The Mississippi Supreme Court reversed and remanded a lower court decision that the state's transportation agency did not effect a categorical or regulatory taking when it pledged approximately 1,300 acres of a developer's property for wetlands mitigation as part of its application for a dredge and ...

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 determined that, in the course of developing the property, the owners discharged dredge and fill materials into water...

A district court granted in part motions to dismiss an oil company's OPA, Pipeline Safety Act, and Maryland state-law claims against the alleged owners and operators of an underground pipeline in southeast Baltimore. The company filed suit to recover damages it incurred due to a pipeline leak. All o...

A district court upheld the U.S. Army Corps of Engineers' decision to issue a general nationwide permit—NWP 21—authorizing discharges from certain coal mining activities into navigable waters. Despite environmental groups' arguments to the contrary, the Corps' issuance of NWP 21 was neither arbi...

A district court denied motions to dismiss environmental groups' CWA citizen suit against an energy company for alleged NPDES permit violations at a retired coal-fired power plant. The groups alleged that the company unlawfully discharged pollutants through engineered seeps, non-engineered seeps, an...