The Environmental Protection Agency (EPA) is taking direct final action to approve a State Implementation Plan (SIP) revision submitted by the State of Nevada. On July 3, 2008, the EPA redesignated the Truckee Meadows area, consisting largely of the cities of Reno and Sparks in Washoe County, Nevada, from nonattainment to attainment for the carbon monoxide (CO) National Ambient Air Quality Standards (NAAQS) and approved the State's plan addressing the area's maintenance of the NAAQS for ten years. On November 7, 2014, the State of Nevada submitted to the EPA a second maintenance plan for the Truckee Meadows area that addressed maintenance of the NAAQS through 2030. The EPA is now approving this second maintenance plan. The EPA is also finding adequate and approving transportation conformity motor vehicle emissions budgets (MVEBs) for the years 2015, 2020, 2025 and 2030. We are taking these actions under the Clean Air Act (CAA or "the Act").