Long-running Ameren NSR case ends with $61 mitigation plan

A federal district judge has entered an order requiring Ameren Missouri to pay $61 million for mitigation relief to address the effects of illegal sulfur dioxide (SO2) emissions, finally ending a long-running new source review (NSR) enforcement case first brought by EPA in 2011. The Dec. 17 order in United States v. Ameren by Judge Rodney Sippel of the U.S. District Court for the Eastern District of Missouri requires the company to spend $25 million to provide vouchers for...