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Section 1 Section 2 <br /> 13O 140 <br /> 120 130 <br /> C 110 iat 120 <br /> p 100 i 110 <br /> d{ so a{100 <br /> W 00 <br /> 70 60 <br /> 80 70 <br /> DSO 0 SO 100 ISO 200 250 30 0 SO 100 ISO 200 <br /> FMmnid MCI=(ft) YMiadd mdan(n) <br /> Section 3 Section 4 <br /> %so ISO <br /> 140 140 <br /> L 130 V 130 <br /> t 20 1 120 <br /> 110 110 <br /> too f00 <br /> ao H <br /> 60 50 <br /> 30 0 SO 160 ISO 260 0 SO 100 156 200 250 <br /> Hwhwld PdWW(ft) HN tw d Vskm(ft) <br /> Figure 1. Cross sections for the proposed waste pile configuration showing both the old (inside) <br /> new surface. <br /> (Consulting Geotechnical Engineers and Material Testing). A hollow stem auger was used to <br /> drill through the entire thickness of the existing pile. Samples were extracted at various depths <br /> and used to estimate the soil properties. A set of the results are attached. <br /> Direct shear tests were performed to determine the effective cohesion and friction angle. The <br /> result of these tests covered an exceptionally wide range and thus a triaxial shear test was <br /> performed to confirm the appropriate values. The unit weight of the material was determined <br /> during compaction tests. Both the original assumed values and the values determined from <br /> testing are shown in the table below. <br /> Source Friction Angle Cohesion Unit Weight <br /> Assumed XY 0.1tsf,200psf 125 pcf <br /> Measured 32' 0.2tsf,403psf 86 pcf(dry) <br />