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<br />M~ <br /> <br />lXlNSILTlNG ENGINEERS <br /> <br />Ci'VnEt\iG,I,~'EEI?,rNG <br /> <br />ENVlRONA1ENTAt <br /> <br />NWNICiPAl <br /> <br />,PlANNING <br /> <br />STRUCTURAL <br /> <br /> <br />.SURVEY,ING <br /> <br />TRArFle <br /> <br />T,~ANSP()RrAnON <br /> <br />1326 Energy Park Drive <br />St. Paul, MN 55108 <br />612-644-4389 <br /> <br />Fax: 612-644-9446 <br /> <br />.9800 Shelard Parkway <br />Minneapolis, MN 55441 <br /> <br />612-546-0432 <br />Fax: 612-544-6398 <br /> <br />September 19, 1994 <br />File: 230-223-30 <br /> <br />Mr. Pat Klaers <br />City Administrator <br />City of Elk River <br />13065 Orono Parkway <br />P.O. Box 490 <br />Elk River, MN 55330 <br /> <br />RE: WESTERN AREA STORM SEWER <br /> <br />Dear Mr. Klaers: <br /> <br />Over the past several weeks, numerous accusations have been made regarding the storm <br />sewer facilities in the western area of the City. These accusations are based on gross <br />exaggeration or blatant untruths regarding the storm sewer. Thus far, I have chosen to <br />ignore these issues, hoping that they would go away on their own. But now, I feel that it is <br />appropriate that I respond in writing to the accusations that have been made directly to me <br />or that I have heard. The following is a summary of the issues that I have heard and my <br />response to each of these. <br /> <br />1. <br /> <br />The trunk stonn sewer system on Orono Parkway should have been five feet <br />deeper to provide service to a larger area. <br /> <br />The water depth in the western portion of Lake Orono where the trunk storm sewer <br />discharges is fairly shallow. Eighteen to twenty feet out from the outlet pipe, the <br />water depth varies from 1.4 to 0.7 feet. Thirty feet out from the outlet pipe, the <br />water depth is just barely over 2 feet deep, and fifty feet out from the outlet pipe, the <br />water depth is still only 3 feet deep. It would have been physically impossible to <br />lower this pipe 5 feet as has been suggested. The pipe possibly could have been <br />lowered 0.5 to 1.0 feet more than it was. The elevation that the pipe is set at is the <br />normal high water level for Lake Orono; thus, no Department of Natural Resources <br />permit was required for this installation. During the design phase, we met and <br />discussed with representatives of the DNR the potential elevation of the pipe. Given <br />the small amount of lowering that we could have achieved, it was determined that it <br />was better to set the pipe elevation at the normal high water level and not apply for <br />a DNR permit which we may not have been granted. <br /> <br />230f223.190S.sep <br />