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The sampler was driven 18-inA with a standard 140�lb <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„) ; descripti-ons of the <br /> Fmaterials encountered are present d in the Logs of Borings <br /> (Plates 4 through 6) . <br /> Fil <br /> Each sample was sealed with luminum foil , plastic <br /> caps , and airtight tape. The samples were labeled and <br /> rill placed in iced storage for transport to our offices and then <br /> to the analytical laboratory . A° Chain of Custody Record was <br /> F, <br /> initiated by the field geologist and accompanied the samples i <br /> to the laboratory. A copy of this record is -presented in 1i <br /> APpendi.x A.: of , thi.s report . <br /> F <br /> Drill cuttings were placed--temporarily on polyethylene <br /> Fsheeting, and then used to backfi 1 th4 borings . The <br /> borings were capped with concr,-te. <br /> F, <br /> 3 . 2 Excavatio <br /> 1 The area of the former dispenser was excavated by <br /> RAMCQN to a maximum depth of 4 to 5 ft . Samples were <br /> P <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 /> F.' <br /> Fi, -6- ROGER FOOTT ASSOCIATES, INC. <br />