Data / Federal rules / 2025-12867

Air Plan Approval; California; Mojave Desert Air Quality Management District; Definition of Terms

The Environmental Protection Agency published this proposed rule in the Federal Register on July 10, 2025. Comments closed on August 11, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to approve revisions to the Mojave Desert Air Quality Management District (MDAQMD or "the District") portion of the California State Implementation Plan (SIP). These revisions concern definitions that are necessary to implement and enforce local rules that regulate air pollution. We are proposing to approve a definitions rule under the Clean Air Act (CAA or the "Act"). We are also proposing to approve the rescission of earlier versions of this rule from the California SIP as they are no longer needed to under the CAA. We are taking comments on this proposal and plan to follow with a final action.

Key facts

Document number: 2025-12867
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: July 10, 2025
Comments due: August 11, 2025
Dates: Comments must be received on or before August 11, 2025.
Docket: EPA-R09-OAR-2022-0858; FRL-10563-01-R9
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Ozone; Particulate matter; Reporting and recordkeeping requirements; 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 environmental protection · Rules on incorporation by reference · Published in July 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.