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. December 16, 1992 Working To Restore Nature <br /> Unocal Service Station No 6981, Stockton, California <br /> TABLE 6 <br /> HYDROCARBON CONCENTRATIONS IN <br /> SOIL SAMPLES FROM BORINGS <br /> Unocal Service Station No 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> (page 3 of 3) <br /> Sample Ethyl- Total <br /> Number Date TPHg Benzene Toluene benzene Xylenes <br /> S-0305-A-D* 03/05/92 <10 <0 005 <0005 <0 005 <0 005 <br /> S-0312-E-H 03/12/92 2,600 37 92 53 340 <br />' S-81792-IABCD 08/17/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> Results in parts per million (ppm) <br /> < = Below detection limit for analytical method used <br /> TPI-Ig = Total petroleum hydrocarbons as gasoline <br /> * S-50-118 = 4 3 ppm total lead, S-0305-A-D = <0 050 ppm organic lead <br /> Sample designation <br /> S-25-B1 Soil sample - sample depth (feet below grade) - boring number <br /> S-0305-A-D Soil sample - sample date - composite of samples A,B,C,D <br /> i <br /> 38032-10 <br /> I <br />