Ameren Missouri, an operating company of Ameren Corporation  strongly disputed allegations that the company violated Clean Air Act requirements as claimed in a lawsuit filed Jan. 12 on behalf of the U.S. Environmental Protection Agency (USEPA). The USEPA's allegations are related to the New Source Review (NSR) provisions of the federal Clean Air Act. This lawsuit follows USEPA's January 2010 issuance of a Notice of Violation. Ameren Missouri is one of approximately 60 U.S. electric utilities to receive such a notice since the 1990s and one of many that have faced such a lawsuit.
