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S.otton 1 Sktlotl 2 <br /> 130 1 b <br /> 120 ISO <br /> G 110 Q_E 120 <br /> f00 1ii 1f0 <br /> s0 I0O <br /> x <br /> > f1O > <br /> 70 IIO <br /> 80 70 <br /> DSO 0 s0 10o ISO 200 2S0 -50 0 s0 100 1S0 200 <br /> Hwhadd Dbkl=(It) mwkwtd VAIMM(ft) <br /> Svcfan 3 SwOon 4 <br /> ISO 130 <br /> 140 140 <br /> L ISO =130 <br /> 1 120 1120 <br /> d <br /> Ito Ito <br /> IOO I00 <br /> 90 eo <br /> so H <br /> so 0 s0 too ISO 200 0 so too ISO 200 2s0 <br /> HwhoMd DUkm(it) Hw w dd OlAao8(ff) <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 3W 0.1 tsf,200psf 125 pcf <br /> Measured 32' 0.2tsf,403psf 86 pcf(dry) <br />