The Fourth Circuit affirmed a lower court decision allocating response costs to various PRPs in connection with the cleanup of hazardous substances at a former fertilizer manufacturing site in Charleston, South Carolina.

The Ninth Circuit affirmed the dismissal of an environmental group's citizen suit against two electric companies alleging that their utility poles discharged wood preservative into the environment in violation of the CWA and RCRA.

The Ninth Circuit affirmed a lower court's grant of summary judgment in favor of DOI in water districts' lawsuit challenging the agency's management of California's Central Valley Project.