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May 22, 1996 • _ File: 230-319-11 CONSULTING ENGINEERS 1326 Energy Park Drive Mr. Steve Ach City Planner Sr.Paul,MN 55108 City of Elk River 612-644-4389 13065 Orono Parkway 1-800-888-2923 P.O. Box 490 Fax:612-644-9446 Elk River, MN 55330 RE: HILLSIDE ESTATES 6TH EDITION Dear Mr. Ach: As requested, we have reviewed the preliminary plat of Hillside Estates 6th Edition. It was prepared by Lot Surveys Company, Inc., and dated April 30, 1996. Based upon our review and comments received at the Staff Review meeting, we offer the following comments: CIVIL ENGINEERING ENVIRONMENTAL 1. Hillside Estates 6th Addition is a proposed cul-de-sac on the north end of Baldwin MUNICIPAL Street, which is Hillside Estates 2nd Addition. The proposed cul-de-sac consists PLANNING of four lots. This is a change from the original sketch of the entire Hillside area •SOLID WASTE which proposed Baldwin Street to continue northerly. STRUCTURAL SURVEYING 2. The Developer's intent would be to remove approximately 50 feet to 100 feet of TRAFFIC existing Baldwin Street and to install a vertical curve with the road grade TRANSPORTATION proceeding downward into the proposed cul-de-sac. ELECTRICAL/MECHANICAL 3. One of the biggest issues discussed at both the Staff Review meeting and a ENGINEERING: follow-up meeting with the Developers is whether or not to loop the watermain HVAC POWER DISTRIBUTION through the cul-de-sac to the north plat line, anticipating continuing it further north SCADA when the area above the 6th Addition is platted. In addition, if the watermain is SYSTEM CONTROLS looped, Glen Sundeen of the Elk River Municipal Utilities has indicated a desire to loop the electrical service. From the water utility perspective, looping of the watermain provides redundancy in the case of a break, less chance of stagnant water complaints because of the elimination of the dead end, better fire flow, since, in the case of a fire, water can be fed from both directions. From the Developer's perspective, looping of the watermains would cause harm to the value of the cul-de-sac lots by removing a swath of mature Oak trees. The elevation difference from the cul-de-sac to the rear lot line is approximately 16 feet, 978 at the cul-de-sac and 962 at the rear lot corner. Looping of the watermain would require OFFICES IN: approximately 20 feet - 30 feet wide swath of trees to be removed, so the equipment could operate and material could be stockpiled while the watermain is being •MINNEAPOLIS PRIOR LAKE ST.PAUL 230/319-2204.may WASECA An Equal Opportunity Employer