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SEP-20-1996 10 24 P.02iO3 <br /> • 11 <br /> MINING ENGINEERS <br /> 1326 Energy Pork Driye September 20. 1996 <br /> St.Poul,MN 55108 File: 230-332-11 <br /> 612.644-4389 <br /> 1-800-888-2923 Mr. Steve Ach <br /> Fax:612-W-9446 City PIanner <br /> City of Elk River <br /> 13065 Orono Parkway <br /> P.O. Box 490 <br /> Elk River, MN 55330 <br /> RE: D-J's HOME CENTER SITE PLAN REVIEW <br /> Dear Mr. Ach: <br /> • <br /> CIVIL ENGINEERING, As requested, we have reviewed the Grading and Drainage Plan for D-J's Home Center. <br /> ENVIRONMENTAL The Site Plan was prepared by John Oliver & Associates, andwas dated and had a <br /> MUNICIPAL revision date of August 22, 1996. Based on our review, we would offer the following <br /> •PIANNING comments: <br /> SOLID WASTE <br /> STRUCTURAL 1. This property is a relatively long and narrow parcel. It appears from the existing <br /> SURVEYING contours that natural flow of drainage was from west to east across the parcel. <br /> TRAFFIC There is not enough information provided to ensure that the natural drainage from <br /> TRANSPORTATION the property to the west will be allowed to continue to flow. The existing 874 <br /> contour just ends on the property to the west. It is unclear whether or not a large <br /> ELECTRICAL/MECHANICAL flat area will be created by the proposed grading on D-J's parcel. More <br /> ENGINEERING; information should be provided. <br /> HVAC <br /> POWER DISTRIBUTION 2. Around the proposed building, there is an 873 contour that is shown and it is <br /> xADA labeled as a 1% grade. Actually, to create a 1% grade, that contour will have to <br /> SYSTEM CONTROLS <br /> be cut back and ended further south on both the east and west side of the building. <br /> 3. There is a piece of pipe labeled as 12" PVC that just runs from the south end of <br /> the building to the south end of the property, where a detention pond is to be <br /> located. There is no indication of how water will flow into this pipe, and no <br /> storm drainage calculations have been provided to indicate whether the pond will <br /> discharge or not. If the pond is intended to discharge, it is not clear how this will <br /> occur. Calculations should he provided to indicate how the pond was sized and <br /> OFFICES IN: what the intent is as to whether it will discharge or not, and also how much of the <br /> INNEAPOLlS existing flow from the west was sized into this pond. <br /> PRIOR LAKE <br /> ST.PAUL <br /> WASECA <br /> An Equal Opportunity Employer <br />