Interstate Air Pollution Rule Updates Get Their Day in Court

The Case: The U.S. Court of Appeals for the District of Columbia Circuit will hear arguments Oct. 3 in Wisconsin v. EPA. The case focuses on the Environmental Protection Agency’s 2016 update to the Cross-State Air Pollution Rule, a nitrogen oxides emissions trading program to help 22 eastern states meet federal ozone standards.

Who’s Involved: Wisconsin led Alabama, Arkansas, Ohio, and Wyoming in the lawsuit, which is backed by various national and regional electricity generating companies and groups, including AEP Generation Resources Inc., Duke Energy Carolinas LLC, and the Utility Air Regulatory ...