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29 Nov-01 <br /> LOUISE AVENUE <br /> lanter <br /> Former USTs � Existing USTs planter <br /> dispenser <br /> islands <br /> MW-1 ! o° <br /> 1177 <br /> 350 j✓d, <br /> MW-3 <br /> j 11.83 W <br /> <0.50 <br /> <01l50 E� <br /> storage T _ _ _ _ <br /> CL 8 building 4 <br /> dispenser <br /> trash islands <br /> enclosure I F <br /> car C <br /> W, planter was �°� Z <br /> storage <br /> MW-2 containers <br /> 1156 <br /> <0 50 — — ---- — — <br /> <0 50 <br /> EXPLANATION <br /> Groundwater Monitoring well <br /> / Groundwater elevation contour in feet referenced <br /> / to mean sea level (ft msl) Arrows indicate <br /> approximate groundwater flow direction –N- <br /> 1436 Groundwater elevation in ft ms] <br /> <0 500 Benzene concentration in parts per billion(ppb) <br /> <5 00 MTBE concentration in ppb Analysis by EPA <br /> Method 8260 FIGURE <br /> <x Not detected at detection limit x Scale(h) <br /> m <br /> Approximate hydraulic gradient=0 002 0 20 40 BID 2 <br /> N <br /> 41 1 <br /> Shell-branded (Independent) Groundwater Contour/ <br /> Service Station G Chemical Concentration Map <br /> 1071 North Main Street <br /> Manteca, California C A M B R I A October 25, 2001 <br />