Approval and Promulgation of Implementation Plans; State of Missouri; Designation of Areas for Air Quality Planning Purposes; Dent Township

Résumé

EPA proposes to approve a State Implementation Plan (SIP) revision submitted by the state of Missouri and Missouri's request to redesignate the lead nonattainment area in western Iron County, Missouri, to attainment of the National Ambient Air Quality Standards (NAAQS). EPA proposes to approve the maintenance plan for this area including a consent order which was submitted with the redesignation request, and also proposes to approve the revision to Missouri's Restriction of Emissions of Lead From Specific Lead Smelter-Refinery Installations rule which ensures the permanent and enforceable emission reductions by clarifying the emissions limits for the Doe Run Resource Recycling Facility, and removes the text which could have allowed this facility to resume operation as a primary smelter. In the final rules section of today's Federal Register, EPA is approving the state's SIP revision and redesignation request as a direct final rule without prior proposal because the Agency views this as a noncontroversial action and anticipates no relevant adverse comments to this action. A detailed rationale for the approval is set forth in the direct final rule. If no relevant adverse comments are