7.3. SR 01-21-2014 - Laserfiche WebLink

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TILLER CORPORATION Application to Amend Conditional Use Permit CU 97-19 Mineral Excavation and Hot-Mix Asphalt Plant Elk River, MN I. INTRODUCTION Tiller Corporation (Tiller) is seeking an amendment to their existing Conditional Use Permit (CUP) for Mineral Excavation on a parcel of land located in the northern portion of Elk River (Site). The original CUP was issued in 1997 and included a 113 acre parcel of property located north of 221st Avenue.The CUP was amended in April 2001 to include property located south of 221St Avenue and again in June 2011 to allow mining within the 200' setback along the Elk River Landfill property located to the north of the Tiller Site. Figure 1, General Location Map, illustrates the location of the property. Permitted activities include mining, processing and stockpiling of aggregate, stockpiling and processing of recyclable concrete and asphalt and the operation of a hot-mix asphalt plant. The purpose of this amendment request is to: 1. Expand the mining limits to include an additional parcel of property located south of the existing permitted properties; Tiller recently purchased the parcel of property located immediately south of their current permitted Site which encompasses approximately 13.65 acres (expansion parcel). Figure 2, Zoning Excerpt, demonstrates the expansion parcel is located within the Mineral Extraction Overlay District with an underlying R1a Single Family Residential zoning designation. The expansion parcel is bordered by US Highway 169 to the east, the proposed C.S. McCrossan parcel to the west and the reclaimed Aggregate Industries parcel to the south. 2. Allow excavation of material to the water table; The current CUP allows for the extraction of material to within five feet of the regional groundwater table with subsequent backfilling of clean fill soils to attain final reclamation grades.The sand and gravel resource extends below the water table and aggregate is mined from below the water table in other areas within the City and County. This amendment application includes a revision to excavation elevations to allow mining an additional five feet, to the top of the regional groundwater table, to more efficiently utilize the sand and gravel deposit. To support this request, a groundwater protection plan has been prepared and is included in Section II 8a,of this application. 3. Extend the hours of operation of mining and operation of the hot-mix asphalt plant 24 hours a day,7 days a week; A request for extended hours of operation is made at this time to accommodate the growing need to supply materials for overnight construction activity designed to minimize impacts to the travelling public. The Site will continue to be subject to the MN State noise Page 1 1