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�uu5 u7i1a 14:L! rn� aau5ba� INSTANT TESTING/ALLIED I�oo4 <br /> This soil migration may clog the drain line or cause "piping" in adjacent soil surrounding the drain line <br /> (creation of a void space in the adjacent soil). <br /> THE SECOND CHARACT�R is that supraglacial till is predominantly stiff in its shearing resistive <br /> strength. Therefore, supraglacial till can remain beneath the residentiaf building, because it is suitable <br /> malerial to support of the building foundation (shallow-depth spread footings) a�d ground floors. <br /> CONCLUSION Storm waterwill infiltrate through the oxidized zone tv the unoxidized zone, cspecially <br /> during the Spring wet season. This water will drain slowly to the unoxidized z�ne, because clayey <br /> supraglacial till reiards rapid downward drainage_ Nevertheless, residential hause construction with a <br /> full depth basement is feasible on this lot, based on location of the persistent ground water level (about <br /> a 13 feet depth in the Borings), and based on supraglacial till 10 reliably support thE building. The <br /> forthcoming engineering report expands on basic conclusions herein; The lot is suitable for residential <br /> building construction with a full depth basement. Finally, perimefer drain lines must be installed along <br /> the foundations to remove potential water in the oxidized zone. <br /> If you have questions regarding this addendum or if we can assist you further, please contact us at <br /> (952) 890-5909. <br /> Respectfully Submitted, <br /> Allied Test Drilling Cvmpany <br /> � <br /> � <br /> J mes M. Bridell, PE <br /> enior Geotechnical Engineer <br /> Allfed 05039 (pretiminary feasibility report) 3 <br /> July <br /> 18,2005 <br />