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TABLE 1: Summary of Soil Analyses: Former Tank Cavity and Product Line Trenches <br /> ARCO Facility No.2093,Tracy,California <br /> Sample.._.- Depth BTEX Distinction _ Total <br /> Designation Date (feet bgs) TPH-G Benzene Toluene Ethylbenzene Xylenes Lead EDB <br /> r� <br /> Former Tank Cavitv <br /> SW1 7/21/93 8.0 1.0 0.0054 0.0068 0.0051 0.0053 21 ND <br /> SW2 7/21/93 8.0 10 0.023 0.017 0.037 0.037 NA NA <br /> SW3 7/21/93 8.0 ND 0.028 0.040 0.014 0.063 NA NA <br /> SW4 7/21/93 8.0 2.0 0.23 0.061 0.050 0.27 17 ND <br /> SWS 7/21/93 8.0 1.5 0.044 ND 0.011 0.029 NA NA <br /> SW6 7/21/93 8.0 ND ND ND ND ND 23 ND <br /> SW7 7/21/93 8.0 ND 0.018 ND 0.005 0.17 NA NA <br /> SW8 7/21/93 8.0 2600 11 110 58 340 16 ND <br /> Product Line Trenches <br /> Li 7/29/93 4.0 3.2 0.050 0.044 0.060 031 NA NA <br /> L2 7/29/93 4.0 15 0.085 0.29 0.25 1.7 NA NA <br /> 13 7/29/93 4.0 1,600 12 120 43 250 28 ND <br /> L4 7/29/93 4.0 14 0.15 0.22 032 2.4 NA NA r <br /> L5 7/29/93 4.0 14 0.16 0.066 036 1.6 37 ND <br /> FOOTNOTES <br /> All concentrations reported in mg/kg(ppm) <br /> TPH-G = Total Purgeable Petroleum Hydrocarbons(USEPA Method 8015) <br /> BTEX Distinction(USEPA Method 8020) <br /> Total Lead(USEPA Method 7421) <br /> EDB = Ethylene Dibromide(USEPA Method 8010) Y; <br /> NA = Not Analyzed <br /> ND = Not dctec•.ed (for detection limits see laboratory reports). <br /> bgs = Below ground surface <br />