Air Plan Partial Approval and Partial Disapproval; Utah; Regional Haze State Implementation Plan for the Second Implementation Period; Air Plan Disapproval; Utah; Prong 4 (Visibility) for the 2015 8-Hour Ozone National Ambient Air Quality Standard
air-emissions · Rule · Published 2024-12-02 · Effective 2025-01-02 · UT · 89 FR 95117
Document
Document number
2024-27941
Federal Register citation
89 FR 95117
CFR reference
40 CFR 52
Type
Rule
Action
Final rule.
Category
air-emissions
Publication date
2024-12-02
Effective date
2025-01-02
State
UT
EPA docket
EPA-R08-OAR-2024-0389
Abstract
The Environmental Protection Agency (EPA) is partially approving and partially disapproving a regional haze state implementation plan (SIP) revision submitted by the State of Utah on August 2, 2022 (Utah's regional haze SIP submission), 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. Additionally, the EPA is disapproving the visibility transport "Prong 4" portion of Utah's infrastructure SIP submission submitted on January 9, 2020, for the 2015 Ozone National Ambient Air Quality Standard (NAAQS). The EPA is taking these actions pursuant to the CAA.