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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, vacated portions of the Agency's "tailoring" rule mandating PSD per...

Sierra Club v. FutureGen Industrial Alliance

A district court dismissed an environmental group's citizen suit in which it alleged a power company was attempting to construct a major modification of its coal-fired power plant in Illinois without a PSD permit in violation of the CAA. The project will physically replace an existing boiler with a ...