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 diesel trucks, whose emissions contribute significantly to particulate matter and ozone pollution, to be upgra...

A district court held that an insurance company must defend and indemnify a manufacturing company for its costs responding to contamination at a landfill. The insurer argued that the policy's pollution exclusion clause barred coverage because the company intentionally discharged its waste into the l...

A district court held that CERCLA §113(f)(2) does not afford the U.S. government protection from contribution claims brought by a third-party PRP in a case involving cleanup costs incurred at the Quehanna Wild Area Nuclear Site in Pennsylvania. The U.S. government entered into a settlement agreemen...

A district court held that a corporation may be held liable under CERCLA for contamination stemming from smelting operations in the early 1900s by a subsidiary of the corporation's predecessor. Considering the totality of the circumstances, the smelting company was the alter ego of the corporation's...