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March 20, 1992 <br /> ARCO Station No 6100, Tracy, California <br /> TABLE 1 <br /> CONCENTRATIONS OF HYDROCARBONS IN SOIL SAMPLES <br /> COLLECTED FROM BORINGS B-1 THROUGH B-5 <br /> (June 1990) <br /> ARCO Service Station No. 6100 <br /> 25775 Patterson Pass Road <br /> Tracy, California <br /> (page 2 of 2) <br /> Sample Ethyl- Total Organic <br /> Number TPHg Benzene Toluene benzene Xylenes Lead <br /> S-15-B5 160 0 . 14 0 . 32 0 . 54 12 NA <br /> S-20-B5 42 0. 10 0. 099 0 . 096 1 . 0 NA <br /> S-25-B5 <2 . 0 0 . 077 <0. 050 <0 . 050 0 . 060 NA <br /> S--30-B5 <2 . 0 0 . 14 0 . 056 <0 . 050 <0 . 050 NA <br /> Soil results in parts per million (ppm) <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> < = Less than the detection level for the analytical <br /> methods used <br /> NA = Not analyzed <br /> Sample designation: <br /> S-15-B1 <br /> — Boring number <br /> L-- — Depth of sample <br /> Soil <br />►. <br /> 0129ccar <br /> 34041-2 <br /> F <br />