A district court held that the CAA does not preempt landowners' state common-law tort claims against a whiskey distillery for property damage. The landowners alleged that emissions from the…

The D.C. Circuit denied an electric utility association's petition for review challenging EPA's new source performance standards for steam generating units. The standards—issued via…

A district court dismissed an environmental group's CAA citizens suit against EPA for failing to make a finding that Idaho and Utah failed to timely submit SIPs for fine particulate matter (…

A district court granted in part and denied in part motions to dismiss an environmental group's citizen suit against a utility company for alleged CAA violations at a coal-fired power plant…

The Washington Supreme Court upheld the state environmental agency's determination that an EIS was not necessary for a proposed biomass cogeneration project at a kraft pulp and paper mill. An…

A district court rejected a group of mid-Atlantic states' claims that projects undertaken by an energy company at three of its coal-fired power plants in Pennsylvania violated the CAA's…

The Ninth Circuit refused to rehear a case in which it previously ruled that environmental groups lacked standing to compel the Washington State Department of Ecology and other regional agencies…

The D.C. Circuit denied a road building association's petition for review challenging EPA's CAA §209(e) regulations, which preempt certain state regulation of nonroad engines. In general…

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…

The D.C. Circuit vacated an EPA rule establishing nonconformance penalties (NCPs) for on-highway, heavy-duty diesel engines. NCPs are intended to protect "technological laggards" by…