Cases filed in the Tenth Circuit Courts
Cases 1 - 10 of 24
State of Utah v. United States Environmental Protection Agency et al
as 2:2023cv00827
Plaintiff: State of Utah
Defendant: United States Environmental Protection Agency and Michael S. Regan
Cause Of Action: 42 U.S.C. § 7604 Clear Air Act (Emission Standards)
PacifiCorp v. United States Environmental Protection Agency et al
as 2:2023cv00200
Defendant: United States Environmental Protection Agency Administrator, United States Environmental Protection Agency, Michael S. Regan and others
Plaintiff: PacifiCorp
Cause Of Action: 42 U.S.C. § 7604 Clear Air Act (Emission Standards)
PacifiCorp v. United States Environmental Protection Agency et al
as 2:2023cv00771
Plaintiff: PacifiCorp
Defendant: United States Environmental Protection Agency and Michael S. Regan
Cause Of Action: 42 U.S.C. § 7604 Clear Air Act (Emission Standards)
Energy Transfer LP v. EPA, et al
as 23-9569
Petitioner: ENERGY TRANSFER LP
Respondent / Appellee: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY and MICHAEL S. REGAN, Administrator
State of Colorado v. EPA, et al
as 23-9566
Petitioner: STATE OF COLORADO
Respondent: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY and MICHAEL S. REGAN, Administrator, Environmental Protection Agency
Center for Biological Diversity, et al v. EPA, et al
as 23-9565
Petitioner: CENTER FOR BIOLOGICAL DIVERSITY and 350 COLORADO
Respondent: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY and MICHAEL S. REGAN, Administrator, United States Environmental Protection Agency
State of Oklahoma, et al v. U.S. Environmental Protection Agency, et al
as 23-9561
Petitioner: STATE OF OKLAHOMA, by and through its Attorney General, GENTNER F DRUMMOND and OKLAHOMA DEPARTMENT OF ENVIRONMENTAL QUALITY
Respondent: U.S. ENVIRONMENTAL PROTECTION AGENCY and MICHAEL S. REGAN, Administrator, U.S. EPA
PacifiCorp, et al v. EPA, et al
as 23-9557
Petitioner: PACIFICORP, DESERET GENERATION & TRANSMISSION CO-OPERATIVE, UTAH MUNICIPAL POWER AGENCY and others
Respondent: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY and MICHAEL S. REGAN, Administrator, U.S. Environmental Protection Agency
Tulsa Cement v. EPA, et al
as 23-9551
Petitioner: TULSA CEMENT LLC, d/b/a Central Plains Cement Company LLC
Respondent: UNITED STATES ENVIRONMENTAL PROTECTION AGENCY and MICHAEL S. REGAN, Administrator, United States Environmental Protection Agency
Villegas et al v. Regan et al
as 2:2023cv02171
Plaintiff: Thomas Villegas and Amy Villegas
Defendant: Michael S. Regan, Meg McCollister and David Cozad
Cause Of Action: 05 U.S.C. § 702 Administrative Procedure Act

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