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. i <br /> 10 September 2004 <br /> . AGE-NC Project No 04-1129 <br /> 1 Page 6 of 7 <br /> ' 4.0. GROUNDWATER MONITORING EVENTS:FEBRUARY 2003 TO JANUARY 2004 <br /> Ground water monitonng 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 /> 5.0. WATER WELL RECEPTOR SURVEY <br /> A sensitive receptor survey is currently being completed for the site However, analytes of concern <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 is 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 ground water monitoring events,AGE concludes <br /> 1i <br /> • Depths to ground water from wells MW-1 through MW-3 were measured at between 33 48 s <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 groundwater samples collected from <br /> ' momtonng wells MW-1!:through MW-3 during the monitoring and sampling period <br />' Advanced GeoEnviranmental,Inc <br /> 1 ' <br /> 'i <br />