Prevention of significant deterioration (PSD)

The court holds that the best available retrofit technology (BART) provisions of the U.S. Environmental Protection Agency's (EPA's) regional haze rule violate the Clean Air Act (CAA),…

The court upholds the U.S. Environmental Protection Agency's (EPA's) redesignation of five parcels of tribal land as a nonfederal Class I area under the Clean Air Act (CAA) prevention of…