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Figure 7 shows the current and historic benzene concentrations in soil between 40 and 50 <br /> foot depth The benzene contaminated soils located at Arc Pump show isolated low <br /> concentrations at sample points T2-2, T2-3, T3-1 and former monitor well MW4, with a <br /> high concentration at T3-3 which coincides with higher concentrations associated with <br /> Fernando's place wells MW1, MW2 and MW5 <br /> GROUNDWATER SAMPLES <br /> Seven water samples were obtained from the core borings, see Table 2 Figures were <br /> developed from groundwater samples obtained from the core borings and monitoring of <br /> wells associated with Fernando's Place for the months of February through April 2006 <br /> FIRST WATER BEARING ZONE <br /> Figure 8 shows the extent of the groundwater total petroleum hydrocarbon as gasoline <br /> plume from the first water bearing zone, 30 to 50 feet below the surface Two distinct <br /> plumes are shown The Fernando's Place plume is larger and contains higher <br /> concentrations compared to the Arc Pump plume <br /> Figujshows the extent of the groundwater Benzene plume from the first water bearing <br /> zone, 30 to 50 feet below the surface Two distinct plumes are shown but with <br /> connection at core hole T3-2 Again the Fernando's Place plume is larger and contains <br /> higher concentrations when compared to the Are Pump plume <br /> Figure 10 shows the extent of the groundwater MtBE plume from the first water bearing <br /> zone, 30 to 50 feet below the surface Only one plume is observed, Are Pump <br /> Fernando's Place tested below laboratory lower detection limits for MtBE <br /> SECOND WATER BEARING ZONE <br /> Figure 11 shows the extent of the groundwater total petroleum hydrocarbon as gasoline <br /> plume from the second water bearing zone, 78 to 92 feet below the surface There is no <br /> distinction between the Arc Pump and Fernando's Place plumes The highest <br /> concentrations are associated with Fernando's Place onsite wells which may indicate <br /> migration to the Are Pump location <br /> Figure 12 show the extent of the groundwater Benzene plume from the second water <br /> bearing zone, 78 to 92 feet below the surface Again, there is no distinction between the <br /> Are Pump and Fernando's Place plumes The highest concentrations are associated with <br /> Fernando's Place onsite wells with probable migration to the Are Pump location <br /> Figure 13 shows the absence of MtBE in the second water bearing zone, 78 to 92 feet <br /> below the surface <br /> 8 ARC Pump, ASSESSMENT 2006 <br />