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Analysis: Ameren’s Petition for Reconsideration, Eric L. Hiser

In this installment and the following one, we will examine the United States v. Ameren Missouri litigation over whether Ameren’s installation of replacement preheaters at its Rush Island power station Units 1 and 2 constituted a “major modification” requiring PSD review. It is unusual for PSD cases to go to trial or appeal. The petition for rehearing of the panel decision thus provides an opportunity to evaluate both Ameren’s and the government’s position on several PSD ...Read More










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