Data / Federal rules / 2025-24141
Air Plan Approval; Colorado; Revisions to Colorado Procedural Rules and Common Provisions Regulation
The Environmental Protection Agency published this final rule in the Federal Register on January 2, 2026. It took effect on March 3, 2026. Comments closed on February 2, 2026.
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What the agency says
The Environmental Protection Agency (EPA) is taking direct final action to approve revisions to the Colorado State Implementation Plan (SIP) that were submitted by the Colorado Department of Public Health and Environment (CDPHE) on May 20, 2022. CDPHE requested EPA approval of revisions to the Colorado's Procedural Rules and Common Provisions Regulation. The revised rules include non-substantive updates to rule language that are administrative in nature and were intended to provide for general cleanup and improved readability. The EPA is approving these SIP revisions because it has determined that they are in accordance with the requirements for SIP provisions under the Clean Air Act (CAA).
Key facts
- Document number
- 2025-24141
- Type
- Final rule
- Action
- Direct final rule
- Agency
- Environmental Protection Agency
- Published
- January 2, 2026
- Takes effect
- March 3, 2026
- Comments due
- February 2, 2026
- Dates
- This direct final rule is effective on March 3, 2026, without further notice, unless the EPA receives adverse comment by February 2, 2026. If adverse comments are received, the EPA will publish a timely withdrawal of the direct final rule, or the relevant provisions of the rule, in the Federal Register informing the public that the rule will not take effect.
- Docket
- EPA-R08-OAR-2024-0550; FRL-13050-02-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
Other documents from the Environmental Protection Agency
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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.