The court holds that the U.S. Environmental Protection Agency's (EPA's) construction of the Clean Air Act (CAA) in promulgating the revised national ambient air quality standards (NAAQS…

The court reverses a district court's dismissal of a peat company's Federal Water Pollution Control Act (FWPCA) §404 and takings claims against the federal government concerning a…

The court holds that the U.S. Department of Transportation's (DOT's) approval of a 12-lane bridge to replace an existing 6-lane bridge in Alexandria, Virginia, violated the Clean Air Act…

The court holds that it has subject matter jurisdiction over an environmental group's Clean Air Act (CAA) citizen suit that alleged emission and reporting violations at a refinery. The court…

The court holds unlawful U.S. Environmental Protection Agency (EPA) regulations that allow both local approval and federal funding of transportation projects that fail to satisfy the Clean Air Act…

The court remands a municipality's request for litigation costs relating to its successful challenge of a U.S. Environmental Protection Agency (EPA) Clean Air Act (CAA) rule establishing new…

The court grants summary judgment to a company that allegedly violated its Federal Water Pollution Control Act (FWPCA) §404 permit by filling wetlands in contradiction of its mitigation plan. The…

The court holds that an electric utility lacks standing to petition for review a U.S. Environmental Protection Agency (EPA) final rule approving a revision to the new source review program of…

The court denied a petition to review the U.S. Environmental Protection Agency's (EPA's) approval of a revision to Missouri's state implementation plan (SIP) that replaced four area…

The court affirms a district court decision enjoining further construction on a Kansas highway project until the Federal Highway Administration (FHwA) completes a National Environmental Policy Act…