A district court denied in part and granted in part EPA's motion to dismiss property owners' lawsuit challenging the constitutionality of an EPA compliance order under CWA §309. EPA…

The D.C. Circuit upheld the dismissal of an environmental group's NEPA and CWA claims against the U.S. government in connection with a 593-mile oil pipeline that runs from Illinois to…

A district court upheld EPA's decision to withdraw a proposed rule that would have required concentrated animal feeding operations (CAFOs) to provide information to the Agency to help…

A district court held that its preliminary injunction enjoining EPA and the U.S. Army Corps of Engineers from implementing the "waters of the United States" rule only extends to the 13…

A district court dismissed EPA's enforcement action against a developer for filling wetlands in violation of the CWA and ordered the Agency to pay attorney fees the developer incurred…

A district court preliminarily enjoined EPA's and the U.S. Army Corps of Engineers' controversial "waters of the United States" rule. Thirteen states—Alaska, Arizona, Arkansas…

A district court held that it lacked jurisdiction over a coal company's lawsuit challenging EPA's and the U.S. Army Corps of Engineers' controversial "waters of the United…

The Ninth Circuit held that the U.S. Bureau of Reclamation did not violate the CWA by discharging pollutants into the Klamath River without a permit in connection with its management of an…

A district court held that a mining company violated state and federal permits when it discharged high levels of ionic pollution. Environmental groups successfully demonstrated that high…

The D.C. Circuit denied an environmental group's petition for review challenging FERC's decision to issue a natural gas pipeline operator a certificate of public convenience and…