Approval and Promulgation of Air Quality Implementation Plans; State of Utah; Provo Attainment Demonstration of the Carbon Monoxide Standard, Redesignation to Attainment, Designation of Areas for Air Quality Planning Purposes, and Approval of Related Revisions

EPA is taking direct final action approving State Implementation Plan (SIP) revisions submitted by the State of Utah. On April 1, 2004, the Governor of Utah submitted an attainment demonstration and plan for the Provo metropolitan area (hereafter, Provo area) for the carbon monoxide (CO) National Ambient Air Quality Standard (NAAQS) to replace the demonstration and plan that were submitted by Governor Leavitt on July 11, 1994. The Governor's submittal also contained a request to redesignate the Provo area to attainment for the CO NAAQS and a maintenance plan which includes transportation conformity motor vehicle emission budgets (MVEB) for 2014 and 2015. The Governor also submitted revisions to: Utah's Rule R307-110-12, "Section IX, Control Measures for Area and Point Sources, Part C, Carbon Monoxide," which incorporates the attainment demonstration, plan, and maintenance plan; Utah's Rule R307-110-31, "Section X , Vehicle Inspection and Maintenance Program, Part A," which incorporates general requirements and applicability for motor vehicle emissions inspections; and Utah's Rule R307-110-34, "Section X, Vehicle Inspection and Maintenance Program, Part D, Utah County," which incorporates a revised vehicle inspection and maintenance program for Utah County. The Governor's April 1, 2004 submittal also stated that the prior July 11, 1994 submittal of Utah's Rule R307-1-4.12, "Emissions Standards for Residential Solid Fuel Burning Devices and Fireplaces" to restrict woodburning in Utah County, remains part of her April 1, 2004 submittal and requested that Utah's Rule R307-301, "Oxygenated Gasoline Program," be eliminated from the Federally- approved SIP. We note that on September 20, 1999, the Governor submitted Utah Rules R307-302-3 and -4, which together comprise a re-numbered and re- titled version of R307-1-4.12. The text of Rules R307-302-3 and -4 is identical to the text of Rule R307-1-4.12 that the Governor submitted on July 11, 1994. In this action, we are appro