Data / Federal rules / 2025-13905

Interim Final Determination To Stay or Defer Sanctions; California; Mojave Desert Air Quality Management District

The Environmental Protection Agency published this final rule in the Federal Register on July 24, 2025. It took effect on July 24, 2025. Comments closed on August 25, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is making an interim final determination that the California Air Resources Board (CARB) has submitted a Clean Air Act (CAA or "Act") state implementation plan (SIP) revision on behalf of the Mojave Desert Air Quality Management District (MDAQMD or "District") that corrects deficiencies concerning the District's New Source Review (NSR) stationary source permitting program. This determination is based on a proposed conditional approval, published elsewhere in this issue of the Federal Register, of MDAQMD Rules. The effect of this interim final determination is to stay the application of the offset sanction and to defer or stay the action of the highway sanction that were triggered by the EPA's limited disapproval of MDAQMD Rules on June 30, 2023.

Key facts

Document number: 2025-13905
Type: Final rule
Action: Interim final determination
Agency: Environmental Protection Agency
Published: July 24, 2025
Takes effect: July 24, 2025
Comments due: August 25, 2025
Dates: This interim final determination is effective July 24, 2025. However, comments will be accepted on or before August 25, 2025.
Docket: EPA-R09-OAR-2025-0625; FRL-12877-01-R9
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Ammonia; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen oxides; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 3

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on ammonia · Rules on environmental protection · Published in July 2025

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