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STL SIERRA TESTING LABORATORIES, INC <br /> GEOTECHNICAL AND MATERIALS TESTING SERVICES <br /> Project No 98-136 <br /> 16 April 1998 <br /> Upgradient Environmental Consultants <br /> 3365 Kimberly Road <br /> Cameron Park, California 95682 <br /> Attention. Mr Clyde Hebbron <br /> Subject Valley Motors <br /> LABORATORY TEST RESULTS <br /> Dear Clyde. <br /> As requested, Sierra Testing Laboratories, Inc, has performed laboratory testing on <br /> three undisturbed samples of material from the subject site The samples were <br /> identified as HP-4@21 0', HP-4@27 0', and HP-4@60 0' The samples were <br /> received by our laboratory on 24 March 1998 The test performed on the <br /> submitted sample was as follows <br /> i1 ) Hydraulic Conductivity (ASTM D5084) <br /> The results of the Hydraulic Conductivity tests are presented on Table 1 , attached <br /> We appreciate the opportunity to be of service to you on this project and look <br /> forward to providing additional service, as needed, in the future <br /> Should you have any questions or required additional Information, please contact <br /> our office at your convenience <br /> Very truly yours, <br /> Sierra Testing Laboratories, Inc <br /> Michael P Walker <br /> Project Manager <br /> copies 2 to Upgradient Environmental Consultants , Mr Clyde Hebbron <br /> enclosure Table 1 <br /> 5088-B Hillsdale Cir EI Dorado Hills, CA 95762 (916) 939-3460 Fax (916) 939-3507 <br />