National Parks Conservation 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 Parks Conservation Association filings
1

Activity

National Parks Conservation Association filed 1 comment on this docket between Nov 3, 2025 and Nov 3, 2025. 24 other organizations filed here. The comment window closed 239d ago.

What National Parks Conservation Association filed (1)

Nov 3, 2025· Comment submitted by National Parks Conservation Association (NPCA)· EPA-HQ-OAR-2025-1477-0013

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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