The Ninth Circuit vacated the Bureau of Ocean Energy Management’s (BOEM’s) approval of an offshore drilling and production facility in the Beaufort Sea. Environmental groups argued that BOEM violated NEPA by arbitrarily and capriciously estimating the environmental consequences of the alternativ...

The Fifth Circuit, 2-1, affirmed in part and reversed in part a ruling enjoining the Trump Administration from using military funds to build portions of a border wall along the U.S.-Mexico border. El Paso County and a nonprofit group argued that the president's proposed plan for funding border barri...

The U.S. Supreme Court denied, 8-0, Texas' motion to review a river master's final determination in a long-running dispute over how Texas and New Mexico share water. Texas challenged the river master's determination that New Mexico was entitled to delivery credit for water that evaporated while it w...

A district court granted in part and denied in part environmental groups' motion for summary judgment in a challenge to the Army Corps of Engineers' approval of permits for a methanol plant in southwestern Washington. The groups argued that the Corps' EA was insufficient, that the agency should have...

A district court denied a motion to vacate three oil and gas leases issued by BLM in southeastern New Mexico. An environmental group argued BLM violated NEPA by failing to take a "hard look" at the environmental impacts of the leases and failing to sufficiently justify its decision not to prepare an...

The Ninth Circuit reversed a lower court ruling that the California Department of Transportation failed to adequately consider the environmental impacts of a proposed highway improvement project in a state park. Residents and environmental groups challenged the project on a variety of grounds, inclu...

The Eighth Circuit affirmed, 2-1, a ruling in favor of a mining company in a challenge to the company's failure to obtain a CAA construction permit for a mine in rural North Dakota. The owners of an adjacent ranch argued that the company failed to obtain the proper permit under the CAA and failed to...

The Fourth Circuit stayed a pipeline company's use of a nationwide permit, verified by the Army Corps of Engineers, to carry out construction of the Mountain Valley Pipeline in streams and rivers along the pipeline's route. Environmental groups argued the verification was unlawful because the Corps ...

The Montana Supreme Court affirmed vacatur of a Montana Pollutant Discharge Elimination System (MPDES) permit issued by the Montana Department of Environmental Quality (MDEQ) for a copper and silver mine in the Cabinet Mountains. Environmental groups argued, among other things, that MDEQ unlawfully ...

A district court denied a motion to dismiss a challenge to the West Virginia Department of Environmental Protection's failure to notify the Office of Surface Mining Reclamation and Enforcement (OSMRE) of a significant change to the state's special reclamation fund. Environmental groups argued that t...