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-~ <br />• required assistance by a dozer due to the steep terrain and sage- <br />brush cover. <br />The borings were advanced through the overburden soils with <br />4-inch diameter continuous flight augers. The borings were <br />logged by a representative of Chen and Associates, Inc. <br />Samples of the subsurface materials were taken with 2-inch <br />and 1 3/8-inch spoon samplers. The samplers were driven into the <br />various strata with blows from a 140-pound hammer falling 30 <br />inches. This test is similar to the Standard Penetration Test <br />described by ASTM Flethod D-1586. Penetration resistance values <br />indicate the relative density cr consistency of the subsoils. <br />DeF~th at which the samples were taken and the penetration resis- <br />tance values are shown on the Logs of Exploratory Borings, <br />• Figs. 2 and 3. <br />Percolation tests were conducted in the area of the proposed <br />sedimentation pond (Flole 10). Th~~ tests were conducted in 4-inch <br />diareter auger holes at the locations shown on Fig. 1 and noted <br />as P-1, P-2 and P-3. Results of the percolation tests are shown <br />on Table II which include the dep':hs the tests were conducted. <br />LABORATORY TESTING <br />Samples obtained from the exploratory borings were examined <br />and visually classified by the project engineer. Laboratory <br />testing performed on selected samples includes standard property <br />tests such as natural moisture contents and dry unit weights, <br />grain-size analyses, and liquid and plastic limits. Addition- <br />• ally, swell-consolidation tests, direct shear tests and falling <br />Chen & Associates <br />