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June 30, 1992 <br /> Unocal Station No. 6981, Stockton, California <br /> TABLE 1 <br /> CONCENTRATIONS OF HYDROCARBONS AND LEAD IN SOIL SAMPLES <br /> Soil Borings B-11 through B-13 <br /> Unocal Service Station No. 6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> (March 1992) <br /> (Page 2 of 2) <br /> Sample Ethyl- Total Total <br /> Number TPHg Benzene Toluene benzene Xylenes Lead <br /> 5-15-Bll 5, 300 0. 35 100 71 330 NA <br /> 5-35-Bll 3 , 900 3 . 2 130 50 240 NA <br /> 5-50-B11 4, 300 17 130 42 200 NA <br /> S-15-B12 2 . 0 0. 007 0.043 0. 013 0. 076 NA <br /> 5-35-B12 1. 5 0. 026 0. 025 0.017 0. 074 NA <br /> 5-50-B12 3 . 3 0. 32 0. 029 0. 007 0. 049 NA <br /> _ 5-15--B13 <1. 0 <0. 005 <0. 005 <0. 005 <0. 005 NA <br /> S-35-B13 140 0.73 4 . 2 1. 1 5. 7 NA <br /> 5-50-B13 12 0. 25 0. 38 0. 11 0. 75 NA <br /> 5-0312-E-H 2 , 600 3 . 7 92 53 340 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 methods used <br /> NA = Not analyzed <br /> * Organic lead <br /> Sample designation <br /> 5-0305-A-D: date, composite of samples A, B, C, and D <br /> 5-15-Bll <br /> �--- Boring number <br /> �- Depth of sample <br /> Soil <br /> i <br /> E <br /> 0 <br /> 38 <br /> 380332-72-7 <br /> 1 <br />