Federal Register
675 documents (filtered)
Final Rule
2025-24207
Air Plan Approval; Michigan and Minnesota; Revision to Taconite Federal Implementation Pla...
Environmental Protection Agency
CFR: 40 CFR 52
Jan 2, 2026
Eff: Feb 2, 2026
Final Rule
2025-24149
National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklah...
Environmental Protection Agency
CFR: 40 CFR 61, 40 CFR 63
Jan 2, 2026
Eff: Feb 2, 2026
Final Rule
2025-24141
Air Plan Approval; Colorado; Revisions to Colorado Procedural Rules and Common Provisions ...
Environmental Protection Agency
CFR: 40 CFR 52
Jan 2, 2026
Eff: Mar 3, 2026
Final Rule
2025-24202
Congressional Review Act Revocation of 2024 Review of Final Rule Reclassification of Major...
Environmental Protection Agency
CFR: 40 CFR 63
Jan 2, 2026
Eff: Jan 2, 2026
Final Rule
2025-24084
Regulation of Fuels, Fuel Additives, and Regulated Blendstocks
Environmental Protection Agency
CFR: 40 CFR 1090
Dec 31, 2025
Final Rule
2025-24102
Effluent Limitations Guidelines and Standards for the Steam Electric Power Generating Poin...
Environmental Protection Agency
CFR: 40 CFR 423
Dec 31, 2025
Eff: Mar 2, 2026
Final Rule
C1-2025-22565
Air Plan Approval; South Carolina; Second Planning Period Regional Haze Plan
Environmental Protection Agency
CFR: 40 CFR 52
Dec 30, 2025
Final Rule
2025-23424
Thiamethoxam; Pesticide Tolerances
Environmental Protection Agency
CFR: 40 CFR 180
Dec 19, 2025
Eff: Dec 19, 2025
Final Rule
2025-23420
Flupyradifurone; Pesticide Tolerance for Emergency Exemption
Environmental Protection Agency
CFR: 40 CFR 180
Dec 19, 2025
Eff: Dec 19, 2025
Final Rule
2025-23284
New Source Performance Standards and National Emission Standards for Hazardous Air Polluta...
Environmental Protection Agency
CFR: 40 CFR 60, 40 CFR 61
Dec 18, 2025
Eff: Jan 20, 2026
Final Rule
2025-23259
Air Plan Approval: Arizona: Infrastructure Requirements for the 2012 Fine Particulate Matt...
Environmental Protection Agency
CFR: 40 CFR 52, 40 CFR 81
Dec 18, 2025
Eff: Jan 20, 2026
Final Rule
2025-23275
New Source Performance Standards; Delegation of Authority to Oklahoma
Environmental Protection Agency
CFR: 40 CFR 60
Dec 18, 2025
Eff: Jan 20, 2026
Final Rule
2025-22927
SpCas9 Protein; Exemption From the Requirement of a Tolerance
Environmental Protection Agency
CFR: 40 CFR 174
Dec 16, 2025
Eff: Dec 16, 2025
Final Rule
2025-22595
Air Plan Approval; Connecticut; Plan Submittals for the 2008 Ozone National Ambient Air Qu...
Environmental Protection Agency
CFR: 40 CFR 52
Dec 11, 2025
Eff: Dec 11, 2025
Final Rule
2025-22562
Air Plan Approval; Ohio; Carmeuse Lime, Inc. SO2
Environmental Protection Agency
CFR: 40 CFR 52
Dec 11, 2025
Eff: Jan 12, 2026
Final Rule
2025-22564
Air Plan Approval; Tennessee; Second Period Regional Haze Plan
Environmental Protection Agency
CFR: 40 CFR 52
Dec 11, 2025
Eff: Jan 12, 2026
Final Rule
2025-22584
Air Plan Approval; California; South Coast Air Quality Management District
Environmental Protection Agency
CFR: 40 CFR 52
Dec 11, 2025
Eff: Jan 12, 2026
Final Rule
2025-22582
Approval of Air Quality Implementation Plans; Arizona; Arizona Department of Environmental...
Environmental Protection Agency
CFR: 40 CFR 52
Dec 11, 2025
Eff: Jan 12, 2026
Final Rule
2025-22517
Air Plan Approval; Arizona; Maricopa County Air Quality Department; Volatile Organic Compo...
Environmental Protection Agency
CFR: 40 CFR 52
Dec 11, 2025
Eff: Jan 12, 2026
Final Rule
2025-22565
Air Plan Approval; South Carolina; Second Planning Period Regional Haze Plan
Environmental Protection Agency, National Oceanic and Atmospheric Administration
CFR: 40 CFR 52
Dec 11, 2025
Eff: Jan 12, 2026
Final Rule
2025-22174
Azoxystrobin; Pesticide Tolerances
Environmental Protection Agency
CFR: 40 CFR 180
Dec 8, 2025
Eff: Dec 8, 2025
Final Rule
2025-22002
Air Plan Approval; Texas and Oklahoma; Texas Regional Haze Plans for the First and Second ...
Environmental Protection Agency
CFR: 40 CFR 52
Dec 5, 2025
Eff: Jan 5, 2026
Final Rule
2025-22034
National Emission Standards for Hazardous Air Pollutants for Coke Ovens: Pushing, Quenchin...
Environmental Protection Agency
CFR: 40 CFR 63
Dec 5, 2025
Eff: Dec 5, 2025
Final Rule
2025-21788
Oil and Natural Gas Sector Climate Review: Extension of Deadlines in Standards of Performa...
Environmental Protection Agency
CFR: 40 CFR 60
Dec 3, 2025
Eff: Dec 3, 2025
Final Rule
2025-21787
National Emission Standards for Hazardous Air Pollutants: Integrated Iron and Steel Manufa...
Environmental Protection Agency
CFR: 40 CFR 63
Dec 3, 2025
Eff: Dec 3, 2025
Final Rule
2025-21713
Environmental Protection Agency Acquisition Regulation (EPAAR); Special Contracting Method...
Environmental Protection Agency
CFR: 48 CFR 1517
Dec 1, 2025
Eff: Dec 2, 2025
Final Rule
2025-21340
Air Plan Approval; Montana; Regional Haze Plan for the Second Implementation Period
Environmental Protection Agency
CFR: 40 CFR 52
Nov 28, 2025
Eff: Dec 29, 2025
Final Rule
2025-21306
Delegation of Authority to North Carolina and Forsyth County of the Federal Plan for Exist...
Environmental Protection Agency
CFR: 40 CFR 62
Nov 26, 2025
Eff: Dec 26, 2025
Final Rule
2025-21322
Air Plan Approval; Ohio; Emergency Episodes and Ambient Air Quality Standards
Environmental Protection Agency
CFR: 40 CFR 52
Nov 26, 2025
Eff: Jan 26, 2026
Final Rule
2025-21200
Propyzamide; Extension of Tolerance for Emergency Exemption
Environmental Protection Agency
CFR: 40 CFR 180
Nov 26, 2025
Eff: Nov 26, 2025
Understanding This Page
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.