The Sixth Circuit held that seepage from a coal-fired power plant that reached a nearby lake violated RCRA, but not the CWA. Environmental groups argued that the chemicals being stored in coal ash ponds contaminated the surrounding groundwater, which in turn contaminated a nearby lake, in violation ...

The Ninth Circuit affirmed a district court's ruling that a Canadian smelter company that dumped several million tons of industrial waste into the Columbia River was liable for a Native American tribe's response costs. The company argued that CERCLA did not allow the tribe to recover its costs of es...