The court affirms a district court denial of summary judgment to a building industry association challenging the U.S. Fish and Wildlife Service's (FWS') listing of four species of fairy shrimp that live in vernal pools in California as endangered or threatened under the Endangered Species Act (ESA)....

The court remands the U.S. Environmental Protection Agency's (EPA's) hazardous air pollutant emission standards for hazardous waste combustors to the Agency because the standards fail to reflect the emissions achieved in practice by the best performing sources as required by the Clean Air Act (CAA)....

The court holds that the U.S. Department of the Interior's (DOI's) decision to withdraw a proposed rule recommending the flat-tailed horned lizard for protection under the Endangered Species Act (ESA) was arbitrary and capricious. The lizard was identified as a candidate for listing under the ESA in...

The court holds that Massachusetts' environmental superlien statute, which allows the commonwealth to place a priority lien on property after spending money assessing or cleaning up a polluted tract of land, evades the Bankruptcy Code's automatic stay provision. The case arose after Massachusetts so...

The court affirms a district court decision rejecting an environmental group's claims for attorney fees in connection with their lawsuit against the U.S. Department of the Interior (DOI) in which they sought the listing of the Arkansas River shiner as an endangered or threatened species under the En...

The court denies an environmental group's petition to review the U.S. Environmental Protection Agency's (EPA's) approval of Maryland's revised motor vehicle emissions budget (MVEB) for the Baltimore ozone nonattainment area. In 1999, EPA determined that the MVEB in the state's attainment demonstrati...

The court affirms in part and reverses in part a district court grant of summary judgment in favor of the Bureau of Land Management (BLM) in a suit brought by an individual who alleged that a BLM transfer of federal lands in Nevada violated the Clean Air Act (CAA) and the National Environmental Poli...

The court upholds the conviction of a fertilizer company owner who allowed hazardous waste to be disposed of without a permit while knowing that his actions placed others in imminent danger of death or serious bodily injury, but the court vacates a district court order requiring the owner to pay a $...

The court affirms a district court denial of an environmental group's motion for a preliminary injunction to stay the U.S. Department of the Navy's exercises on the island of Vieques near Puerto Rico. The group alleged that the Navy violated certain Endangered Species Act (ESA) §7 procedural requir...

The court affirms a February 2001, district court order requiring the U.S. Environmental Protection Agency (EPA) to make an air quality attainment status determination for the St. Louis, Missouri, area and to publish it in the Federal Register by March 20, 2001, and affirms a subsequent court order ...