Data / Federal rules / 2024-30695

Air Plan Approval; Revisions to Colorado Common Provisions Regulation

The Environmental Protection Agency published this final rule in the Federal Register on December 27, 2024. It took effect on January 27, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving revisions to the Common Provisions Regulation of the Colorado State Implementation Plan (SIP). These revisions were submitted by the State of Colorado in response to the EPA's June 12, 2015, Findings of Substantial Inadequacy and "SIP calls" for certain provisions in the SIP related to affirmative defenses applicable to excess emissions during startup, shutdown, and malfunction (SSM) events. The EPA is approving these SIP revisions because the Agency has determined that they are in accordance with the requirements for SIP provisions under the Clean Air Act (CAA or the Act).

Key facts

Document number: 2024-30695
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: December 27, 2024
Takes effect: January 27, 2025
Dates: This rule is effective on January 27, 2025.
Docket: EPA-R08-OAR-2024-0207; FRL-12341-02-R8
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Carbon monoxide; Environmental protection; Greenhouse gases; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 3

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in December 2024

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.