Final Regulations |
40 CFR 81 - Designation of Areas for Air Quality Planning Purposes
| 02/14/2025 | National |
Final Regulations |
40 CFR 261, 262, 266, and 372 - Delay of Effective Date for 2 Final Regulations published by the EPA Between December 11, 2024, and January 6, 2025
| 02/05/2025 | National |
Final Regulations |
40 CFR 51, 52, 81, and 751 - Delay of Effective Date for 4 Final Regulations published by the Environmental Protection Agency Between November 29, 2024, and December 31, 2024
| 01/28/2025 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; Ohio; Withdrawal of Technical Amendment
| 01/21/2025 | National |
Final Regulations |
40 CFR 52 - Approval and Promulgation of Implementation Plans; State of California; Coachella Valley; Extreme Attainment Plan for 1997 8-Hour Ozone Standards
| 01/21/2025 | National |
Final Regulations |
40 CFR 52 - Interim Final Determination To Defer Sanctions, San Joaquin Valley Unified Air Pollution Control District
| 01/21/2025 | National |
Final Regulations |
40 CFR 141 - Expedited Approval of Alternative Test Procedures for the Analysis of Contaminants Under the Safe Drinking Water Act; Analysis and Sampling Procedures
| 01/16/2025 | National |
Final Regulations |
40 CFR 50 - Reference Measurement Principle and Calibration Procedure for the Measurement of Ozone in the Atmosphere (Chemiluminescence Method); Correction
| 01/16/2025 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; Arizona; Maricopa County Air Quality Department
| 01/16/2025 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; Montana; Missoula, Montana Oxygenated Fuels Program Removal, Carbon Monoxide, Limited Maintenance Plan
| 01/16/2025 | National |
Final Regulations |
40 CFR 52 - Clean Air Act Operating Permit Program; Notice of Issuance of Title V Federal Operating Permit to Deseret Generation and Transmission Co-operative
| 01/16/2025 | National |
Final Regulations |
40 CFR 9 and 257 - Hazardous and Solid Waste Management System: Disposal of Coal Combustion Residuals From Electric Utilities; Legacy CCR Surface Impoundments; Correction
| 01/16/2025 | National |
Final Regulations |
40 CFR 1090 - Fuels Regulatory Streamlining Sampling and Testing Updates
| 01/15/2025 | National |
Final Regulations |
40 CFR 60 - New Source Performance Standards for Greenhouse Gas Emissions From New, Modified, and Reconstructed Fossil Fuel-Fired Electric Generating Units
| 01/15/2025 | National |
Final Regulations |
PHMSA 49 CFR 192 - Pipeline Safety: Safety of Gas Transmission Pipelines: Corrections To Conform to Judicial Review
| 01/15/2025 | National |
Final Regulations |
40 CFR 52 - Air Plan Revisions; Arizona; Maricopa County Air Quality Department
| 01/10/2025 | National |
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)
| 01/10/2025 | National |
Final Regulations |
40 CFR 19 - Civil Monetary Penalty Inflation Adjustment
| 01/08/2025 | National |
Final Regulations |
40 CFR 52 - Interim Final Determination To Defer Sanctions; AK, Fairbanks North Star Borough
| 01/08/2025 | National |
Final Regulations |
40 CFR 63 - National Emission Standards for Hazardous Air Pollutants: National Perchloroethylene Air Emission Standards for Dry Cleaning Facilities Technology Review
| 01/07/2025 | National |
Final Regulations |
40 CFR 63 - Review of Final Rule Reclassification of Major Sources as Area Sources Under Section 112 of the Clean Air Act; Correction
| 01/07/2025 | National |
Final Regulations |
40 CFR 372 - Implementing Statutory Addition of Certain Per- and Polyfluoroalkyl Substances (PFAS) to Toxics Release Inventory (TRI) Beginning With Reporting Year 2025
| 01/06/2025 | National |
Final Regulations |
40 CFR 9 and 721 - Significant New Use Rules on Certain Chemical Substances (19-5.F)
| 01/06/2025 | National |
Final Regulations |
40 CFR 52 - Air Plan Revisions; California; Feather River Air Quality Management District
| 12/31/2024 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; Ohio; Nitrogen Oxide Standards Rules
| 12/30/2024 | National |
Final Regulations |
40 CFR 52 - Air Plan Disapproval; Louisiana; Removal of Excess Emissions Provisions; Correction
| 12/30/2024 | National |
Final Regulations |
40 CFR 52 - Federal Implementation Plan for Nonattainment New Source Review Program; Mojave Desert Air Quality Management District, California
| 12/30/2024 | National |
Final Regulations |
40 CFR 52 and 81 - Air Plan Approval; Illinois; Alton Township 2010 Sulfur Dioxide Redesignation and Maintenance Plan
| 12/30/2024 | National |
Final Regulations |
40 CFR 70 - Air Plan Approval; Ohio; Title V Operating Permit Rules Revisions
| 12/30/2024 | National |
Final Regulations |
PHMSA 49 CFR 107, 171, and 190 - Revisions to Civil Penalty Amounts, 2025
| 12/30/2024 | National |
Final Regulations |
40 CFR 180 - Ethiprole; Pesticide Tolerances
| 12/27/2024 | National |
Final Regulations |
40 CFR 50 - Review of the Secondary National Ambient Air Quality Standards for Oxides of Nitrogen, Oxides of Sulfur, and Particulate Matter
| 12/27/2024 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; Indiana; Update to CFR References
| 12/27/2024 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; KY; Revisions to Jefferson County Control of Open Burning
| 12/27/2024 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; Revisions to Colorado Common Provisions Regulation
| 12/27/2024 | National |
Final Regulations |
40 CFR 52 - Air Plan Approval; WA; Excess Emissions, Startup, Shutdown, and Malfunction Revisions, Energy Facility Site Evaluation Council
| 12/27/2024 | National |
Final Regulations |
40 CFR 55 - Outer Continental Shelf Air Regulations; Amendment to State Requirements Incorporated by Reference; Massachusetts
| 12/27/2024 | National |
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
| 12/27/2024 | National |
Final Regulations |
40 CFR 52 - Determination of Attainment by the Attainment Date; Michigan; St. Clair 2010 Sulfur Dioxide Nonattainment Area
| 12/26/2024 | National |
Final Regulations |
40 CFR 52 - Determination To Defer Sanctions; California; Mojave Desert Air Quality Management District
| 12/26/2024 | National |