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., 24 Nov-03 <br /> N Forer <br /> � m � Former ;_. <br /> Building I Restrooms <br /> MW4 I---- -� <br /> 25 52 <br /> (<0 50) <br /> > (<0 50) Former Product Former <br /> Piping Trench Dispenser <br /> A 1 (tyP) <br /> MW-5 <br /> ��✓ __ -2567 <br /> -----Former i yl ormer - <br /> I <br /> Building '_USTs <br /> CA <br /> 1 MW-1� <br /> -25 59 -- <br /> I I Ik II <br /> (2 7) I Ik II <br /> L --_--------- <br /> -25 50)_A_ <br /> 0 >� <br /> (<0 50) -25-25 68 68 <br /> E�<0 50) (<0 50) <br /> ;,. F� (4 4) <br /> DrivewaySidewalk Driveway <br /> EXPLANATION EAST CHARTER WAY <br /> Groundwater Monitoring Well <br /> Groundwater elevation contour in feet referenced to <br /> mean sea level(ft msl) Arrows indicate <br /> J approximate groundwater flow direction <br /> -24.02 Groundwater elevation in ft msl _ <br /> (<0 50) Benzene concentration in parts per billion(ppb) <br /> (<5 0) MTBE concentration in ppb <br /> <x Not detected at reporting limit x FIGURE <br /> Scale(ft) <br /> Approximate hydraulic gradient=0 004 2 <br /> 0 15 30 60 <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 October J, 2003 <br />