Data / Federal rules / Carbon oxides
Federal rules on carbon oxides: 23 since April 2024
12 final rules and 11 proposed rules since April 30, 2024. 1 is open for comment now. Most come from the Environmental Protection Agency (22), Pipeline and Hazardous Materials Safety Administration (1).
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
Every document, newest first
| Document | Agency | Type | Published |
|---|
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 Agency | Proposed rule | Oct 19 |
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 Agency | Proposed rule | Jun 23 |
Approval and Promulgation of Air Quality Implementation Plans; Wyoming; Regional Haze Federal Implementation Plan
2026-11436 | Environmental Protection Agency | Proposed rule | Jun 8 |
Air Plan Approval; Ohio; Removal of Air Nuisance Rule
2026-10643 | Environmental Protection Agency | Proposed rule | May 28 |
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 Agency | Proposed rule | Apr 30 |
Pipeline Safety: Adjustment to OPID Notifications for Construction
2026-08082 | Pipeline and Hazardous Materials Safety Administration | Proposed rule | Apr 24 |
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 Agency | Proposed rule | Apr 23 |
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 Agency | Final rule | Apr 9 |
Air Plan Approval; Ohio; Ohio Permit Rules Revisions
2026-06398 | Environmental Protection Agency | Final rule | Apr 2 |
Air Plan Approval; Connecticut; Revised Format for Materials Incorporated by Reference
2026-02477 | Environmental Protection Agency | Final rule | Feb 9 |
National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma
2025-24149 | Environmental Protection Agency | Final rule | Jan 2 |
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Louisiana
2025-23284 | Environmental Protection Agency | Final rule | Dec 18, 2025 |
Air Plan Approval; Ohio; Emergency Episodes and Ambient Air Quality Standards
2025-21322 | Environmental Protection Agency | Final rule | Nov 26, 2025 |
Air Plan Approval; California; Revised Format for Materials Incorporated by Reference
2025-15989 | Environmental Protection Agency | Final rule | Aug 21, 2025 |
National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma
2025-12800 | Environmental Protection Agency | Proposed rule | Jul 10, 2025 |
Air Plan Approval; California; Revised Format for Nonregulatory Provisions
2025-12586 | Environmental Protection Agency | Final rule | Jul 7, 2025 |
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Louisiana
2025-11341 | Environmental Protection Agency | Proposed rule | Jun 23, 2025 |
National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Oklahoma
2025-11265 | Environmental Protection Agency | Final rule | Jun 20, 2025 |
Air Plan Approval; California; Revised Format for Materials Incorporated by Reference
2025-10000 | Environmental Protection Agency | Final rule | Jun 4, 2025 |
Air Plan Approval; Wisconsin; Revised Format for Materials Incorporated by Reference
2025-06618 | Environmental Protection Agency | Final rule | Apr 22, 2025 |
Air Plan Revisions; California; California Mobile Source Regulations
2024-30246 | Environmental Protection Agency | Proposed rule | Dec 19, 2024 |
Inflation Adjustment References for Civil Monetary Penalty Amounts in Title 40 of the Code of Federal Regulations
2024-25669 | Environmental Protection Agency | Final rule | Nov 8, 2024 |
Air Quality Plans; California; San Diego County Air Pollution Control District; Permit Program
2024-09248 | Environmental Protection Agency | Proposed rule | Apr 30, 2024 |
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Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.