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October 3, 2016 <br /> Single-Family Residence <br /> L84A.Job No. 16-124 <br /> Page 9 <br /> International Building Code (IBC). To maintain stability, the residence may be supported <br /> on footing foundations constructed at least one foot into the underlying glacial till and <br /> transitional beds deposits. <br /> DISCUSSION AND RECOMMENDATIONS <br /> GENERAL <br /> Based on soil conditions encountered by the test pits excavated on the project site, it is <br /> our opinion that the site is suitable for the proposed development from the geotechnical <br /> engineering viewpoint, provided that the recommendations in this report are fully <br /> implemented and observed during and following completion of construction. <br /> Conventional footing foundations constructed at least one foot into the underlying very- <br /> dense cemented glacial till and hard transitional beds deposits, but not on advance <br /> °awash soil, may be used to support the proposed residence. <br /> The surficial topsoil and weathered soil of the project site contain a high percentage of <br /> fines and can be easily disturbed when saturated. The steep portion of the site would be <br /> very sensitive. Grading work in wet winter months on the site may cause complication <br /> and difficulty. Therefore, grading work and foundation Construction work should be <br /> scheduled and completed between April 1 and October 31. Erosion protection and <br /> drainage control measures recommended in this report should be implemented in the early <br /> stage of grading work for site stabilization. <br /> LIU & ASSOCIATES, INC. <br /> 14133 <br />