Data / Federal rules / 2026-11735

Attainment Date Extension for the San Joaquin Valley, California 2012 Annual PM2.5 Fine Particulate Matter Nonattainment Area

The Environmental Protection Agency published this proposed rule in the Federal Register on June 11, 2026. Comments closed on July 13, 2026.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to grant an extension of the applicable "Serious" area attainment date for the San Joaquin Valley nonattainment area for the 2012 annual fine particulate matter (PM<INF>2.5</INF>) national ambient air quality standards (NAAQS or "standards") from December 31, 2025, to December 31, 2030, based on a proposed determination that the State has satisfied the statutory criteria for this extension. The EPA will accept comments on this proposed rulemaking during a 30-day public comment period.

Key facts

Document number: 2026-11735
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: June 11, 2026
Comments due: July 13, 2026
Dates: Comments must be received on or before July 13, 2026.
Docket: EPA-R09-OAR-2026-3665; FRL-13380-01-R9
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Ammonia; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Particulate matter; Reporting and recordkeeping requirements; Volatile organic compounds
Pages: 9

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 June 2026

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.