A district court denied oil and gas companies' motions to dismiss claims that their use and handling of methyl tertiary butyl ether (MTBE) has contaminated, or threatens to contaminate, groundwater in Puerto Rico. The companies argued that Puerto Rico's island-wide claims for relief should be dismis...

A district court held that an environmental group may go forward with its CWA and NEPA lawsuit against a water district, the U.S. Army Corps of Engineers, and the owner of the largest federal mitigation bank in the United States over claims that the defendants have taken actions to use and develop t...

A district court dismissed a mitigation bank owner's APA claims against the U.S. Army Corps of Engineers for requiring a CWA §404 permittee to purchase "invalid" banking credits from another mitigation bank in connection with a railroad project. The owner claimed that despite the fact that his miti...

A district court dismissed several claims a group of cattle ranchers filed against USDA and DOI concerning actions taken to protect the New Mexico meadow jumping mouse, an endangered species. Following the listing of the species in 2014, the U.S. Forest Service proposed to erect a five-foot pipe fen...

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...