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DANE COUNTY DEPARTMENT OF PLANNING AND DEVELOPMENT SUPPLEMENTARY STAFF REPORT CUP# 1509 (Yahara Materials,Inc.) Public Hearing Date: 7/28/98 Date of This Report: 8/5/98 I. ANALYSIS Yahara Materials, Inc. has submitted a revised operations plan, dated 7/28/98, that adequately addresses the issues raised in the previous staff report. Some of the changes include: • the first 100 feet of the proposed driveway will be paved to reduce dust and mud; • no water(other than for spraying as necessary to control dust) will be used on the site; • no operations will take place within 300 feet of the intermittent stream; • provisions for safety fencing and appropriate signage along the open perimeter of the site; • only portable,mobile equipment will be used for crushing and screening of limestone, and; • no on-site bulk fuel storage will take place. In addition, Yahara Materials has received an approved erosion control plan from the Land Conservation Department for the site. Land Conservation staff have reported that unless elevations and design standards contained within the erosion control plan are followed precisely, severe sedimentation of the nearby stream could result. The Land Conservation Department has recommended that an engineer verify that constructed erosion controls meet plan specifications before quarrying is allowed to begin. II. SUGGESTED CONDITIONS OF APPROVAL The committee may wish to consider approving the permit with the following conditions. These conditions are essentially similar to the those imposed on the nearby Skaar Scattered Acres site. Mr. Burcalow has indicated to staff that the wording of these conditions is acceptable. 1. The applicant shall comply with all conditions and best management practices required in the erosion control plan approved by the Land Conservation Department for the site. Any erosion control structures shall be maintained according to a schedule approved by the Land Conservation Department. 2. Prior to commencement of extraction operations,the applicant shall submit a report signed by a licensed, qualified professional engineer to the Zoning Administrator. This report shall certify that all constructed basins,trenches,retention berms and other erosion control measures match the elevations and design standards specified in the erosion control plan. 3. The applicant shall apply for,receive and maintain all other required local, state and federal permits. 1