The court dismisses a power plants's motion to challenge the U.S. Environmental Protection Agency's (EPA's) determination that a proposed new plant, when combined with an existing…

The court affirms the U.S. Environmental Protection Agency's (EPA's) disapproval of a revision to the Michigan Clean Air Act (CAA) state implementation plan (SIP) that automatically…

The court upholds a district court dismissal for lack of subject matter jurisdiction of recreational groups' claims that the U.S. Forest Service violated the U.S. Constitution and the…

The court holds that a U.S. Environmental Protection Agency (EPA) rule establishing a bifurcated schedule for hazardous waste combustors to comply with strict new emission standards is arbitrary…

The court upholds the U.S. Environmental Protection Agency's (EPA's) approval of the Nevada Clean Air Act (CAA) state implementation plan (SIP) revision that requires gasoline sold in…

The court holds that U.S. Environmental Protection Agency (EPA) regulations limiting the content of volatile organic compounds (VOCs) in architectural coatings and paints under the Clean Air Act (…

The court holds that under the Clean Air Act (CAA), federal entities cannot remove to federal court state and local government actions to enforce air quality laws. A California air quality…

The court holds that the U.S. Environmental Protection Agency's (EPA's) regulations implementing Clean Air Act (CAA) amendments properly delegated to Native American nations authority to…

The court holds that a railroad's motion to dismiss a power company's Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) cost recovery action against it for…

The court holds that developers' sidecasting of dredged spoil in a jurisdictional wetland constitutes the discharge of a pollutant under the Clean Water Act (CWA). The court first holds that…