5.1 PCSR 03-28-1995 - Laserfiche WebLink

Home Browse Search

MAR - 22 -- 95 WED 10 : 29 MSA ST PAUL P . 0 2 S •l'IIr March 20, 1995 File: 230-266-70 [ SILTING E1G11B6RS 1326 Energy Pork Drive Mr. Steve Rohlf Sr.Poul,MN 55108 Building and Zoning Administrator 612.644.4389 City of Elk River 1800-8882923 13065 Orono Parkway Fox 612.6449446 P.O. Box 490 Elk River, MN 55330 RE: NORTHERN CON-AGG, INC., GRAVEL MINING PERMIT REQUEST Dear Mr. Rohlf: As requested, we have reviewed the submittal package from Northern Con-Agg, Inc., regarding their application for a conditional use permit for a mining operation. Based on their submittal package and our review, we would offer the following comments: CIVIL ENGINEERING' 1. It appears from their estimates that the mining operation is expected to last iiiRONMENTAL approximately 15 years at an annual rate of 400,000 tons per year. ICIPAI P`ANN`G 2. The site has direct access onto TH 169. There are existing turn lanes and sou°WASTE acceleration lanes which provide for reasonable access for mining operation onto STRUCTURAL and off of the trunk highway. The site could access directly onto County Road 77 suRVEYING on the south of the property. However, the submittal indicates that the vast TRAFFIC majority of the traffic is expected to leave via the highway either north or south. TRANSPORTATION EIECTRICAUMECHANICAL 3. Available information indicates that the water table at the site is expected to be at ENGINEERING: approximately elevation 945. The Plan of Operation indicates that mining is HVAC expected to approximately elevation 955. This would leave an estimated 10 foot PCwER DIST MOON separation between the bottom of the mining and the expected ground water SCA DA elevation. SYSTEM CONTROLS 4. The Plan of Operation indicates that material will be crushed and washed at the site. Since an existing mining operation currently operates here, there already is a DNR Water Appropriation Permit in place which monitors the use of ground water for the washing operation. 5. The final Reclamation Plan indicates a bottom elevation of approximately 955. The highway on the east side is in the range of approximately 975 at the lowest point to approximately elevation 1,009 at the southeast corner. Therefore, the property will FCES IN: slope up to the existing highway elevations. The Reclamation Plan shows existing MINNEAPOLIS elevations in the range of 1035 on the south, west, and north of the site. This PRIOR LAKE indicates a slope at 4:1 of approximately 75 feet in vertical elevation. This will be ST.PAUL