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03-Dec-04 <br /> LOUISE AVENUE <br /> Former USTs MW-1 Planter <br /> Former USTs <br /> 756 �■ <br /> <050 <br /> l <br /> CO 50 Dispenser <br /> Islands <br /> MW-3 <br /> c ~ 7.46 W <br /> j <0.50 W <br /> 7 4 <0 50 r% <br /> 2 <br /> - - - - - I � Z <br /> Trash ■ <br /> Dispenser � <br /> Enclosure Islands - x <br /> 73 <br /> Planter <br /> 72� <br /> I <br /> MW-2 �(�Cntainers <br /> 7.15 <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 ms]) Arrows indicate <br /> approximate groundwater flow direction <br /> -N- <br /> 7.56 Groundwater elevation in ft msl <br /> <0.50 Benzene concentration in parts per billion(ppb) <br /> <0 50 MTBE concentration in ppb <br /> <x Not detected at reporting limit x Scale (ft) FIGURE <br /> Approximate hydraulic gradient= 0 003 2 <br /> M 0 20 40 80 <br /> N <br /> N <br /> 4 <br /> rmer Shell Service Station © Groundwater Contour/ <br /> 1071 North Main Street Chemical Concentration Map <br /> Manteca, California <br /> C A M B R I A October 26, 2004 <br />