Approval and Promulgation of Implementation Plans; States of Arizona and Nevada; Interstate Transport of Pollution

EPA is taking direct final action to approve state implementation plans submitted by the States of Arizona and Nevada that address interstate transport with respect to the 8-hour ozone and fine particulate matter national ambient air quality standards. In so doing, EPA has determined that the plans submitted by Arizona and Nevada and approved herein satisfy requirements under Clean Air Act section 110(a)(2)(D)(i) for each State to submit a plan containing adequate provisions to prohibit interstate transport with respect to the standards for 8-hour ozone and fine particulate matter. EPA is taking this action pursuant to those provisions of the Clean Air Act that obligate the Agency to take action on submittals of state implementation plans. The effect of this action is to approve the Arizona and Nevada state implementation plans addressing interstate transport with respect to the 8-hour ozone and fine particulate standards and to eliminate obligations on the Agency to promulgate Federal implementation plans for these States addressing this same requirement.