Revisions to the Arizona State Implementation Plan, Arizona Department of Environmental Quality

Streszczenie

EPA is finalizing approval of revisions to the Arizona Department of Environmental Quality (ADEQ) portion of the Arizona State Implementation Plan (SIP). These revisions were proposed in the Federal Register on April 22, 2004, and concern opacity standards related to particulate matter (PM-10) emissions from industrial processes. We are approving local rules that regulate these emission sources under the Clean Air Act as amended in 1990 (CAA or the Act).