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4.0 LABORATORY TESTING PROGRAM <br />• <br />A laboratory testing program was performed for this project to <br />evaluate the geotechnical properties and to determine the <br />characteristics of the soils encountered. The laboratory test <br />results were utilized in the slope stability analysis and in <br />analyzing the drainage condition. <br />Moisture Content Tests (ASTM D-2216) were performed on each of <br />the soil samples taken during the drilling program. These <br />moisture contents were performed to indicate zones of highly <br />saturated soils, if encountered. Bulk density tests were <br />performed on selected samples to obtain in-situ density values to <br />• be utilized in the triaxial shear tests. General Classification <br />Tests were performed consisting of Grain Size Analysis, ASTM D- <br />422, and Determination of Atterberg Limits, ASTM D-423 and ASTM <br />D-424. These tests were performed to classify the subsurface <br />soils encountered. The results of the laboratory testing can be <br />found in Appendix B of this report. <br />Triaxial shear tests were performed on the alluvial subsurface <br />soils to determine the shear strengths of the foundation <br />materials. Two bulk samples were obtained during the drilling <br />program for testing. These soils consisted of a fine grained <br />sandy silt located in the upper stratum at Refuse Pile No. 3 and <br />• a fine to medium grained sand located in the lower stratums at <br />both Refuse Pile No. 2 and 3, The samples were placed in the <br />triaxial cell at approximately the same density as exists in the <br />7 <br />