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Proposed rule

Approval and Promulgation of Air Quality Implementation Plans; Oklahoma; Regional Haze State Implementation Plan for the Second Implementation Period

Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Feb. 12, 2026. Document 2026-02843. Updated Nov. 15, 2026.

What it does

The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) revision submitted by the State of Oklahoma on August 9, 2022 (Oklahoma's 2022 SIP submission), to satisfy applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the program's second implementation (planning) period. Oklahoma's SIP submission addresses the requirement that states must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility, including regional haze, in mandatory Class I Federal areas. The SIP submission also addresses other applicable requirements for the second implementation period of the regional haze program. The EPA is taking this action pursuant to the CAA.

The Environmental Protection Agency's summary, as published in the Federal Register.

What it would change

1 part of Title 40 of the Code of Federal Regulations:

40 CFR 52

What happens next and when

Written comments must be received on or before March 16, 2026.

The agency's dates, word for word.

Document number2026-02843
ActionProposed rule.
AgenciesEnvironmental Protection Agency
PublishedFeb. 12, 2026
Comments closeMarch 16, 2026
DocketEPA-R06-OAR-2022-0736

Source: the Federal Register (public domain). The document in the Federal Register