Data / Federal rules / 2026-11843
Ozone Reclassification State Implementation Plan Rule
The Environmental Protection Agency published this proposed rule in the Federal Register on June 12, 2026. Comments closed on July 13, 2026.
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What the agency says
The U.S. Environmental Protection Agency (EPA) is reconsidering certain aspects of the January 2025 final rule entitled State Implementation Plan Submittal Deadlines and Implementation Requirements for Reclassified Nonattainment Areas Under the Ozone National Ambient Air Quality Standards ("January 2025 final rule"). Among other things, the January 2025 final rule codified a policy that certain State Implementation Plan (SIP) requirements for a prior classification remain due upon an area's reclassification to a higher classification. In this proposed action, the EPA is proposing a new interpretation that, upon reclassification, an area is subject only to those requirements in Clean Air Act (CAA) section 182 that are specific to that area's current classification. If finalized, this proposed rule would apply nationwide to all past and future reclassifications associated with the 2008, 2015, and any future ozone National Ambient Air Quality Standards (NAAQS). The EPA is not reconsidering or reopening any other aspect of the January 2025 final rule in this rulemaking and is not addressing the scope of applicable requirements for NAAQS other than the ozone NAAQS.
Key facts
- Document number
- 2026-11843
- Type
- Proposed rule
- Action
- Proposed rule
- Agency
- Environmental Protection Agency
- Published
- June 12, 2026
- Comments due
- July 13, 2026
- Dates
- Comments must be received on or before July 13, 2026.
- Docket
- EPA-HQ-OAR-2025-0201; FRL-11817.1-01-OAR
- Regulation ID (RIN)
- 2060-AW81
- Code of Federal Regulations
- 40 CFR 51
- Topics
- Administrative practice and procedure; Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen oxides; Ozone; Reporting and recordkeeping requirements; Volatile organic compounds
- Pages
- 11
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.