The D.C. Circuit denied the state of Utah's motion to stay EPA's 2023 "good neighbor" rule, which aims to ensure that 23 states meet the CAA's good neighbor requirements by reducing ozone-forming emissions of nitrogen oxides from power plants and industrial facilities that contribute to compliance i...

A district court granted summary judgment for several bus companies in a CAA citizen suit alleging that the companies excessively idled their buses in violation of Massachusetts and Connecticut law. The companies moved for summary judgment, asserting the group lacked standing. The court found the co...

A district court granted the state of Louisiana's and oil and gas companies' motions to preliminarily enjoin the Bureau of Ocean Energy Management's (BOEM's) withdrawal of six million acres from, and addition of a term to, an oil and gas lease sale on the outer continental shelf in the Gulf of Mexic...

The Tenth Circuit, 2-1, granted in part an environmental group's challenge to EPA's approval of a Colorado SIP revision certifying that the state's existing, EPA-approved nonattainment new source review permitting program for the Denver Metro-North Front Range area met the requirements for attaining...

A district court dismissed a mining company's challenge to DOI's cancellation of two leases for a proposed copper and nickel mine in Superior National Forest. The company argued the cancellation violated the company's right to successive lease renewals and to be free from government action that is a...

The Ninth Circuit affirmed a district court's denial of a preliminary injunction to halt two projects to thin vegetation in Yosemite National Park in preparation for controlled burns. An environmental group had argued NPS violated NEPA by approving the projects without conducting a full review of th...

The Tenth Circuit affirmed denial of a preliminary injunction in a challenge to the Office of Natural Resources Revenue's (ONRR's) 2016 rule changing how royalties were calculated for oil and natural gas produced on federal land. A trade group argued the rule was arbitrary and capricious, in violati...

A district court granted in part and denied in part environmental groups' motion for summary judgment in a challenge to the Forest Service's and FWS' approval of a logging project in Kootenai National Forest. The groups argued, among other things, that the Services failed to take a "hard look" at th...

The D.C. Circuit granted in part and denied in part petitions to review a Surface Transportation Board order authorizing construction and operation of a new rail line in the Uinta Basin. Environmental groups and a Colorado county argued the Board failed to take a "hard look" at environmental impacts...

A district court granted in part and denied in part environmental groups' motion for summary judgment in a challenge to BLM's 2020 decision to allow grazing in the Sonoran Desert National Monument. The groups argued the Bureau's amended resource management plan (RMP) violated FLPMA and the National ...