The court vacates the U.S. Environmental Protection Agency's (EPA's) approval of the revised ozone state implementation plans (SIPs) for the Washington, D.C., Metropolitan Area (Washington Metropolitan Area), made up of the District of Columbia, portions of Maryland, and portions of Virginia. The di...

The court holds that the Secretary of the Pennsylvania Department of Transportation and the Secretary of the Pennsylvania Department of Environmental Protection violated the Clean Air Act (CAA) by failing to implement state implementation plan (SIP)-required emission standards for the state's enhanc...

The court grants an environmental group's motion for partial summary judgment against Pennsylvania officials for failing to implement the state-enhanced vehicle inspection and maintenance (I/M) program in 16 counties by November 15, 1999, as required by the Pennsylvania state implementation plan (SI...

The court holds that under Ohio law, the doctrine of res judicata bars property owners' Resource Conservation and Recovery Act (RCRA) suit against the property's seller for leaving gasoline buried in the soil. The owners filed their RCRA suit in federal court after they litigated contract and fraud ...

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 court first holds that Arizona's chamber of commerce lacks standing ...

The court holds that trade associations' action for judicial review of a U.S. Environmental Protection Agency (EPA) rule permitting the use of "any credible evidence" to prove or disprove Clean Air Act (CAA) violations is not ripe for review. The heart of the associations' argument is that the credi...

The court upholds a U.S. Environmental Protection Agency (EPA) rule adding nitrate compounds to the toxics release inventory (TRI) under the Emergency Planning and Community Right-to-Know Act (EPCRA). EPA's draft guidelines for listing a chemical on the TRI provide that one consideration in a listin...

The court holds that the Resource Conservation and Recovery Act (RCRA) bars a current property owner's claim for cleanup costs against the property's former owner. The current owner filed a claim for injunctive relief against the former owner, and then proceeded to clean up the property before relie...

The court upholds the U.S. Environmental Protection Agency's (EPA's) decision to add coal and oil-burning electricity-generating facilities to the list of facilities subject to toxic release inventory (TRI) reporting requirements under the Emergency Planning and Community Right-to-Know Act (EPCRA). ...

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 management district brought a suit against the United States in state court seeking civil penalties for a U.S. ...