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.?r <br /> �4, 07-May-02 <br /> LOUISE AVENUE <br /> lanter <br /> Former USTs I Existing USTs planter <br /> MW-1 dispenser <br /> y islands <br /> 1331 <br /> <0.50 <br /> V 400 <br /> 1328 13.26 E <br /> <0 50 fW <br /> 13 <br /> storage <br /> building — — — I Z <br /> dispenser 1 <br /> trash islands <br /> enclosure <br /> 320 a <br /> O <br /> planter car �°� Z <br /> w <br /> � <br /> '3.12 <br /> storage <br /> N ,.2 containers <br /> 1310 <br /> <050— <br /> <0 <br /> 050<0 SO <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 msl <br /> <0 50 Benzene concentration in parts per billion(ppb) <br /> <5 0 MTBE concentration in ppb Analysis by EPA <br /> Method 8260 FIGURE <br /> <X Not detected at detection limit x scale(ft) <br /> Approximate hydraulic gradient=0 001 0 0 40 0 2 <br /> 4� <br /> hell-branded (Independent) Groundwater Contour/ <br /> Service Station Chemical Concentration Map <br /> 1071 North Main Street <br /> Manteca, California C A M B R I A April 11, 2002 <br />