Approval and Promulgation of Air Quality Implementation Plans; Missouri; 2013 Missouri State Implementation Plan for the 2008 Lead Standard

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the State Implementation Plan (SIP) for the State of Missouri. This final action will approve Missouri's SIP for the Buick/Viburnum Trend lead National Ambient Air Quality Standard (NAAQS) nonattainment area near Boss, Missouri. EPA proposed approval of this plan on June 1, 2015. The applicable standard addressed in this action is the lead NAAQS promulgated by EPA in 2008. EPA believes Missouri's SIP satisfies the applicable requirements of the Clean Air Act (CAA) identified in EPA's 2008 Final Rule and will bring the area into attainment of the 0.15 micrograms per cubic meter (ug/m\3\) lead NAAQS in the Buick/Viburnum Trend, Missouri area. In this action, EPA is also finalizing its approval of a revision to the Missouri SIP to incorporate an amendment to an existing Missouri regulation to restrict lead emissions from specific sources. The amendment revises certain throughput and emissions limits applicable to the Buick Resource Recycling Facility (BRRF) in the Buick/Viburnum Trend lead nonattainment area. Approval of this rule ensures consistency between the state and Federally-approved rules, and ensures Federal enforceability of the revised state rule.