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Hennepin Conservation District <br />MEMORANDUM <br />TO: John Waldron <br />FROM: James Piegat, Ph.D. <br />DATE: 14 August, 1987 <br />SUBJECT: Repairing Erosion Damage <br />Enclosed is are some general recommendations about reF,airing damage caused <br />by rains earlier this month. Naturally, there may be additional concerns on a site - <br />by -site basis. <br />Solution of lakeshore problems should begin at the shoreline. Stabilize the shore <br />and then work upslope. Retaining walls needed for structural support should be <br />designed by an engineer. Such walls should be supported by both tie -backs and <br />vertical posts. <br />Prevention consists of controlling surface runoff and ground water seepage. <br />Subsurface drains should be placed behind dtl retaining walls and at the toes of all <br />regraded slopes. <br />Please contact our office if you have any further questions. We would be happy <br />to discuss particular solutions with your contractor, if you see the need. <br />205 Ridge Pata Fildg 12450 Wayzata Boulevard Minnetonka, Minnesota 55343 Telephone 1612) 544.8572 <br />