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PORTER AVENUE <br /> '00' <br /> \\`l� <br /> X <br /> (BDL) <br /> Tank Locotioo 0 WA) <br /> B-2 , ? •tor ~~ -. ( ,a% <br /> (a 2 I---- - ------ ,� <br /> +2-_I.\ VE-li #3E i• `NA} 9-12 INA) <br /> IT-0 _ <br /> 10) (NA) ` <br /> 3 i i yam' KA) <br /> W <br /> 220} �► W <br /> 00 <br /> 100 91 d g I <br /> I <br /> (BDL) Q <br /> 0- <br /> r I � <br /> Public + <br /> Restroom <br /> T `MW-3 <br /> BDL) <br /> Storage <br /> Building <br /> LEGEND NOTE s Calculated Hydraulic <br /> Gradient 0.009 ft/ft Approx'n Z Scale <br /> I = 2'T <br /> ® Typical Landscape 2T <br /> ® Gratz <br /> FIGURE 68 <br /> Boring Location/Somple Point BENZENE ISO-CONCENTRATION CONTOUR MAP <br /> Monitoring WeII IN SOIL 40'-50` FEET <br /> Vapor Extraction well Shell Service Station <br /> 6131 Pacific Avenue <br /> ---100... Benzene Contour Stockton CCL <br /> i400f Benzene Concentration <br /> terval'x400 In ppm AEGIS Job No 90- 020 <br /> Contour Inters F= J 00 ppm <br /> (BDL) Below Detection Limits DRAWN BY: Ed Bernard DATE' October 20, 1990 <br /> NA Not Analyzed REVIEWED BY: DATE* <br />