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ADVANCE SURVEYING & ENGINEERING CO. <br />M11 Cedar Lake Road, Minneapolis. MN 55416 Phone 541 0500 <br />February 29, 1988 <br />Robert Posthumus <br />24200 Natches <br />Lakewville, MN 55044 <br />Dear Robert: <br />At your request we have conducted an investigation of soil <br />conditions on a proposed building site designated by you. The <br />site is located at Big Island on Lake Minnetonka in Orono, <br />Minnesota. <br />The investigation was to determine the percolation rate of the <br />soils on site and to check for the presence of a high water table <br />or evidence of mottled soil that might indicate a seasonally <br />high, fluctuating water table. <br />The investigation consisted of exploratory soil borings to aid in <br />identifying soil texture and water conditions. The borings were <br />taken at the locations indicated on the attached site plan. <br />1WZ2 XQATZON MT=ODS: <br />Percolation tests and one or more deep borings were taken at <br />the locations indicated on the enclosed site plan. Logs of the <br />borings and tests are attached for your installer and inspector's <br />reference. <br />u80LT8t <br />Because the attached boring logs reveal the presence of mottled <br />soil and/or high water table at a high level in the borings, a <br />conventional system will not function at the proposed site. <br />