On November 16, 2016, the Maryland Department of the Environment filed a petition with EPA requesting that it force 36 coal-fired units in Ohio and neighboring states to take measures to reduce emissions alleged to have increased ozone concentrations on the East Coast. The Ohio facilities targeted by the petition are Killen Station, the Kyger Creek Generating Station and the W.H. Zimmer Generating Station. The petition also included generating facilities in Indiana, Kentucky, Pennsylvania and West Virginia. Pursuant to Section 126 of the Clean Air Act, states may petition EPA to find that specific sources of air pollution in other states are significantly contributing to non-attainment or interfering with maintenance of federal air quality standards in the petitioning state. The petition requests that EPA mandate that the named facilities use all installed control technology for every day during the ozone season starting on May 1, 2017. EPA has 60 days to respond to the petition.