Coalition for Clean Air Sierra Club, Inc. v. United States Environmental Protection Agency, and South Coast Air Quality Management District, Defendant-Intervenor v. Southern California Edison Company Southern California Gas Company Southern California Association of Governments, Plaintiff-Intervenors. Coalition for Clean Air Sierra Club, Inc., Southern California Edison Company Southern California Gas Company Southern California Association of Governments, Plaintiff-Intervenors-Appellees v. South Coast Air Quality Management District, Defendant-Intervenor-Appellant, United States Environmental Protection Agency, Coalition for Clean Air Sierra Club, Inc. v. United States Environmental Protection Agency v. Southern California Edison Company, Plaintiff-Intervenor-Appellee

971 F.2d 219 35 ERC 1609 , 22 Envtl. L. Rep. 21 ,274 COALITION FOR CLEAN AIR; Sierra Club, Inc., Plaintiffs-Appellants, v. United States Environmental Protection Agency, Defendant-Appellee, and South Coast Air Quality Management District, Defendant-Intervenor, v. SOUTHERN CALIFORNIA EDISON COMPANY; Southern California Gas Company; Southern California Association of Governments, Plaintiff-Intervenors. COALITION FOR CLEAN AIR; Sierra Club, Inc., Plaintiffs-Appellees, Southern California Edison Company; Southern California Gas Company; Southern California Association of Governments, Plaintiff-Intervenors-Appellees, v. SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT, Defendant-Intervenor-Appellant, United States Environmental Protection Agency, et al., Defendants. COALITION FOR CLEAN AIR; Sierra Club, Inc., Plaintiffs-Appellants, v. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY, Defendant-Appellee, v. SOUTHERN CALIFORNIA EDISON COMPANY, Plaintiff-Intervenor-Appellee. Nos. 91-55383, 91-55386 and 91-55634. United States Court of Appeals, Ninth Circuit. Argued and Submitted April 10, 1992. * Decided July 1, 1992. Alan Waltner, Gorman & Waltner, Oakland, Cal., for…