The Environmental Protection Agency (EPA) is taking final action to approve two revisions to the Nevada state implementation plan. The first revision provides a demonstration of implementation of best available control measures (BACM) for control of particulate matter with an aerodynamic diameter less than or equal to a nominal ten micrometers (PM<INF>10</INF>) within Truckee Meadows. The second revision is a plan that provides for the maintenance of the national ambient air quality standard (NAAQS or "standard") for PM<INF>10</INF> in Truckee Meadows through 2030, includes an emissions inventory consistent with attainment, and establishes motor vehicle emissions budgets. In connection with these approvals, the EPA is taking final action to determine that major stationary sources of PM<INF>10</INF> precursors do not contribute significantly to elevated PM<INF>10</INF> levels in the area. Also, based in part on the approvals of the BACM demonstration and maintenance plan and determination regarding PM<INF>10</INF> precursors, the EPA is taking final action to approve the State of Nevada's request for redesignation of the Truckee Meadows nonattainment area to attainment for the PM<INF>10</INF> standard. Lastly, the EPA is taking final action to delete the area designation for Truckee Meadows for the revoked standard for total suspended particulate (TSP). The EPA is taking these actions because the SIP revisions meet the applicable statutory and regulatory requirements for such plans and related motor vehicle emissions budgets and because the area meets the Clean Air Act requirements for redesignation of nonattainment areas to attainment.