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w <br /> KEI-P89-1104 .QR1 <br /> April 19, 1991 <br /> Page 3 <br /> After completion of the soil sampling on December 13 , 1989, a water <br /> sample was collected from the on-site domestic well system after <br /> purging a minimum of three casing volumes. The sample was <br /> collected while the pump was operating to avoid drawing water from <br /> the holding tank. <br /> All samples were analyzed by Sequoia Analytical Laboratory in <br /> Redwood City, California. All soil samples were analyzed for total <br /> petroleum hydrocarbons (TPH) as gasoline, benzene, toluene, xylenes <br /> and ethylbenzene (BTX&E) , tetraethyl lead, and ethylene dibromide. <br /> The waste oil tank bottom samples and waste oil remote fill piping <br /> samples were analyzed for total extractable petroleum hydrocarbons <br /> (TEPH) , BTX&E, EPA method 8010 constituents, PCB's, and the metals <br /> - cadmium, chromium, lead and zinc. The water sample was analyzed <br /> for TPH as gasoline, BTX&E, halogenated volatile organics, <br /> tetraethyl lead and ethylene dibromide. <br /> Analytical results of the final soil samples collected from beneath <br /> the fuel storage tanks, {samples Al, A2 (25.5) , B1 and B2 (26 . 5) 1 , <br /> indicated levels of TPH as gasoline ranging from non-detectable to <br /> 1. 7 ppm, with non-detectable levels of ethylene dibromide. <br /> Analytical results of the soil samples, collected from the <br /> sidewalls of the fuel storage tank pit, indicated levels of TPH as <br /> gasoline ranging from non-detectable to 16 ppm, levels of ethylene <br /> dibromide ranging from non-detectable to 0. 014 ppm, and levels of <br /> benzene ranging from non-detectable to 0. 58 ppm. Analytical <br /> results of the soil sample collected from the new tank pit <br /> indicated non-detectable levels of all constituents analyzed. <br /> Analytical results of the final soil samples collected from product <br /> pipe trenches, {samples P1 (6) , P2 (17) , P3 (5) and P4 (8) } , indicated <br /> levels of TPH as gasoline ranging from non-detectable to 1. 7 ppm, <br /> with non-detectable levels of benzene, except sample P2 (17) , which <br /> showed 7, 200 ppm of TPH as gasoline and 170 ppm of benzene. <br /> Analytical results of vapor piping trench samples indicated non- <br /> detectable levels of TPH as gasoline for sample V1, and 4 .2 ppm TPH <br /> as gasoline for sample V2 , with non-detectable levels of EDB in <br /> each case. <br /> The waste oil tank bottom and remote fill piping samples showed <br /> non-detectable levels of TEPH and all EPA method 8010, 8020 and <br /> 8080 constituents. <br /> Analytical results of the water sample collected from the on-site <br /> domestic well indicated 160 ppb of TPH as gasoline, with non- <br /> detectable concentrations of all other analytes. <br /> The analytical results for the old and new fuel tank pit, product <br /> pipe trench and vapor pipe trench soil samples are summarized in <br />