Approval and Promulgation of State Implementation Plans and Designation of Areas for Air Quality Planning Purposes; California-Coachella Valley

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EPA is proposing to approve state implementation plan (SIP) revisions submitted by the State of California to provide for attainment of the particulate matter (PM-10) national ambient air quality standard (NAAQS) in the Coachella Valley area and to establish emissions budgets for purposes of transportation conformity. EPA is also proposing to grant the State's request for an extension of the PM- 10 attainment deadline to December 31, 2006. EPA is proposing to approve the SIP revisions under provisions of the Clean Air Act (CAA) regarding EPA action on SIP submittals, SIPs for national primary and secondary ambient air quality standards, and plan requirements for nonattainment areas.