Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes: Minnesota

Resumo

On June 22, 1993, the Minnesota Pollution Control Agency (MPCA) submitted a State Implementation Plan (SIP) revision and request for redesignation from nonattainment to attainment to the United States Environmental Protection Agency (USEPA). This submittal was in response to a designation to nonattainment, effective January 6, 1992, for an area in Dakota County, Minnesota. The MPCA submittal consisted of an administrative order for the Gopher Smelting and Refining Company, a secondary lead smelter located in Eagan, Minnesota. The submittal also contained technical support information in the form of air dispersion modeling an ambient air monitoring data. The proposed SIP revision and request for redesignation was submitted to satisfy the requirements of the Clean Air Act (CAA). A letter, identifying specific issues pertaining to the proposed SIP revision, was sent to the MPCA on April 8, 1994. In response to those issues, the MPCA amended the original administrative order and has submitted it to USEPA. In this action, USEPA is granting direct final approval of the SIP revision and redesignation requests.