Data / Federal rules / 2025-11413
Air Plan Approval; California; San Joaquin Valley 1-Hour Ozone Area; Maintenance Plan and Redesignation Request
The Environmental Protection Agency published this proposed rule in the Federal Register on June 23, 2025. Comments closed on July 23, 2025.
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What the agency says
The Environmental Protection Agency (EPA) is proposing to approve the "2023 Maintenance Plan and Redesignation Request for the Revoked 1-Hour Ozone Standard" ("San Joaquin Valley Maintenance Plan" or "Plan") as a revision to the state implementation plan (SIP) for the State of California. The San Joaquin Valley Maintenance Plan includes, among other elements, an emissions inventory consistent with attainment and contingency provisions. The EPA is also proposing to find that the State of California's request to redesignate the San Joaquin Valley area from nonattainment to attainment for the revoked 1979 1-hour national ambient air quality standard (NAAQS or "standard") for ozone ("1979 ozone NAAQS," "1-hour ozone NAAQS," or "1-hour ozone standard") meets all the Clean Air Act (CAA or "the Act") criteria for redesignation. Therefore, the EPA is proposing to terminate all anti-backsliding obligations for the San Joaquin Valley area for the revoked 1-hour ozone NAAQS.
Key facts
- Document number
- 2025-11413
- Type
- Proposed rule
- Action
- Proposed rule
- Agency
- Environmental Protection Agency
- Published
- June 23, 2025
- Comments due
- July 23, 2025
- Dates
- Written comments must arrive on or before July 23, 2025.
- Docket
- EPA-R09-OAR-2024-0611; FRL-12521-01-R9
- Code of Federal Regulations
- 40 CFR 52; 40 CFR 81
- Topics
- Air pollution control; Environmental protection; Incorporation by reference; Nitrogen dioxide; Reporting and recordkeeping requirements; Volatile organic compounds
- Pages
- 14
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 June 2025
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