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10-Jan-0- <br /> EXPLANATION <br /> } Groundwater Monitoring Well <br /> Groundwater elevation contour in feet <br /> referenced to mean sea level (MSL) <br /> Arrows indicate approximate groundwater <br /> flow direction <br /> 8754 Groundwater elevation to feet above MSL <br /> (<0 500)Benzene concentration to ppb _N_ <br /> <X=Not detected at detection limit X <br /> (<2 S0) MTBE concentration in ppb <br /> Approximate hydraulic gradient=0 0003 <br /> a� <br /> ------- - -� MW-1A <br /> a 87 511 <br /> 1 MW-3A T(<5 00) <br /> 8754 A (46,900) <br /> (<0 500) <br /> 1 Existing Fuel USTs <br /> � 1 a <br /> � as <br /> Carwash V <br /> Canopy and 1 <br /> Dispenser Islands <br /> 1 - MW-2A <br /> 87521 <br /> 1 - (<100) <br /> (2,640) <br /> Fortner UST <br /> Location <br /> ON R <br /> AMP -INTERSTAr�E ROUTE NO- 205 <br /> Scale <br /> FIGURE <br /> 0 15 34 64 <br /> 1 inch=30 Feet <br /> Base Map Fugro of 415195 2-1 <br /> Shell-branded Service Station Groundwater Contour/ <br /> 3725 Tracy Boulevard G Chemical Concentration Map <br /> Tracy, California <br /> Incident No 98996222 C A M B R I A <br /> December 7, 1999 <br />