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<br />. <br /> <br /> <br />Howard R, Green Company <br />CONSULTING ENGINEERS <br />May 13, 1999 <br />File: 806510J-0240 <br /> <br />Honorable Mayor and City Council <br />City of Elk River <br />13065 Orono Parkway <br />P.O. Box 490 <br />Elk River, MN 55330-0490 <br /> <br />RE: GOPHER STATE MINI-STORAGE <br /> <br />Dear Councilmembers: <br /> <br />We have reviewed the revised plans for the proposed expansion of the Gopher State Mini- <br />storage. Based on our review, we would offer the following comments: <br /> <br />1. <br /> <br />The grading plan still proposes the construction of a pond along the south property line. <br />This pond does not currently have an outlet. If the pond ever overflows, it would drain <br />onto the property to the south. We recommend that an outlet be provided which would <br />direct overflow to the north into the railroad ditch. <br /> <br />. <br /> <br />2. A concrete valley gutter is proposed to carry drainage from between the most easterly <br />existing building and the new proposed building. This valley gutter is shown flowing both <br />to the east and the northwest onto private property and the Burlington Northern Railroad <br />right-of-way. The existing drainage from this site sheets onto these adjacent properties. <br />Now, with the proposed construction of this valley gutter and the expansion of the site, <br />the drainage will be increased and channelized onto the two adjacent properties. We <br />recommend that some method of preventing erosion and disbursing the flow be provided <br />at each end of the concrete valley gutter. <br /> <br />3. The proposed plan shows a modular block retaining wall to be constructed along a <br />portion of the north property line. Additional elevations need to be shown in this area to <br />indicate the height of the proposed wall and how the remaining area will be graded to <br />match the existing grade of the adjacent property without grading off of the project site. <br /> <br />If you have any questions regarding the above comments, please call. <br /> <br />Sincerely, <br /> <br />Howard R. Green Company <br /> <br />~~ <br /> <br />Terry J. Maurer, P.E. <br /> <br />. <br /> <br />TJM:tw <br /> <br />O:\PROJ\80651 0-1303 .may99.doc <br /> <br />1326 Energy Park Drive. St. Paul, MN 55108 . 651/644-4389 fax 651/644-9446 toll free 888/368-4389 <br />