The city of Menasha has entered into a consent decree with the Sierra Club and several government agencies regarding its operation of the River Street Power Plant.
The plant was voluntarily closed in October 2009 because of the air pollution.
The federal Environmental Protection Agency and the Wisconsin Department of Natural Resources joined the Sierra Club in the federal lawsuit also filed in 2009.
The consent decree establishes the legal standards for the operation of the plant if Menasha chooses to reopen it.