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• A S S O C I A T E S I N C <br /> CvvATC <br /> The groundwater analytical results measured at monitoring well MW2 showed a detectable <br /> concentration of TPHg of 180 µg/L BTEX constituents were not detected <br /> The groundwater analytical results measured at monitoring well MW3 showed a detectable <br /> concentration of TPHg of 290 µg/L BTEX constituents were not detected <br /> The Maximum Contaminant Level (MCL) for benzene, 1 µg/L, was exceeded in a groundwater <br /> sample collected from monitoring well MW1 which had a detected concentration of 13 µg/L <br /> GROUNDWATER FLOW DIRECTION <br /> Water level measurements were collected from monitoring wells MW1, MW2, and MW3 on <br /> June 4, 2003 Water level elevations ranged from 37 91 to 37 97, representing an average <br /> decrease in water table elevation of approximately 0 41 feet since March 2003 The water level <br /> data were used to develop the groundwater elevation contour map (Figure 3) Assuming that <br /> horizontal isotropic conditions prevail, groundwater in the uppermost aquifer beneath the site <br /> flowed towards the northwest The average hydraulic gradient on June 4, 2003 was calculated to <br /> be 0 0006 or approximately 3 ft/mile A summary of groundwater monitoring data is presented <br /> In Table 1 <br /> • CONCLUSIONS <br /> Groundwater flow direction and gradient is consistent with previous sampling events Water <br /> table elevations have decreased since the March 2003 monitoring event Groundwater analytical <br /> results remained within historical parameters as set by previous groundwater analytical results <br /> s Ienvironmental\1498 Meportsl2QR-03 doc 3 <br />