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December 16, 1992 A <br /> Unocal Service Station No 6981, Stockton, California Working To Restore Nature <br /> TABLE 5 <br /> HYDROCARBON CONCENTRATIONS IN SOIL SAMPLES <br /> FROM FORMER TANK PIT <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, Caltforrua <br /> (June 1988) <br /> Sample Ethyl Total Ormnic <br /> Number TPHg Benzene benzene Toluene Xylenes EDB Lead <br /> 5-15-A <10 <01 <01 <01 <01 <0025 <10 <br /> S-15-B 23 <01 02 02 13 018 <10 <br /> S-15-C <10 <01 <01 <01 <01 0 12 <10 <br /> S-15-D 13 <01 <01 <01 01 <0025 <10 <br /> S-15-E 1,800 50 55 100 270 0 12 <10 <br /> S-15-F 1,000 9 56 100 330 006 <10 <br /> S-22-G 1,900 84 66 110 230 NR NTR <br /> S-22-H <10 <01 <01 <01 <01 NR NR <br /> S-22-I 24 0 2 02 0 2 1 1 NR NR <br /> S-20-J <10 <01 <01 <01 <01 NR NR <br /> S-17-K 18 <01 <01 <01 12 NR NR <br /> S-17-L <10 <01 <01 <01 <01 NR 1'R <br /> S-17-M <10 <01 <01 <01 03 NR NTR <br /> S-19-N <10 <01 <01 <01 <01 NR NR <br /> S-18-P 1,400 24 92 110 240 NR NR <br /> All results to parts per million (ppm) <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> EDB = Ethylene Di-bromide <br /> NTR = Not Requested <br /> < = Less than the detection limit for the analvtical methods used <br /> Sample designation <br /> S-22-G Soil sample - sample depth (feet below grade) - sample location (see Plate 3) <br /> 3303?-to <br />