The Ninth Circuit granted in part and denied in part petitions to review EPA's 2019 amended registration of the pesticide sulfoxaflor. Environmental groups alleged that the registration, which unconditionally approved new uses of sulfoxaflor requested by the company that created the pesticide, viola...

A district court granted in part and denied in part a pipeline owner's motion for summary judgment in a CERCLA suit brought by the owner of land where the pipeline is located in West Virginia. The landowner alleged that the pipeline leaked and contaminated her soil and groundwater, and sought to rec...

A district court granted in part and denied in part an animal sanctuary's motion to dismiss an ESA citizen suit brought by an animal rights group. The group alleged the sanctuary violated the ESA by taking endangered or threatened species, unlawfully possessing ESA-protected animals, and unlawfully ...

A district court granted a federal contractor's motion for partial summary judgment in a CERCLA liability suit brought by the state of New Mexico and a Native American reservation concerning Gold King Mine's release of millions of gallons of contaminated water into nearby rivers in 2015. The contrac...

The D.C. Circuit granted environmental groups' motion for writ of mandamus to require EPA to complete its effects determination for the registered pesticide cyantraniliproles. The groups argued EPA was eight years past its deadline under the ESA to complete the effects determination, that it had fai...

A district court granted in part and denied in part conservation groups' motion for an order on remedy after it invalidated NMFS' 2021 biological opinion (BiOp) and final rule as related to the U.S. lobster fishery. The parties agreed the rule should be remanded without vacatur to NMFS along with an...

A district court granted DOD's motion to dismiss a challenge to its decision to halt fence construction along the U.S.-Mexico border in response to President Biden's proclamation declaring an end to the national border emergency. A corporation that owns land adjacent to the fence argued that DOD's d...

In an amended order, a district court granted FWS' and NMFS' motion to voluntarily remand a series of regulations enacted by the Trump Administration that modified how the Services implement the ESA. Environmental groups, states, and cities had argued the regulations violated the ESA, the APA, and N...

In an unpublished opinion, the Ninth Circuit affirmed summary judgment for the U.S. government in a CERCLA liability lawsuit, requiring oil companies to reimburse approximately $50 million of EPA's environmental cleanup costs at a Superfund site in California. The government had sought reimbursement...