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gsi <br /> KLEINFELDER <br /> File No, 20.2520.02 <br /> February 1, 1990 <br /> Foothill Engineering <br /> 12793 Paddy Creek <br /> Lodi,CA 95240 <br /> Attention: Ery Rifenburg <br /> Subject; LABORATORY TESTING OF SAND TREATED <br /> WITH VARIOUS TYPES OF ADDITIVES <br /> Gentlemen: <br /> As requested, we performed laboratory tests tc.determine the relative stability of samples of <br /> sand which were treated with various types of additives. The sand originated from the Turner <br /> Winery project and was indicated to be contaminated with a hea un<er oil. <br /> Additives which were used to stabilize soil included cement, quicklime, and asphaltic oil <br /> emulsion named SS-1 H. Samples were treated with various percentages and combinations of <br /> additives prior to stabilometer testing. The samples were allowed to cure and dry for varying <br /> periods of time prior to testing. <br /> In some cases, stabilometer tests were performed up to three times on the same test <br /> specimens. Individual tests were performed after additional periods of curing and/or specimen <br /> conditloning. Stabilometer tests were repeated on the same specimens labeled as 4,7, 11, 12, <br /> 13, and 14. <br /> Table I is a summary of the stabilometer tests. You will find that the stabilometer test results <br /> vary significantly depending upon the length of cure period. <br /> After reviewing the test results,you will find the stabilometer value to be lower as the percentage <br /> of SS-11-1 is increased. It is our opinion that the drop off in the stabilometer values is a short <br /> term condition, and that long term stabilometer value of the material with the higher oil content <br /> would be significantly higher. <br /> `� KI-EINFELDER 2825 Nkt.Myrtle Slivet, Sun klon. CA 95205 (209)948-1345 <br />