The D.C. Circuit vacated EPA's new source review (NSR) rule for Indian country, which established a federal implementation plan (FIP) covering all Indian country nationwide except where EPA had already approved a tribal NSR program or expressly authorized a SIP to be enforced.

The Ninth Circuit held that the Bureau of Ocean Energy Management's (BOEM's) EIS analyzing the environmental effects of proposed oil and gas development leases in the Chukchi Sea of the northwest coast of Alaska violated NEPA.

A Wisconsin appellate court held that insurance companies have no duty to defend a septic pumping service in an underlying case concerning well water contamination. Dairy farmers filed suit against the service for alleged well water contamination.

A district court denied environmental groups' motions for a temporary restraining order and preliminary injunction to halt the Idaho Department of Fish and Game's wolf trapping and hunting program in the Frank Church-River of No Return Wilderness area.

A district court held that the National Marine Fisheries Service (NMFS) violated NEPA and the ESA in approving certain operations at a fish hatchery on Oregon's Sandy River.

The D.C. Circuit denied petitions for review challenging FAA's determination that a proposed offshore wind farm in Nantucket Sound would not pose a hazard to air navigation.