Data / Federal rules / 2025-13906

Air Plan Revisions; California; Mojave Desert Air Quality Management District; New Source Review; Stationary Source Permits

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

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What the agency says

The Environmental Protection Agency (EPA) is proposing conditional approval of five permitting rules as a revision to the Mojave Desert Air Quality Management District (MDAQMD) portion of the California State Implementation Plan (SIP). These are revisions to the District's New Source Review (NSR) air permitting program rules for new and modified sources of air pollution under the Clean Air Act (CAA or "Act"). The submitted rules address deficiencies identified in a previous limited disapproval action and incorporate other revisions related to the NSR permitting requirements. If finalized, this action will update the MDAQMD's current SIP with the revised rules. As a separate action in this Federal Register, we are making an interim final determination that will stay or defer the imposition of CAA sanctions associated with our previous limited disapproval action.

Key facts

Document number: 2025-13906
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: July 24, 2025
Comments due: August 25, 2025
Dates: Comments must be received on or before August 25, 2025.
Docket: EPA-R09-OAR-2025-0625; FRL-12877-02-R9
Code of Federal Regulations: 40 CFR 52
Topics: Administrative practice and procedure; Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Volatile organic compounds
Pages: 6

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on administrative practice and procedure · Rules on air pollution control · Rules on environmental protection · Published in July 2025

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