A district court dismissed an individual's CAA lawsuit against a Colorado utility and the state's environmental agency in which he alleged that toxic fumes were emitted into his…

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…

A district court held that EPA has no mandatory or nondiscretionary duty to make a determination as to whether lead emissions from general aviation aircraft engines using aviation gasoline…

A district court denied a company's motion to dismiss an environmental group's CAA citizen suit against it for building seven compressor stations without first obtaining a nonattainment…

The Sixth Circuit held that the CAA's citizen suit provision does not allow an environmental group to file suit to compel the state of Ohio to administer a particular federal CAA regulation…

The D.C. Circuit upheld the dismissal of a CAA citizen suit challenging EPA's failure to take action to prevent the construction of three proposed pollution-emitting facilities in Kentucky…

The Ninth Circuit reversed a lower court decision denying the award of attorney fees to an environmental group in their lawsuit against a town for discharging toxic pollutants into a bay in…

The Fourth Circuit upheld a lower court's fee award in favor of environmental groups in their CAA case against an energy company. Below, the groups moved for summary judgment on the basis…

The court holds that the Secretary of the Pennsylvania Department of Transportation and the Secretary of the Pennsylvania Department of Environmental Protection violated the Clean Air Act (CAA) by…

The court dismisses an environmental group's Clean Air Act (CAA) citizen suit alleging that two Tennessee Valley Authority (TVA) plants exceeded Tennessee's state implementation plan (…