Data / Federal rules / 2026-10280

Air Plan Revisions; Arizona; Arizona Department of Environmental Quality; Gila County Reasonably Available Control Technology

The Environmental Protection Agency published this final rule in the Federal Register on May 22, 2026. It took effect on June 22, 2026.

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What the agency says

The Environmental Protection Agency (EPA) is taking final action to approve, under the Clean Air Act (CAA or "Act"), revisions to the Arizona state implementation plan (SIP). These revisions concern the Arizona Department of Environmental Quality's (ADEQ's) demonstration regarding reasonably available control technology (RACT) requirements for the 2015 ozone national ambient air quality standards (NAAQS or "standards") within the Gila County portion of the Phoenix- Mesa ozone nonattainment area.

Key facts

Document number: 2026-10280
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: May 22, 2026
Takes effect: June 22, 2026
Dates: This rule is effective June 22, 2026.
Docket: EPA-R09-OAR-2025-2961; FRL-13073-02-R9
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen oxides; Ozone; Reporting and recordkeeping requirements; Volatile organic compounds
Pages: 4

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 May 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.