Electric Works Trading Agreement and Order No. 8118 3/19/1996 10/6/1997, 62 FR 52016\nState of Connecticut Department of Mental Health and Addiction Services Trading Agreement and Order No. 8101 7/16/1996 10/6/1997, 62 FR 52016\nYale University Trading Agreement and Order No. 8110 7/29/1996 10/6/1997, 62 FR 52016\nBridgeport Hospital Trading Agreement and Order No. 8132 9/10/1996 10/6/1997, 62 FR 52016\nConnecticut Light and Power Company Order No. 1494 10/15/1996 10/6/1997, 62 FR 52016\nState of Connecticut Department of Public Works Trading Agreement and Order No. 8130 10/18/1996 10/6/1997, 62 FR 52016\nUniversity of Connecticut Trading Agreement and Order No. 8115 11/19/1996 10/6/1997, 62 FR 52016\nSimkins Industries Trading Agreement and Order No. 8113 11/19/1996 10/6/1997, 62 FR 52016\nBridgeport Hydraulic Company Trading Agreement and Order No. 8135 12/24/1996 10/6/1997, 62 FR 52016\nTown of Wallingford Department of Public Utilities Trading Agreement and Order No. 8141 12/27/1996 10/6/1997, 62 FR 52016\nAlgonquin Gas Transmission Company Trading Agreement and Order No. 8123 4/18/1997 10/6/1997, 62 FR 52016\nConnecticut Resources Recovery Authority Trading Agreement and Order No. 8116 4/221997 10/6/1997, 62 FR 52016\nRisdon Corporation Order No. 8036 5/6/1996 4/24/1998, 63 FR 20315\nAlliedSignal, 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\nConnecticut Natural Gas Corporation Trading Agreement and Order No. 8138 11/19/1996 9/28/1999, 64 FR 52233\nCytec Industries, Inc Trading Agreement and Order No. 8114 12/20/1996 9/28/1999, 64 FR 52233\nCTG Resources, Inc. (Formerly The Connecticut Natural Gas Company) Trading Agreement and Order No. 8138 Modification 6/25/1997 9/28/1999, 64 FR 52233\nAlliedSignal, 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\nOgden Martin Systems of Bristol, Inc Trading Agreement and Order No. 8094 7/23/1997 9/28/1999, 64 FR 52233\nWisvest-Connecticut, LLC Trading Agreement and Order No. 8177 5/31/2000 3/23/2001, 66 FR 16135\nWisvest-Connecticut, LLC Trading Agreement and Order No. 8187 1/12/2000 3/23/2001, 66 FR 16135\nOgden Martin Systems of Bristol, Inc Trading Agreement and Order No. 8094 Modification 2 5/22/2000 3/23/2001, 66 FR 16135\nAmerican Ref-Fuel Company of Southeastern Connecticut Trading Agreement and Order No. 8095 Modification 2 5/22/2000 3/23/2001, 66 FR 16135\nBridgeport Resco Company, Limited Partnership Trading Agreement and Order No. 8100 Modification 2 5/22/2000 3/23/2001, 66 FR 16135\nConnecticut Resources Recovery Authority Trading Agreement and Order No. 8116 Modification 2 5/22/2000 3/23/2001, 66 FR 16135\nWisvest-Connecticut, LLC Trading Agreement and Order No. 8178 5/22/2000 3/23/2001, 66 FR 16135\nWisvest-Connecticut, LLC Trading Agreement and Order No. 8179 5/22/2000 3/23/2001, 66 FR 16135\nWisvest-Connecticut, LLC Trading Agreement and Order No. 8176 5/31/2000 3/23/2001, 66 FR 16135\nHitchcock Chair Company, Ltd Order No. 8229A 4/15/2002 10/24/2005, 70 FR 61384\nKimberly-Clark Corporation Order No. 8190 4/23/2002 10/24/2005, 70 FR 61384\nRoss \u0026 Roberts, Inc Order No. 8237 10/4/2002 10/24/2005, 70 FR 61384\nSumitomo Bakelite North America, Inc Order No. 8245 10/11/2006 6/27/2013, 78 FR 38587\nCyro Industries Order No. 8268 2/28/2007 6/27/2013, 78 FR 38587\nCurtis Packaging Corporation Order No. 8270 5/1/2007 6/27/2013, 78 FR 38587\nPSEG Power Connecticut LLC (formerly Wisvest Connecticut LLC) Trading Agreement and Order No. 8187 Modification 1 7/16/2012 8/3/2015, 80 FR 45887\nPSEG Power Connecticut LLC Trading Agreement and Order No. 8242 Modification 1 7/16/2012 8/3/2015, 80 FR 45887\nMallace Industries Corporation Order No. 8258 9/13/2005 5/1/2017, 82 FR 20262\nHamilton Sundstrand Order No. 8029A 9/3/2009 5/1/2017, 82 FR 20262\nMiddletown 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.\nThames Shipyard \u0026 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 \u0026 Whitney Order # 8027.\n(e) Nonregulatory.\nConnecticut Non Regulatory\nName of non-regulatory SIP provision Applicable geographic or nonattainment area State submittal date/ effective date EPA approved date Explanations\nMiscellaneous 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\nMiscellaneous 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\nAttainment dates submitted on August 10, 1972 by CT DEP 8/10/1972 5/14/1973, 38 FR 12696\nNon-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”.\nNon-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.\nSource 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.\nLetter 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.\nTechnical 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.\nLetter 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.\nLetter 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.\nTechnical 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.\nTechnical 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.\nTechnical 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.\nTechnical 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.\nTechnical 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.\nTechnical 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.\nTechnical 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.\nMemorandum dated September 14, 1990 approving modeling analysis for Connecticut Light and Power 9/14/1990 3/24/1992, 57 FR 10139\nLetter 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\nModeling Study dated January 26, 1990 for Connecticut Light and Power 1/28/1990 3/24/1992, 57 FR 10139\nMemorandum dated August 17, 1989 approving modeling analysis for Stone Container Co 8/17/1989 11/20/1992, 57 FR 54703\nModeling Study dated August 9, 1989 for Stone Container Co 8/9/1989 11/20/1992, 57 FR 54703\nState Order No 1073A, effective July 9, 1990 7/9/1990 11/20/1992, 57 FR 54703\nMemorandum dated January 3, 1990 approving modeling analysis for Hartford Hospital 1/3/1990 11/20/1992, 57 FR 54703\nModeling Study dated December 28, 1989 for Hartford Hospital 12/28/1989 11/20/1992, 57 FR 54703\nSIP narrative entitled “New Source Review” 2/23/1993, 56 FR 10957\nLetter from CT DEP regarding implementation of BACT 2/23/1993, 56 FR 10957\nNarrative of SIP Revision: Stage II Vapor Recovery January 1993 12/17/1993, 58 FR 65930\nAir 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.\nLetter from CT DEP dated April 6, 1994 clarifying the January 12, 1993 submittal 4/6/1994 5/19/1994, 59 FR 26123\nAn 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.\nLetter 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.\nLetter from CT DEP dated June 27, 1994 clarifying language in sec 22a-174-32(A) 6/27/1994 3/10/1999, 64 FR 12019\nLetters 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\nNonregulatory 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\nLetter from CT DEP dated October 7, 1999 submitting a revision to the CT SIP 10/7/1999 12/1/1999, 64 FR 67188\nLetter 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\nLetter 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.\nLetters 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\nLetter from CT DEP dated November 19, 1999 submitting a revision to the CT SIP 11/19/1999 10/27/2000, 65 FR 64357\nNarrative portion of the SIP revision for Enhanced Motor Vehicle Inspection and Maintenance Program 10/7/1999 10/27/2000, 65 FR 64357\nLetter 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.\nSIP 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.\nLetter from CT DEP dated May 19, 2000 submitting a revision to the CT SIP 5/19/2000 3/23/2001, 66 FR 16135\nSIP narrative materials December 1999 3/23/2001, 66 FR 16135 Submitted with Source Order Nos. 8176, 8177, 8178, 8179, and 8187.\nLetter from CT DEP dated October 15, 2001 submitting a revision to the CT SIP 10/15/2001 12/6/2001, 66 FR 63311\nLetter from CT DEP dated June 14, 2002 submitting a revision to the CT SIP 6/14/2002 2/27/2003, 68 FR 9009\nPressure Vacuum Vent Cap Test Procedures 8/31/2006, 71 FR 51765\nTable 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\nConnecticut Regional Haze SIP Revision Nov. 2009 7/10/14, 79 FR 39322\nLetter 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.\nLetter from CT DEEP dated February 24, 2012 regarding Regional Haze SIP 2/24/2012 7/10/14, 79 FR 39322\nLetter from CT DEEP dated November 23, 2012 11/23/2012 7/10/14, 79 FR 39322 Withdrawal of Request for Parallel Processing.\nLetter 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\nLetter 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.\nLetter 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).\nAdequacy 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\nAdequacy 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\nAdequacy 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\nCT 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.\nAddendum 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\nAdequacy 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\nUpdate to Connecticut PM2.5 Infrastructure submittal 6/15/2012 6/3/16, 81 FR 35639\nCT 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\nCT 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\nConnecticut SIP for CAA Section 110(a) Infrastructure Elements: 2010 Sulfur Dioxide NAAQS 5/30/2013 6/3/16, 81 FR 35639\nSupplement to Infrastructure SIP Revisions 8/5/2015 6/3/16, 81 FR 35639\nLetter from CT DEEP dated September 14, 2015, submitting a revision to the SIP 9/14/2015 12/15/17, 82 FR 59519\nAddendum 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\nInfrastructure SIP for the 2012 PM2.5 NAAQS 12/14/2015 8/1/18, 83 FR 37437\nLetter 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.\nRegional Haze 5-Yr Progress Report 7/8/2015 11/26/19, 84 FR 65007\nGood Neighbor SIP for the 2008 Ozone NAAQS 6/11/2015 2/14/20, 85 FR 8406\nInfrastructure SIP submittal for 2015 Ozone NAAQS 9/7/2018 8/19/20, 85 FR 50953\nGood Neighbor SIP for the 2015 Ozone NAAQS 12/6/2018 12/20/21, 86 FR 71830\nLetter 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.\nLetters 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.\nLetter 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.\nRegional Haze plan for Second Implementation Period (2018-2028) 1/5/2022 9/17/24, 89 FR 75973\nSecond 10-year Limited Maintenance Plan for Connecticut's PM2.5 Maintenance Area 5/9/2023 11/15/2024, 89 FR 90230\nAttainment 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.\nLetter 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.\nLetter 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.","path":["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"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"02172525dc9a1f1a9ab7f3e42d44118bbd4e9d1f9c7acc84c0d7574cff328f49","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.369","next":"us/40-cfr-52.371"},"notice":"GroundRules: Original legal text. Not legal advice."}