Data / Federal rules / 2024-28537

Air Plan Revisions; Arizona; Maricopa County Air Quality Department

The Environmental Protection Agency published this final rule in the Federal Register on December 9, 2024. It took effect on January 8, 2025.

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What the agency says

The Environmental Protection Agency (EPA) is taking final action to approve revisions to the Maricopa County Air Quality Department (MCAQD or "County") portion of the Arizona State Implementation Plan (SIP). These revisions concern emissions of volatile organic compounds (VOC) from storage, transfer, or loading of organic liquids and gasoline. We are approving local rules that regulate these emission sources under the Clean Air Act (CAA or the Act). We are also approving the MCAQD's reasonably available control technology (RACT) demonstration associated with these rules for the 2008 8-hour ozone national ambient air quality standards (NAAQS) in the Phoenix-Mesa ozone nonattainment area.

Key facts

Document number: 2024-28537
Type: Final rule
Action: Final rule
Agency: Environmental Protection Agency
Published: December 9, 2024
Takes effect: January 8, 2025
Dates: This rule is effective January 8, 2025.
Docket: EPA-R09-OAR-2023-0603; FRL-11596-02-R9
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Ozone; 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 December 2024

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.