NATURAL RESOURCES DEFENSE COUNCIL, Sierra Club, Environmental Integrity Project v. ENVIRONMENTAL PROTECTION AGENCY and Stephen L. Johnson, Administrator, United States Environmental Protection Agency, Coalition for Responsible Waste Incineration Utility Air Regulatory Group Utility Solid Waster Activities Group, Intervenors American Municipal Power-Ohio, Inc. City of Dover, Ohio City of Hamilton, Ohio City of Orville, Ohio City of Painesville, Ohio, City of Shelby, Ohio City of St. Marys, Ohio v. Environmental Protection Agency, Respondent Natural Resources Defense Council Environmental Integrity Project v. Environmental Protection Agency and Stephen L. Johnson, Administrator, United States Environmental Protection Agency, Respondents Louisiana Environmental Action Network Sierra Club v. Environmental Protection Agency, Utility Solid Waster Activities Group, Intervenors Natural Resources Defense Council Sierra Club Environmental Integrity Project v. Environmental Protection Agency Stephen L. Johnson, Administrator, United States Environmental Protection Agency

Opinion for the court filed by Circuit Judge HENDERSON. Concurring opinion filed by Circuit Judge RANDOLPH. Opinion concurring in part and dissenting in part filed by Circuit Judge ROGERS. KAREN LeCRAFT HENDERSON, Circuit Judge. We address in this proceeding five petitions seeking review of two separate rules promulgated by the Environmental Protection Agency (EPA):