Data / Federal rules / 2026-00006

Air Plan Revision; California; Placer County Air Pollution Control District; New Source Review

The Environmental Protection Agency published this final rule in the Federal Register on January 6, 2026. It took effect on February 5, 2026.

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What the agency says

The Environmental Protection Agency (EPA) is taking final action to approve a permitting rule submitted as a revision to the Placer County Air Pollution Control District (PCAPCD or "District") portion of the California state implementation plan (SIP). This revision concerns the District's Nonattainment New Source Review permitting program for new and modified major stationary sources of air pollution in nonattainment areas under part D of title I of the Clean Air Act (CAA or "Act"). We are approving a local rule that has been revised to address deficiencies previously identified by the EPA in a prior action that included a limited approval and limited disapproval of a prior version of the rule. This final action stops all sanction and Federal implementation plan clocks started by our September 26, 2023 limited approval and limited disapproval and deferred by our April 2, 2025 interim final determination.

Key facts

Document number: 2026-00006
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: January 6, 2026
Takes effect: February 5, 2026
Dates: This rule is effective February 5, 2026.
Docket: EPA-R09-OAR-2024-0620; FRL-12530-03-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 January 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.