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 Montana Supreme Court held that where adequate alternative remedies exist under the common law or statute, the right to a clean and healthful environment under the Montana Constitution does…

A district court held that an insurance company has a duty to defend, but not indemnify, a plumber and his employer in an underlying action concerning damages suffered by an individual who inhaled…

A district court dismissed international shipping entities' lawsuit seeking to invalidate Michigan's Ballast Water Statute, which is aimed to prevent the introduction of aquatic nuisance…

The Ninth Circuit affirmed in part and reversed in part lower court rulings in an action initially brought by over 2,000 residents against the operators of the Hanford Nuclear Weapons Reservation…

A district court held that certain consulting costs an oil company incurred in mitigating and remediating a methyl tertiary butyl ether spill in Fort Montgomery, New York, do not qualify as…

A district court held that a county ordinance that bans the land application of "Los Angeles sludge" in the unincorporated areas of the county violates the Commerce Clause. The city of…

A California appellate court upheld water quality orders issued by a regional water board requiring a county to establish limitations for coliform effluent in groundwater underlying a county-…

A California appellate court reversed a lower court's grant of summary judgment in favor of an insurance company in a case involving several personal injury actions arising from the operation…

A California appellate court upheld a city's approval of changes in a plan for a large real estate development project in downtown Los Angeles. Rival developers argued that the modified…