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AET #94-1805 - Page 3 <br /> Ground Water <br /> Ground water was measured in the boring at a depth of about 7' below the ground surface. It <br /> is reasonable to expect that the ground water level would be at or above the level of nearby <br /> Forest Lake. Therefore, the water level at this site maybe higher than shown. Variations in <br /> ground water conditions can be expected seasonally and annually. <br /> GEOTECHNICAL CONSIDERATIONS <br /> For our analysis and recommendations, we have considered the following: <br /> • Wood-frame residential type construction with finishing materials that do not allow <br /> appreciable differential settlement without distress cracking; normal utility services to the <br /> structure. <br /> • Fill and soft organic deposits to a depth of nearly 15' and which are quite weak and <br /> compressible. <br /> • Underlying clayey glacial till soils which are quite firm at a depth of about 2' to 3' into <br /> the till formation. <br /> CONCLUSIONS AND RECOMMENDATIONS <br /> Discussion <br /> The existing fill and organic soils are not recommended for support of foundations for this <br /> structure. The organic deposits are quite weak, and more importantly, very compressible even <br /> under light loading conditions. These organic deposits can be expected to subside several inches <br /> during the normal life of 50 years or so for the proposed house. With the addition of even very <br /> little additional fill on the surface and the overall light loadings of a house, the organic deposits <br />