Approval and Promulgation of Implementation Plans; Nevada-Las Vegas Valley PM-10 Nonattainment Area; Serious Area Plan for Attainment of the Annual and 24-Hour PM-10 Standards

EPA is approving the serious area particulate matter (PM-10) plan for the Las Vegas Planning Area that addresses attainment of the annual and 24-hour PM-10 national ambient air quality standards (NAAQS) and includes motor vehicle emissions budgets for transportation conformity. We are also granting Nevada's request to extend the Clean Air Act (CAA or Act) deadline for attaining the 24-hour PM-10 standard in the Las Vegas area from 2001 to 2006. Finally, we are approving into the State Implementation Plan (SIP) fugitive dust rules adopted by Clark County (County).