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Air Regulations & Guidance
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- Illinois
- Indiana
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- Kansas
- Kentucky
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- Maryland
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- Mississippi
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- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
- Other States
Federal EPA
Federal programs
- NSPSAirPermitHub Summary
New Source Performance Standards
Performance standards for new, modified, and reconstructed sources.
40 CFR Part 60 - NESHAPAirPermitHub Summary
National Emission Standards for Hazardous Air Pollutants
Hazardous air pollutant standards, including MACT and GACT source categories.
40 CFR Parts 61 and 63 - Title VAirPermitHub Summary
Title V Operating Permits
Operating permits that consolidate a source's applicable requirements.
40 CFR Parts 70 and 71 - NSRAirPermitHub Summary
New Source Review
Preconstruction permitting for new and modified sources.
40 CFR 51.160–51.166; 40 CFR 52.21 - PSDAirPermitHub Summary
Prevention of Significant Deterioration
Major NSR for attainment and unclassifiable areas.
40 CFR 52.21; 40 CFR 51.166 - NNSRAirPermitHub Summary
Nonattainment New Source Review
Major NSR for areas that do not meet air quality standards.
40 CFR 51.165 - AP-42AirPermitHub Summary
Compilation of Air Pollutant Emission Factors
EPA's primary compilation of emission factors for stationary sources.
EPA AP-42 - GuidanceIn development
Regulatory Guidance
EPA guidance and applicability determinations index.
State programs
State regulatory hubs
Alabama
Verified against agency sourceAlabama Department of Environmental Management (ADEM)
- ADEM Admin. Code Division 335-3
- 335-3-14
- 335-3-15
- 335-3-16
- 335-3-18
- 335-1, Schedule A
Alaska
Verified against agency sourceAlaska Department of Environmental Conservation (DEC)
- 18 AAC 50
- AS 46.14
- Alaska SIP
Arizona
Verified against agency sourceArizona Department of Environmental Quality (ADEQ)
- A.A.C. Title 18, Chapter 2
Arkansas
Verified against agency sourceArkansas Department of Energy and Environment, Division of Environmental Quality (DEQ)
- APC&EC Rule 18
- APC&EC Rule 19
- APC&EC Rule 26
- APC&EC Rule 9
California
Partially verifiedCalifornia Air Resources Board (CARB) with 35 local air districts
- Cal. Health & Safety Code § 42300 et seq.
- Cal. Health & Safety Code §§ 39620, 41500
- 17 CCR §§ 95665-95677
- Local district rules
- 40 CFR 52.220 et seq.
Colorado
Verified against agency sourceColorado Department of Public Health and Environment (CDPHE)
- AQCC Regulation 3
- AQCC Regulation 6
- AQCC Regulation 7
- AQCC Regulation 22
Connecticut
Verified against agency sourceConnecticut Department of Energy and Environmental Protection (DEEP)
- RCSA § 22a-174-1
- RCSA § 22a-174-3a
- RCSA §§ 22a-174-3b to 3d
- RCSA § 22a-174-33
- RCSA §§ 22a-174-33a, 33b
- CT Air Regulations index
Delaware
Verified against agency sourceDelaware Department of Natural Resources and Environmental Control (DNREC)
- 7 DE Admin. Code 1101
- 7 DE Admin. Code 1102
- 7 DE Admin. Code 1125
- 7 DE Admin. Code 1130
- Title 7 Air Quality Regulations index
District of Columbia
Partially verifiedDC Department of Energy and Environment (DOEE)
- 20 DCMR Chapter 2
- 20 DCMR Chapter 3
- 20 DCMR Chapter 2 (DOEE PDF)
Florida
Verified against agency sourceFlorida Department of Environmental Protection (DEP)
- Chapter 62-4, F.A.C.
- Chapter 62-204, F.A.C.
- Chapter 62-210, F.A.C.
- Chapter 62-212, F.A.C.
- Chapter 62-213, F.A.C.
- Chapter 62-214, F.A.C.
Georgia
Verified against agency sourceGeorgia Environmental Protection Division (EPD)
- Ga. Comp. R. & Regs. Chapter 391-3-1
- 391-3-1-.02(2)(tt), (yy)
- 391-3-1-.03
Hawaii
Verified against agency sourceHawaii State Department of Health (DOH)
- HAR Chapter 11-60.1
Idaho
Partially verifiedIdaho Department of Environmental Quality (DEQ)
- IDAPA 58.01.01
Illinois
Verified against agency sourceIllinois Environmental Protection Agency (Illinois EPA)
- 35 Ill. Adm. Code Part 201
- 35 Ill. Adm. Code Part 203
- 415 ILCS 5/39.5
- 415 ILCS 5/39.10
Indiana
Verified against agency sourceIndiana Department of Environmental Management (IDEM)
- 326 IAC 2
- 326 IAC 2-2
- 326 IAC 2-3
- 326 IAC 2-5.1
- 326 IAC 2-6.1
- 326 IAC 2-7
Iowa
Verified against agency sourceIowa Department of Natural Resources (DNR)
- 567 IAC Chapters 21-33
- 567 IAC 22.1(2)
- 567 IAC 24.103
Kansas
Verified against agency sourceKansas Department of Health and Environment (KDHE)
- K.A.R. 28-19-300 to 28-19-304
- K.A.R. 28-19-350
- K.A.R. 28-19-500 series
Kentucky
Verified against agency sourceKentucky Energy and Environment Cabinet
- 401 KAR Chapter 52
- 401 KAR 52:020
- 401 KAR 52:030
- 401 KAR 52:040
- 401 KAR 52:070
Louisiana
Partially verifiedLouisiana Department of Environmental Quality (LDEQ)
- LAC 33:III (Part III, Air)
- LAC 33:III Chapter 5
- LAC 33:III Chapter 2
- LAC 33:III Chapter 51
Maine
Verified against agency sourceMaine Department of Environmental Protection (DEP)
- 06-096 CMR Chapter 115
- 06-096 CMR Chapter 140
- Maine DEP air rules index
Maryland
Verified against agency sourceMaryland Department of the Environment (MDE)
- COMAR 26.11.02
- COMAR 26.11.03
- Environment Article, Title 2, Subtitle 4
Massachusetts
Partially verifiedMassachusetts Department of Environmental Protection (MassDEP)
- 310 CMR 7.00
- 310 CMR 7.02
- 310 CMR 7.03
- 310 CMR 7.12
- 310 CMR 7.26
Michigan
Verified against agency sourceMichigan Department of Environment, Great Lakes, and Energy (EGLE)
- Mich. Admin. Code R 336.1101 et seq.
- R 336.1201
- R 336.1210-1218
Minnesota
Verified against agency sourceMinnesota Pollution Control Agency (MPCA)
- Minn. R. ch. 7007
- Minn. R. ch. 7008
Mississippi
Verified against agency sourceMississippi Department of Environmental Quality (MDEQ)
- 11 Miss. Admin. Code Pt. 2, Ch. 2
- 11 Miss. Admin. Code Pt. 2, Ch. 5
- 11 Miss. Admin. Code Pt. 2, Ch. 6
- MDEQ Air Regulations index
Missouri
Verified against agency sourceMissouri Department of Natural Resources (DNR)
- 10 CSR 10-6.060
- 10 CSR 10-6.061
- 10 CSR 10-6.065
- Section 643.050, RSMo
Montana
Partially verifiedMontana Department of Environmental Quality (DEQ)
- ARM Title 17, Chapter 8
- ARM 17.8 Subchapter 7
- ARM 17.8 Subchapter 8
- ARM 17.8 Subchapter 12
- ARM 17.8 Subchapter 17
- ARM 17.8 Subchapter 18
Nebraska
Verified against agency sourceNebraska Department of Water, Energy, and Environment (DWEE)
- Title 129
- Title 129, Chapter 3
- Title 129, Chapter 4
- Title 129, Chapter 6
- Title 129, Chapter 7
Nevada
Verified against agency sourceNevada Division of Environmental Protection (NDEP)
- NAC Chapter 445B
- NRS Chapter 445B
- NAC 445B.156
- NAC 445B.22037
- NAC 445B.288
- NAC 445B.327; 445B.3689
New Hampshire
Verified against agency sourceNew Hampshire Department of Environmental Services (NHDES)
- Env-A 600
- Env-A 618
- Env-A 619
New Jersey
Partially verifiedNew Jersey Department of Environmental Protection (NJDEP)
- N.J.A.C. 7:27-8
- N.J.A.C. 7:27-18
- N.J.A.C. 7:27-21
- N.J.A.C. 7:27-22
New Mexico
Verified against agency sourceNew Mexico Environment Department (NMED)
- 20.2.50 NMAC
- 20.2.70 NMAC
- 20.2.72 NMAC
- 20.2.73 NMAC
- 20.2.74 NMAC
- 20.2.79 NMAC
New York
Verified against agency sourceNew York State Department of Environmental Conservation (NYSDEC)
- 6 NYCRR Part 200
- 6 NYCRR Part 201
- 6 NYCRR Part 203
- 6 NYCRR Part 231
- 6 NYCRR Subpart 482-2
- 6 NYCRR Part 621
North Carolina
Verified against agency sourceNorth Carolina Department of Environmental Quality (NC DEQ)
- 15A NCAC 02Q
- 15A NCAC 02Q .0102
- 15A NCAC 02Q .0200
- 15A NCAC 02Q .0500
- 15A NCAC 02Q .0113
- 15A NCAC 02D .0202
North Dakota
Verified against agency sourceNorth Dakota Department of Environmental Quality (NDDEQ)
- NDAC Article 33.1-15
- NDAC 33.1-15-14
- NDAC 33.1-15-07
- NDAC 33.1-15-20
- NDAC 33.1-15-13
- NDAC 33.1-15-15
Ohio
Verified against agency sourceOhio Environmental Protection Agency (Ohio EPA)
- OAC Chapter 3745-31
- OAC 3745-31-03
- OAC 3745-31-29
- OAC 3745-31-30
- OAC 3745-15-05
- OAC Chapter 3745-77
Oklahoma
Verified against agency sourceOklahoma Department of Environmental Quality (DEQ)
- OAC 252:100
- OAC 252:100-7
- OAC 252:100-8
- OAC 252:100 Appendix H
- OAC 252:4-7
Oregon
Verified against agency sourceOregon Department of Environmental Quality (DEQ)
- OAR 340 Division 210
- OAR 340-216-8010, Table 1
- OAR 340-216-8020, Table 2
- OAR 340 Division 218
- OAR 340 Division 220
- OAR 340 Division 224
Pennsylvania
Partially verifiedPennsylvania Department of Environmental Protection (DEP)
- 25 Pa. Code Chapter 127
- 25 Pa. Code 127.14
- 25 Pa. Code 127.449
- 25 Pa. Code 127.701-127.710
- 25 Pa. Code 129.111-129.115
- 25 Pa. Code 121.1
Rhode Island
Verified against agency sourceRhode Island Department of Environmental Management (DEM)
- 250-RICR-120-05-9
- 250-RICR-120-05-28
- 250-RICR-120-05-29
South Carolina
Partially verifiedSouth Carolina Department of Environmental Services (SCDES)
- S.C. Regulation 61-62
- S.C. Regulation 61-62.1
- S.C. Regulation 61-62.5
- S.C. Regulation 61-62.70
South Dakota
Partially verifiedSouth Dakota Department of Agriculture and Natural Resources (DANR)
- ARSD Article 74:36
- ARSD 74:36:04
- ARSD 74:36:05
- ARSD 74:36:07
- ARSD 74:36:08
- ARSD 74:36:09
Tennessee
Verified against agency sourceTennessee Department of Environment and Conservation (TDEC)
- Tenn. Comp. R. & Regs. Chapter 1200-03
- Rule 1200-03-09
- Rule 1200-03-26
- Rule 1200-03-18
Texas
Verified against agency sourceTexas Commission on Environmental Quality (TCEQ)
- 30 TAC Chapter 39
- 30 TAC Chapter 101
- 30 TAC Chapter 106
- 30 TAC Chapter 111
- 30 TAC Chapter 112
- 30 TAC Chapter 113
Utah
Verified against agency sourceUtah Department of Environmental Quality (DEQ)
- R307-401
- R307-403
- R307-405
- R307-410
- R307-415
- R307-431
Vermont
Verified against agency sourceVermont Agency of Natural Resources, Department of Environmental Conservation (DEC)
- Vermont Air Pollution Control Regulations
- VAPCR §5-401
- VAPCR Subchapter V (§§5-501 to 5-504)
- VAPCR Subchapter X
- 10 V.S.A. §556
Virginia
Verified against agency sourceVirginia Department of Environmental Quality (DEQ)
- 9VAC5-80
- 9VAC5-80-1105
- 9VAC5-80 Article 6
- 9VAC5-85
Washington
Verified against agency sourceWashington State Department of Ecology
- Chapter 173-400 WAC
- WAC 173-400-110
- WAC 173-400-560
- Chapter 173-401 WAC
- Chapter 173-460 WAC
- WAC 173-455-031; 173-455-120
West Virginia
Verified against agency sourceWest Virginia Department of Environmental Protection (WVDEP)
- 45CSR13
- 45CSR14
- 45CSR19
- 45CSR22
- 45CSR30
- 45CSR6
Wisconsin
Verified against agency sourceWisconsin Department of Natural Resources (DNR)
- NR 405
- NR 406
- NR 407
- NR 408
- NR 410
- NR 445
Wyoming
Partially verifiedWyoming Department of Environmental Quality (DEQ)
- WAQSR Ch. 6, Sec. 2
- WAQSR Ch. 6, Sec. 3
- WAQSR Ch. 6, Sec. 4
- WAQSR Ch. 6, Sec. 13
- WAQSR Ch. 6, Sec. 14
- WAQSR Ch. 8, Sec. 6
Browse by category
- NSPSNew Source Performance Standards, 40 CFR Part 60
- NESHAPHazardous air pollutant standards, 40 CFR Parts 61 and 63
- Title VOperating permits, 40 CFR Parts 70 and 71
- NSRPreconstruction permitting programs
- PSDMajor NSR in attainment areas
- Nonattainment NSRMajor NSR in nonattainment areas
- Emission FactorsAP-42 and factor provenance
- Regulatory GuidanceGuidance indexes (in development)
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