National Tribal Air Association
EPARulemakingEPA-HQ-OAR-2025-1477

Visibility Protection: Regional Haze State Plan Requirements Rule Revision

RIN
Last modified
Dec 2, 2025
Comment window
closed 239d ago
National Tribal Air Association filings
1

Activity

National Tribal Air Association filed 1 comment on this docket between Dec 2, 2025 and Dec 2, 2025. 24 other organizations filed here. The comment window closed 239d ago.

What National Tribal Air Association filed (1)

Dec 2, 2025· Comment submitted by National Tribal Air Association (NTAA)· EPA-HQ-OAR-2025-1477-0025

Filed on regulations.gov — full text not in the inline record.

Abstract

Consistent with the EPA Administrator’s regulatory agenda announcement in March 2025, the EPA intends to restructure the Regional Haze Program Rule (40 CFR Part 51 Subpart P). This rulemaking effort is expected to focus on future regional haze planning obligations for states. The rule restructuring effort will ensure that it fulfills Congressional intent, is based on current scientific and technical information, and reflects recent improvements in air quality. As a first step, the EPA intends to issue an advance notice of proposed rulemaking to solicit ideas and potential approaches to include in a forthcoming notice of proposed rulemaking.

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Visibility Protection: Regional Haze State Plan Requirements Rule Revision (EPA) — National Tribal Air Association | OpenPolis