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The stainless steel tube will then be driven with a rubber mallet into the newly exposed <br />soil surface and filled completely so that no headspace remains in the tube at either end. <br />Immediately after filling, each end of the tube will be covered with aluminum foil and <br />a plastic cap, and sealed with duct tape. The samples will be labeled with the project <br />name, time, date, sample identification number and sampler's initials, and placed in a <br />plastic bag. All samples will be stored on ice in a cooler chest while in transit to the <br />laboratory. Chain -of -Custody documentation will be maintained for all samples. <br />Because the depth to ground water is about ten feet bgs in the area of the USTs, it is <br />anticipated that no soil samples will be collected below the removed USTs. Because the <br />excavation will be shored, the sidewalls will also not be accessible for sampling. <br />However, four soil borings have been drilled near the margins of the tank cavity during <br />previous investigations at the Site, and soil samples from these boreholes have provided <br />information on soil conditions near the USTs. A water sample will be collected from the <br />tank cavity excavation. <br />5.3 Water Sampling in the Former Tank Cavity <br />Roux will collect a sample of the standing water in the former UST excavation. A <br />disposable polyethylene bailer will be lowered into the standing water, filled and brought <br />to the surface. The water will be decanted from the bailer into two 40 -milliliter volatile <br />organic analysis (VOA) vials. These VOA vials will be labeled and stored on ice in a <br />cooler chest while in transit to the laboratory. <br />5.4 Laboratory Analyses <br />All soil and water samples collected during this investigation will be delivered for <br />chemical analyses to Sequoia Analytical (Sequoia) of Concord, California, a California <br />Department of Health Services certified laboratory. <br />5 Doc #A159W01.1.5 <br />