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Redesignation of class areas

Michigan v. EPA

The Seventh Circuit dismissed Michigan's petition for review of an EPA rule redesignating certain Native American lands to Class I status under the CAA's prevention of significant deterioration (PSD) program. Michigan's challenge raises...

Great Basin Mine Watch v. EPA

The Ninth Circuit held that the U.S. Environmental Protection Agency (EPA) did not act arbitrarily, capriciously, or contrary to law when it granted Nevada's request to split one of its clean air areas into two. Contrary to an...

Arizona v. EPA

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 significant deterioration (PSD) program. The...