Regulation & law · 11/12/2025Updated: 10/16/2026 · 1 min read
EPA Approves Arizona Air Quality Plan
Summary
The Environmental Protection Agency has finalized approval of Arizona's air quality plan to reduce PM10 emissions in West Pinal County, a nonattainment area under the 1987 Clean Air Act standards.
Original source language: Federal Register — All DocumentsOpen original release →