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U-Haul#709-50 <br /> Additional Site Charactenzation Blaes Envrraninenral <br /> • Groundwater collected from MW-2a did not contain detectable concentrations of TPHg, toluene, <br /> or ethylbenzene Analysis indicated concentrations of benzene at 5 5 pg/L and total xylenes at <br /> 1 9 pg/L These results nearly define the probable western extent the hydrocarbons plume <br /> • Groundwater collected from MW-8a contained hydrocarbons at concentrations greater than <br /> ' those in groundwater from MW-2a <br /> ' • Groundwater collected from MW-9a, located approximately 30 west of the hydro-punch sample <br /> point, contained detectable hydrocarbons Analysis indicated concentrations of TPHg at 570 <br /> gg/L and benzene at 49 µg/L <br /> 1 <br /> Concentrations of TPHg and benzene at each monitoring well have be plotted on Figure 9 to illustrate the <br />' extent of hydrocarbons in groundwater Based on this figure the release area is defined by monitoring <br /> well MW-3a and MW-4b to be the eastern portion of the site near the former dispenser islands This <br />' figure also indicates that the majority of groundwater impact appears to remain on site <br /> 1 <br /> 19 <br />