Stay of Effectiveness of Control Measure Regulating Dust Emissions at the Four Corners Power Plant; Navajo Nation

EPA is taking final action to stay the effectiveness of a control measure regulating dust emissions from certain operations that we promulgated in our Federal Implementation Plan for the Four Corners Power Plant located on the Navajo Nation. The control measure would take effect on November 5, 2008. On October 1, 2007, Arizona Public Service Company filed a Petition for Review claiming, inter alia, that EPA had not provided an adequate explanation for promulgating the control measure. In the litigation, EPA has agreed that the control measure should be remanded and vacated. EPA needs to complete this action staying the effectiveness of the control measure until the Court rules on the Petition, including the Petitioner's and EPA's requests to remand and vacate the control measure.