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continuously from approximately surface level to 42 feet bgs to assess the deeper stratigraphy. <br /> 4 This was done to determine if a permeable soil zone was present below 25 feet bgs from which a <br /> deeper groundwater sample could be obtained. <br /> t. Upon retrieval of the 4-foot long acrylic liner from the borehole, the sample was screened using a <br /> photoionization detector (PID). Based on the PID readings, a section of the liner was cut out at <br /> the selected sampling depth for submittal to the analytical laboratory. Where no PTD readings <br /> were available, or where the PID showed low readings, soil samples were collected just above <br /> the groundwater table. The ends of the acrylic tubes containing the soil to be tested were covered <br /> S with Teflon, capped with plastic end-caps, and placed in sealable plastic bags. The soil samples <br /> were then labeled and transported directly to the on-site mobile laboratory using proper chain-of- <br /> custody protocol. <br /> 4.4 Groundwater Sampling <br /> All soil borings were advanced deep enough to allow sufficient water to collect. Shallow <br /> groundwater samples were collected from each boring by installing a temporary well with ten <br /> f slottedpolyvinyl chloride (PVC) screen, and bailing a grab sample through the temporary <br /> feet o <br /> casing. A depth discrete groundwater sample was obtained at 42 feet bgs from ATC-5 using a <br /> HydropunchTM tool in order to define the vertical extent of petroleum hydrocarbon impacted <br /> groundwater. <br /> The groundwater samples were carefully poured into the appropriate sample containers. The <br /> r groundwater samples were properly labeled and either transported directly to the on-site mobile <br /> laboratory or placed in a cooler with ice, and shipped to the fixed base laboratory using proper <br /> chain-of-custody protocol. <br /> ATC Associates Inc. <br /> H.\L.EHRMAMQS_132_W\FLEPORTS\drillrpt.doc 6 <br /> 4 <br />