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19 Feb-03 <br /> LOUISE AVENUE <br /> Planter — <br /> ® Planter <br /> Former USTs MW.1 11.59 Existing USTs <br /> � <br /> <0.50 <br /> �.� 130 Dispenser <br /> Islands <br /> 0 i <br /> �\ <br /> %4 0 <br /> 11.52 W <br /> ID'S"�-r <br /> <0.50 <br /> a <o so <br /> Storage <br /> Building <br /> � Trash a <br /> Enclosure Dispenser <br /> � Islands <br /> 11.4 <br /> = <br /> Planter � <br /> 11.3 - <br /> 1 <br /> Storage <br /> r <br /> wff-2 Con <br /> r <br /> "a <br /> <0.50 — — <br /> <0 50 <br /> EXPLANATION <br /> F� ci <br /> roundwater Monitoring well <br /> uel dispenser numbers <br /> R ` Groundwater elevation contour in feet referenced <br /> / to mean sea level(ft mst) Arrows indicate <br /> approximate groundwater flow direction -N- <br /> 1223 Groundwater elevation in ft msl <br /> <OSO Benzene concentration in parts per billion(ppb) <br /> 200 MTBE concentration in ppb <br /> FIGURE <br /> <x Not detected at reporting limit x Scale(ft) <br /> Approximate hydraulic gradient=0 002 0 20 40 so <br /> m <br /> 2 <br /> hell-branded Service Station Groundwater Contour/ <br /> 1071 N Main <br /> North Street Chemical Concentration Map <br /> Manteca, California C A M B R I A <br /> January 7, 2003 <br />