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z <br /> PORTER AVENUE <br /> MW-2 C c�iti o\MW-1 <br /> 5663 _ _ 56 49 <br /> (0 85) (ND) Existing UST <br /> Former UST —� 1 Location <br /> Location I 1—� (3-10,000 gal ) <br /> I <br /> / � 3 <br /> < / IL-1 <br /> - - - - - - i < <br /> VEW-2 - - ,VEW <br /> NA <br /> Building d <br /> _ � 0. <br /> Canopy and <br /> Dispenser Islands <br /> uj <br /> l—� J <br /> i <br /> MW-3 <br /> 5665 <br /> (5500) <br /> EXPLANATION <br /> -* Groundwater Monitoring Well <br /> Vapor Extraction Well <br /> N (0 85) Benzene concentration given in <br /> ppb ND=None Detected <br /> NA Not available <br /> / Ground water elevation contour, <br /> in feet referenced to Mean Sea <br /> Level (MSL) Arrows indicate <br /> if approximate flow direction <br /> 0 30 5665 Ground water elevation in feet MSL <br /> Note Water levels measured on 23-Aug-96 <br /> Scale in Feet Approximate hydraulic gradient=0 0015 <br /> Base map from Fugro map of 1-10-94 pp <br /> y <br /> PLATE GROUND WATER CONTOUR BENZENE CONCENTRATION MAP • <br /> Shell Service Station environ <br /> 2 6131 Pacific Avenue 96374 ., <br /> Stockton, California <br /> Drawn By JG Date 21-Oct-96 Approved By Date 10-3o `JI <br />