OKLAHOMA v. U.S. E.P.A.

Attorney(s) appearing for the Case

E. Scott Pruitt , Oklahoma Attorney General, ( P. Clayton Eubanks , Assistant Attorney General; Michael Graves and Thomas P. Schroedter of Hall Estill, Tulsa, OK, with him on the briefs), Oklahoma City, OK, for Petitioners State of Oklahoma and Oklahoma Industrial Energy Consumers.

Brian J. Murray of Jones Day, Chicago, IL, ( Thomas E. Fennell of Jones Day, Dallas, Texas; Michael L. Rice of Jones Day, Houston, TX; Charles T. Wehland of Jones Day, Chicago, IL, on the briefs), for Petitioner Oklahoma City Gas & Electric Company.

Stephanie J. Talbert , United States Department of Justice, Environment & Natural Resources Division, Environmental Defense Section, Washington, D.C. ( Ignacia S. Moreno , Assistant Attorney General; M. Lea Anderson and Barbara Nann , Of Counsel, United States Environmental Protection Agency, with her on the brief), for Respondent.

Andrea Issod , ( Elena Saxonhouse and Sanjay Narayan with her on the brief), San Francisco, CA, for the Intervenor, Sierra Club.

Michael G. Jenkins , Assistant General Counsel, PacifiCorp Energy, Salt Lake City, Utah, and E. Blaine Rawson , Ray Quinney & Nebeker, P.C., Salt Lake City, UT, filed an amicus curiae brief on behalf of PacifiCorp, Amicus Curiae.

Paul M. Seby and Marian C. Larsen of Moye White LLP, Denver, CO, filed an amicus curiae brief on behalf of the American Coalition for Clean Coal Electricity, Amicus Curiae.

Stephanie Kodish , Knoxville, TN, filed an amicus curiae brief on behalf of the National Parks Conservation Association, Amicus Curiae.

Before BRISCOE, Chief Judge, KELLY and LUCERO, Circuit Judges.