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A-5 <br />PERMEABILITY TESTS <br />Permeability tests were performed on two rela- <br />tively undisturbed samples of the core material from the <br />dam. The tests were performed in accordance with the <br />method described on Plate A-5, Method of Performing Per- <br />colation Tests. The results of the permeability tests <br />are tabulated below. <br />DIRECT SHEAR TESTS <br />Direct shear tests were performed on selected, <br />relatively undisturbed samples from the tailings embank- <br />ment and foundation materials to determine the strength <br />parameters of these soils. The tests were run with vary- <br />ing confining pressures to simulate the overburden pres- <br />sure in the embankment; and the test samples were also <br />saturated prior to testing. The tests were performed <br />in accordance with the procedure described on Plate A-6, <br />Coefficient of <br />Boring <br />Depth <br />Soil <br />Permeability <br />Number <br />(ft) <br />Type <br />(k ft/ ear) <br />1 <br />51-, <br />SM/SC <br />38 <br />1 <br />35� <br />SM/SC <br />6 <br />DIRECT SHEAR TESTS <br />Direct shear tests were performed on selected, <br />relatively undisturbed samples from the tailings embank- <br />ment and foundation materials to determine the strength <br />parameters of these soils. The tests were run with vary- <br />ing confining pressures to simulate the overburden pres- <br />sure in the embankment; and the test samples were also <br />saturated prior to testing. The tests were performed <br />in accordance with the procedure described on Plate A-6, <br />