Air Plan Approval; Washington; Regional Haze State Implementation Plan for the Second Implementation Period
air-emissions · Rule · Published 2025-09-25 · Effective 2025-10-27 · WA · 90 FR 46070
Document
Document number
2025-18599
Federal Register citation
90 FR 46070
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2025-09-25
Effective date
2025-10-27
State
WA
EPA docket
EPA-R10-OAR-2024-0541
Abstract
The Environmental Protection Agency (EPA) is approving the regional haze State implementation plan (SIP) revision, submitted by Washington on January 28, 2022, to address applicable requirements under the Clean Air Act (CAA) and the EPA's Regional Haze Rule (RHR) for the regional haze program's second implementation period.