A district court held that the Clean Air Act (CAA) does not preempt a local air district rule that requires developers to reduce nitrogen oxide and particulate matter emissions from their projects…

The Ninth Circuit affirmed a lower court decision that the Clean Air Act (CAA) does not preempt certain provisions of local "fleet rules" requiring operators to meet specified emission…

The court affirms a district court holding that the Clean Air Act (CAA) does not preempt California's ban of the use of methyl tertiary butyl ether (MTBE) in oxygenated fuel. CAA §…

The court denies most of oil companies' motions to dismiss in a class action suit brought by individual well owners claiming that the companies knowingly caused methyl tertiary butyl ether (…

The court holds that an automobile manufacturers association is entitled to attorney fees in connection with an underlying action in which New York's zero emission vehicle sales requirement…

The court holds that New York's zero emission vehicle (ZEV) sales requirement for model years 1998-2002 is preempted by Clean Air Act (CAA) §209. The court first holds that the ZEV sales…

A district court holds that the Clean Air Act (CAA) does not preempt New York's zero emission vehicle (ZEV) sales mandate and dismisses an action brought by automobile manufacturers seeking…