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Advanced Biofuels Association v. Environmental Protection Agency

The D.C. Circuit upheld EPA's decision to modify the criteria or lower the threshold by which the Agency determined whether to grant small refineries an exemption from the CAA's Renewable Fuel Program. An industry group argued that the increase in the number of exemptions granted in 2016 and 2017 co...

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 control technology at a neighboring plant in Labadie, Missouri. ...

California v. Environmental Protection Agency

The D.C. Circuit upheld EPA's decision to reconsider greenhouse gas emission standards for model year 2022-2025 vehicles. States and environmental groups argued that EPA violated procedural and substantive requirements imposed by the CAA and that the decision was arbitrary and capricious. The Agency...