Rush Island

The utility company was found in violation of the Clean Air Act for failing to install pollution controls when it updated the Rush Island Energy Center.

The Environmental Protection Agency estimates Rush Island released 275,000 tons of sulfur dioxide after it was updated without required pollution controls in 2007 and 2010.

The company was given a choice by a federal court to either shut down the Rush Island Energy Center or add expensive pollution controls.

Story updated Feb. 17 with comment from Ameren Missouri — A federal judge has approved the Sierra Club's request to intervene in a Clean Air Act lawsuit…

A U.S. district court judge has ruled that Ameren Missouri violated the Clean Air Act when it made upgrades to its Rush Island Power Plant in Festus in…

Updated Aug. 22 with details from the trial — An Environmental Protection Agency lawsuit alleging that Ameren Missouri violated the Clean Air Act goes to…

Updated Thursday 10:15 p.m.The Sierra Club says Ameren has been routinely violating air quality standards at its St. Louis-area power plants.In a Notice…

The Environmental Protection Agency is holding a public hearing Thursday evening about a proposed agreement to address water pollution from the illegal…

Environmental groups are once again urging state officials to require groundwater monitoring at Ameren’s coal-fired power plants in eastern Missouri.The…

Updated at 3:15 p.m. on Aug. 8, 2012:The Missouri Department of Natural Resources will hold another public awareness session Aug. 14. This one will focus…