Approval and Promulgation of Implementation Plans and Designation of Areas for Air Quality Planning Purposes; State of Wisconsin

On June 5, 1996, and June 11, 1996, the Environmental Protection Agency (EPA) published a proposal to approve the redesignations to attainment and associated maintenance plans for the ozone National Ambient Air Quality Standard (NAAQS) for the Wisconsin counties of Walworth, and Kewaunee, Manitowoc, and Sheboygan, respectively. The 30-day comment periods concluded on July 5, 1996, for Walworth County and on July 11, 1996 for the remaining three counties. Two comment letters were received in response to the proposed rulemakings, both from the Citizens Commission for Clean Air in the Lake Michigan Basin. This final rule summarizes all comments and EPA's responses, and finalizes the approval of the redesignations to attainment for ozone and associated maintenance plans for Walworth, Sheboygan, and Kewaunee Counties. Manitowoc County is not being finalized at this time due to a possible monitored exceedance of the ozone standard in that county. The monitored exceedance, as yet, has not been subject to the standard quality assurance procedures. If the exceedance is validated, it would be the fourth exceedance over the past three years and would therefore constitute a violation at the Manitowoc County Woodland Dunes monitor.