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ROSE MARIE LANE <br /> Planter <br /> MW-1 <br /> Waste -860 <br /> (ND) <br /> Oil <br /> - - - Tank (ND) <br /> W <br /> ❑ � w <br /> z <br /> Air& <br /> Water i ti d <br /> Fuel USTs <br /> - - - - - - - - - cry <br /> a <br /> Station - - - - - <br /> Building <br /> ' Canopy and <br /> Dispenser <br /> Islands <br /> MW-2 ❑ ❑ Exxon <br /> 836 \ _ Monitoring <br /> (0 621) Well <br /> N (ND) — _ I <br /> f Vent Lines — — — — \ MW-4 <br /> - - - - J VVEVV-2 -831 <br /> -NA- - - - - (ND) <br /> - - - - -(ND,28-May-99) (ND) <br /> VEW-1 <br /> NA ,� f MW-3 <br /> (ND) -844 <br /> EXPLANATION (ND) (ND) <br /> Groundwater Monitoring Well — (Nb) <br /> Vapor Extraction Well Former USTs <br /> YGroundwater elevation contour in feet referenced Location <br /> to mean sea level (MSL) Arrows indicate <br /> approximate groundwater now direction <br /> -860 Groundwater elevation in feet Scale <br /> (ND) Benzene concentration in ppb <br /> ND=Not Detected 010 20 40 Feet <br /> (ND) MTBE concentration in ppb 1 Inch=20 Feet <br /> Note Monitoring performed on 20-Aug-99 <br /> Approximate Hydraulic Gradient= 0 003 to 0 010 Baw map from Fugro map of 12 No, IW2 <br /> FIGURE GROUNDWATER CONTOUR/CHEMICAL CONCENTRATION MAP <br /> Shell-branded Service Station CAMBRIA <br /> 2 4445 Pershing Avenue 241-0837 <br /> Stockton, California <br /> Drawn by LS Date 30-Sep-99 Approved By A45 Date Lal d 5 <br />