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The water sample obtained with the Teflon® bailer was immediately <br /> transferred to two clean, 40-milliliter, volatile organic analysis <br /> (VOA) vials, filling each completely. Care was taken to minimize <br /> any agitation of the water sample. Each sample vial was then capped <br /> with a Teflon's septum cap leaving zero headspace in the vial. <br /> Groundwater for TPH analysis was collected using the bailer and <br /> transferred into a 500-milliliter amber glass container. All the <br /> containers (VOA vials and 500-milliliter amber glass) used were <br /> labeled with the well number, date, time, sampl--'s initials, location, <br /> and analysis required. Each sample was logg on chain-of-custody <br /> forms and in a field book. <br /> The samples were then immediately turned over to the on-site mobile <br /> laboratory, accompanied by the appropriate chain-of-custody form. <br /> Drill cuttings were contained in a 55-gallon drum pending review of <br /> the analytical re-alts of the soil sample. <br /> Man 1 <br /> The bore hole was backfilled with a grout mix consisting of sand, <br /> cement, bentonite powder, and clean water in the following ratios: <br /> One 94 lb. sack of Portland cement; <br /> r - Two sacks of Lonestar 120 sand; <br /> - • 5 lbs of bentonite powder;and <br /> • 4.5 to 6.5 gallons of clean water. <br /> Groundwater elevations were measured in the four existing wells. <br /> Approximately 3 feet of water was found in each well. Water levels <br /> were determined using the wetted tape method. All water levels <br /> were measured at the same time and prior to sampling of the wells. <br /> The water elevations were used to deternihi2 the groundwater <br /> gradient and direction of flow. <br /> 2-4 <br /> r. <br />