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I <br /> I10 September 2004 <br /> `. AGE-NC Project No 04-1129 <br />' Page 6 of 7 <br />' 4.0. GROUNDWATER MONITORING EVENTS:FEBRUARY 2003 TO JANUARY 2004 <br /> Ground water monitoring had been performed on wells MW-1 through MW-3 on a quarterly basis <br /> between February 2003 and January 2004 During that time, depths to ground water from wells <br /> MW-1 through MW-3 were measured between 33 48 and 36 68 feet below the top of well casings <br /> btoc Ground water flow direction at the site was generally toward the southeast with an average <br />' gradient of approximately 0 01 foot/foot (Figure 7) Ground water elevation data is summarized in <br /> Table 3 <br />' During the four ground water sampling events, analytes of concern were not detected at or above <br /> laboratory reporting limits in samples collected from wells MW-1 through MW-3 Analytical results <br /> of ground water samples are summarized in Table 2 <br /> 1 <br /> 5.0. WATER WELL RECEPTOR SURVEY <br />' A sensitive receptor is currently being completed for the site However, analytes of concern <br /> eP survey <br /> were not detected in ground water samples collected from the monitoring well network during the <br />' ground water investigation Therefore, AGE concludes that petroleum hydrocarbons remaining <br /> beneath the site, if any, appear to pose minimal risk to human health and beneficial use of ground <br />' water down-gradient from the subject site <br /> The nearest surface water feature in the vicinity of the property 1s the Old River, approximately 2 5 <br />' miles west of the property <br />' 6.0. DISCUSSION AND CONCLUSIONS <br /> Based on data collected during site assessment and groundwater monitoring events,AGE concludes <br /> 1 Depths to ground water from wells MW-1 through MW-3 were measured at between 33 48 <br /> and 36 68 feet btoc Ground water flow direction at the site was generally toward the <br />' southeast with an average gradient of approximately 0 01 foot/foot(Figure 7) Ground water <br /> elevation data are summarized on Table 3 <br />' • Relatively low concentrations of TPH-g and BTEX constituents were detected in a grab <br /> ground water sample collected from boring PB-2, located near the former UST area <br /> However, analytes of concern were not detected in ground water samples collected from <br />' monitoring wells MW-1 through MW-3 during the monitoring and sampling period <br /> 1 Advanced GeoEnvironmental,Inc <br /> 1 <br />