The D.C. Circuit dismissed a petition to review EPA's order denying an environmental group's objection to renewal of a Title V operating permit for a power plant in Utah. The group…

The D.C. Circuit dismissed environmental groups' lawsuit seeking to vacate an EPA rule that implements the CAA's new source review (NSR) permitting scheme in nonattainment areas. The…

The D.C. Circuit dismissed petitions challenging EPA's authorization of California regulations intended to reduce emissions of particulate matter and oxides of nitrogen from in-use nonroad…

The D.C. Circuit dismissed a truck association's lawsuit against EPA challenging California's tractor-trailer emission rules. The association argued that the state regulations…

The Ninth Circuit upheld the dismissal of a trucking association's federal preemption challenge to a California environmental regulation on diesel trucks. The regulation requires heavy-duty…

The D.C. Circuit denied a road building association's petition for review challenging EPA's CAA §209(e) regulations, which preempt certain state regulation of nonroad engines. In general…

The court affirms in part and reverses in part a district court grant of summary judgment in favor of the Bureau of Land Management (BLM) in a suit brought by an individual who alleged that a BLM…

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 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 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…