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...

The court holds that the U.S. Environmental Protection Agency (EPA) did not exceed its discretion under §111 of the Clean Air Act (CAA) in promulgating new source performance standards (NSPS) for nitrogen oxide (NOx) emissions from utility and industrial boilers. The court, therefore, denies an ene...

The court largely upholds a U.S. Environmental Protection Agency (EPA) rule mandating that 22 states and the District of Columbia revise their state implementation plans (SIPs) to mitigate ozone transport by reducing nitrogen oxides (NOx) through the use of cost-effective controls. The court first h...

The court upholds a district court decision ordering the upward adjustment of sentencing for three labor contractors who violated the Clean Air Act (CAA) and the Social Security Act in connection with asbestos abatement projects. The contractors recruited homeless men from a shelter in Tennessee to ...

The court holds that an aluminum manufacturer is not entitled to a share of pollution emissions allowances allocated to an electric power plant under the Clean Air Act (CAA). The manufacturer claimed that it was entitled to an 89% proportionate share of the plant's allowances because its contractual...

The court holds that environmental groups have standing to bring a Clean Air Act (CAA) action against a Texas oil refinery for violating hydrogen and sulfur dioxide emission standards and further holds that a state environmental agency's administrative action against the refinery for the same violat...

The court holds that the U.S. Environmental Protection Agency's (EPA's) regulations implementing Clean Air Act (CAA) amendments properly delegated to Native American nations authority to regulate air quality on all land within reservations, including fee land held by private landowners who are not t...

The court holds that U.S. Environmental Protection Agency (EPA) regulations limiting the content of volatile organic compounds (VOCs) in architectural coatings and paints under the Clean Air Act (CAA) are lawful. The court first holds that nothing in the CAA unambiguously requires EPA to analyze the...

The court upholds the U.S. Environmental Protection Agency's (EPA's) approval of the Nevada Clean Air Act (CAA) state implementation plan (SIP) revision that requires gasoline sold in the wintertime in Clark County, Nevada, which is a serious nonattainment area for carbon monoxide (CO), to contain a...

The court affirms the U.S. Environmental Protection Agency's (EPA's) disapproval of a revision to the Michigan Clean Air Act (CAA) state implementation plan (SIP) that automatically exempts from state review emissions violations resulting from the startup, shutdown, or malfunction (SSM) of the sourc...