Partial Stay; Arizona; Regional Haze Federal Implementation Plan

The Environmental Protection Agency (EPA) is granting an administrative stay of specific provisions of the Arizona Regional Haze Federal Implementation Plan (FIP) applicable to the Phoenix Cement Company (PCC) Clarkdale Plant and the CalPortland Company (CPC) Rillito Plant under the Clean Air Act (CAA). In response to requests from PCC and CPC, we are staying the effectiveness of control technology optimization requirements for nitrogen oxides (NOX) applicable to Kiln 4 at the Clarkdale Plant and Kiln 4 at the Rillito Plant during the EPA's reconsideration of these requirements under CAA section 307(d)(7)(B) for a period of 90 days. Today's action reflects this stay in the Code of Federal Regulations.