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r , 09-Sep-04 <br /> r --i— <br /> N MW-4 Former Former <br /> Building <br /> -25.09 g Restrooms <br /> <0.501<0501<0.50 ------- <br /> Former Product Former <br /> Piping Trench Dispenser <br /> A (typ) <br /> �.I MW-5 <br /> ' <br /> ---F -2520 <br /> `J-��^--rJ 1L1' <0 501<0.501<0.50 <br /> I <br /> -----' �I <br /> I <br /> Former <br /> d Former STs <br /> ,n uildmg <br /> MW-1 <br /> -25.14 <br /> MW-3 <1 0/<1.0/244, L------------ <br /> ls� tJ ------------- <br /> -24.91 -- <br /> <0 501<0.501<0.50 'l <br /> ❑ i' Ao ! N MW-2 <br /> -25.23 <br /> Driveway Sidewalk <0 5019.213. Driveway <br /> L— <br /> EAST CHARTER WAY <br /> EXPLANATION <br /> Groundwater Monitoring Well <br /> Groundwater elevation contour in feet referenced to <br /> mean sea level(ft msl) Arrows indicate <br /> approximate groundwater flow direction <br /> MW-1 Well designation <br /> -25.30 Groundwater elevation,ft msl <br /> 2.3/<0.501140---Benzene/MTBE/1,2-DCA concentrations <br /> in groundwater in parts per billion(ppb) <br /> <x Not detected at reporting limit x <br /> Scale(ft) FIGURE <br /> Approximate hydraulic gradient= 0 002 <br /> 0 15 30 80 2 <br /> r <br /> Former Shell Service Station Groundwater Contour/ <br /> 1313 East Charter Way Chemical Concentration Map <br /> Stockton, California <br /> C A M B R I A July 1, 2004 <br />