Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; Arizona; Redesignation of Phoenix to Attainment for the 1-Hour Ozone Standard

EPA is approving the Arizona Department of Environmental Quality's submittals of revisions to the Arizona state implementation plan that include substitution of the clean fuel fleet program requirement with the cleaner burning gasoline program, adoption of the 1-hour serious area ozone plan and adoption of the 1-hour ozone maintenance plan for the Phoenix metropolitan 1-hour ozone nonattainment area. We are also approving Arizona's request to redesignate the Phoenix metropolitan 1-hour ozone nonattainment area from nonattainment to attainment. EPA is taking these actions pursuant to those provisions of the Clean Air Act that obligate the agency to take action on submittals of revisions to state implementation plans and requests for redesignation.