# Air Plan Approval; Colorado; Inspection and Maintenance Program Revision
> **Rule** · Final rule. · Published 2025-11-18 · Effective 2025-12-18 · 90 FR 51515
## Document
- **Document number:** 2025-20205
- **Category:** air-emissions
- **Federal Register citation:** 90 FR 51515
- **CFR reference:** 40 CFR 52
- **Publication date:** 2025-11-18
- **Effective date:** 2025-12-18
- **State:** CO
- **EPA docket:** EPA-R08-OAR-2024-0468
## Abstract

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).

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/11/18/2025-20205/air-plan-approval-colorado-inspection-and-maintenance-program-revision)
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