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May 6, 1992 ����� <br /> Former Unocal Station 2859, Stockton, California <br /> • <br /> TABLE 1 <br /> CONCENTRATIONS OF HYDROCARBONS IN SOIL SAMPLES <br /> Former Unocal Service Station No. 2859 <br /> • 1665 Pacific Avenue <br /> Stockton, California <br /> (February 1992) <br /> Sample Ethyl- Total <br /> Number TPHg Benzene Toluene benzene Xylenes <br /> S-21-B7 <1. 0 <0. 005 <0 . 005 <0. 005 <0. 005 <br /> S-51-B7 <1. 0 <0. 005 <0 . 005 <0 . 005 <0 . 005 <br /> S-21-B8 <1. 0 <0. 005 <0 . 005 <0 . 005 <0. 005 <br /> S-51-B8 <1. 0 <0. 005 <0 . 005 <0. 005 <0. 005 <br /> S-11-B9 <1. 0 <0 . 005 <0 . 005 <0 . 005 <0. 005 <br /> S-26-B9 <1 . 0 <0. 005 <0 . 005 <0 . 005 <0 . 005 <br /> S-31-B9 <1. 0 <0. 005 <0 . 005 <0 . 005 <0. 005 <br /> S-42-B9 <1. 0 <0. 005 <0 . 005 <0. 005 <0. 005 <br /> S-6-B10 <1 . 0 <0. 005 0 . 023 <0 . 005 0 . 009 <br /> S-11-B10 1, 900 1 . 5 15 2 . 1 41 <br /> S-21-B10 12 , 000 28 710 170 880 <br /> S-26-B10 7 , 300 3 . 4 270 90 500 <br /> S-31-B10 1, 400 0.27 32 17 89 <br /> S-51-B10 120 0. 083 0. 29 0. 59 2 . 5 <br /> • S-0227-1ABCD* 9 . 2 0. 009 0. 16 0. 036 0. 33 <br /> Results in parts per million (ppm) <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> < = Less than the detection limit for analytical methods used <br /> * Total lead detected at 15 ppm <br /> • Sample designation: <br /> S-15-B8 <br /> Boring number <br /> Depth of sample <br /> Soil <br />• S-0725-1ABCD <br /> L Composite soil number <br /> Sample date <br /> Soil <br />• <br /> • 0317bbou <br /> 38012-9 <br />