A district court denied partial summary judgment in a challenge to a county board's decision not to renew two conditional use permits (CUPs) for continued operation of an oil extraction and production facility in Livermore, California. The facility operator argued it had a fundamental vested right i...

The Ninth Circuit affirmed in part and reversed in part a district court's dismissal of a suit challenging an automobile company's use of diesel-cheat devices to evade compliance with federally mandated emission standards. Two counties argued the company's installation of and modification to the dev...

The Fifth Circuit upheld EPA's decision to reject a challenge to a CAA Title V permit it issued for expansion of a plant in Baytown, Texas. Environmental groups requested that EPA reject the permit on the grounds that the underlying Title I preconstruction permit allowing the expansion was invalid. ...

The First Circuit vacated an air permit issued by the Massachusetts Department of Environmental Protection (MDEP) for a proposed natural gas compressor station that is part of a natural gas pipeline connecting the northeastern U.S. and Canada. Nearby municipalities and citizens argued that MDEP impr...

A district court denied a request to vacate the Trump Administration's decision to lift the Obama Administration's moratorium on new coal leasing on public lands. Environmental groups, tribes, and states argued that BLM's issuance of a final EA and FONSI were insufficient to meet the court's previou...

A district court granted summary judgment for the U.S. Army Corps of Engineers in a challenge to its proposal to dredge a portion of a harbor located in the Lower St. Johns River. An environmental group argued that the Corps violated NEPA by failing to analyze the present effects of past dredging ac...

A district court granted summary judgment for the U.S. Forest Service in a challenge to its approval of a tree-thinning and fire mitigation project in the Los Padres National Forest. Conservation groups and nearby residents argued the Service's decision to authorize the project with a categorical ex...