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April 7, 1992 JIM! <br /> ARCO Station No 2168, Stockton, California <br /> TABLE 1 <br /> CONCENTRATIONS OF HYDROCARBONS INOIL SAMPLES <br /> FROM BORINGS B-1 THROUGH B- t <br /> ARCO Service Station No. 2168 <br /> 441 West Charter Way <br /> Stockton, California <br /> (July 1991) <br /> Sample Ethyl- Total <br /> Number TPHg Benzene Toluene benzene Xylenes <br /> S-10-B1 <1. 0 <0 . 005 <0. 005 <0 . 005 <0. 005 <br /> S-20-B1 <1. 0 <0 . 005 <0. 005 <0 . 005 <0 . 005 <br /> 5-25-B1 40 0. 46 0._090 0 . 170 1. 2 <br /> S-30-B1 2 . 1 0.115 0. 10 0. 032 0 . 18 <br /> S-10-B2 <1. 0 <0 . 005 <0. 005 <0. 005 <0 . 005 <br /> S--20-B2 <1. 0 0 . 008/ <0. 005 <0 . 005 <0 . 005 <br /> 5-B2 <1. 0 <0. 005 <0. 005 <0 . 005 <0. 005 <br /> S-40-B2 <1. 0 0 . 00591 <0 . 005 <0 . 005 <0 . 005 <br /> S-15-B3 <1 . 0 <0 . 005 <0. 005 <0 . 005 <0 . 005 <br /> S--20-B3 <1. 0 0. 023 / <0. 005 <0 . 005 <0. 005 <br /> S-15-B4 <1. 0 0 . 023/ <0 . 005 <0 . 005 0 . 0082 <br /> S-20-B4 <1. 0 0 . 059 / <0. 005 <0 . 005 0. 017/ <br /> Results in parts per million (ppm) <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> < = Below detection limits for the analytical methods used <br /> Sample designation: <br /> S-20-B4 <br /> Boring number <br /> Depth of sample <br /> Soil <br /> 31009-4W <br />