Data / Federal rules / 2025-17041

Air Plan Approval; Arkansas; Regional Haze State Implementation Plan for the Second Implementation Period

The Environmental Protection Agency published this proposed rule in the Federal Register on September 5, 2025. Comments closed on October 6, 2025.

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What the agency says

Pursuant to the Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve a State Implementation Plan (SIP) revision submitted by the State of Arkansas through the Division of Environmental Quality (DEQ) on August 8, 2022, and clarified by DEQ on July 29, 2025, as satisfying the requirements of the Act and the EPA's Regional Haze Rule (RHR) for visibility protection in mandatory Class I Federal areas (Class I areas) for the program's second implementation period. Arkansas' SIP submission addresses the requirement that states must revise their long-term strategies for making reasonable progress to prevent any future and remedy any existing man-made visibility impairment in the Class I areas. The EPA is taking this action pursuant to sections 110 and 169A of the CAA.

Key facts

Document number: 2025-17041
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: September 5, 2025
Comments due: October 6, 2025
Dates: Written comments must be received on or before October 6, 2025.
Docket: EPA-R06-OAR-2022-0735; FRL-9405-01-R6
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Environmental protection; Incorporation by reference; Intergovernmental relations; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 38

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 September 2025

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.