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Permits

United States v. Ameren Missouri

A district court granted in part a motion to stay its previous order requiring an electric utility company to obtain a PSD permit to address CAA violations at its coal-fired power plant in Festus, Missouri, and to install air pollution...

United States v. Ameren Missouri

A district court ordered an electric utility company to obtain a PSD permit to address CAA violations at its coal-fired power plant in Festus, Missouri. EPA argued that the company increased the risk of negative health impacts and...

Sierra Club v. Oklahoma Gas & Electric Co.

The Tenth Circuit dismissed an environmental group's citizen suit against an Oklahoma power company for CAA violations at a power plant. The group claimed the company modified a coal-fired boiler without first obtaining an emission-...

Sierra Club de Puerto Rico v. Environmental Protection Agency

The D.C. Circuit dismissed environmental groups' lawsuit seeking to vacate an EPA rule that implements the CAA's new source review (NSR) permitting scheme in nonattainment areas. The groups filed suit after EPA issued an energy company...

Northwest Environmental Defense Center v. Cascade Kelly Holdings LLC

A district court dismissed environmental groups' CAA citizen suit against a crude oil transloading facility for constructing and operating the facility without a prevention of significant deterioration (PSD) permit. The groups allege...

United States v. Oklahoma Gas & Electric Co.

A district court dismissed EPA's lawsuit against an Oklahoma utility under the CAA alleging that it failed to properly project whether modifications made to two coal-fired power plants would result in an increase in emissions. The...

Sierra Club v. U.S. Environmental Protection Agency

The Ninth Circuit vacated and remanded EPA's decision to issue a PSD permit allowing a power company to build and operate a 600 megawatt natural gas-fired power plant. EPA missed the one-year statutory deadline to grant or deny the...

Utility Air Regulatory Group v. Environmental Protection Agency

The U.S. Supreme Court held that EPA's regulation of greenhouse gas (GHG) emissions from new motor vehicles did not automatically trigger the CAA's permitting requirements for stationary sources that emit GHGs. The Court, therefore,...

Sierra Club v. Oklahoma Gas & Electric Co.

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...

Sierra Club v. Moser

The Supreme Court of Kansas reversed and remanded the Kansas Department of Health and Environment's decision to issue a prevention of significant deterioration (PSD) permit to a power company to construct an 895-megawatt coal-fired...