Data / Federal rules / 2025-20495
Air Plan Approval; Michigan; Infrastructure SIP Requirements for the 2015 Ozone NAAQS; Michigan State Board Requirements
The Environmental Protection Agency published this final rule in the Federal Register on November 20, 2025. It took effect on January 20, 2026. Comments closed on December 22, 2025.
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What the agency says
The Environmental Protection Agency (EPA) is approving an element of a State Implementation Plan (SIP) submission from Michigan regarding the infrastructure requirements of section 110 of the Clean Air Act (CAA) for the 2015 ozone National Ambient Air Quality Standards (NAAQS). The infrastructure requirements ensure that the structural components of each State's air quality management program are adequate to meet CAA requirements. This action pertains to CAA section 110(a)(2)(E)(ii).
Key facts
- Document number
- 2025-20495
- Type
- Final rule
- Action
- Direct final rule
- Agency
- Environmental Protection Agency
- Published
- November 20, 2025
- Takes effect
- January 20, 2026
- Comments due
- December 22, 2025
- Dates
- This direct final rule will be effective January 20, 2026, unless EPA receives adverse comments by December 22, 2025. If adverse comments are received, EPA will publish a timely withdrawal of the direct final rule in the Federal Register informing the public that the rule will not take effect.
- Docket
- EPA-R05-OAR-2019-0215; FRL-13010-02-R5
- Code of Federal Regulations
- 40 CFR 52
- Topics
- Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen oxides; Ozone; Volatile organic compounds
- Pages
- 4
Other documents from the Environmental Protection Agency
Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on environmental protection · Rules on incorporation by reference · Published in November 2025
Read from the Federal Register API, last updated 2026-10-24. 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.