Data / Federal rules / 2025-20205

Air Plan Approval; Colorado; Inspection and Maintenance Program Revision

The Environmental Protection Agency published this final rule in the Federal Register on November 18, 2025. It took effect on December 18, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is approving a revision to the Colorado State Implementation Plan (SIP). The revision includes changes to the motor vehicle inspection and maintenance (I/M) program of the State of Colorado. The EPA is taking this action pursuant to the Clean Air Act (CAA).

Key facts

Document number: 2025-20205
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: November 18, 2025
Takes effect: December 18, 2025
Dates: This rule is effective on December 18, 2025.
Docket: EPA-R08-OAR-2024-0468; FRL-12884-02-R8
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Carbon monoxide; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen oxides; Ozone; Reporting and recordkeeping requirements; 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 November 2025

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.