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A - 7 <br />A-5 LABORATORY TESTING <br />A series of laboratory tests were performed by Chen and <br />Associates in order to assist with the accurate classification <br />of the site soils and to help with the selection of suitable <br />parameters for stability analyses. Tests performed included <br />moisture and density, gradations, Atterberg limits, and <br />triaxial compression tests on soils. In addition, direct shear <br />tests wer performed to measure residual shear strength of a <br />claystone sample, slake durability tests were conducted to <br />evaluate the susceptibility to weathering of selected samples, <br />and unconfined compressive strength tests were run on <br />selected core samples. <br />The results of the laboratory testing program are pre- <br />sented in the attached report of Chen and Associates, Plate <br />A-17. <br />oeo+~roxocoravn+.w Mc <br />