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1_ INTRODUCTION <br />This report was prepared by Mr. Robert H. Swan, Jr. and Dr. Zehong Yuan, P.E. <br />(Georgia), both of GeoSyntec Consultants ( GeoSyntec), Atlanta, Georgia. The report <br />was reviewed by Dr. Gary R. Schmertmann, P.E. (Georgia), also of GeoSyntec, in <br />accordance with the internal peer review policy of the firm. The laboratory testing <br />program described in this report was performed at the request and authorization of Mr. <br />Terry Mandziak of Golder Associates, Inc. (Golder), Lakewood, Colorado. <br />Golder authorized GeoSyntec to undertake a laboratory testing program to evaluate <br />the shearing resistance of an East Cresson ore material for Golder project No. 983- <br />2348.121. GeoSyntec understands that the sample preparation procedures and testing <br />conditions used in the testing program were selected by Mr. Terry Mandziak of Golder <br />to model anticipated field conditions. The direct shear testing was conducted at <br />GeoSyntec's Soil- Geosynthetic Interaction Testing Laboratory located in Atlanta, <br />Georgia. <br />2. TESTING PROGRAM <br />2.1 Scope <br />^1995 Gu,Syntcr Consultants <br />The testing program consisted of one direct shear test series. The direct shear test <br />series consisted of three tests. <br />2.2 Testing Method <br />The direct shear tests were performed in accordance with the American Society for <br />Testing and Materials (ASTM) Standard Test Method D 3080, "Direct Shear Testing of <br />Soils Under Consolidated Drained Conditions ". The tests were conducted in a large <br />direct shear device containing an upper and lower shear box. The upper shear box <br />measured 12 in. by 12 in. (305 mm by 305 mm.) in plan and 3 in. (75 mm) in depth. The <br />lower shear box measured 12 in. by 14 in. (305 mm by 355 mm) in plan and 3 in. (75 <br />mm) in depth. <br />GL10603/SG198073 1 98.07.31 <br />