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COMPOSITE REPORT -Page 2 Application No. CUP 1498 DANE COUNTY PLANNING DIVISION STAFF COMMENTS I. BACKGROUND A. The applicant is requesting a conditional use permit to allow the operation of a temporary concrete batch plantlin the A-1 Exclusive Agriculture District. The plant is intended to supply materials to the USH 12-18 reconstruction project this year. B. The subject property is in the Town of Cottage Grove, northwest of the intersection of CTH N and USH 12-18. The property is not within an urban service area. C. The plant would be located within a 57 acre mineral extraction site approved in February 1998 (CUP 1476). That site was primarily proposed to supply gravel and fill to the adjacent highway reconstruction project, but may be open as long as 2002. That CUP approval was subject to a bumber of other conditions, listed in Exhibit A. II. ANALYSIS A. The subject property has been in cropland use, but is being converted to an extraction site. There are 8 to 10 homes ii the area, and the Rolling Wheels and Skyhigh subdivisions are located appro,imately 1/2 mile north. B. The applicant has been subcontracted to perform concrete paving operations for reconstruction of USH 12-18 from 1-90 to STH 134 during the 1998 season. The applicant wishes to use 5 acres of the previously approved mineral extraction site as a production location for the Pordland cement concrete paving mixture required to complete this work. Concrete jroduction is expected to be required in June and run through November 1998, although operations are scheduled to be focused during a two week period in June and a three week period in August/September. The timeframe may have to be extended if the highway project is not completed in Fall 1998 as scheduled. The applicant has requested hours of operation of 6:00 a.m. to 6:00 p.m., Monday through Saturday, unless special circumstances require. C. Exhibits B and C include the applicant's site and operational plans. The applicant intends to use 5 acres at the south end of the extraction site for the concrete plant, truck parking, and storage area. Operations will utilize up to 18 trucks to transport materials. Access to the site will be from the gravel and partially paved access drive to CTH N, approved with CUP 1484. When possible, access would be directly from the highway project to the south. D. Staff have reviewed the project against the six standards for granting a CUP in S. 10.255(2)(h). This operation is limited in duration, contained within a previously approved mineral extraction sit , and adjacent to an intensive highway project. Noise and dust are the greatest potent al impacts from this use. The applicant reports that the portable batch plants are equip ed with noise control devices such as mufflers. The berming required with CUP 14 6 may also assist somewhat in baffling noise impacts. Staff, however,recommend tha hours of operation be consistent with the hours approved in CUP 1476,particu ar for noise-generating processes (see Exhibit A). The applicant proposes that dust co trol would be obtained through use of dust control filters on the equipment and sp aying haul areas. The existing erosion control plan for