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• 3 . Red brown, silty, clayey sand from below the clay layer <br /> to the base of the borings. Over most of the site, <br /> this sand is very fine grained; in some locations it <br /> grades to a coarser gray brown sand at the 15 foot <br /> level. While in other areas, it grades into almost a <br /> clayey silt. <br /> Ground water was first observed in the borings from 14 to 18 feet <br /> below the surface. After time, the water rose to approximately 10 <br /> feet below the surface. This indicates that the clay layer (number <br /> 2 above) forms a confining layer at the site. <br /> RESULTS SOIL SAMPLES <br /> Soil samples were chosen for analysis where elevated PID readings <br /> were encountered or at least at the 15 foot below surface level. <br /> Of the soil samples analyzed, only those from SB1 contained <br /> detectable amounts of hydrocarbons. The highest level encountered <br /> was in the fifteen foot depth sample (see Table 1, Figure 4) . <br /> RESULTS WATER SAMPLES <br /> During drilling, a water sample was collected from each of the soil <br /> borings. All of these samples were analyzed for TPHg and BTEX. Of <br /> these samples, hydrocarbons were detected in SB1, SB2 and SB4 (see <br /> table 1 and Figure 5) . The highest level was detected an SB1 which <br /> contained 12 , 000, 000 ppb TPHg. Traces of floating product were <br /> observed in this sample. <br /> CONCLUSIONS <br /> Of the soil samples analyzed, only those from SB1 contained <br /> detectable amounts of hydrocarbons. No soil contamination was <br /> detected in samples analyzed in the installation of the prior soil <br /> borings at this site. The presence of hydrocarbon contamination an <br /> the sample from SB1 most probably results from its close proximity <br /> to the old tank pit. Its location next to the fork lift shop <br /> precluded drilling a conformation boring further from the tank pit <br /> in that direction. <br /> The other soil borings provide a limit to the extent of soil <br /> contamination at the site. The soil contamination appears to be <br /> limited to the general proximity of the old tank (see Figure 4) . <br /> As indicated by the presence of hydrocarbons in the water samples <br /> and not in the soil samples from SB2 and SB4 , the dissolved <br /> hydrocarbon plume appears to extend further than the soil plume, <br /> but it is also outlined by the monitor wells and soil borings. <br /> 4 <br />