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The Clean Air Act requires the U.S. Environmental Protection Agency (EPA) to regulate emissions of hazardous air pollutants (HAPs) from electric generating units, which include mercury, particulate metals and acid gases. The MATS rule took effect in April 2015 and required affected facilities to install maximum achievable control technology for reducing HAPs.
There are two outstanding legal actions with respect to the final rule currently before the U.S. Court of Appeals for the District of Columbia Circuit. The court’s schedule calls for all briefing in the two actions to be completed by March 2017. During the period of pending court actions, the MATS rule is in effect.
All of Great River Energy’s affected facilities are in compliance with the MATS rule, due in part to early efforts to reduce HAPs emissions through the DryFiningTM installation at Coal Creek Station and extensive mercury reduction research.
June 12, 2017