EPA is taking direct final action to approve a revision to the Washoe County portion of the Nevada State Implementation Plan. Submitted by the State of Nevada on May 30, 2007, this plan revision consists of a maintenance plan prepared for the purpose of providing for continued attainment of the 8-hour ozone standard in Washoe County through the year 2014 and thereby satisfying the related requirements under section 110(a)(1) of the Clean Air Act and EPA's phase 1 rule implementing the 8-hour ozone national ambient air quality standard. EPA is taking this action pursuant to those provisions of the Clean Air Act that obligate the Agency to take action on submittals of state implementation plans and plan revisions.