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The sampler was driven 18-ins with a standard 140-1b <br /> hammer dropped 30-ins . The number of blows required to <br /> drive the sampler each successive 6-in interval was counted <br /> and recorded to give an indication of soil consistency. The <br /> sampling equipment was washed with soap and rinsed with <br /> deionized water between samples to minimize cross- <br /> contamination. Samples were described using the Unified <br /> Soil Classification System (Plate 3) ; descriptions of the <br /> materials encountered are presented in the Logs of Borings <br /> (Plates 4 through 6) . <br /> Each sample was sealed with aluminum foil , plastic <br /> caps, and airtight tape. The samples were labeled and <br /> placed in iced storage for transport to our offices and then <br /> to the analytical laboratory . A Chain of Custody Record was <br /> initiated by the field geologist and accompanied the samples <br /> to the laboratory. A copy of this record is presented in <br /> Appendix A of this report . <br /> Drill cuttings were placed temporarily on polyethylene <br /> sheeting, and then used to backfill the borings . The <br /> borings were capped with concrete. <br /> 3 . 2 Excavation <br /> The area of the former dispenser was excavated by <br /> RAMCON to a maximum depth of 4 to 5 ft . Samples were <br /> collected from the limits of the excavation using a drive <br /> sampler. The samples were removed from the sample, sealed, <br /> and stored as described above. Each sample was analyzed for <br /> TPHg and BTEX. <br /> ROGER FOOTT ASSOCIATES, INC. <br /> -6- <br />