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 in Muskogee, Oklahoma. The group alleged that the company failed to obtain a prevention of significant deterio...

Massachusetts' highest court upheld the state's "priority habitat" regulations insofar as they allow the Massachusetts Division of Fisheries and Wildlife to designate priority habitat without affording landowners the procedural protections statutorily due to those owning property within "significant...

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 prevention of significant deterioration and new source performance standards requirements. The states sought an in...