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r-" r,-I- T--7 f'-1rt, Lam. r`.7 r-", r-7: 1 --T rr..'T F-" r"" I-". E--V <br /> w <br /> "' <br /> A3 Entrance <br /> V <br /> SUBSTATION <br /> r' �1 <br /> OW-4 /0 -6 OW-5 LEGEND <br /> �10�TPH isoconce ntratian line for <br /> ' sail (ppm) <br /> '/— Q OW-1 Observation well location <br /> ` 1 Notes: <br /> 10 Dashed isoconcentration lines indicate areas <br /> O i 'W-1 of less confident estimate due to sparse data. <br /> /OW-2 ' 100 <br /> N <br /> N r• 0 10 20 feet <br /> Ln .FORMER il:::::::;:::: ::::::::::::::::::: .:::::: :;... :::;::::::::::: <br /> TANK <br /> i <br /> LOCATION <br /> :. ;..:. <br /> .•...........I....... •.............. <br /> OFFICE BUILDING <br /> I <br /> :' <br /> • <br /> OW-3 <br /> FIGURE S.TPH Isoconcentration Lines Estimated for Soils- <br /> Tracy Service Center Underground Tank Investigation, <br /> February 1988 <br />