Federal Register
540 documents (filtered)
Proposed Rule
2025-19757
Significant New Use Rules on Certain Chemical Substances (25-2.5e)
Environmental Protection Agency
CFR: 40 CFR 721
Nov 3, 2025
Proposed Rule
2025-19755
Significant New Use Rules on Certain Chemical Substances (25-1.5e)
Environmental Protection Agency
CFR: 40 CFR 721
Nov 3, 2025
Proposed Rule
2025-19713
Air Plan Approval; AK; Regional Haze Plan for the Second Implementation Period
Environmental Protection Agency
CFR: 40 CFR 52
Oct 30, 2025
Proposed Rule
2025-19673
Modification of Significant New Use Rules of Certain Chemical Substances (23-1.M)
Environmental Protection Agency
CFR: 40 CFR 721, 40 CFR 725
Oct 28, 2025
Approval and Promulgation of Air Quality Implementation Plans; Nevada; Regional Haze State...
Environmental Protection Agency
CFR: 40 CFR 52
Oct 23, 2025
Proposed Rule
2025-19638
Air Plan Approval; Arizona; Interstate Transport Requirements for the 2012 Fine Particulat...
Environmental Protection Agency
CFR: 40 CFR 52
Oct 23, 2025
Proposed Rule
2025-19438
Phasedown of Hydrofluorocarbons: Reconsideration of Certain Regulatory Requirements Promul...
Environmental Protection Agency
CFR: 40 CFR 84
Oct 3, 2025
Proposed Rule
2025-19280
Visibility Protection: Regional Haze State Plan Requirements Rule Revision
Environmental Protection Agency
CFR: 40 CFR 51
Oct 2, 2025
Proposed Rule
2025-19278
Air Plan Approval; Ohio; Muskingum River 2010 Sulfur Dioxide Redesignation and Maintenance...
Environmental Protection Agency
CFR: 40 CFR 52, 40 CFR 81
Oct 2, 2025
Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Poin...
Environmental Protection Agency
CFR: 40 CFR 423
Oct 2, 2025
Proposed Rule
2025-19155
National Emission Standards for Hazardous Air Pollutants From Secondary Lead Smelting Tech...
Environmental Protection Agency
CFR: 40 CFR 63
Oct 1, 2025
Proposed Rule
2025-18902
Receipt of Pesticide Petitions Filed for Residues of Pesticide Chemicals in or on Various ...
Environmental Protection Agency
CFR: 40 CFR 174, 40 CFR 180
Sep 29, 2025
Proposed Rule
2025-18652
Air Plan Approval; Ohio; Volatile Organic Compounds RFD Beaufort
Environmental Protection Agency
CFR: 40 CFR 52
Sep 25, 2025
Proposed Rule
2025-18594
Air Plan Approval; Indiana; Huntington County 2010 Sulfur Dioxide Redesignation and Mainte...
Environmental Protection Agency
CFR: 40 CFR 52, 40 CFR 81
Sep 25, 2025
Proposed Rule
2025-18629
Air Plan Approval; Oregon; 2024 Vehicle Inspection Program Updates
Environmental Protection Agency
CFR: 40 CFR 52
Sep 25, 2025
Proposed Rule
2025-18635
Air Plan Approval; Virginia; Revision to the Regulatory Definition of Volatile Organic Com...
Environmental Protection Agency
CFR: 40 CFR 52
Sep 25, 2025
Utah; Northern Wasatch Front; 2015 8-Hour Ozone Nonattainment Area Boundary Expansion and ...
Environmental Protection Agency
CFR: 40 CFR 81
Sep 25, 2025
Proposed Rule
2025-18431
Procedures for Chemical Risk Evaluation Under the Toxic Substances Control Act (TSCA)
Environmental Protection Agency
CFR: 40 CFR 702
Sep 23, 2025
Proposed Rule
C1-2025-17923
Reconsideration of the Greenhouse Gas Reporting Program
Environmental Protection Agency
CFR: 40 CFR 98
Sep 22, 2025
Proposed Rule
2025-18056
Hawaii: Final Approval of State Underground Storage Tank Program Revisions, Codification, ...
Environmental Protection Agency
CFR: 40 CFR 281, 40 CFR 282
Sep 18, 2025
Proposed Rule
2025-18111
Renewable Fuel Standard (RFS) Program: Standards for 2026 and 2027, Partial Waiver of 2025...
Environmental Protection Agency
CFR: 40 CFR 80, 40 CFR 1090
Sep 18, 2025
Proposed Rule
2025-17923
Reconsideration of the Greenhouse Gas Reporting Program
Environmental Protection Agency
CFR: 40 CFR 98
Sep 16, 2025
Air Plan Approval; California; San Joaquin Valley Unified Air Pollution Control District
Environmental Protection Agency
CFR: 40 CFR 52
Sep 12, 2025
Proposed Rule
2025-17501
Air Plan Revisions; Arizona; Maricopa County Air Quality Department; Particulate Matter; I...
Environmental Protection Agency
CFR: 40 CFR 52
Sep 11, 2025
Proposed Rule
2025-17540
Authorization of State Hazardous Waste Management Program Revisions: California
Environmental Protection Agency
CFR: 40 CFR 271
Sep 11, 2025
Proposed Rule
2025-17499
Air Plan Approval; Montana; Regional Haze Plan for the Second Implementation Period; Prong...
Environmental Protection Agency
CFR: 40 CFR 52
Sep 11, 2025
Proposed Rule
2025-17502
Approval of Air Quality Implementation Plans; Arizona; Arizona Department of Environmental...
Environmental Protection Agency
CFR: 40 CFR 52
Sep 11, 2025
Proposed Rule
2025-17500
Air Plan Approval; Arizona; Maricopa County Air Quality Department; Volatile Organic Compo...
Environmental Protection Agency
CFR: 40 CFR 52
Sep 11, 2025
Proposed Rule
2025-17488
Air Plan Approval; Wyoming; R-35 Wyoming Air Quality Standards and Regulations Rule Packag...
Environmental Protection Agency
CFR: 40 CFR 52
Sep 11, 2025
Proposed Rule
2025-17498
Air Plan Revisions; Arizona; Maricopa County Air Quality Department; Volatile Organic Comp...
Environmental Protection Agency
CFR: 40 CFR 52
Sep 11, 2025
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The Federal Register is the daily journal of the U.S. government. Proposed rules invite public comment before becoming law. Final rules have completed the comment process and are (or will become) legally binding. FRTracker extracts obligations from these documents—the specific things people or organizations must, may, or must not do.