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o <br />GROUND WATER CONDITIONS <br />Free ground water was observed in both boreholes. The final <br />measured water levels were at 1* depth below ground surface, <br />corresponding to elevation 929.8 to 929.6 feet. The lake water <br />elevation at the time was 929.8 feet. <br />The ground water table at this site will fluctuate very <br />slightly as the Lake Minnetonka water elevation varies. We were <br />informed that the 100-year design flood elevation of Lake Minneton <br />is 931.5 feet. The low water level is 928.6 feet. <br />DEVELOPMENT PLANS <br />It is proposed to build a single family dwelling having an <br />attached wood deck and porch at the rear or northerly side, closes <br />to the lake. There will also be a separate, detached, two-car <br />garage at the southerly end of the property close to Baldur Park <br />Road. <br />It is likely that the house will not have a basement. <br />Structural loads on the foundations of such buildings are <br />relatively light. However these buildings are sensitive to settle­ <br />ment. <br />ANALYSIS AND RECOMMENDATIONS <br />The ground surface elevation at this property is presently <br />very low, only about 1' above lake water level. Thus it is certaii <br />that fill will have to be imported to raise the grades sufficient!; <br />to permit the construction. The addition of any new fill will <br />create compression and settlement of the thick buried peat and <br />organic silt layer. Furthermore the peat and organic silt extend <br />much too deep to permit excavation. <br />It is recommended that the house structure at this site <br />should be supported upon a deep foundation system which extends <br />down through the fill and peat, and achieves its load-bearing <br />capacity by a combination of skin friction and point bearing in <br />the underlying inorganic sandy and clayey soils. <br />s SUBTERRANEAN <br />ENGINEERING CORP. <br />MINNEAPOLIS. MINNESOTA