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07-Nov-02 <br /> LOUISE AVENUE <br /> Planter '— <br /> Former USTs MW-1 © Planter <br /> 10.99 Existing USTs <br /> <0.50 ® �� <br /> -P N4 50 Dispenser i� <br /> � IslandsON <br /> P\ <br /> MW-3 <br /> 11.02 <br /> <0.50 w <br /> 068 <br /> r-LStorage <br /> Building <br /> Trash • Dispenser • <br /> Enclosure - Islands <br /> I <br /> Q9 <br /> Planter � <°� Z <br /> Storage <br /> MW-2 Containers <br /> 10.67 <br /> <0 50 <br /> <0 50 <br /> EXPLANATION <br /> Groundwater Monitoring well <br /> ® Fuel dispenser numbers <br /> R ' Groundwater elevation contour in feet referenced <br /> / to mean sea level(ft ms]) Arrows indicate <br /> approximate groundwater flow direction N- <br /> 12.23 Groundwater elevation in ft msl <br /> <0 50 Benzene concentration in parts per billion(ppb) <br /> 200 MTBE concentration in ppb <br /> FIGURE <br /> Not detected at reporting limit x Scale ft <br /> « O <br /> Approximate hydraulic gradient=0002 <br /> 0 20 40 80 2 <br /> 4�hell-branded <br /> Service Station Groundwater Contour/ <br /> 1071 North Main Street G Chemical Concentration Map <br /> Manteca, California <br /> C A M B R l A October 9, 2002 <br />