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90343TEXT CON-5 • <br /> existing wells. The new wells were then developed using a portable <br /> centrifugal pump. The wells around the outside of the containment area <br /> were done first to avoid cross contamination with the oil found in MW-14. <br /> Wells MW-13, MW-15, and MW-16 produced little water before being pumped <br /> ! dry. Well MW-14 produced more water and was pumped continuously for about <br /> 10 minutes at which time the pumped water had become clear. Approximately <br /> 10 more casing volumes of water were pumped before development was <br /> stopped. A water sample was then taken using a teflon bailer and placing <br /> the sample in two VOA vials. The vials were kept cold until delivered to a <br /> lab for analysis. The water was tested for total petroleum hydrocarbons, <br /> benzene, toluene, and xylene by Brown and Caldwell Analytical Laboratories <br /> in Emeryville, California. <br /> Additional fluid level measurements were taken by Woodward-Clyde on <br /> August 19 while LOF personnel took measurements on August 15 and 25. The <br /> results of these measurements are listed in Table 1. <br /> Laboratory Results <br /> The results of the laboratory analysis of the soil and water samples <br /> suggest that soil contamination is restricted to the tank farm containment <br /> area and no detectable contamination of groundwater is present. These <br /> results are not unexpected as only samples from B2 (within the containment <br /> area) exhibited obvious signs of contamination. Samples from Boring B2 <br /> within the containment area did, however, contain relatively high levels of <br /> hydrocarbons. Total petroleum hydrocarbon levels of 1600, 5900, and <br /> 3100 mg/kg were found in samples taken from depths of 4.5, 7.5, and 10.5 ft <br /> respectively. The results of the sample analyses are summarized in Table 2 <br /> while copies of the lab results are appended to this report. <br /> The water sample from MW-14 was taken to assess the possibility of <br /> hydrocarbons entering the groundwater from the oil layer found floating on <br /> the water table. The analysis of the sample indicated that no benzene, <br /> toluene or xylene (BTX) or fuel hydrocarbons were present above the <br /> detection levels. Although straw oil is a process oil and anticipated to <br />