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Air - General Regulatory Activity
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 3380 items in 85 pages
Final Regulations 40 CFR 50 - Reference Measurement Principle and Calibration Procedure for the Measurement of Ozone in the Atmosphere (Chemiluminescence Method); Correction 01/16/2025National
Final Regulations 40 CFR 52 - Air Plan Approval; Arizona; Maricopa County Air Quality Department 01/16/2025National
Final Regulations 40 CFR 52 - Air Plan Approval; Montana; Missoula, Montana Oxygenated Fuels Program Removal, Carbon Monoxide, Limited Maintenance Plan 01/16/2025National
Notices Agency Information Collection Activities; Submission to the Office of Management and Budget for Review and Approval; Comment Request; Implementation of the 8-Hour National Ambient Air Quality Standards for Ozone (Renewal) 01/16/2025National
Final Regulations 40 CFR 52 - Air Plan Revisions; Arizona; Maricopa County Air Quality Department 01/10/2025National
Final Regulations 40 CFR 52 - Excess Emissions During Periods of Startup, Shutdown, and Malfunction; Partial Withdrawals of Findings of Failure To Submit State Implementation Plan (SIP) 01/10/2025National
Notices California State Nonroad Engine Pollution Control Standards; Commercial Harbor Craft Regulations; Notice of Decision 01/10/2025National
Notices California State Nonroad Engine Pollution Control Standards; In-Use Diesel-Fueled Transport Refrigeration Units (TRU) and TRU Generator Sets; Notice of Decision 01/10/2025National
Notices California State Nonroad Engine Pollution Control Standards; In-Use Off-Road Diesel Fueled Fleets; Notice of Decision 01/10/2025National
Proposed Regulations 40 CFR 52 - Air Plan Approval; AK, Fairbanks North Star Borough; 2006 24-Hour PM2.5 Serious Area and 189(d) Plan 01/08/2025National
Final Regulations 40 CFR 52 - Interim Final Determination To Defer Sanctions; AK, Fairbanks North Star Borough 01/08/2025National
Notices California State Motor Vehicle and Engine and Nonroad Engine Pollution Control Standards; The ``Omnibus'' Low NOX Regulation; Waiver of Preemption; Notice of Decision 01/06/2025National
Notices California State Motor Vehicle and Engine Pollution Control Standards; Advanced Clean Cars II; Waiver of Preemption; Notice of Decision 01/06/2025National
Notices California State Nonroad Engine Pollution Control Standards; Small Off-Road Engines Regulations; Notice of Decision 01/06/2025National
Proposed Regulations 40 CFR 52 - Air Plan Approval; Ohio; Moderate Attainment Plan Elements for the Cleveland Area for the 2015 Ozone Standard 01/03/2025National
Proposed Regulations 40 CFR 81 - Air Quality Designations; KY; Redesignation of the Kentucky Portion of the Louisville, KY-IN 2015 8-Hour Ozone Nonattainment Area to Attainment 01/03/2025National
Notices Transportation and Climate Division (TCD) Grant Program Reporting Templates 01/02/2025National
Final Regulations 40 CFR 52 - Air Plan Revisions; California; Feather River Air Quality Management District 12/31/2024National
Proposed Regulations 40 CFR 52 - Air Plan Approval; Ohio; Nitrogen Oxide Standards Rules 12/30/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; Ohio; Nitrogen Oxide Standards Rules 12/30/2024National
Final Regulations 40 CFR 52 - Air Plan Disapproval; Louisiana; Removal of Excess Emissions Provisions; Correction 12/30/2024National
Final Regulations 40 CFR 52 and 81 - Air Plan Approval; Illinois; Alton Township 2010 Sulfur Dioxide Redesignation and Maintenance Plan 12/30/2024National
Final Regulations 40 CFR 50 - Review of the Secondary National Ambient Air Quality Standards for Oxides of Nitrogen, Oxides of Sulfur, and Particulate Matter 12/27/2024National
Proposed Regulations 40 CFR 52 - Air Plan Approval; Florida; Second Planning Period Regional Haze Plan 12/27/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; Indiana; Update to CFR References 12/27/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; KY; Revisions to Jefferson County Control of Open Burning 12/27/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; Revisions to Colorado Common Provisions Regulation 12/27/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; WA; Excess Emissions, Startup, Shutdown, and Malfunction Revisions, Energy Facility Site Evaluation Council 12/27/2024National
Final Regulations 40 CFR 55 - Outer Continental Shelf Air Regulations; Amendment to State Requirements Incorporated by Reference; Massachusetts 12/27/2024National
Final Regulations 40 CFR 62 - Partial Approval, Partial Disapproval and Promulgation of State Plans for Designated Facilities and Pollutants; Spokane Regional Clean Air Agency; Control of Emissions From Existing Large Municipal Waste Combustors 12/27/2024National
Proposed Regulations 40 CFR 52 - Air Plan Conditional Approval; California; Bay Area Air Quality Management District; Extension of Comment Period 12/26/2024National
Final Regulations 40 CFR 52 - Determination of Attainment by the Attainment Date; Michigan; St. Clair 2010 Sulfur Dioxide Nonattainment Area 12/26/2024National
Final Regulations 40 CFR 52 - Determination To Defer Sanctions; California; Mojave Desert Air Quality Management District 12/26/2024National
Notices Agency Information Collection Activities; Submission to the Office of Management and Budget for Review and Approval; Comment Request; Consolidated Air Rule for the Synthetic Organic Chemical Manufacturing Industry (Renewal) 12/26/2024National
Proposed Regulations 40 CFR 51 - Regional Haze Third Implementation Period; Extension of the State Implementation Plan Due Date 12/23/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; Air Plan Disapproval; Delaware; Removal of Excess Emissions Provisions; Final Correction 12/23/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; Delaware; 2022 Amendments to Delaware's Ambient Air Quality Standards 12/23/2024National
Proposed Regulations 40 CFR 52 - Air Plan Disapproval; Texas; Attainment Demonstrations for the Dallas-Fort Worth and Houston-Galveston-Brazoria Nonattainment Areas 12/23/2024National
Final Regulations 40 CFR 52 - Air Plan Approval; Georgia; Update to Materials Incorporated by Reference 12/20/2024National
Notices Release of Volumes 1 and 2 of the Integrated Review Plan for the National Ambient Air Quality Standards for Ozone and Related Photochemical Oxidants 12/20/2024National
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