On April 1, Dominion Energy Inc. reached an agreement with the Environmental Protection Agency (EPA) following a 2008 investigation of permitting violations under the Clean Air Act. The settlement includes the closing of a plant in Indiana and the installation of $325 million worth of pollution control technology at plants in Illinois and Massachusetts. In addition, Dominion agreed to pay $9.75 million in environmental mitigation projects and $3.4 million as a civil penalty.