The Fifth Circuit affirmed in part and reversed in part a lower court decision dismissing an environmental group's CWA, CERCLA, and EPCRA claims against BP and Transocean Ltd. following the Deepwater Horizon disaster. BP leased the mobile offshore drilling unit known as Deepwater Horizon from Transo...

A district court held that a mining company that operates a smelter in Canada is liable as an arranger under CERCLA for the release and threatened release of hazardous substances in the Upper Columbia River. The company stipulated that it discharged slag and effluent into the Columbia River from its...