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of the excavation. Native soil was found to consist of <br /> yellow brown silty sand. <br /> Samples 5-13-2 and 5-15-3 were collected from the base <br /> _ of the tank cavity after excavating below the former <br /> gasoline tank with the backhoe at the turbine (north) and <br /> fill port (south) ends of the tank, respectively. For each <br /> sample, the sampler was used to drive a clean brass sample <br /> sleeve into soil in the backhoe bucket immediately after <br /> native soil was removed from the excavation and the <br /> uppermost 6 to 8 inches were scraped off with a shovel . The <br /> tank was of single-walled steel construction; some corrosion <br /> was evident , but no evidence of holes was observed on the <br /> _ outer surface of the tank. No evidence of soil <br /> contamination was noted in the samples (possible very slight <br /> odor) or in the walls of the excavation. Native soil was <br /> found to consist of yellow brown silty sand. <br /> Sample S-2-4 was collected on June 5, 1990 , from the <br /> base of a trench below the location of a joint in the former <br /> _ product delivery line . The sample was collected at a depth <br /> of approximately 2 ft below surface grade using the drive <br /> sampler. <br /> After each sample was collected, the sleeve was removed <br /> _ from the sampler and sealed with aluminum foil , plastic <br /> caps , and airtight tape. It was then labelled and placed <br /> into iced storage. The sample designation reflects the <br /> sample matrix (S = soil ) , the approximate sample depth (in <br /> feet below grade) , and the sample number. The approximate <br /> locations of the samples within the tank excavation are <br /> shown on the Generalized Site Plan (Plate 2) . A Chain of <br /> Custody Record was initiated by. the sampler and accompanied <br /> the samples to the analytical laboratory. A copy of this <br /> record is included in Appendix A. <br /> ROGER FOOTT ASSOCIATES, INC. <br /> _ -2- <br />