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Data / Federal rules / Ozone

Federal rules on ozone: 659 since January 2024

334 final rules and 325 proposed rules since January 2, 2024, 2 of them marked significant. 4 are open for comment now. Most come from the Environmental Protection Agency (659).

SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.

Open for comment

The 500 newest documents

DocumentAgencyTypePublished
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Northwest Clean Air Agency, Washington State
2026-21383
Environmental Protection AgencyProposed ruleOct 19
Approval and Promulgation of Implementation Plans; Arizona; Revisions to the Cleaner Burning Gasoline, Winter Oxygenated Fuel, and Gasoline Set-Aside Programs
2026-21268
Environmental Protection AgencyFinal ruleOct 19
Air Plan Approval; Michigan; Clean Data Determination for the Berrien, MI and Muskegon, MI Areas for the 2015 Ozone Standards
2026-20736
Environmental Protection AgencyFinal ruleOct 9
Air Plan Approval; Kentucky; Louisville Area Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS
2026-20641
Environmental Protection AgencyFinal ruleOct 8
Approval and Promulgation of State Implementation Plans; New Jersey; RACT Certifications for the 2008 and 2015 Ozone National Ambient Air Quality Standards
2026-20638
Environmental Protection AgencyFinal ruleOct 8
Air Plan Approval; GA; Removal of Nonattainment Area New Source Review
2026-20636
Environmental Protection AgencyFinal ruleOct 8
Air Plan Approval; Maryland; Reasonably Available Control Technology for Municipal Waste Combustors
2026-20635
Environmental Protection AgencyFinal ruleOct 8
Air Plan Approval; Missouri; Construction Permit Exemptions
2026-20634
Environmental Protection AgencyFinal ruleOct 8
Air Quality Plan; Arizona; Maricopa County Air Quality Department; New Source Review; Emission Reduction Credits-Rule 204
2026-20612
Environmental Protection AgencyProposed ruleOct 8
Air Plan Approval; OR; Lane County Title 36 Rule
2026-20101
Environmental Protection AgencyProposed ruleOct 1
Air Plan Approval; Missouri; Control of NOX Emissions From Large Stationary Internal Combustion Engines
2026-20096
Environmental Protection AgencyFinal ruleOct 1
Air Plan Approval; Alabama; Transportation Conformity
2026-19566
Environmental Protection AgencyFinal ruleSep 24
Air Plan Approval; North Carolina; Charlotte-Rock Hill Area Maintenance Plan for the 2008 8-Hour Ozone NAAQS
2026-19495
Environmental Protection AgencyProposed ruleSep 23
Approval and Promulgation of Implementation Plans; California; San Joaquin Valley, Revisions to Motor Vehicle Emissions Budgets for Ozone
2026-18748
Environmental Protection AgencyFinal ruleSep 14
Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard
2026-18334
Environmental Protection AgencyFinal ruleSep 9
Air Plan Approval; Reconsideration and Repeal of Air Plan Partial Approval and Partial Disapproval of North Dakota's Regional Haze State Implementation Plan for the Second Implementation Period
2026-18290
Environmental Protection AgencyProposed ruleSep 9
Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure
2026-17503
Environmental Protection AgencyProposed ruleAug 27
Air Plan Approval; Kentucky; Cincinnati-Hamilton Area Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS
2026-17502
Environmental Protection AgencyProposed ruleAug 27
Air Plan Approval; Kentucky; Louisville Area Limited Maintenance Plan for the 1997 8-Hour Ozone NAAQS
2026-17501
Environmental Protection AgencyProposed ruleAug 27
Air Plan Approval; Oklahoma; Regional Haze Plan for the First Implementation Revision; Revision to State Implementation Plan and Requirements
2026-17499
Environmental Protection AgencyProposed ruleAug 27
Air Plan Approval; Arkansas; Regional Haze State Implementation Plan for the Second Implementation Period
2026-17494
Environmental Protection AgencyFinal ruleAug 27
Air Plan Approval; FL; Emissions Reporting Requirements and Permitting Forms
2026-17490
Environmental Protection AgencyFinal ruleAug 27
Air Plan Approval; Michigan; 2015 Ozone Moderate Reasonably Available Control Technology
2026-17486
Environmental Protection AgencyFinal ruleAug 27
Air Plan Approval; SC; Department Name Change
2026-16990
Environmental Protection AgencyFinal ruleAug 20
Air Plan Approval; Wisconsin; Moderate Attainment Plan Elements for Wisconsin's 2015 Ozone Standard Areas
2026-16986
Environmental Protection AgencyFinal ruleAug 20
Air Plan Approval; South Carolina; Minor Source Permit Program Revisions
2026-16937
Environmental Protection AgencyProposed ruleAug 19
Air Plan Approval; South Carolina; Minor Source Permit Program Revisions
2026-16930
Environmental Protection AgencyProposed ruleAug 19
Approval of Source-Specific Air Quality Implementation Plan; New York; Big Six Towers Inc.
2026-16627
Environmental Protection AgencyFinal ruleAug 14
Air Plan Approval; Virginia; 1997 8-Hour Ozone National Ambient Air Quality Standard Second Maintenance Plan for the Madison and Page Counties (Shenandoah National Park) Area
2026-16575
Environmental Protection AgencyProposed ruleAug 14
Air Plan Approval; Missouri; Moderate Attainment Plan Elements for the 2015 8-Hour Ozone Standard for the Missouri Portion of the St. Louis Nonattainment Area
2026-16571
Environmental Protection AgencyProposed ruleAug 14
Air Plan Approval; Iowa; Interstate Transport Requirements for the 2010 Sulfur Dioxide Standard
2026-16570
Environmental Protection AgencyProposed ruleAug 14
Air Plan Approval; Commonwealth of Virginia; Transfer of Authority and Requests for Certain Public Hearings on Air Permits
2026-16564
Environmental Protection AgencyProposed ruleAug 13
Air Plan Approval; Missouri; Clean Data Determination for the 2015 8-Hour Ozone Standard for the Missouri Portion of the St. Louis Nonattainment Area
2026-16515
Environmental Protection AgencyFinal ruleAug 13
Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard
2026-16514
Environmental Protection AgencyFinal ruleAug 13
Determination of Attainment by the Attainment Date; 1997 Ozone Standards; California; Coachella Valley
2026-16511
Environmental Protection AgencyFinal ruleAug 13
Air Quality Plan; Arizona; Maricopa County Air Quality Department; Gasoline Loading
2026-16335
Environmental Protection AgencyProposed ruleAug 11
Determination To Defer Sanctions; Arizona; Maricopa County Air Quality Department; Gasoline Loading
2026-16334
Environmental Protection AgencyFinal ruleAug 11
Response to Clean Air Act Section 176A Petition From New Hampshire
2026-16331
Environmental Protection AgencyProposed ruleAug 11
Air Plan Approval; New Hampshire; Repeal of Motor Vehicle Inspection and Maintenance Program
2026-16330
Environmental Protection AgencyProposed ruleAug 11
Air Plan Approval; Illinois; 2015 Ozone Moderate and Serious Reasonably Available Control Technology Update
2026-16001
Environmental Protection AgencyProposed ruleAug 6
Air Plan Approval; Connecticut; Plan for Inclusion of a Consent Order No. 8383-Algonquin Gas Transmission, LLC and Negative Declaration for Rubber Tire Manufacturing Sources
2026-15986
Environmental Protection AgencyFinal ruleAug 6
Air Plan Approval; Rhode Island; Update to Materials Incorporated by Reference
2026-15493
Environmental Protection AgencyFinal ruleJul 31
Air Plan Approval; California; San Joaquin Valley Air Pollution Control District
2026-15377
Environmental Protection AgencyFinal ruleJul 30
Air Plan Approval; Pennsylvania; Redesignation of the Warren County Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard
2026-15372
Environmental Protection AgencyProposed ruleJul 30
Air Plan Approval; Missouri; Construction Permit Exemptions
2026-15371
Environmental Protection AgencyProposed ruleJul 30
Clean Air Act Operating Permit Program Revisions; California; Amador County Air Pollution Control District, Calaveras County Air Pollution Control District, Great Basin Unified Air Pollution Control District, Northern Sierra Air Quality Management District
2026-15362
Environmental Protection AgencyProposed ruleJul 30
Air Plan Approval; Michigan; Redesignation of the Detroit, MI Area to Attainment of the 2015 Ozone Standards
2026-15168
Environmental Protection AgencyProposed ruleJul 28
Air Plan Approval; Michigan; Redesignation of the Berrien, MI and Muskegon, MI Areas to Attainment of the 2015 Ozone Standards
2026-15167
Environmental Protection AgencyProposed ruleJul 28
Approval and Promulgation of State Implementation Plans; New Jersey; RACT Certifications for the 2008 and 2015 Ozone National Ambient Air Quality Standards
2026-14923
Environmental Protection AgencyProposed ruleJul 23
Air Plan Approval; Pennsylvania; Revision to Source-Specific Reasonably Available Control Technology (RACT) Requirements
2026-14891
Environmental Protection AgencyProposed ruleJul 23
Air Plan Approval; Maine; Chapter 140: Part 70 Air Emission License Regulation
2026-14885
Environmental Protection AgencyFinal ruleJul 23
Air Plan Approval; Missouri; Control of Emissions During Petroleum Liquid Storage, Loading, and Transfer
2026-14880
Environmental Protection AgencyFinal ruleJul 23
Air Plan Approval; Pennsylvania; Interim Final Determination To Stay and Defer Sanctions Related to Reasonably Available Control Technology Requirements (RACT) for Volatile Organic Compounds (VOC) Control Technique Guidelines (CTG) Under the 2008 Ozone National Ambient Air Quality Standards (NAAQS)
2026-14326
Environmental Protection AgencyFinal ruleJul 16
Air Plan Approval; Pennsylvania; Reasonably Available Control Technology (RACT) for Volatile Organic Compounds (VOC) Control Technique Guidelines (CTG) Under the 2008 and 2015 Ozone National Ambient Air Quality Standards (NAAQS)
2026-14325
Environmental Protection AgencyProposed ruleJul 16
Air Plan Revisions; California; Antelope Valley Air Quality Management District; New Source Review; Stationary Source Permits
2026-14317
Environmental Protection AgencyFinal ruleJul 16
Air Plan Approval; Wisconsin; Source-Specific Air Quality Implementation Plan; Oak Creek Power Plant
2026-14282
Environmental Protection AgencyProposed ruleJul 15
Approval of Source-Specific Air Quality Implementation Plan; New York; Castleton Power, LLC
2026-14261
Environmental Protection AgencyProposed ruleJul 15
Air Plan Approval; Missouri; Control of NOX Emissions From Large Stationary Internal Combustion Engines
2026-14260
Environmental Protection AgencyProposed ruleJul 15
Approval and Promulgation of Implementation Plans; California; San Joaquin Valley; Revisions to Motor Vehicle Emissions Budgets for Ozone
2026-13845
Environmental Protection AgencyProposed ruleJul 9
Air Plan Approval; Alabama; Transportation Conformity
2026-13403
Environmental Protection AgencyProposed ruleJul 2
Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP Provisions
2026-13398
Environmental Protection AgencyFinal ruleJul 2
Air Plan Approval; Ohio; Redesignation of the Cleveland, OH Area to Attainment of the 2015 Ozone Standard
2026-13027
Environmental Protection AgencyFinal ruleJun 29
Air Quality Plan; California; Mojave Desert Air Quality Management District; Rescissions of Outdated Requirements Within Riverside County
2026-12935
Environmental Protection AgencyProposed ruleJun 26
Air Plan Approval; Ohio; Source-Specific Non-CTG RACT and SIP Strengthening for Ohio
2026-12921
Environmental Protection AgencyFinal ruleJun 26
Air Plan Approval; Ohio; Source-Specific Non-CTG RACT
2026-12920
Environmental Protection AgencyFinal ruleJun 26
Air Plan Approval; District of Columbia; Creation of Synthetic Minor Permit Program
2026-12898
Environmental Protection AgencyFinal ruleJun 26
Approval and Promulgation of Implementation Plans; Arizona; Revisions to the Cleaner Burning Gasoline, Winter Oxygenated Fuel, and Gasoline Set-Aside Programs
2026-12551
Environmental Protection AgencyProposed ruleJun 23
Air Plan Approval; Colorado; RACT Requirements for the 2008 8-Hour Ozone Standard for the Denver Metro/North Front Range Nonattainment Area
2026-12543
Environmental Protection AgencyProposed ruleJun 23
Air Plan Approval; OR; Update to Materials Incorporated by Reference
2026-12415
Environmental Protection AgencyFinal ruleJun 22
Ozone Reclassification State Implementation Plan Rule
2026-11843
Environmental Protection AgencyProposed ruleJun 12
Air Plan Approval; Connecticut; Ozone Ambient Air Quality Standard and Adhesive and Sealants Regulation Revisions
2026-11728
Environmental Protection AgencyFinal ruleJun 11
Approval and Promulgation of Air Quality Implementation Plans; Wyoming; Regional Haze Federal Implementation Plan
2026-11436
Environmental Protection AgencyProposed ruleJun 8
Clean Air Act Title V Operating Permit Program Revision; District of Columbia
2026-11170
Environmental Protection AgencyFinal ruleJun 4
Revisions of the Nonattainment Designation for the 2008 and 2015 Ozone Standards and Clean Data Determinations for the 2008 and 2015 Ozone Standards: Cecil County, MD and New Castle County, DE
2026-11169
Environmental Protection AgencyFinal ruleJun 4
Conditional Approval; Contingency Measure State Implementation Plan for the 2008 Ozone Standards; San Joaquin Valley, California
2026-11168
Environmental Protection AgencyFinal ruleJun 4
Air Plan Approval; Indiana; Keystone VOC RACT Alternative Control
2026-10776
Environmental Protection AgencyFinal ruleMay 29
Air Plan Approval; Pennsylvania; Revision to Philadelphia Gas Works, Richmond Plant Reasonably Available Control Technology Plan Under the 1997 8-Hour Ozone National Ambient Air Quality Standards
2026-10771
Environmental Protection AgencyFinal ruleMay 29
Approval of Source-Specific Air Quality Implementation Plan; New York; Calpine JFK Energy Center
2026-10770
Environmental Protection AgencyFinal ruleMay 29
Air Plan Approval; New York; Athens Generating Plant
2026-10769
Environmental Protection AgencyFinal ruleMay 29
Air Plan Approval; Michigan; Determination of Attainment by the Attainment Date for the 2015 Ozone Standards
2026-10767
Environmental Protection AgencyProposed ruleMay 29
Air Plan Approval; California; San Joaquin Valley Unified Air Pollution Control District; Ventura County Air Pollution Control District; South Coast Air Quality Management District; Oil and Gas Production; Volatile Organic Compounds
2026-10760
Environmental Protection AgencyFinal ruleMay 29
Air Plan Approval; Maryland; Clean Data Determination for the Baltimore, MD Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards
2026-10755
Environmental Protection AgencyFinal ruleMay 29
South Carolina; Approval of State Plan for Control of Emissions From Commercial and Industrial Solid Waste Incineration Units
2026-10744
Environmental Protection AgencyFinal ruleMay 29
Air Plan Approval; ID; Update to Materials Incorporated by Reference
2026-10738
Environmental Protection AgencyFinal ruleMay 29
Air Plan Approval; Ohio; Removal of Air Nuisance Rule
2026-10643
Environmental Protection AgencyProposed ruleMay 28
Approval of Source-Specific Air Quality Implementation Plan; New York; Big Six Towers Inc.
2026-10642
Environmental Protection AgencyProposed ruleMay 28
Air Plan Approval; Maryland; Reasonably Available Control Technology for Municipal Waste Combustors; Extension of Comment Period
2026-10638
Environmental Protection AgencyProposed ruleMay 28
Air Plan Revisions; Arizona; Arizona Department of Environmental Quality; Gila County Reasonably Available Control Technology
2026-10280
Environmental Protection AgencyFinal ruleMay 22
Air Plan Approval; FL; Emissions Reporting Requirements and Permitting Forms
2026-10207
Environmental Protection AgencyProposed ruleMay 21
Air Plan Approval; Montana; Revisions to Western Sugar Stipulation
2026-09619
Environmental Protection AgencyFinal ruleMay 14
Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements
2026-09616
Environmental Protection AgencyFinal ruleMay 14
Air Plan Approval; Ohio; Clean Data Determination for the Cleveland, Ohio Area for the 2015 Ozone Standard
2026-09614
Environmental Protection AgencyFinal ruleMay 14
Air Plan Approval; Illinois; Moderate Attainment Plan Elements for the Chicago and Metro East Areas for the 2015 Ozone Standard
2026-09613
Environmental Protection AgencyFinal ruleMay 14
Air Plan Approval; Indiana; Indiana NOX Emissions Monitoring
2026-09612
Environmental Protection AgencyFinal ruleMay 14
Air Plan Approval; NC; Removal of the State's Vehicle Inspection and Maintenance Program
2026-09146
Environmental Protection AgencyProposed ruleMay 8
Air Quality Plan; California; San Diego County Air Pollution Control District; Landfill Flares
2026-09055
Environmental Protection AgencyProposed ruleMay 7
Air Plan Approval; Delaware; Excess Emissions Provisions Pertaining to Periods of Startup, Shutdown and Malfunction Events
2026-08373
Environmental Protection AgencyProposed ruleApr 30
Utah; Northern Wasatch Front; 2015 8-Hour Ozone National Ambient Air Quality Standards; Reconsideration and Repeal of Finding of Failure To Attain and Reclassification to a Serious Nonattainment Area; Determination of Attainment by the Moderate Attainment Date But for International Emissions
2026-08372
Environmental Protection AgencyProposed ruleApr 30
Air Plan Approval; Maryland; Reasonably Available Control Technology for Municipal Waste Combustors
2026-08364
Environmental Protection AgencyProposed ruleApr 29
Air Plan Approval; Missouri; Control of Emissions During Petroleum Liquid Storage, Loading, and Transfer
2026-07906
Environmental Protection AgencyProposed ruleApr 23
Utah; Uinta Basin; 2015 8-Hour Ozone National Ambient Air Quality Standard; Reconsideration and Repeal of Finding of Failure To Attain and Reclassification to a Moderate Nonattainment Area; Extension of the Attainment Date and Determination of Attainment by the Marginal Attainment Date
2026-07904
Environmental Protection AgencyProposed ruleApr 23
Kentucky; Approval and Promulgation of State Plan for Designated Facilities and Pollutants; Control of Emissions From Existing Municipal Solid Waste Landfills
2026-07894
Environmental Protection AgencyProposed ruleApr 23
Finding of Failure To Attain and Reclassification of Tribal Portions of the Greater Connecticut Ozone Nonattainment Area as Serious for the 2015 Ozone National Ambient Air Quality Standards
2026-07889
Environmental Protection AgencyFinal ruleApr 23
Air Plan Approval; Missouri; Construction Permits Required
2026-07884
Environmental Protection AgencyFinal ruleApr 23
Air Plan Approval; Virginia; Amendment to the State Operating Permit for GP Big Island, LLC
2026-07527
Environmental Protection AgencyFinal ruleApr 17
Air Plan Revisions; Arizona; Maricopa County Air Quality Department; New Source Review; Emission Reduction Credits
2026-07405
Environmental Protection AgencyProposed ruleApr 16
Air Plan Approval; Arizona; Interstate Transport Requirements for the 2012 Fine Particulate Matter National Ambient Air Quality Standards
2026-07400
Environmental Protection AgencyFinal ruleApr 16
Air Plan Approval; Pennsylvania; Redesignation Request for the Allegheny County Area for the 2012 Annual Fine Particulate Matter Standard
2026-07399
Environmental Protection AgencyFinal ruleApr 16
Air Plan Approval; California; Eastern Kern Air Pollution Control District; Portland Cement Kilns
2026-07398
Environmental Protection AgencyFinal ruleApr 16
Air Plan Approval; Ohio; Redesignation of the Cleveland, OH Area to Attainment of the 2015 Ozone Standards
2026-06943
Environmental Protection AgencyProposed ruleApr 10
Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard
2026-06942
Environmental Protection AgencyProposed ruleApr 10
Air Plan Approval; Ohio; Source-Specific Non-CTG RACT for Ohio
2026-06940
Environmental Protection AgencyProposed ruleApr 10
Air Plan Approval; Rhode Island; Regional Haze State Implementation Plan for the Second Implementation Period; Prong 4 (Visibility) for the 2015 8-Hour Ozone National Ambient Air Quality Standard
2026-06838
Environmental Protection AgencyFinal ruleApr 9
Air Plan Approval; Colorado; Serious Attainment Plan Contingency Measures and RACT Requirements for the 2008 8-Hour Ozone National Ambient Air Quality Standards for the Denver Metro/North Front Range Nonattainment Area
2026-06837
Environmental Protection AgencyFinal ruleApr 9
Air Plan Approval; Missouri; Revisions to Existing Rule 10 CSR 10-5.570; Control of Sulfur Emissions From Stationary Boilers
2026-06832
Environmental Protection AgencyFinal ruleApr 9
Air Plan Approval; Missouri; Revisions to Existing Rule 10 CSR 10-5.570; Control of Sulfur Emissions From Stationary Boilers
2026-06831
Environmental Protection AgencyProposed ruleApr 9
Clean Air Act Operating Permit Program Revision; California; Monterey Bay Air Resources District
2026-06443
Environmental Protection AgencyProposed ruleApr 2
Air Plan Approval; Wisconsin; Moderate Attainment Plan Elements for Wisconsin's 2015 Ozone Standard Areas
2026-06442
Environmental Protection AgencyProposed ruleApr 2
Air Plan Approval; Ohio; Ohio Permit Rules Revisions
2026-06398
Environmental Protection AgencyFinal ruleApr 2
Air Plan Approval; Oregon; 2024 Vehicle Inspection Program Updates
2026-06388
Environmental Protection AgencyFinal ruleApr 2
Air Quality Plan; California; Mojave Desert Air Quality Management District; Replacing Outdated Requirements; Correction
2026-06386
Environmental Protection AgencyFinal ruleApr 2
Air Plan Approval; Connecticut; New Source Review Permit Program State Plan Revision
2026-06384
Environmental Protection AgencyFinal ruleApr 2
Approval and Promulgation of State Plans for Designated Facilities and Pollutants; West Virginia; Control of Emissions From Existing Municipal Solid Waste Landfills
2026-05637
Environmental Protection AgencyProposed ruleMar 23
Air Plan Revisions; California; Antelope Valley Air Quality Management District; New Source Review; Stationary Source Permits
2026-05636
Environmental Protection AgencyProposed ruleMar 23
Air Plan Approval; Texas; Reasonably Available Control Technology in the Dallas-Fort Worth Ozone Nonattainment Area
2026-05607
Environmental Protection AgencyFinal ruleMar 23
Determination of Attainment by the Attainment Date But for International Emissions for the 2015 Ozone National Ambient Air Quality Standards; Phoenix-Mesa Nonattainment Area, Arizona
2026-05601
Environmental Protection AgencyFinal ruleMar 23
Air Plan Approval; Texas; Reasonably Available Control Technology in the Houston-Galveston-Brazoria Ozone Nonattainment Area
2026-05596
Environmental Protection AgencyFinal ruleMar 23
Approval of Clean Air Plans; San Joaquin Valley, California; Contingency Measures for 1997 Ozone Standards
2026-05592
Environmental Protection AgencyFinal ruleMar 23
Air Plan Revisions; California; Mojave Desert Air Quality Management District; New Source Review; Stationary Source Permits
2026-05591
Environmental Protection AgencyFinal ruleMar 23
Air Plan Approval; Ohio; Volatile Organic Compounds RFD Beaufort
2026-05568
Environmental Protection AgencyFinal ruleMar 23
Air Plan Approval; New Hampshire; Single Source VOC RACT Order for Hutchinson Sealing Systems
2026-05567
Environmental Protection AgencyFinal ruleMar 23
Air Plan Approval; Connecticut; Revision to the State Implementation Plan for Inclusion of Consent Order No. 8383-Algonquin Gas Transmission, LLC and Negative Declaration for Rubber Tire Manufacturing Sources
2026-04991
Environmental Protection AgencyProposed ruleMar 13
Air Plan Approval; Michigan; Clean Data Determination for the Berrien, MI and Muskegon, MI Areas for the 2015 Ozone Standards
2026-04851
Environmental Protection AgencyProposed ruleMar 12
Air Plan Approval; North Dakota; Approval of Air Quality Implementation Plans; Regional Haze State Implementation Plan; Regional Haze Five Year Progress Report and Nitrogen Oxides Best Available Retrofit Technology Determination for Coal Creek Station for the First Implementation Period
2026-04649
Environmental Protection AgencyFinal ruleMar 10
Air Plan Approval; OR; Klamath Falls PM2.5 Redesignation to Attainment and Maintenance Plan
2026-04333
Environmental Protection AgencyProposed ruleMar 4
Air Plan Approval; AK; Regional Haze State Implementation Plan for the Second Implementation Period
2026-04159
Environmental Protection AgencyFinal ruleMar 3
Air Plan Approval; Michigan; 2015 Ozone Moderate Reasonably Available Control Technology
2026-03937
Environmental Protection AgencyProposed ruleFeb 27
Air Plan Approvals; Illinois; Regional Haze Plan for the Second Implementation Period; Interstate Transport of Air Pollution for the 2012 PM2.5 and 2015 Ozone NAAQS
2026-03936
Environmental Protection AgencyProposed ruleFeb 27
Air Plan Approval; Ohio; Clean Data Determination for the Cleveland, Ohio Area for the 2015 Ozone Standard
2026-03934
Environmental Protection AgencyProposed ruleFeb 27
Air Plan Approval; Indiana; Keystone VOC RACT Alternative Control
2026-03933
Environmental Protection AgencyProposed ruleFeb 27
Air Plan Approval; Ohio; Source-Specific Non-CTG RACT and SIP Strengthening for Ohio
2026-03931
Environmental Protection AgencyProposed ruleFeb 27
Air Plan Approval; Missouri; Reporting Emission Data, Emission Fees, and Process Information
2026-03888
Environmental Protection AgencyFinal ruleFeb 26
Air Plan Approval; Connecticut; State Implementation Plan Revisions Required as a Result of a Definition Change Due to the Ozone Reclassification
2026-03887
Environmental Protection AgencyFinal ruleFeb 26
Air Plan Approval; Michigan; Moderate Attainment Plan Elements for the Allegan County, Berrien County, and Muskegon County Areas for the 2015 Ozone Standard
2026-03880
Environmental Protection AgencyFinal ruleFeb 26
Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard
2026-03846
Environmental Protection AgencyProposed ruleFeb 26
Air Plan Approval; Missouri; Clean Data Determination for the 2015 8-Hour Ozone Standard for the Missouri Portion of the St. Louis Nonattainment Area
2026-03845
Environmental Protection AgencyProposed ruleFeb 26
Air Plan Revisions; Arizona; Arizona Department of Environmental Quality; Gila County Reasonably Available Control Technology
2026-02845
Environmental Protection AgencyProposed ruleFeb 12
Approval and Promulgation of Air Quality Implementation Plans; Oklahoma; Regional Haze State Implementation Plan for the Second Implementation Period
2026-02843
Environmental Protection AgencyProposed ruleFeb 12
Air Plan Approval; Illinois; Moderate Attainment Plan Elements for the Chicago and Metro East Areas for the 2015 Ozone Standard
2026-02842
Environmental Protection AgencyProposed ruleFeb 12
Air Plan Approval; Ohio; Second Maintenance Plan for 2008 Ozone NAAQS
2026-02822
Environmental Protection AgencyFinal ruleFeb 12
Air Plan Approval; AK; Updates to Materials Incorporated by Reference
2026-02478
Environmental Protection AgencyFinal ruleFeb 9
Air Plan Approval; Connecticut; Revised Format for Materials Incorporated by Reference
2026-02477
Environmental Protection AgencyFinal ruleFeb 9
Air Plan Approval; Pennsylvania; Proposed Revision to Philadelphia Gas Works, Richmond Plant Reasonably Available Control Technology Plan Under the 1997 8-Hour Ozone National Ambient Air Quality Standards
2026-02381
Environmental Protection AgencyProposed ruleFeb 6
Air Plan Revisions; California; Heavy-Duty Vehicle Inspection and Maintenance Program
2026-02350
Environmental Protection AgencyFinal ruleFeb 6
Approval and Promulgation of Air Quality Implementation Plans; Nevada; Regional Haze State Implementation Plan for the Second Implementation Period
2026-02344
Environmental Protection AgencyFinal ruleFeb 6
Interstate Transport Plan Review for the 2015 Ozone NAAQS
2026-01844 · significant
Environmental Protection AgencyProposed ruleJan 30
Air Plan Approval; Pennsylvania; Motor Vehicle Inspection and Maintenance Program Certification for Moderate Nonattainment Under the 2015 Ozone National Ambient Air Quality Standards
2026-01762
Environmental Protection AgencyFinal ruleJan 29
Air Plan Approval; OR; Lane County Permitting Rule Revisions
2026-01735
Environmental Protection AgencyFinal ruleJan 29
Determination of Attainment by the Attainment Date for the Louisville Moderate Area for the 2015 Ozone National Ambient Air Quality Standard
2026-01733
Environmental Protection AgencyProposed ruleJan 29
Air Plan Disapproval; Colorado; Regional Haze Plan for the Second Implementation Period
2026-01413
Environmental Protection AgencyFinal ruleJan 26
Air Plan Approval; Arkansas; Codification of the State Implementation Plan
2026-01410
Environmental Protection AgencyFinal ruleJan 26
Air Plan Approval; Indiana; Regional Haze Plan for the Second Implementation Period
2026-01406
Environmental Protection AgencyFinal ruleJan 26
Air Plan Approval; Montana; Revisions to Western Sugar Stipulation
2026-01324
Environmental Protection AgencyProposed ruleJan 23
Proposed Revisions of the Nonattainment Designation for the 2008 and 2015 Ozone Standards and Clean Data Determinations for the 2008 and 2015 Ozone Standards: Cecil County, MD and New Castle County, DE; Extension of Comment Period
2026-01319
Environmental Protection AgencyProposed ruleJan 23
Air Plan Approval; Maryland; Clean Data Determination for the Baltimore, MD Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards
2026-01314
Environmental Protection AgencyProposed ruleJan 23
Air Plan Approval; Ohio; 2015 Ozone Moderate Reasonably Available Control Technology
2026-01001
Environmental Protection AgencyFinal ruleJan 20
Determination of Attainment by the Attainment Date; 1997 Ozone Standards; California; Coachella Valley
2026-00782
Environmental Protection AgencyProposed ruleJan 15
Air Plan Approval; New York; Ortho Clinical Diagnostics
2026-00281
Environmental Protection AgencyFinal ruleJan 9
Air Plan Approval; Ohio; Ohio Permit Rules Revisions
2026-00258
Environmental Protection AgencyProposed ruleJan 9
Air Plan Approval; New Hampshire; Updates to Materials Incorporated by Reference
2026-00249
Environmental Protection AgencyFinal ruleJan 9
Clean Air Act Title V Operating Permit Program Revision; District of Columbia
2026-00215
Environmental Protection AgencyProposed ruleJan 8
Air Plan Approval; Missouri; Construction Permits Required
2026-00214
Environmental Protection AgencyProposed ruleJan 8
Air Plan Approval; California; Mojave Desert Air Quality Management District; Replacing Outdated Requirements
2026-00208
Environmental Protection AgencyFinal ruleJan 8
Air Plan Approval; California; Mojave Desert Air Quality Management District; Definition of Terms
2026-00194
Environmental Protection AgencyFinal ruleJan 8
Utah; Northern Wasatch Front; 2015 8-Hour Ozone Nonattainment Area Boundary Expansion and Applicability of Certain Clean Air Act Requirements
2026-00007
Environmental Protection AgencyFinal ruleJan 6
Air Plan Revision; California; Placer County Air Pollution Control District; New Source Review
2026-00006
Environmental Protection AgencyFinal ruleJan 6
Air Plan Approval; California; San Joaquin Valley Unified Air Pollution Control District
2026-00005
Environmental Protection AgencyFinal ruleJan 6
Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements; Withdrawal of Direct Final Rule
2026-00004
Environmental Protection AgencyFinal ruleJan 6
Proposed Revisions of the Nonattainment Designation for the 2008 and 2015 Ozone Standards and Clean Data Determinations for the 2008 and 2015 Ozone Standards: Cecil County, MD and New Castle County, DE
2025-24200
Environmental Protection AgencyProposed ruleJan 2
National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma
2025-24149
Environmental Protection AgencyFinal ruleJan 2
Air Plan Approval; Colorado; Revisions to Colorado Procedural Rules and Common Provisions Regulation
2025-24141
Environmental Protection AgencyFinal ruleJan 2
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Louisiana
2025-23284
Environmental Protection AgencyFinal ruleDec 18, 2025
Air Plan Approval; New Hampshire; Single Source VOC RACT Order for Hutchinson Sealing Systems
2025-22610
Environmental Protection AgencyProposed ruleDec 11, 2025
Air Plan Approval; Michigan; Moderate Attainment Plan Elements for the Allegan County, Berrien County, and Muskegon County Areas for the 2015 Ozone Standard
2025-22607
Environmental Protection AgencyProposed ruleDec 11, 2025
Air Plan Approval; Connecticut; Plan Submittals for the 2008 Ozone National Ambient Air Quality Standard
2025-22595
Environmental Protection AgencyFinal ruleDec 11, 2025
Air Plan Disapproval; Ohio; E-Check Attestation Provisions
2025-22594
Environmental Protection AgencyProposed ruleDec 11, 2025
Air Plan Approval; California; South Coast Air Quality Management District
2025-22584
Environmental Protection AgencyFinal ruleDec 11, 2025
Air Plan Approval; California; San Joaquin Valley Air Pollution Control District
2025-22530
Environmental Protection AgencyProposed ruleDec 11, 2025
Air Plan Approval; Arizona; Maricopa County Air Quality Department; Volatile Organic Compounds and Particulate Matter; Solvent Cleaning; Architectural Coatings; Incinerators, Burn-Off Ovens, and Crematories
2025-22517
Environmental Protection AgencyFinal ruleDec 11, 2025
Air Plan Approval; Texas and Oklahoma; Texas Regional Haze Plans for the First and Second Implementation Periods and Five-Year Progress Report; Oklahoma Regional Haze Plan for the First Implementation Period
2025-22002
Environmental Protection AgencyFinal ruleDec 5, 2025
Air Plan Approval; Connecticut; New Source Review Permit Program State Plan Revision
2025-21413
Environmental Protection AgencyProposed ruleNov 28, 2025
Air Plan Approval; Missouri; Reporting Emission Data, Emission Fees, and Process Information
2025-21346
Environmental Protection AgencyProposed ruleNov 28, 2025
Air Plan Approval; Montana; Regional Haze Plan for the Second Implementation Period
2025-21340
Environmental Protection AgencyFinal ruleNov 28, 2025
Air Plan Approval; Ohio; Emergency Episodes and Ambient Air Quality Standards
2025-21322
Environmental Protection AgencyFinal ruleNov 26, 2025
Air Plan Approval; Indiana; Second Maintenance Plan for 2008 Ozone NAAQS
2025-20672
Environmental Protection AgencyProposed ruleNov 21, 2025
Air Plan Approval; New York; Athens Generating Plant
2025-20499
Environmental Protection AgencyProposed ruleNov 20, 2025
Air Plan Approval; Maine; Chapter 140: Part 70 Air Emission License Regulation
2025-20498
Environmental Protection AgencyProposed ruleNov 20, 2025
Finding of Failure To Attain and Reclassification of Tribal Portions of the Greater Connecticut Ozone Nonattainment Area as Serious for the 2015 Ozone National Ambient Air Quality Standards
2025-20497
Environmental Protection AgencyProposed ruleNov 20, 2025
Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements
2025-20495
Environmental Protection AgencyFinal ruleNov 20, 2025
Air Plan Approval; Minnesota; Exempt Source SIP Revision
2025-20492
Environmental Protection AgencyFinal ruleNov 20, 2025
Air Plan Approval; Connecticut; Ozone Ambient Air Quality Standard and Adhesive and Sealants Regulation Revisions
2025-20463
Environmental Protection AgencyProposed ruleNov 20, 2025
Air Plan Approval; Rhode Island; Decommissioning of Stage II Vapor Recovery Systems
2025-20458
Environmental Protection AgencyFinal ruleNov 20, 2025
Air Plan Approval; South Carolina; Charlotte-Gastonia-Rock Hill Area Maintenance Plan for the 2008 8-Hour Ozone NAAQS
2025-20449
Environmental Protection AgencyFinal ruleNov 20, 2025
Air Plan Approval; Rhode Island; Regional Haze State Implementation Plan for the Second Implementation Period; Prong 4 (Visibility) for the 2015 8-Hour Ozone National Ambient Air Quality Standard
2025-20444
Environmental Protection AgencyProposed ruleNov 20, 2025
Air Plan Approval; District of Columbia; Creation of Synthetic Minor Permit Program
2025-20416
Environmental Protection AgencyProposed ruleNov 20, 2025
Air Plan Approval; AK; Regional Haze Plan for the Second Implementation Period; Extension of Comment Period
2025-20415
Environmental Protection AgencyProposed ruleNov 20, 2025
Air Plan Approval; Pennsylvania; Redesignation Request for the Allegheny County Area for the 2012 Annual Fine Particulate Matter Standard
2025-20409
Environmental Protection AgencyProposed ruleNov 20, 2025
Air Plan Approval; California; Eastern Kern Air Pollution Control District; Stationary Combustion Turbines
2025-20407
Environmental Protection AgencyFinal ruleNov 20, 2025
Determination of Attainment by the Attainment Date but for International Emissions for the 2015 Ozone National Ambient Air Quality Standards; Phoenix-Mesa Nonattainment Area, Arizona
2025-20357
Environmental Protection AgencyProposed ruleNov 19, 2025
Approval and Promulgation of Implementation Plans; State of Utah; Salt Lake City and Provo, Utah PM2.5 Redesignations to Attainment and Utah State Implementation Plan Revisions
2025-20352
Environmental Protection AgencyFinal ruleNov 19, 2025
Air Plan Approval; Colorado; Inspection and Maintenance Program Revision
2025-20205
Environmental Protection AgencyFinal ruleNov 18, 2025
Air Plan Approval; Montana: Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards
2025-20203
Environmental Protection AgencyFinal ruleNov 18, 2025
Air Plan Approval; Michigan; Revisions to Part 1 and 2 Rules
2025-20150
Environmental Protection AgencyFinal ruleNov 18, 2025
Air Plan Approval; Rhode Island; Amendments to Motor Vehicle Inspection and Maintenance Program
2025-20143
Environmental Protection AgencyFinal ruleNov 18, 2025
Air Plan Approval; Connecticut; 2014 and 2017 Periodic Emissions Inventory for 2008 8-Hour Ozone NAAQS
2025-20142
Environmental Protection AgencyFinal ruleNov 18, 2025
Air Plan Approval; Vermont; Regional Haze State Implementation Plan for the Second Implementation Period
2025-20141
Environmental Protection AgencyFinal ruleNov 18, 2025
Air Plan Approval; AK, Fairbanks North Star Borough; 2006 24-Hour PM2.5 Serious Area and 189(d) Plan
2025-20097
Environmental Protection AgencyFinal ruleNov 18, 2025
Air Plan Approval; Pennsylvania; Redesignation of the Beaver County Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard
2025-20096
Environmental Protection AgencyFinal ruleNov 18, 2025
Approval of Source-Specific Air Quality Implementation Plan; New York; Calpine JFK Energy Center
2025-19992
Environmental Protection AgencyProposed ruleNov 17, 2025
Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP Provisions
2025-19989
Environmental Protection AgencyProposed ruleNov 17, 2025
Approval of Clean Air Plans; San Joaquin Valley, California; Contingency Measures for 1997 Ozone Standards
2025-19884
Environmental Protection AgencyProposed ruleNov 14, 2025
Air Plan Approval; Utah; Interstate Transport of Air Pollution for the 2008 8-Hour Ozone National Ambient Air Quality Standard
2025-19824
Environmental Protection AgencyFinal ruleNov 10, 2025
Determination of Attainment by the Attainment Date; California; Mariposa County; 2015 8-Hour Ozone National Ambient Air Quality Standards
2025-19714
Environmental Protection AgencyFinal ruleOct 30, 2025
Air Plan Approval; AK; Regional Haze Plan for the Second Implementation Period
2025-19713
Environmental Protection AgencyProposed ruleOct 30, 2025
Air Plan Approval; Arizona; Interstate Transport Requirements for the 2012 Fine Particulate Matter National Ambient Air Quality Standard
2025-19638
Environmental Protection AgencyProposed ruleOct 23, 2025
Approval and Promulgation of Air Quality Implementation Plans; Nevada; Regional Haze State Implementation Plan for the Second Implementation Period
2025-19637
Environmental Protection AgencyProposed ruleOct 23, 2025
Approval and Promulgation of Air Quality Implementation Plans; West Virginia; Revisions to Regulation for Control of Ozone Season Nitrogen Oxide Emissions
2025-19238
Environmental Protection AgencyFinal ruleOct 2, 2025
Air Plan Approval; GA; Removal of Emissions Statements Requirement and Updates To Permit by Rule
2025-19228
Environmental Protection AgencyFinal ruleOct 2, 2025
Air Plan Approval; Alabama; Standards for Granting Permits and Major New Source Review Permit Rules
2025-19227
Environmental Protection AgencyFinal ruleOct 2, 2025
Air Plan Approval; GA; Updates to the Cross-State Air Pollution Rule
2025-19226
Environmental Protection AgencyFinal ruleOct 2, 2025
Air Plan Approval; North Carolina; Revisions to Regulations for Sulfur Dioxide Emissions From Combustion Sources
2025-19225
Environmental Protection AgencyFinal ruleOct 2, 2025
Air Plan Approval; Ohio; Volatile Organic Compounds RFD Beaufort
2025-18652
Environmental Protection AgencyProposed ruleSep 25, 2025
Air Plan Approval; California; San Joaquin Valley 1-Hour Ozone Area; Maintenance Plan and Redesignation Request
2025-18637
Environmental Protection AgencyFinal ruleSep 25, 2025
Finding of Failure To Attain the 1997 8-Hour Ozone Standards; California; San Joaquin Valley
2025-18636
Environmental Protection AgencyFinal ruleSep 25, 2025
Air Plan Approval; Virginia; Revision to the Regulatory Definition of Volatile Organic Compound
2025-18635
Environmental Protection AgencyProposed ruleSep 25, 2025
Air Plan Approval; Oregon; 2024 Vehicle Inspection Program Updates
2025-18629
Environmental Protection AgencyProposed ruleSep 25, 2025
Air Plan Approval; Delaware; Motor Vehicle Inspection and Maintenance Program Certification
2025-18626
Environmental Protection AgencyFinal ruleSep 25, 2025
Air Plan Approval; West Virginia; 2024 Amendments to West Virginia's Ambient Air Quality Standards
2025-18611
Environmental Protection AgencyFinal ruleSep 25, 2025
Air Plan Approval; Washington; Regional Haze State Implementation Plan for the Second Implementation Period
2025-18599
Environmental Protection AgencyFinal ruleSep 25, 2025
Utah; Northern Wasatch Front; 2015 8-Hour Ozone Nonattainment Area Boundary Expansion and Applicability of Certain Clean Air Act Requirements
2025-18569
Environmental Protection AgencyProposed ruleSep 25, 2025
Air Plan Approval; Missouri; Definitions and Common Reference Tables
2025-18568
Environmental Protection AgencyFinal ruleSep 25, 2025
Air Plan Approval; California; San Joaquin Valley Unified Air Pollution Control District
2025-17638
Environmental Protection AgencyProposed ruleSep 12, 2025
Air Plan Approval; California; Mojave Desert Air Quality Management District; Replacing Outdated Requirements
2025-17528
Environmental Protection AgencyProposed ruleSep 11, 2025
Air Plan Approval; Arizona; Maricopa County Air Quality Department; Volatile Organic Compounds; Architectural Coatings
2025-17500
Environmental Protection AgencyProposed ruleSep 11, 2025
Air Plan Approval; Montana; Regional Haze Plan for the Second Implementation Period; Prong 4 (Visibility) for the 2015 8-Hour Ozone National Ambient Air Quality Standard
2025-17499
Environmental Protection AgencyProposed ruleSep 11, 2025
Air Plan Revisions; Arizona; Maricopa County Air Quality Department; Volatile Organic Compounds; Solvent Cleaning
2025-17498
Environmental Protection AgencyProposed ruleSep 11, 2025
Air Plan Approval; Wyoming; R-35 Wyoming Air Quality Standards and Regulations Rule Package
2025-17486
Environmental Protection AgencyFinal ruleSep 11, 2025
Air Plan Approval; New Jersey; Memorandum of Agreement To Address NOX SIP Call Requirements
2025-17485
Environmental Protection AgencyFinal ruleSep 11, 2025
Air Plan Approval; Texas; Reasonably Available Control Technology in the Dallas-Fort Worth Ozone Nonattainment Area
2025-17081
Environmental Protection AgencyProposed ruleSep 5, 2025
Air Plan Approval; Texas; Reasonably Available Control Technology in the Houston-Galveston-Brazoria Ozone Nonattainment Area
2025-17080
Environmental Protection AgencyProposed ruleSep 5, 2025
Extension of the Attainment Date of the Coachella Valley Extreme Nonattainment Area Under the 1997 Ozone National Ambient Air Quality Standards
2025-17060
Environmental Protection AgencyFinal ruleSep 5, 2025
Air Plan Approval; OR; Lane County Permitting Rule Revisions
2025-17055
Environmental Protection AgencyProposed ruleSep 5, 2025
Air Plan Approval; ID; Regional Haze Plan for the Second Implementation Period
2025-17054
Environmental Protection AgencyFinal ruleSep 5, 2025
Approval of Air Quality Implementation Plans; California; Regional Haze State Implementation Plan for the Second Implementation Period
2025-17045
Environmental Protection AgencyFinal ruleSep 5, 2025
Air Plan Approval; Arkansas; Regional Haze State Implementation Plan for the Second Implementation Period
2025-17041
Environmental Protection AgencyProposed ruleSep 5, 2025
Air Plan Approval; Missouri; Control of Sulfur Dioxide Emissions and Approval and Promulgation of State Plan (Negative Declaration) for Designated Facilities and Pollutants
2025-17028
Environmental Protection AgencyFinal ruleSep 5, 2025
Air Plan Approval; GA; Removal of Nonattainment Area New Source Review
2025-16723
Environmental Protection AgencyProposed ruleSep 2, 2025
Air Plan Approval; Ohio; 2015 Ozone Moderate Reasonably Available Control Technology SIP
2025-16484
Environmental Protection AgencyProposed ruleAug 28, 2025
Air Plan Approval; Arkansas; Codification of the State Implementation Plan
2025-16483
Environmental Protection AgencyProposed ruleAug 28, 2025
Air Plan Approval; Pennsylvania; Motor Vehicle Inspection and Maintenance Program Certification for Moderate Nonattainment Under the 2015 Ozone National Ambient Air Quality Standards
2025-16482
Environmental Protection AgencyProposed ruleAug 28, 2025
Air Plan Approval; South Dakota; Regional Haze Plan for the Second Implementation Period
2025-16468
Environmental Protection AgencyFinal ruleAug 28, 2025
Air Plan Approval; California; Mojave Desert Air Quality Management District; Internal Combustion Engines
2025-16466
Environmental Protection AgencyFinal ruleAug 28, 2025
Air Plan Revisions; California; Heavy-Duty Vehicle Inspection and Maintenance Program
2025-16325
Environmental Protection AgencyProposed ruleAug 26, 2025
Florida; Approval of State Plan for Control of Emissions From Commercial and Industrial Solid Waste Incineration Units
2025-16193
Environmental Protection AgencyFinal ruleAug 25, 2025
Air Plan Approval; WA; Update to Materials Incorporated by Reference
2025-15992
Environmental Protection AgencyFinal ruleAug 21, 2025
Determination of Attainment by the Attainment Date; 2008 8-Hour Ozone Standards; California; Sacramento Metro Area
2025-15990
Environmental Protection AgencyFinal ruleAug 21, 2025
Air Plan Approval; California; Revised Format for Materials Incorporated by Reference
2025-15989
Environmental Protection AgencyFinal ruleAug 21, 2025
Air Plan Approval; Alabama; Standards for Granting Permits and Major New Source Review Permit Rules
2025-15987
Environmental Protection AgencyProposed ruleAug 21, 2025
Air Plan Approval; GA; Removal of Emissions Statements Requirement and Updates To Permit by Rule
2025-15986
Environmental Protection AgencyProposed ruleAug 21, 2025
Air Plan Approval; Arizona; Maricopa County Air Quality Department; Petroleum Solvent Dry Cleaning
2025-15984
Environmental Protection AgencyProposed ruleAug 21, 2025
Air Plan Approval; North Carolina; Removal of Emissions Exemptions
2025-15557
Environmental Protection AgencyProposed ruleAug 15, 2025
Air Plan Approval; GA; Updates to the Cross-State Air Pollution Rule
2025-15461
Environmental Protection AgencyProposed ruleAug 14, 2025
Air Plan Approval; Rhode Island; Decommissioning of Stage II Vapor Recovery Systems
2025-15459
Environmental Protection AgencyProposed ruleAug 14, 2025
Approval and Promulgation of State Implementation Plans; New York; Emission Statement Certification of the 2008 and 2015 Ozone National Ambient Air Quality Standards
2025-15443
Environmental Protection AgencyFinal ruleAug 14, 2025
Air Plan Approval; IA; Alter Metal Recycling Permit Modification
2025-15442
Environmental Protection AgencyFinal ruleAug 14, 2025
Air Plan Approval; Oregon; Lane Regional Air Protection Agency, Outdoor Burning
2025-15441
Environmental Protection AgencyFinal ruleAug 14, 2025
Air Plan Approval; Missouri; Removal of Obsolete Rules on Control of NOX Emissions
2025-15440
Environmental Protection AgencyFinal ruleAug 14, 2025
Air Plan Approval; Wyoming; Revisions to Regional Haze State Implementation Plan
2025-14983
Environmental Protection AgencyFinal ruleAug 7, 2025
Air Plan Approval; Colorado; Inspection and Maintenance Program Revision
2025-14982
Environmental Protection AgencyProposed ruleAug 7, 2025
Air Plan Approval; OR; Update to Materials Incorporated by Reference
2025-14971
Environmental Protection AgencyFinal ruleAug 7, 2025
Air Plan Approval; IA; Regional Haze State Implementation Plan for the Second Implementation Period
2025-14850
Environmental Protection AgencyFinal ruleAug 5, 2025
Air Plan Approval; California; South Coast Air Quality Management District
2025-14528
Environmental Protection AgencyProposed ruleJul 31, 2025
Finding of Failure To Attain and Reclassification of Area in New York as Serious for the 2015 Ozone National Ambient Air Quality Standards-Shinnecock Indian Nation
2025-14472
Environmental Protection AgencyFinal ruleJul 31, 2025
Air Plan Approval; Rhode Island; Amendments to Motor Vehicle Inspection and Maintenance Program
2025-14105
Environmental Protection AgencyProposed ruleJul 28, 2025
Air Plan Approval; Washington; Regional Haze State Implementation Plan for the Second Implementation Period
2025-13957
Environmental Protection AgencyProposed ruleJul 24, 2025
Air Plan Approval; Pennsylvania; Redesignation of the Beaver County Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard
2025-13946
Environmental Protection AgencyProposed ruleJul 24, 2025
Air Plan Approval; New York; Ortho Clinical Diagnostics
2025-13937
Environmental Protection AgencyProposed ruleJul 24, 2025
Air Plan Approval; Texas; Reasonably Available Control Technology in the Dallas-Fort Worth Ozone Nonattainment Area
2025-13930
Environmental Protection AgencyProposed ruleJul 24, 2025
Air Plan Revisions; California; Mojave Desert Air Quality Management District; New Source Review; Stationary Source Permits
2025-13906
Environmental Protection AgencyProposed ruleJul 24, 2025
Interim Final Determination To Stay or Defer Sanctions; California; Mojave Desert Air Quality Management District
2025-13905
Environmental Protection AgencyFinal ruleJul 24, 2025
Air Plan Approval; Texas; Reasonably Available Control Technology in the Houston-Galveston-Brazoria Ozone Nonattainment Area
2025-13904
Environmental Protection AgencyProposed ruleJul 24, 2025
Air Plan Approval; Pennsylvania; Redesignation Request and Associated Maintenance Plan for the Liberty-Clairton Area for the 1997 Annual and 2006 24-Hour Fine Particulate Matter Standard and Maintenance Plan for the Allegheny County Area for the 2012 Annual Fine Particulate Matter Standard
2025-13893
Environmental Protection AgencyFinal ruleJul 24, 2025
Air Plan Approval; Connecticut; Plan for Inclusion of a Consent Order and Removal of State Orders
2025-13886
Environmental Protection AgencyFinal ruleJul 24, 2025
Air Plan Partial Approval and Partial Disapproval; Colorado; Regional Haze Plan for the Second Implementation Period
2025-13342
Environmental Protection AgencyProposed ruleJul 16, 2025
Air Quality State Implementation Plans; Approval and Promulgations: Montana: Infrastructure Requirements for the 2015 Ozone National Ambient Air Quality Standards
2025-13341
Environmental Protection AgencyProposed ruleJul 16, 2025
Air Plan Approval; State of Utah; Utah PM2.5 State Implementation Plan Revisions
2025-13337
Environmental Protection AgencyProposed ruleJul 16, 2025
Air Plan Approval; Connecticut; 2017 Base Year Emissions Inventory for the 2015 8-Hour Ozone National Ambient Air Quality Standards
2025-13331
Environmental Protection AgencyFinal ruleJul 16, 2025
Air Plan Approval; Minnesota; Exempt Source SIP Revision
2025-13327
Environmental Protection AgencyProposed ruleJul 16, 2025
Air Plan Approval; Connecticut; State Implementation Plan Revisions Required as a Result of a Definition Change Due to the Ozone Reclassification
2025-13324
Environmental Protection AgencyProposed ruleJul 16, 2025
Air Plan Approval; California; Mojave Desert Air Quality Management District; Definition of Terms
2025-12867
Environmental Protection AgencyProposed ruleJul 10, 2025
Finding of Failure To Attain the 1997 8-Hour Ozone Standards; California; San Joaquin Valley
2025-12856
Environmental Protection AgencyProposed ruleJul 10, 2025
National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma
2025-12800
Environmental Protection AgencyProposed ruleJul 10, 2025
Air Plan Approval; Missouri; Control of Emissions During Petroleum Liquid Storage, Loading, and Transfer
2025-12798
Environmental Protection AgencyFinal ruleJul 10, 2025
Air Plan Approval; Ohio; Regional Haze Plan for the Second Implementation Period
2025-12526
Environmental Protection AgencyFinal ruleJul 8, 2025
Air Plan Approval; Florida; Revisions to Stationary Sources-Removal of Clean Air Interstate Rule Provisions
2025-12602
Environmental Protection AgencyFinal ruleJul 7, 2025
Air Plan Approval; California; Revised Format for Nonregulatory Provisions
2025-12586
Environmental Protection AgencyFinal ruleJul 7, 2025
Air Plan Approval; West Virginia; Regional Haze State Implementation Plan for the Second Implementation Period
2025-12527
Environmental Protection AgencyFinal ruleJul 7, 2025
Air Plan Approval; Connecticut; 2014 and 2017 Periodic Emissions Inventory for 2008 8-Hour Ozone NAAQS
2025-12515
Environmental Protection AgencyProposed ruleJul 7, 2025
Air Plan Approval; Ohio; Moderate Attainment Plan Elements for the Cleveland Area for the 2015 Ozone Standard
2025-12512
Environmental Protection AgencyFinal ruleJul 7, 2025
Air Plan Approval; Missouri; Control of Sulfur Dioxide Emissions and Approval and Promulgation of State Plan (Negative Declaration) for Designated Facilities and Pollutants
2025-11825
Environmental Protection AgencyProposed ruleJun 27, 2025
Air Plan Approval; Idaho; Update to Materials Incorporated by Reference
2025-11824
Environmental Protection AgencyFinal ruleJun 27, 2025
Air Plan Approval; Missouri; Definitions and Common Reference Tables
2025-11821
Environmental Protection AgencyProposed ruleJun 27, 2025
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Louisiana
2025-11341
Environmental Protection AgencyProposed ruleJun 23, 2025
Finding of Failure To Attain for the Missouri Portion of the St. Louis Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards
2025-11304
Environmental Protection AgencyProposed ruleJun 20, 2025
Determination To Defer Sanctions; California; Eastern Kern Air Pollution Control District; Stationary Combustion Turbines
2025-11283
Environmental Protection AgencyFinal ruleJun 20, 2025
Air Plan Approval; California; Eastern Kern Air Pollution Control District; Stationary Combustion Turbines
2025-11281
Environmental Protection AgencyProposed ruleJun 20, 2025
Air Plan Approval; Texas and Oklahoma; Texas Regional Haze Plans for the First and Second Implementation Periods and Five-Year Progress Report; Oklahoma Regional Haze Plan for the First Implementation Period; Extension of Comment Period
2025-11272
Environmental Protection AgencyProposed ruleJun 20, 2025
National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma
2025-11265
Environmental Protection AgencyFinal ruleJun 20, 2025
Air Plan Approval; Colorado; Interim Final Determination to Stay and Defer Sanctions in the Denver Metro/North Front Range 2008 Ozone Nonattainment Area
2025-11266
Environmental Protection AgencyFinal ruleJun 18, 2025
Air Plan Approval; Colorado; Serious Attainment Plan RACT Requirements for the 2008 8-Hour Ozone National Ambient Air Quality Standards for the Denver Metro/North Front Range Nonattainment Area
2025-11263
Environmental Protection AgencyProposed ruleJun 18, 2025
Approval of Air Quality Implementation Plans; California; Regional Haze State Implementation Plan for the Second Implementation Period
2025-11261
Environmental Protection AgencyProposed ruleJun 18, 2025
Air Plan Approval; Indiana; Regional Haze Plan for the Second Implementation Period
2025-11259
Environmental Protection AgencyProposed ruleJun 18, 2025
Air Plan Approval; Utah; Interstate Transport of Air Pollution for the 2008 8-Hour Ozone National Ambient Air Quality Standard
2025-11250
Environmental Protection AgencyProposed ruleJun 18, 2025
Air Plan Approval; West Virginia; 2024 Amendments to West Virginia's Ambient Air Quality Standards
2025-10548
Environmental Protection AgencyProposed ruleJun 11, 2025
Approval and Promulgation of Air Quality Implementation Plans; West Virginia; Revisions to Regulation for Control of Ozone Season Nitrogen Oxide Emissions
2025-10547
Environmental Protection AgencyProposed ruleJun 11, 2025
Air Plan Approval; Delaware; Motor Vehicle Inspection and Maintenance Program Certification
2025-10546
Environmental Protection AgencyProposed ruleJun 11, 2025
Air Plan Approval; Arizona; Maricopa County Air Quality Department; Correction
2025-10541
Environmental Protection AgencyFinal ruleJun 11, 2025
Determination To Defer Sanctions; California; Eastern Kern Air Pollution Control District; Portland Cement Kilns
2025-10037
Environmental Protection AgencyFinal ruleJun 4, 2025
Air Plan Approval; California; Eastern Kern Air Pollution Control District; Portland Cement Kilns
2025-10036
Environmental Protection AgencyProposed ruleJun 4, 2025
Air Plan Approval; California; Revised Format for Materials Incorporated by Reference
2025-10000
Environmental Protection AgencyFinal ruleJun 4, 2025
Air Plan Approval; IA; Alter Metal Recycling Permit Modification
2025-10038
Environmental Protection AgencyProposed ruleJun 3, 2025
Determination of Attainment by the Attainment Date; California; Mariposa County; 2015 8-Hour Ozone National Ambient Air Quality Standards
2025-09999
Environmental Protection AgencyProposed ruleJun 3, 2025
Air Plan Approval; New Jersey; Memorandum of Agreement To Address NOX SIP Call Requirements
2025-09996
Environmental Protection AgencyProposed ruleJun 3, 2025
Air Plan Approval; Oregon; Lane Regional Air Protection Agency, Outdoor Burning
2025-09324
Environmental Protection AgencyProposed ruleMay 23, 2025
Air Plan Approval; Texas and Oklahoma; Texas Regional Haze Plans for the First and Second Implementation Periods and Five-Year Progress Report; Oklahoma Regional Haze Plan for the First Implementation Period
2025-09293
Environmental Protection AgencyProposed ruleMay 23, 2025
Air Plan Approval; Vermont; Regional Haze State Implementation Plan for the Second Implementation Period
2025-09274
Environmental Protection AgencyProposed ruleMay 23, 2025
Emissions Budget and Allowance Allocations for Indiana Under the Revised Cross-State Air Pollution Rule Update
2025-08964
Environmental Protection AgencyFinal ruleMay 20, 2025
Air Plan Approval; California; Mojave Desert Air Quality Management District; Oxides of Nitrogen
2025-08875
Environmental Protection AgencyFinal ruleMay 19, 2025
Air Plan Approval; Texas; New Source Review Updates for Project Emissions Accounting
2025-08734
Environmental Protection AgencyFinal ruleMay 19, 2025
Air Plan Approval; Ohio; Second Maintenance Plan for 2008 Ozone NAAQS
2025-08728
Environmental Protection AgencyProposed ruleMay 19, 2025
Air Plan Approval; South Dakota; Regional Haze Plan for the Second Implementation Period
2025-08072
Environmental Protection AgencyProposed ruleMay 14, 2025
Air Plan Approval; Alabama; Administrative Corrections and VOC Definition
2025-08091
Environmental Protection AgencyFinal ruleMay 9, 2025
Air Plan Approval; WA; Southwest Clean Air Agency; Revisions to Excess Emissions, Startup, Shutdown, and General Requirements
2025-07846
Environmental Protection AgencyFinal ruleMay 9, 2025
Air Quality Plans; California; Tehama County Air Pollution Control District; New Source Review
2025-08087
Environmental Protection AgencyFinal ruleMay 8, 2025
Approval and Promulgation of State Implementation Plans; New York; Emission Statement Certification of the 2008 and 2015 Ozone National Ambient Air Quality Standards
2025-08077
Environmental Protection AgencyProposed ruleMay 8, 2025
Air Plan Approval; Missouri; Control of Emissions During Petroleum Liquid Storage, Loading, and Transfer
2025-08074
Environmental Protection AgencyProposed ruleMay 8, 2025
Air Plan Approval; Colorado; Interim Final Determination To Stay and Defer Sanctions in the Denver Metro/North Front Range 2008 Ozone Nonattainment Area
2025-07938
Environmental Protection AgencyFinal ruleMay 8, 2025
Air Plan Approval; Colorado; Serious Attainment Plan Contingency Measures for the 2008 8-Hour Ozone National Ambient Air Quality Standards for the Denver Metro/North Front Range Nonattainment Area
2025-07937
Environmental Protection AgencyProposed ruleMay 8, 2025
Air Plan Approval; Missouri; Removal of Obsolete Rules on Control of NOX Emissions
2025-07259
Environmental Protection AgencyProposed ruleApr 29, 2025
Air Plan Approval; Kansas; Annual Emission Inventory and Fees
2025-07261
Environmental Protection AgencyFinal ruleApr 28, 2025
Air Plan Approval; Pennsylvania; Redesignation of the Allegheny County Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard
2025-07255
Environmental Protection AgencyFinal ruleApr 28, 2025
Air Plan Approval; Wisconsin; Revised Format for Materials Incorporated by Reference
2025-06618
Environmental Protection AgencyFinal ruleApr 22, 2025
Air Plan Approval; Connecticut; State Implementation Plan Revisions Required by the 2015 Ozone NAAQS
2025-06610
Environmental Protection AgencyFinal ruleApr 22, 2025
Air Plan Approval; Indiana; Indiana NOX Emissions Monitoring
2025-06617
Environmental Protection AgencyProposed ruleApr 21, 2025
Air Plan Approval; West Virginia; Regional Haze State Implementation Plan for the Second Implementation Period
2025-06608
Environmental Protection AgencyProposed ruleApr 18, 2025
Air Plan Approval; Ohio; Volatile Organic Compounds
2025-06604
Environmental Protection AgencyFinal ruleApr 17, 2025
Air Plan Approval; Washington; Spokane Regional Clean Air Agency, General Air Quality Regulations
2025-06247
Environmental Protection AgencyFinal ruleApr 16, 2025
Air Plan Approval; Texas; Vehicle Inspection and Maintenance Plan for Bexar County
2025-05928
Environmental Protection AgencyFinal ruleApr 8, 2025
Air Plan Approval; Pennsylvania; Redesignation Request and Associated Maintenance Plan for the Liberty-Clairton Area for the 1997 Annual and 2006 24-Hour Fine Particulate Matter Standard and Maintenance Plan for the Allegheny County Area for the 2012 Annual Fine Particulate Matter Standard
2025-05921
Environmental Protection AgencyProposed ruleApr 7, 2025
Air Plan Approval; Connecticut; 2017 Base Year Emissions Inventory for the 2015 8-Hour Ozone National Ambient Air Quality Standards
2025-05910
Environmental Protection AgencyProposed ruleApr 7, 2025
Air Plan Approval; District of Columbia, Maryland, Virginia; Determination of Attainment by the Attainment Date and Clean Data Determination for the Washington, DC-MD-VA Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards
2025-05913
Environmental Protection AgencyFinal ruleApr 4, 2025
Approval of Source-Specific Air Quality Implementation Plan; New York; Lehigh Cement Company LLC
2025-05372
Environmental Protection AgencyFinal ruleApr 3, 2025
Interim Final Determination To Defer Sanctions, Placer County Air Pollution Control District
2025-05376
Environmental Protection AgencyFinal ruleApr 2, 2025
Air Plan Revision; California; Placer County Air Pollution Control District; New Source Review
2025-05375
Environmental Protection AgencyProposed ruleApr 2, 2025
Air Plan Approval; Connecticut; Approval of State Implementation Plan Requirements for the 2008 Ozone Standard
2025-05378
Environmental Protection AgencyFinal ruleApr 1, 2025
Air Plan Approval; Florida; Revisions to Stationary Sources-Removal of Clean Air Interstate Rule Provisions
2025-05382
Environmental Protection AgencyProposed ruleMar 28, 2025
Interim Final Determination To Stay or Defer Sanctions; California; Antelope Valley Air Quality Management District
2025-05157
Environmental Protection AgencyFinal ruleMar 26, 2025
Air Plan Revisions; California; Antelope Valley Air Quality Management District; New Source Review; Stationary Source Permits
2025-05156
Environmental Protection AgencyProposed ruleMar 26, 2025
Air Plan Approval; New York; Knowlton Technologies LLC
2025-04910
Environmental Protection AgencyFinal ruleMar 24, 2025
Air Plan Approval; AK, Fairbanks North Star Borough; 2006 24-Hour PM2.5 Serious Area and 189(d) Plan
2025-04908
Environmental Protection AgencyProposed ruleMar 24, 2025
Air Plan Approval; ID; Regional Haze Plan for the Second Implementation Period
2025-04906
Environmental Protection AgencyProposed ruleMar 24, 2025
Determination of Attainment by the Attainment Date; 2008 8-Hour Ozone Standards; California; Sacramento Metro Area
2025-04791
Environmental Protection AgencyProposed ruleMar 21, 2025
Interim Final Determination To Stay and Defer Sanctions; California; Sacramento Metro Area
2025-04790
Environmental Protection AgencyFinal ruleMar 21, 2025
Air Plan Revisions; California; Feather River Air Quality Management District
2025-04041
Environmental Protection AgencyFinal ruleMar 19, 2025
Air Plan Approval; California; Eastern Kern Air Pollution Control District; Tehama County Air Pollution Control District; San Diego County Air Pollution Control District; Emissions Statement Requirements
2025-04036
Environmental Protection AgencyFinal ruleMar 18, 2025
Extension of the Attainment Date of the Coachella Valley Extreme Nonattainment Area Under the 1997 Ozone National Ambient Air Quality Standards
2025-04035
Environmental Protection AgencyProposed ruleMar 17, 2025
Air Plan Approval; SC; Updates to the Cross-State Air Pollution Rule
2025-03609
Environmental Protection AgencyFinal ruleMar 7, 2025
Air Plan Approval; Alabama; Administrative Corrections and VOC Definition
2025-03608
Environmental Protection AgencyProposed ruleMar 7, 2025
Air Plan Revisions; California Air Plan Revisions; San Joaquin Valley Unified Air Pollution Control District; Stationary Source Permits
2025-01220
Environmental Protection AgencyProposed ruleJan 21, 2025
Interim Final Determination To Defer Sanctions, San Joaquin Valley Unified Air Pollution Control District
2025-01215
Environmental Protection AgencyFinal ruleJan 21, 2025
Approval and Promulgation of Implementation Plans; State of California; Coachella Valley; Extreme Attainment Plan for 1997 8-Hour Ozone Standards
2025-01110
Environmental Protection AgencyFinal ruleJan 21, 2025
Air Plan Disapproval; West Virginia; Regional Haze State Implementation Plan for the Second Implementation Period
2025-01101
Environmental Protection AgencyProposed ruleJan 21, 2025
Air Plan Approval; Ohio; Withdrawal of Technical Amendment
2025-00968
Environmental Protection AgencyFinal ruleJan 21, 2025
Air Plan Partial Approval and Partial Disapproval; South Carolina; Minor Source Permit Program Revisions
2025-00438
Environmental Protection AgencyProposed ruleJan 21, 2025
Air Plan Approval; AK; Updates to Materials Incorporated by Reference
2025-01120
Environmental Protection AgencyFinal ruleJan 17, 2025
Air Plan Approval; Washington; Olympic Region Clean Air Agency, Recreational Fires
2025-00559
Environmental Protection AgencyFinal ruleJan 17, 2025
State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards
2025-00336
Environmental Protection AgencyFinal ruleJan 17, 2025
Revisions to the Federal Implementation Plan for the Billings/Laurel, Montana, Sulfur Dioxide Area
2025-00220
Environmental Protection AgencyFinal ruleJan 17, 2025
Reference Measurement Principle and Calibration Procedure for the Measurement of Ozone in the Atmosphere (Chemiluminescence Method); Correction
2025-00946
Environmental Protection AgencyFinal ruleJan 16, 2025
Air Plan Approval; Montana; Missoula, Montana Oxygenated Fuels Program Removal, Carbon Monoxide, Limited Maintenance Plan
2025-00380
Environmental Protection AgencyFinal ruleJan 16, 2025
Air Plan Approval; Arizona; Maricopa County Air Quality Department
2024-31701
Environmental Protection AgencyFinal ruleJan 16, 2025
Air Plan Approval; Kansas; Annual Emission Inventory and Fees
2024-31626
Environmental Protection AgencyProposed ruleJan 15, 2025
Air Plan Revisions; Arizona; Maricopa County Air Quality Department
2024-31028
Environmental Protection AgencyFinal ruleJan 10, 2025
Interim Final Determination To Defer Sanctions; AK, Fairbanks North Star Borough
2024-30649
Environmental Protection AgencyFinal ruleJan 8, 2025
Air Plan Approval; AK, Fairbanks North Star Borough; 2006 24-Hour PM2.5 Serious Area and 189(d) Plan
2024-30648
Environmental Protection AgencyProposed ruleJan 8, 2025
Air Plan Approval; Ohio; Moderate Attainment Plan Elements for the Cleveland Area for the 2015 Ozone Standard
2024-30717
Environmental Protection AgencyProposed ruleJan 3, 2025
Air Plan Revisions; California; Feather River Air Quality Management District
2024-31396
Environmental Protection AgencyFinal ruleDec 31, 2024
Federal Implementation Plan for Nonattainment New Source Review Program; Mojave Desert Air Quality Management District, California
2024-30513
Environmental Protection AgencyFinal ruleDec 30, 2024
Outer Continental Shelf Air Regulations; Amendment to State Requirements Incorporated by Reference; Massachusetts
2024-30800
Environmental Protection AgencyFinal ruleDec 27, 2024
Air Plan Approval; KY; Revisions to Jefferson County Control of Open Burning
2024-30741
Environmental Protection AgencyFinal ruleDec 27, 2024
Air Plan Approval; Indiana; Update to CFR References
2024-30729
Environmental Protection AgencyFinal ruleDec 27, 2024
Air Plan Approval; Revisions to Colorado Common Provisions Regulation
2024-30695
Environmental Protection AgencyFinal ruleDec 27, 2024
Air Plan Approval; WA; Excess Emissions, Startup, Shutdown, and Malfunction Revisions, Energy Facility Site Evaluation Council
2024-30536
Environmental Protection AgencyFinal ruleDec 27, 2024
Approval of Source-Specific Air Quality Implementation Plan; New York; Lehigh Cement Company LLC
2024-30582
Environmental Protection AgencyProposed ruleDec 26, 2024
Approval and Promulgation of Air Quality Implementation Plans; Maryland; Nitrogen Oxides Ozone Season Emissions Caps for Non-Trading Large Nitrogen Oxides Units; Amendments
2024-30534
Environmental Protection AgencyProposed ruleDec 26, 2024
Air Plan Approval; California; Mojave Desert Air Quality Management District; Oxides of Nitrogen
2024-30413
Environmental Protection AgencyProposed ruleDec 26, 2024
Determination To Defer Sanctions; California; Mojave Desert Air Quality Management District
2024-30409
Environmental Protection AgencyFinal ruleDec 26, 2024
Air Plan Approval; Delaware; 2022 Amendments to Delaware's Ambient Air Quality Standards
2024-30404
Environmental Protection AgencyFinal ruleDec 23, 2024
Air Plan Disapproval; Texas; Attainment Demonstrations for the Dallas-Fort Worth and Houston-Galveston-Brazoria Nonattainment Areas
2024-29971
Environmental Protection AgencyProposed ruleDec 23, 2024
Air Plan Approval; Georgia; Update to Materials Incorporated by Reference
2024-30253
Environmental Protection AgencyFinal ruleDec 20, 2024
Air Plan Revisions; California; California Mobile Source Regulations
2024-30246
Environmental Protection AgencyProposed ruleDec 19, 2024
Air Plan Disapproval; Texas; Houston-Galveston-Brazoria Area Section 185 Fee Program; Cessation of Program
2024-29935
Environmental Protection AgencyProposed ruleDec 19, 2024
Partial Approval and Partial Disapproval of Air Quality Implementation Plans; California; Regional Haze State Implementation Plan for the Second Implementation Period
2024-29595
Environmental Protection AgencyProposed ruleDec 19, 2024
Finding of Failure To Attain and Reclassification of Las Vegas Area as Serious for the 2015 Ozone National Ambient Air Quality Standards
2024-29061
Environmental Protection AgencyFinal ruleDec 19, 2024
Partial Approval and Disapproval of Air Quality Implementation Plans; Arizona; Regional Haze State Implementation Plan for the Second Implementation Period and Prong 4 (Visibility) for the 2015 Ozone and 2012 Particulate Matter Standards
2024-29508
Environmental Protection AgencyFinal ruleDec 18, 2024
Redesignation of Portions of Westmoreland and Cambria Counties, Pennsylvania for the 2010 Sulfur Dioxide (SO2) National Ambient Air Quality Standards (NAAQS)
2024-29229
Environmental Protection AgencyFinal ruleDec 17, 2024
Findings of Failure To Attain and Reclassification of Areas in Illinois, Indiana, Michigan, Ohio, and Wisconsin as Serious for the 2015 Ozone National Ambient Air Quality Standards
2024-29137
Environmental Protection AgencyFinal ruleDec 17, 2024
Denial of Request for Attainment Date Extension, Finding of Failure To Attain, and Reclassification of an Area in Utah as Moderate for the 2015 Ozone National Ambient Air Quality Standards
2024-29246
Environmental Protection AgencyFinal ruleDec 16, 2024
Air Quality Plans; Arizona; Maricopa County Air Quality Department; Source-Specific SIP Revision
2024-28910
Environmental Protection AgencyFinal ruleDec 16, 2024
Air Plan Approval; Pennsylvania; Redesignation of the Allegheny County Nonattainment Area to Attainment and Approval of the Area's Maintenance Plan for the 2010 1-Hour Primary Sulfur Dioxide National Ambient Air Quality Standard
2024-28536
Environmental Protection AgencyProposed ruleDec 11, 2024
Air Plan Approval; SC; Updates to the Cross-State Air Pollution Rule
2024-28873
Environmental Protection AgencyProposed ruleDec 10, 2024
Air Plan Approval; WA; Southwest Clean Air Agency; Revisions to Excess Emissions, Startup, Shutdown, and General Requirements
2024-28804
Environmental Protection AgencyProposed ruleDec 10, 2024
Finding of Failure To Attain and Reclassification of an Area in Utah as Serious for the 2015 Ozone National Ambient Air Quality Standards
2024-28851
Environmental Protection AgencyFinal ruleDec 9, 2024
Air Plan Revisions; Arizona; Maricopa County Air Quality Department
2024-28537
Environmental Protection AgencyFinal ruleDec 9, 2024
Air Plan Approval; ID; Revisions to Air Quality Regulations
2024-28364
Environmental Protection AgencyFinal ruleDec 5, 2024
Air Plan Approval; California; Mojave Desert Air Quality Management District
2024-27627
Environmental Protection AgencyFinal ruleDec 4, 2024
Air Plan Partial Approval and Partial Disapproval; Wyoming; Regional Haze Plan for the Second Implementation Period
2024-27942
Environmental Protection AgencyFinal ruleDec 2, 2024
Air Plan Partial Approval and Partial Disapproval; Utah; Regional Haze State Implementation Plan for the Second Implementation Period; Air Plan Disapproval; Utah; Prong 4 (Visibility) for the 2015 8-Hour Ozone National Ambient Air Quality Standard
2024-27941
Environmental Protection AgencyFinal ruleDec 2, 2024
Air Plan Partial Approval and Partial Disapproval; North Dakota; Regional Haze State Implementation Plan for the Second Implementation Period
2024-27940
Environmental Protection AgencyFinal ruleDec 2, 2024
Guideline on Air Quality Models; Enhancements to the AERMOD Dispersion Modeling System
2024-27636
Environmental Protection AgencyFinal ruleNov 29, 2024
Air Plan Conditional Approval; California; Bay Area Air Quality Management District
2024-27518
Environmental Protection AgencyProposed ruleNov 29, 2024
Air Plan Approval; New York; Knowlton Technologies LLC
2024-27594
Environmental Protection AgencyProposed ruleNov 26, 2024
Finding of Failure To Attain and Reclassification of the Missouri Portion of the St. Louis Nonattainment Area as Serious for the 2015 Ozone National Ambient Air Quality Standards
2024-27382
Environmental Protection AgencyFinal ruleNov 25, 2024
Air Plan Approval; Wisconsin; Nitrogen Oxide Emissions Control Requirements
2024-26114
Environmental Protection AgencyFinal ruleNov 22, 2024
Air Plan Approval; Connecticut; Approval of State Implementation Plan Requirements for the 2008 Ozone Standard
2024-27050
Environmental Protection AgencyProposed ruleNov 21, 2024
Air Plan Approval; Shelby County, Tennessee; Revisions to Startup, Shutdown, and Malfunction Rules
2024-26928
Environmental Protection AgencyFinal ruleNov 20, 2024
Air Plan Approval; Wisconsin; Second Period Regional Haze Plan
2024-26833
Environmental Protection AgencyFinal ruleNov 19, 2024
Air Plan Approval; ID; Update to Materials Incorporated by Reference
2024-26506
Environmental Protection AgencyFinal ruleNov 18, 2024
Air Plan Approval; District of Columbia, Maryland, Virginia; Determination of Attainment by the Attainment Date and Clean Data Determination for the Washington, DC-MD-VA Nonattainment Area for the 2015 Ozone National Ambient Air Quality Standards
2024-26423
Environmental Protection AgencyProposed ruleNov 15, 2024
Air Plan Approval; Washington; Spokane Regional Clean Air Agency, General Air Quality Regulations
2024-26171
Environmental Protection AgencyProposed ruleNov 14, 2024
Air Quality: Revision to the Regulatory Definition of Volatile Organic Compounds-Exclusion of (Z)-1-chloro-2,3,3,3-tetrafluoropropene (HCFO-1224yd(Z))
2024-25971
Environmental Protection AgencyProposed ruleNov 12, 2024
Air Plan Revisions; Arizona; Maricopa County Air Quality Department
2024-25947
Environmental Protection AgencyProposed ruleNov 8, 2024
Inflation Adjustment References for Civil Monetary Penalty Amounts in Title 40 of the Code of Federal Regulations
2024-25669
Environmental Protection AgencyFinal ruleNov 8, 2024
Approval and Promulgation of Air Quality Implementation Plans; New Hampshire; Regional Haze State Implementation Plan for the Second Implementation Period
2024-25679
Environmental Protection AgencyFinal ruleNov 7, 2024
Air Plan Approval; Pennsylvania; Adoption of Federal Implementation Plan Reasonably Available Control Technology Requirements for Keystone, Conemaugh, Homer City, and Montour Generating Facilities for the 1997 and 2008 Ozone National Ambient Air Quality Standards
2024-25604
Environmental Protection AgencyFinal ruleNov 6, 2024
Federal “Good Neighbor Plan” for the 2015 Ozone National Ambient Air Quality Standards; Response to Judicial Stay
2024-25501
Environmental Protection AgencyFinal ruleNov 6, 2024
Air Plan Revisions; California; San Diego County Air Pollution Control District and Mojave Desert Air Quality Management District
2024-25560
Environmental Protection AgencyFinal ruleNov 4, 2024
Air Plan Approval; Delaware; Motor Vehicle Inspection and Maintenance Program
2024-25460
Environmental Protection AgencyFinal ruleNov 4, 2024
Air Quality State Implementation Plans; Partial Approval, Partial Disapproval and Promulgation; Texas; Regional Haze; Extension of Comment Period
2024-25452
Environmental Protection AgencyProposed ruleNov 1, 2024
Air Plan Approval; Forsyth County, North Carolina; Removal of Excess Emissions Provisions
2024-25392
Environmental Protection AgencyFinal ruleOct 31, 2024
Air Plan Approval; KY; Revisions to Jefferson County Control of Open Burning
2024-25244
Environmental Protection AgencyProposed ruleOct 31, 2024
Air Plan Approval; Mississippi; PSD and Air Quality Modeling Infrastructure Requirements for the 2015 8-Hour Ozone National Ambient Air Quality Standards
2024-25243
Environmental Protection AgencyFinal ruleOct 31, 2024
Air Plan Approval; Revisions to Colorado Common Provisions Regulation
2024-25228
Environmental Protection AgencyProposed ruleOct 30, 2024
Outer Continental Shelf Air Regulations Update To Include New Jersey State Requirements
2024-25141
Environmental Protection AgencyFinal ruleOct 30, 2024
Air Plan Approval; Wisconsin; SIP Alignment Revision
2024-25032
Environmental Protection AgencyFinal ruleOct 29, 2024
Interim Final Determination To Stay or Defer Sanctions; California; San Joaquin Valley Unified Air Pollution Control District
2024-24707
Environmental Protection AgencyFinal ruleOct 25, 2024
Conditional Approval; Contingency Measure State Implementation Plan for the 2008 Ozone Standard; San Joaquin Valley, California
2024-24706
Environmental Protection AgencyProposed ruleOct 25, 2024
Air Plan Approval; Washington; Olympic Region Clean Air Agency, Recreational Fires
2024-24714
Environmental Protection AgencyProposed ruleOct 24, 2024
Air Plan Approval; WA; Excess Emissions, Startup, Shutdown, and Malfunction Revisions, Energy Facility Site Evaluation Council
2024-24211
Environmental Protection AgencyProposed ruleOct 22, 2024
Approval and Promulgation of Air Quality Implementation Plan; Delaware; Regional Haze State Implementation Plan for the Second Implementation Period
2024-24196
Environmental Protection AgencyFinal ruleOct 22, 2024
Air Quality Plans; California; San Diego County Air Pollution Control District; Permit Program
2024-24223
Environmental Protection AgencyFinal ruleOct 21, 2024
Air Plan Approval; California; South Coast Air Quality Management District
2024-24219
Environmental Protection AgencyFinal ruleOct 21, 2024
Air Plan Approval; Montana; Missoula, Montana Oxygenated Fuels Program Removal, Carbon Monoxide, Limited Maintenance Plan
2024-23589
Environmental Protection AgencyProposed ruleOct 15, 2024
Revisions to the Federal Implementation Plan for the Billings/Laurel, Montana, Sulfur Dioxide Area
2024-23568
Environmental Protection AgencyProposed ruleOct 15, 2024
Air Quality State Implementation Plans; Partial Approval, Partial Disapproval and Promulgation; Texas; Regional Haze
2024-23341
Environmental Protection AgencyProposed ruleOct 15, 2024
Air Plan Approvals; Arizona; California; Correcting Amendments
2024-23423
Environmental Protection AgencyFinal ruleOct 11, 2024
Air Plan Approval; Texas; Vehicle Inspection and Maintenance Plan for Bexar County
2024-23340
Environmental Protection AgencyProposed ruleOct 11, 2024
Air Plan Approval; New Mexico; Periodic Emission Inventory SIP for Sunland Park Nonattainment Area for 2015 Ozone NAAQS
2024-23339
Environmental Protection AgencyFinal ruleOct 11, 2024
Air Plan Approval; Texas; New Source Review Updates for Project Emissions Accounting
2024-23282
Environmental Protection AgencyProposed ruleOct 11, 2024
Approval and Promulgation of Implementation Plans; California; California Mobile Source Regulations
2024-23270
Environmental Protection AgencyProposed ruleOct 11, 2024
Air Plan Approval; OR; Regional Haze Plan for the Second Implementation Period
2024-22603
Environmental Protection AgencyFinal ruleOct 8, 2024
Air Plan Approval; Ohio; Volatile Organic Compounds
2024-23140
Environmental Protection AgencyProposed ruleOct 7, 2024
Air Plan Approval; District of Columbia, Maryland, and Virginia; Update of the Motor Vehicle Emissions Budgets for the Washington-MD-VA 2008 8-Hour Ozone National Ambient Air Quality Standard Maintenance Area
2024-22535
Environmental Protection AgencyFinal ruleOct 4, 2024
State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards
2024-22008
Environmental Protection AgencyProposed ruleOct 4, 2024
Air Plan Approval; Illinois; NAAQS Update
2024-22730
Environmental Protection AgencyFinal ruleOct 3, 2024
Air Plan Approval; Pennsylvania; Oil and Natural Gas Control Measures for 2008 and 2015 Ozone National Ambient Air Quality Standards
2024-22386
Environmental Protection AgencyFinal ruleOct 1, 2024
Air Plan Approval; North Carolina; Mecklenburg Emission Control Standards
2024-22134
Environmental Protection AgencyFinal ruleSep 30, 2024
Designation of Areas for Air Quality Planning Purposes; Redesignation Request and Associated Maintenance Plan for Whatcom County, WA 2010 SO2 Nonattainment Area
2024-22171
Environmental Protection AgencyProposed ruleSep 27, 2024
Air Plan Approval; FL; Surface Coating of Miscellaneous Metal Parts and Products Amendments
2024-22135
Environmental Protection AgencyFinal ruleSep 27, 2024
Air Plan Approval; Connecticut; State Implementation Plan Revisions Required by the 2015 Ozone NAAQS
2024-22115
Environmental Protection AgencyProposed ruleSep 27, 2024
Air Plan Revisions; California; Sacramento Metropolitan Air Quality Management District
2024-21729
Environmental Protection AgencyFinal ruleSep 25, 2024
Air Plan Revisions; California; San Diego County Air Pollution Control District and Mojave Desert Air Quality Management District
2024-21646
Environmental Protection AgencyProposed ruleSep 23, 2024
Air Plan Revisions; California; San Diego County Air Pollution Control District
2024-21494
Environmental Protection AgencyFinal ruleSep 20, 2024
Air Plan Approval; North Carolina; Permitting Provisions Revisions
2024-21006
Environmental Protection AgencyFinal ruleSep 19, 2024
Approval of Source-Specific Air Quality Implementation Plan; New York; Sylvamo Ticonderoga Mill
2024-20560
Environmental Protection AgencyFinal ruleSep 19, 2024
Approval and Promulgation of Air Quality Implementation Plans; Connecticut; Regional Haze State Implementation Plan for the Second Implementation Period
2024-21041
Environmental Protection AgencyFinal ruleSep 17, 2024
Air Plan Approval; Montana; Missoula, Montana, Air Rule Revisions
2024-20997
Environmental Protection AgencyProposed ruleSep 17, 2024
Air Plan Approval; Mississippi; PSD and Air Quality Modeling Infrastructure Requirements for the 2015 8-Hour Ozone National Ambient Air Quality Standards
2024-21007
Environmental Protection AgencyProposed ruleSep 16, 2024
Air Plan Approval; New Hampshire; Ambient Air Quality Standards
2024-20721
Environmental Protection AgencyFinal ruleSep 13, 2024
Air Plan Approval; Tennessee; Nitrogen Oxides SIP Call Alternative Monitoring and Domtar Paper Company, LLC
2024-20668
Environmental Protection AgencyFinal ruleSep 13, 2024
Air Plan Approval; Shelby County, Tennessee; Revisions To Startup, Shutdown, and Malfunction Rules
2024-20669
Environmental Protection AgencyProposed ruleSep 12, 2024
Air Plan Approval; Forsyth County, North Carolina; Removal of Excess Emissions Provisions
2024-20666
Environmental Protection AgencyProposed ruleSep 12, 2024
Air Plan Approval; California; South Coast Air Quality Management District
2024-20349
Environmental Protection AgencyFinal ruleSep 11, 2024
Outer Continental Shelf Air Regulations; Amendment to State Requirements Incorporated; Massachusetts
2024-20119
Environmental Protection AgencyProposed ruleSep 11, 2024
Air Plan Approval; California; Feather River Air Quality Management District
2024-19848
Environmental Protection AgencyProposed ruleSep 5, 2024
Approval and Promulgation of State Implementation Plans; New Jersey; Elements of the 2008 and 2015 Ozone National Ambient Air Quality Standards
2024-19581
Environmental Protection AgencyFinal ruleSep 4, 2024
Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; Arizona; 2015 Ozone Infrastructure Requirements
2024-17711
Environmental Protection AgencyFinal ruleSep 4, 2024
Air Plan Approval; New Jersey; NOX SIP Call and Removal of CAIR
2024-19699
Environmental Protection AgencyFinal ruleSep 3, 2024
Air Plan Approval; Wisconsin; Infrastructure SIP Requirements for the 2015 Ozone NAAQS
2024-19548
Environmental Protection AgencyFinal ruleAug 30, 2024
Air Plan Revisions; California; Motor Vehicle Inspection and Maintenance Program
2024-19374
Environmental Protection AgencyFinal ruleAug 30, 2024

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