The court holds that the U.S. Environmental Protection Agency's (EPA's) construction of the Clean Air Act (CAA) in promulgating the revised national ambient air quality standards (NAAQS) for ozone and particulate matter (PM) effects an unconstitutional delegation of legislative power and remands the...

The court denies a petition to review the Bonneville Power Administration's (BPA's) record of decision (ROD) regarding the operations of the Federal Columbia River Power System (FCRPS). The National Marine Fisheries Service (NMFS) concluded that under the Endangered Species Act (ESA), continued oper...

The court holds that the U.S. Department of Transportation's (DOT's) approval of a 12-lane bridge to replace an existing 6-lane bridge in Alexandria, Virginia, violated the Clean Air Act (CAA), the National Environmental Policy Act (NEPA), the National Historic Preservation Act (NHPA), and the Depar...

The court holds that a prevailing logging company was not entitled to attorney fees in a lawsuit brought by an environmental group under the Endangered Species Act (ESA). The court first holds that it will only allow attorney fees to a prevailing defendant if the plaintiff's action was frivolous. Th...

The court holds that the U.S. Environmental Protection Agency's (EPA's) Acid Deposition Standard Feasibility Study Report to Congress complied with the Clean Air Act's (CAA's) mandate that it include a description of the nature and numerical value of deposition standards that would be sufficient to ...

The court holds that an automobile manufacturers association is entitled to attorney fees in connection with an underlying action in which New York's zero emission vehicle sales requirement for model years 1998-2002 was held preempted under Clean Air Act (CAA) §209. The court first holds that the a...

The court holds that it has subject matter jurisdiction over an environmental group's Clean Air Act (CAA) citizen suit that alleged emission and reporting violations at a refinery. The court first holds that under CAA §304, the group provided the refinery with adequate notice of the violation befor...

The court denies in part and grants in part the U.S. Environmental Protection Agency's (EPA's) petition for rehearing of a decision holding that EPA's revised national ambient air quality standards (NAAQS) for ozone were not based on intelligible principles in the Clean Air Act (CAA) for setting suc...

The court grants automakers' motion to stay their challenge to Massachusetts' zero emission vehicle standards pending the automakers' appeal of a U.S. Environmental Protection Agency (EPA) ruling in the Court of Appeals for the D.C. Circuit. In an earlier decision, in which the automakers claim that...