A district court granted in part and denied in part summary judgment in environmental groups' challenge to BLM's approval of land management plans designating route networks for off-highway vehicles (OHVs) in the western Mojave Desert. The groups argued the 2019 OHV route network violated FLPMA, NEP...

A district court denied the Florida Department of Environmental Protection's (FDEP's) motion to dismiss a lawsuit concerning its alleged failure to appropriately regulate sewage discharge into a northern part of the Indian River Lagoon. A nonprofit group argued FDEP's insufficient regulation led to ...

A district court denied industry groups' motion for summary judgment in a challenge to California's adoption of an emissions regulation for railroads operating within the state. The groups argued that the regulation, which would require companies to phase out locomotives that are more than 23 years ...

A district court granted the state of Alaska's request to set aside and enjoin NMFS' final rules designating critical habitat for the Beringia distinct population segment of the bearded seal and for the Arctic ringed seal. The state argued NMFS violated the ESA by failing to designate specific areas...

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 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...

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...

A district court granted summary judgment for environmental groups in a challenge to NMFS' biological opinion (BiOp) on the impact of oil and gas extraction in the Gulf of Mexico on protected marine life. The groups argued NMFS violated the APA and the ESA by issuing a flawed BiOp that underestimate...

In an unpublished opinion, the Ninth Circuit reversed a lower court's vacatur of an incidental take statement (ITS) issued by NMFS authorizing a troll fishery in Alaska to harvest Chinook salmon despite potential reduction in prey for the endangered southern resident killer whale, and affirmed its d...