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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. Cabforrua <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 <0 005 <0 005 <0 005 <br /> S-0312-E-H 03/12/92 2 600 37 92 53 340 <br /> S-81792-1ABCD 08/17/92 <10 <0 005 <0 005 <0 005 <0 005 <br /> Results in parts per million (ppm) <br /> < = Below detection limit for analvtical method used <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> S-50-B8 = 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 /> 33031.-10 <br />