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PORTER AVENUE <br /> o q <br /> o a <br /> MW-2 0 c ,� MW-1 <br /> 60 47 0 6014 <br /> l Existing UST <br /> (0 64) ' ' -�- (1 p) Location <br /> Former UST � <br /> Location (3-10,000 gal ) <br /> ' <br /> 1 ' <br /> ' < z <br /> VEW-2'- - VE .1 <br /> (DRY) (NA} <br /> W <br /> ut]dtng V <br /> Canopy and ' <br /> ' Dispenser Islands <br /> 0 <br /> cC. <br /> MW-3 <br /> 6039- <br /> (3100) <br /> 03(3100) <br /> EXPLANATION <br /> - Groundwater Monitoring Well <br /> Vapor Extraction We]I <br /> N (420) Benzene concentration given to <br /> ppb ND=None Detected <br /> NA Not available <br /> Scale <br /> Ground water elevation contour, <br /> 0 15 30 60 Feet in feet referenced to Mean Sea <br /> I Inch=30 Feet Level (MSL) Arrows indicate <br /> approximate flow direction <br /> 6039 Ground water elevation in feet MSL <br /> Note Water levels measured on 26-Feb-97 <br /> Base map from Fugro map of ]-10-94 Approximate hydraulic gradient=0 005 <br /> PLATE GROUND WATER CONTOUR BENZENE CONCENTRATION MAP • <br /> Shell Service Station envir®s <br /> a Z 6131 Pacific Avenue 97374 <br /> Stockton, California <br /> Drawn By JG Date 16-Apr-97 Approved By Date tl c, <br />