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Work Plan Evaluation of Soil and Ground Water December 4, 1939 <br /> Unocal Station No. 6981, Stockton, California AGS 38032-3W <br /> 17E type steel,55-gallon, liquid-waste drums, approved for this purpose by the Department <br /> of Transportation. The wells will be allowed to stabilize a minimum of 48 hours following <br /> the development process, before samples are collected. <br /> j <br /> i <br /> I <br /> +`s A submersible pump will be used to purge approximately 3 to 5 well volumes of water until <br /> the physical parameters of the water (pH, conductivity and temperature) stabilize. <br /> Following groundwater recovery to approximately initial static conditions, a sample <br /> ` representative of the formation water will be collected using a Teflon bailer cleaned with <br /> Alconox and deionized water. <br /> sus <br /> The water samples will be sealed in laboratory-cleaned, water sample containers <br /> (appropriate for the laboratory analyses to be performed),with the appropriate preservative, <br /> labeled, and promptly placed in iced storage. Chain of Custody Records will be initiated <br /> F <br /> and will accompany the samples to the analytical laboratory. <br /> by the geologist in the <br /> Copies of the Chain of Custody Records will be included in our final report. <br /> LABORATORY ANALYSES <br /> �-' The soil sample collected just above the saturated zone in the borings, and the samples <br /> -- -- - <br /> ------ -----collected from each-boring having the highest-PID reading-will besubmitted_far_laboratary -.- --_-.-- --____-- _..------.-_-.-- _— <br /> analyses. If the soil sample from just above the saturated zone has the highest reading on <br /> 21 <br /> LA Baca' Ge0S st01ns <br /> �P � <br />