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(:V <br /> A S S O C I A T E S I N C <br /> The groundwater analytical results measured at monitoring well MW3 showed detectable <br /> concentrations of TPHg at 460 µg/L, benzene at 1 7 lig/L, toluene at 0 7 gg/L, ethylbenzene at <br /> 1 5 µg/L, and xylenes at 2 5 µg/L <br /> The Maximum Contaminant Level (MCL) for benzene, 1 pg/L, was exceeded at monitoring <br /> wells NMI, MW2, and MW3 which had detected concentrations of 34 pg/L., 19 µg/L and 17 <br /> pg/L, respectively <br /> GROUNDWATER FLOW DIRECTION <br /> Water level measurements were collected from monitoring wells MW 1, MW2, and MW3 on <br /> March 6, 2002 Water level elevations ranged from 37 57 to 37 60, representing an average <br /> increase in water table elevation of approximately 125 feet since December 2001 The water <br /> level data were used to develop the groundwater elevation contour map (Figure 3) Assuming <br /> that horizontal isotropic conditions prevail, groundwater in the uppermost aquifer beneath the <br /> site flowed towards the northeast The average hydraulic gradient on March 6, 2002 was <br /> calculated to be 0 0004 or approximately 2 ft/mile A summary of groundwater monitoring data <br /> is presented in Table 1 <br /> CONCLUSIONS <br /> • Groundwater flow direction and gradient is consistent with previous sampling events Water <br /> table elevations have increased slightly since the December 2001 monitoring event <br /> Groundwater analytical results remained within historical parameters as set by previous <br /> groundwater analytical results <br /> w\wordpro1149811Repor1sAQR-02 doc 3 <br />