The Ninth Circuit reversed a lower court decision denying the award of attorney fees to an environmental group in their lawsuit against a town for discharging toxic pollutants into a bay in…

The D.C. Circuit denied a petition for review challenging EPA's decision granting California a waiver from federal preemption under the CAA that allows the state to implement its own…

The Fourth Circuit upheld a lower court's fee award in favor of environmental groups in their CAA case against an energy company. Below, the groups moved for summary judgment on the basis…

A district court denied two aviation associations' motions to intervene in a case asking the court to order EPA to use its authority under the CAA to regulate greenhouse gas emissions from…

The Ninth Circuit upheld EPA's determination that a California SIP that imposes limits on motor vehicle emissions for years 2009 and 2012 are adequate for purposes of the state's…

A district court dismissed claims that an energy company is responsible for PSD violations at five coal-fired power plants it owns in Illinois. The court previously granted the company's…

The Fifth Circuit granted EPA's request to transfer to the D.C. Circuit Texas' petition for review of the Agency's call for revisions to the state's SIP because its…

A district court held that the CAA preempts a city transit employee's negligence and strict liability claims against a company for injuries stemming from diesel exhaust fumes. The…

The Third Circuit dismissed a petition for review of an EPA letter opining that facilities operated by a landfill and a neighboring energy company were under common control for purposes of air…

The Ninth Circuit granted citizen groups' petition for review of a final action by EPA approving in part and disapproving in part revisions to California's SIP for meeting CAA air…