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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.
Published
Sep 25, 2025
Effective
Oct 27, 2025
Citation
90 FR 46070
Agencies
1
Full text not available in our database.
View on Federal Register →Get a plain-English explanation of what this regulation does, which agencies are responsible, and how it affects existing rules.
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EPA-R10-OAR-2024-0541
FRL-12449-02-R10
40 CFR 52