A district court granted five states' motion to preliminarily enjoin BLM from implementing its 2024 rule that requires oil and gas operators to flare rather than vent excess methane gas to prevent waste and conserve resources. North Dakota, Montana, Texas, Wyoming, and Utah argued the rule exceeded ...

A district court granted in part environmental groups' motion for summary judgment in a challenge to BLM's approval of an oil and gas project in Wyoming. The groups argued BLM violated NEPA, the APA, FLPMA, and the Mineral Leasing Act in approving the project and in approving hundred of applications...

A district court denied summary judgment for environmental groups in a challenge to FWS' 2015 rule that classified any reestablished black-footed ferret population in Wyoming as a nonessential experimental population. The groups argued FWS' designation of reintroduced ferrets as "nonessential" viola...

A district court denied an environmental and public health group's motion for a preliminary injunction in a challenge to FWS' and the Federal Highway Administration's (FHwA's) authorization of a trail development project through a former nuclear weapons production site in Rocky Flats National Wildli...

A district court largely upheld BLM's approval of a proposed dolomite mining project near the Florida Mountains in New Mexico. Environmental groups challenged the approval, arguing BLM violated NEPA by failing to adequately consider adverse effects on water, air, wildlife, a wilderness study area, a...

A district court granted the state of Louisiana's motion to permanently enjoin EPA from (1) enforcing disparate impact requirements under Title VI of the Civil Rights Act against any entity of the state, or requiring compliance with those requirements as a condition of financial assistance; and (2) ...

A district court granted an Indian tribe's motion for a temporary restraining order (TRO) in a challenge to BLM's approval of a lithium mine exploration project in Arizona. The tribe argued BLM violated the National Historic Preservation Act (NHPA) when it found that no historical properties were af...

The D.C. Circuit denied environmental groups' petitions to review NRC's denial of their requests to intervene in licensing proceedings for construction and operation of a spent nuclear fuel storage facility in New Mexico. An energy company had applied for a license to construct and operate the facil...

In a per curiam opinion, the D.C. Circuit granted industry groups' petitions and denied environmental groups' petition to review EPA's application of a 2022 rule that classified industrial boilers built after 2010 as "new" rather than "existing" sources of hazardous air pollutants. The industry grou...

A district court affirmed BLM's resource management plan (RMP) amendment and record of decision (ROD) concerning wild horse management in southern Wyoming. Conservation and wild horse advocate groups argued BLM's decision to revert two herd management areas to "herd area" status, of which the approp...