Open for CommentEPA· Environmental Protection AgencyProposed Rule

Partial Approval and Partial Disapproval of Air Quality Implementation Plans; Hawaii; Regional Haze State Implementation Plan for the Second Implementation Period

Introduced February 17, 2026Comment period ends April 21, 2026View on regulations.gov ↗
💬 Closes in 33 daysDeadline: Apr 21, 2026

What This Means

Hawaii submitted a plan to the EPA about how it will protect air quality and reduce haze at national parks and wilderness areas over the next several years. The EPA is partially accepting and partially rejecting Hawaii's plan, meaning some parts meet federal requirements while other parts need more work or better explanation. This matters because clean air at Hawaii's scenic areas depends on the state having an approved plan that actually reduces pollution from sources like power plants and vehicles.

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Details

TypeFederal Regulation
AgencyEPA · Environmental Protection Agency
Regulations.gov IDEPA-R09-OAR-2025-0152-0001
IntroducedFebruary 17, 2026
Comment DeadlineApril 21, 2026

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