WASHINGTON, March 4 -- Environmental Protection Agency has issued a proposed rule called: Air Plan Approval; Arizona; Attainment Plan for the Hayden SO.
The proposed rule was published in the Federal Register on March 4 by Michael Martucci, Acting Regional Administrator, Region IX.
Summary: The Environmental Protection Agency (EPA) is proposing to approve revisions to the Arizona state implementation plan (SIP) for attaining the 1971 and 2010 sulfur dioxide (SO 2) national ambient air quality standards (NAAQS or "standards") in the Hayden SO 2nonattainment area. These SIP revisions, collectively referred to as the "Hayden SO 2Plan" or "Plan, " include Arizona's attainment demonstration and other elements required under Clean Air Act (CAA ...