Approval of Air Quality Implementation Plans; Arizona; Arizona Department of Environmental Quality; Stationary Source Permits; West Pinal County; PM10
air-emissions · Rule · Published 2025-12-11 · Effective 2026-01-12 · AZ · 90 FR 57365
Document
Document number
2025-22582
Federal Register citation
90 FR 57365
CFR reference
40 CFR 52
Type
Rule
Action
Final action.
Category
air-emissions
Publication date
2025-12-11
Effective date
2026-01-12
State
AZ
EPA docket
EPA-R09-OAR-2025-1113
Abstract
The Environmental Protection Agency (EPA) is taking final action to fully approve the Arizona Department of Environmental Quality's (ADEQ or "State") portion of the Arizona State Implementation Plan (SIP) under the Clean Air Act (CAA or "the Act") that addresses Nonattainment New Source Review (NNSR) permitting for precursor emissions from major stationary sources for purposes of the 1987 PM<INF>10</INF> National Ambient Air Quality Standards (NAAQS or standard) in the West Pinal PM<INF>10</INF> nonattainment area.