1993- MCWD permit #93-72 - Laserfiche WebLink

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July 28, 1993 From: Landview Landscaping 3670 Hwy 7 Excelsior, MN 55331 Stephen Spartz To Advance Surveying&Engineering Co. 5300 S. Hwy. No. 101 Minnetonka, MN 55345 Jim Parker Attention Jim Parker, Described below is Matter of Maintenance According to the United States Department of Agriculture Soil Conservation Service St. Paul Minnesota. Slope Protection for Dams and Lakeshores Minnesota Technical Release 2 April 1988. From their Advice I have put together a contract that states it is the responsibility of the Homeowner(Susan Sumey)to get the necessary groundcover to grow on the 1:1 slope. The home owner has the responsibility to decide with the advice of Landview Landscaping and others involved which ground cover is best suited for the Susan Surrey project Once the groundcover is in place and stabilized the project can be considered a low maintenance project that involves Susan Sumey to have the responsibility to keep over 90%of the project covered with lowgrowth ground cover such as Crown Vetch or Sod. The Soil Conservation Service policy in Minnesota requires that all maintenance is the responsibility of the landowner(s). Before any assistance is provided,the landowner(s)must sign an agreement stating that they are responsible for the maintenance of the installed practice. The SCS may assist with suggestions for maintenance only. Lakeshore protection or slope protection may be disturbed by ice action or by water runoff larger than those used in design. These conditions can only be addressed by designing flexible protection and that is easy to repair or replace with a moderate maintenance effort. The design and installation will be done to the best of the designers ability and knowledge, and maintenance is totally the responsibility of the landowner(s). There are unpredictable sources of problems for Lakeshore and slope protection-ice jacking and Waterlogging. Ice Jacking is a phenomena that involves the freezing and thawing of the lake surface. When the ice expands in freezing, it pushes up and outward against the shores of the lake with very large pressure which can move almost any type of protection measure. Flexible measure such as riprap can be pushed up and out of place leaving holes in the protective layer. These holes can allow undermining of the protective layer and loss of its effectiveness. Semi-ridgid measures, such as precast concrete blocks, can start to unravel, and rigid measures, such as a concrete wall, can be cracked beyond repair. Waterlogging is a phenomena that occurs when the internal strength of soils can decrease when it becomes saturated by groundwater and seepage flows within the bluff. The added weight of buildings and other structures can increase stresses on the soil and contribute to slope failure.