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Work Pian for Underground Storage Tank Upgrade 4 <br /> Southland Store No 20632 4627 DaVnca Drive,Stockton,California Au ust 10 1998 <br /> of the well borehole using a truck-mounted drill rig equipped with 8-Inch diameter hollow stem augers <br /> The resultant borehole will be grouted with neat cement from total depth to surface grade using a <br /> tremle pipe All well-related material will be properly disposed of In accordance with state and local <br /> requirements <br /> Following the fuel-system upgrade at the site, a work plan and permit applications will be submitted to <br /> the SJCDEH for the installation of a groundwater monitoring well to replace well MW-4 <br /> Additional Site Assessment <br /> One additional well will be Installed near the hydrocarbon source area to replace well MW-4 A work <br /> plan for the Installation of the replacement well will be submitted to the SJCDEH separately <br /> The well will be constructed of 2-inch casing, perforated from about 10 feet below the equilibrated <br /> water surface to about 5 feet below grade Sand filter packing will surround the well casing to about 4 <br /> feet below grade, overlain by bentonite pellets saturated In place as a seal The bentonite seal will <br /> extend to about 2 feet below grade From 2 feet below grade to ground surface, the well will be <br /> completed with concrete, and enclosed at ground surface with a water-tight well box The new well will <br /> be developed and sampled with other wells at the site during the quarterly sampling event following <br /> Installation <br /> 20632SJC LTR <br /> FLUOR DANIEL GTI <br />