A district court granted environmental groups' motion to lift a stay of a suit challenging NMFS' biological opinion (BiOp) concerning oil and gas activity in the Gulf of Mexico. The groups initially argued NMFS issued a flawed BiOp that underestimated the risks of harm to protected species and took ...

The Fifth Circuit granted several states' petition to review DOE's 2022 rule repealing two 2020 rules concerning efficiency standards for dishwashers and washing machines. The states argued the repeal rule, which deleted the appliance categories for shorter-duration dishwashers and washing machines ...

The Fifth Circuit, 2-1, denied petitions to review EPA's 2016 designation of two counties in Texas as nonattainment for the 2010 sulfur dioxide NAAQS. The state of Texas and the owner of a power plant located in one of the counties sought to have the designation vacated, arguing it violated the CAA ...

The Fourth Circuit, 2-1, granted West Virginia's motion to stay EPA's disapproval of its SIP addressing "good neighbor" obligations under the revised 2015 air quality standards for ozone. EPA's disapproval found the state would still contribute significantly to nonattainment or interfere with mainte...

A district court on remand ordered that a commercial wind farm constructed on Osage Nation land be removed in a challenge brought against the farm's developers. The federal government argued the developers engaged in unauthorized mining and excavation in the Osage mineral estate without first obtain...

A district court granted in part summary judgment for environmental groups in a challenge to a National Park Service (NPS) agreement with Miami-Dade County to facilitate development of a waterpark, hotel, and retail area near the Miami Zoo. The groups argued NPS violated NEPA and the ESA by failing ...

The Ninth Circuit reversed summary judgment for FWS in a challenge to its biological opinion (BiOp) concerning water pumping impacts on ESA-protected species in Arizona's San Pedro River Basin. An environmental group argued the BiOp, which concluded that a conservation easement proposed to compensat...

The Third Circuit denied three petitions for review in a long-running dispute over whether and to what extent state-subsidized energy resources should be subject to price mitigation in interstate capacity auctions. Energy generators and state public utilities commissions challenged FERC's acceptance...

A district court granted in part and denied in part environmental groups' motion to preliminarily enjoin the state of Montana's wolf trapping and snaring season as authorized by recently approved regulations. The groups argued the regulations, which expanded both the length of the season and the geo...

A district court granted FWS' motion for partial voluntary remand in a challenge to its decision to list the eastern black rail as threatened instead of endangered. Environmental groups argued FWS' decision, and related determination that designation of critical habitat for the rail was "not prudent...