The First Circuit vacated and remanded a lower court decision dismissing environmental groups' CWA claims against the operators of four hydroelectric dams along the Kennebec River. The groups alleged that the operators are in violation of their water quality certifications, and thus the CWA, because...

The Fourth Circuit held that a coal company may not assert the CWA's "permit shield" defense for discharges of selenium when it failed to disclose the presence of this pollutant during the permit application process. The company argued that because it disclosed the pollutants that it knew or had rea...

The D.C. Circuit upheld EPA's and the U.S. Army Corps of Engineers' Enhanced Coordination Process memorandum, which concerns CWA §404 mining permit applications, as well as an EPA guidance document relating to such permits, against challenges from the mining industry and two states. The Enhanced Co...