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<br /> <br />APPENDIX A <br />The field study consisted of observing and sampling the <br />surface conditions of the existing slope. <br />The laboratory study consisted of performing moisture content <br />and dry density tests and direct shear strength tests. The <br />moisture content and dry density test results are presented below. <br />The results of the direct shear strength tests are presented below. <br />Moisture content and dry density were determined for the <br />sample tested. The moisture content was determined according to <br />ASTM Test Method D2216. The dry density of the sample was <br />determined by using the wet weight of the entire sample tested. <br />The dry density of the sample tested was about 103 pounds per cubic <br />foot at a moisture content of about 24 percent. <br />Direct shear strength properties of a remolded sample were <br />evaluated in general accordance with testing procedures defined by <br />ASTM Test Method D3080. The direct shear strength test was <br />performed on a sample obtained from the near surface soils from the <br />slope. Based on the results of the direct shear strength tests an <br />internal-angle of friction of 16 degrees and a cohesion of 150 <br />pounds per square foot for wet soil conditions and an internal <br />angle of friction of 23 degrees and a cohesion of 150 pounds per <br />square foot for drained soil conditions were used in our analysis. <br />i <br />~Lamberr ana associates <br />CONSUL LING OEOiECN NiCAL ENGINEERS •NO <br />N•iE RIAL If STING <br />