Associated Press | A massive coal-fired power plant in central Wisconsin must limit the visibility of pollutants leaving its main smokestack but does not need tighter controls for other emissions, an appeals court ruled Thursday. The plant is operated by Chicago-based Integrys Corp.

A three-judge panel of the District 4 Court of Appeals agreed with the Sierra Club that the state Department of Natural Resources erred when it did not require the smokestack for the plant’s main boiler to follow a federal visibility standard for pollutants on its air pollution permit.

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