This action is part of EPA's national petroleum refinery initiative, and is included in the complaint to be filed shortly with the U.S. District Court for the Northern District of California under the caption U.S. v. Chevron U.S.A. Inc. The action involves five petroleum refineries, three of which are located in Region 9 (El Segundo and Richmond, California, and Kapolei, Hawaii). The United States' complaint will allege that Chevron violated, at one or more of its five refineries, one or more of the following requirements of the Clean Air Act: new source review and prevention of significant deterioration requirements; new source performance standards codified at 40 C.F.R. Part 60, Subparts J, VV, GGG; national emission standards for hazardous air pollutants codified at 40 C.F.R. Part 61, Subparts J, V, and FF, and Part 63, Subparts F, H, and CC; and relevant state implementation plan requirements that incorporate or implement the above-listed federal requirements. The complaint will also allege that Chevron violated Section 103 of the Comprehensive Environmental Response, Compensation, and Liability Act; Section 304 of the Emergency Planning and Community Right-to-Know Act; and Section 112(r) of the Clean Air Act at its El Segundo refinery. These additional allegations are part of a separate enforcement action that EPA Region 9 referred to the Department of Justice in September 2002, but will be resolved with the national petroleum refinery initiative settlement.