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~. <br />Sample No. Cohesion, psi Friction Angle Degrees <br />1 5.1 9.50 <br />2 -0- 27.30 <br />These test results are in general agreement with those pre- <br />viously reported in the October 1984 applications. <br />5.2 Stability Analysis <br />The previously performed stability analysis and strength test <br />results on refuse materials indicate a refuse pile designed <br />with an overall slope of 20 degrees will provide a long-term <br />static factor of safety greater than 1.5: <br />However, a review of the boring logs indicated that a clay <br />layer ranging from 10 to 20 feet thick may be encountered in <br />the upper soil foundation zone. A shear strength value of <br />C=1350 psf and 0 = 9° has been reported for a sample taken at <br />10 feet depth from boring No. 30. In order to consider this <br />clay layer in pile stability, a wedge type analysis was per- <br />formed using the test values. The analysis indicated a <br />factor of safety of 1.64. The analysis was performed con- <br />sidering a pile configuration with 2.5H:1V slopes and 30 foot <br />wide benches at every 50 feet vertically. The wedge stabili- <br />ty analysis is shown on Drawing No. MG-R-C-003. <br />~i <br />i <br /> <br />• <br />19 <br />