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<br /> . . . <br /> iM~ i . <br /> February 6, 1995 -. <br /> IIIISltTl\I: E.II:IU:f:RS File: 520-053.70 <br /> FEci 07 <br /> 1326 Energy Park Drive Mr. Dan Winkel ,...,...., . <br /> :....i, ~ <br /> SI. Paul,MN 55108 City of Arden Hills <br /> 61264H389 1450 West Highway 96 . <br /> 1.800.888.2923 Arden Hills, MN 55112 <br /> Fax: 61 J.64H446 <br /> RE: MINNESOTA ARMY NATIONAL GUARD . <br /> SITE PLAN REVIEW <br /> Dear Mr. Winkel: I <br /> This letter is submitted as a review of the site plan for the referenced development. Based . <br /> upon our review of the plans and comparison with the future needs of the City of Arden <br /> Hills, the following issues have arisen. Initially, there are several options available for the <br /> utilities connection between the National Guard property and the City's municipal sewer . <br /> (Nil ENGINEERING and water systems. The water connection should be completed with l2-inch watermain as <br /> ENVIRONMENTAL addressed in our previous memorandums regarding the connection (enclosed). <br /> ,'AUNI(lPAL With regard to the sanitary sewer connection, there are several options available to the. . <br /> PLANNING <br /> SOLID WASTE City, two of which are recommended for consideration at this time. The existing sanitary <br /> STRUCTURAL sewers within Hamline Avenue and parallel to Trunk Highway 96 have adequate capacity . <br /> SURVEYING to handle to additional flows contributed by the National Guard facility and additional <br /> TRAFFIC future development within the immediate vicinity of that area. However, the IS-inch trunk <br /> TRANSPORT A TIQN main north of Interstate 694 flows into an MWCC interceptor which is already nearing its . <br /> capacity. For this reason, it would not be recommended to construct this connection for <br /> ELECTRICAL/MECHANICAL the conveyance of large volumes of future sanitary sewer flow. <br /> ENGINEERING . <br /> HVAC The enclosed map indicates the two alternatives that best suit the sewer connection. <br /> POWER D!$TRIBUTlON Alternate A consists of the installation of forcemain south along Hamline A venue to the <br /> SCADA manhole approximately 700 feet south of Trunk Highway 96. This allows the lift station . <br /> SYSTeM CONTROLS within the National Guard property to pump the sewage directly to a manhole within <br /> Hamline Avenue, allowing it to gravity flow through the existing lO-inch sanitary sewer. . <br /> This is the shortest length offorcemain installation; however, it would involve substantial <br /> disruption to Hamline A venue, as well as the traffic within that street, for an extended <br /> period of time. . <br /> Alternate B consists of the construction of forcemain west from Hamline along the north <br /> side of Trunk Highway 96 to a gravity manhole approximately adjacent to the existing City . <br /> OFFICES iN of Arden Hills' village hall. This would consist of approximately 400 additional feet of <br /> forcemain; however, it would be less disruptive to both traffic and the structural integrity <br /> MINNEAPOLIS of Hamline A venue. In addition, the National Guard would be able to avoid the additional. . <br /> PllOR LAKE costs associated with the restoration of Hamline A venue. In our opinion, this method <br /> 51. PAlIl would be the best alternative available for the City of Arden Hills. <br /> WASECA . <br />