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

The Environmental Protection Agency (EPA) proposes to grant full approval of Missouri's attainment demonstration State Implementation Plan (SIP) for the 2008 lead National Ambient Air Quality Standard (NAAQS) nonattainment of the Viburnum Trend area in portions of Iron, Dent and Reynolds Counties, Missouri, submitted on April 18, 2013. EPA believes that the SIP submitted by the State satisfies the applicable requirements of the Clean Air Act (CAA) identified in EPA's Final Rule published on October 15, 2008, and will bring the area into attainment of the 0.15 microgram per cubic meter (ug/m\3\) lead NAAQS in the Viburnum Trend, Missouri area. In this action, EPA also proposes approval of a revision to the Missouri SIP to incorporate an amendment to an existing Missouri statute to restrict lead emissions from specific sources. The amendment revises certain throughput and emissions limits applicable to the Doe Run Buick Resource Recycling Facility (BRRF) in the Viburnum Trend lead nonattainment area. Approval of this rule will ensure consistency between the state and Federally-approved rules, and ensure Federal enforceability of the revised state rule. This revision was submitted to EPA on October 30, 2009.