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_ s 16 January 2006 . AGE-NC Project No 97-0312 Page 3 of 4, 4 ` (UST-4) and 36 74 feet(UST-6) below mean sea level (MSL),the average ground water elevation iat the site during the first quarter 2005 was 36 47 feet below MSL, an increase of 5 8 feet since the November 2004 monitoring event The ground water table occurred within the screened intervals of monitoring wells UST-2 through UST-6 Monitoring well,UST-7 was designed to monitor deeper - ground water, with a 5-foot screened interval set at approximately 22 feet below the water table, since it is possibly monitoring a different hydraulic zone,UST-7 was not used to determine gradient and flow direction The ground water flow direction during first quarter 2005 was radially inwards towards a northerly trending trough in the potentiometric surface (Figure 3), net ground water flow is inferred to be towards the north at low hydraulic gradients of 0 003 foot/foot (ft/ft) or less The Cherokee Truck Stop monitoring data was combined with monitoring data collected from the adjacent Moore Truck Lines property to determine an approximate regional ground water flow direction towards the north-northeast(Figure 3) I 32 ANALYTICAL RESULTS OF GROUND WATER SAMPLES • No target analytes were detected at or above laboratory reporting limits in the ground water samples collected this quarter The laboratory report (CTEL Project No CT214-0503166), quality Iassurance/quality control (QA/QC)report, and chain of custody forms are included in Appendix B Analytical results of water samples collected during the first quarter 2005 are summarized in Table 2 The analytical results of historical water samples are summarized in Tables 3 and 4 Documents confirming the upload of laboratory electronic deliverable format (EDF) files and depth to water measurements to GeoTracker are included in Appendix C I 4.0. DISCUSSION AND CONCLUSIONS ' Based upon data collected from the site, AGE concludes ' Groundwater elevation increased approximately 5 8 feet at the site since the November 2004 monitoring event The inferred ground water flow direction was generally toward the north at hydraulic gradients of 0 003 ft/ft or less ' During the March 2005 monitoring event, no target analytes were detected at or above laboratory'reporting limits in the ground water samples collected ' The reported concentrations and lateral extent of analytes of concern have remained • relatively stable during the past three years of monitoring Based on the analytical results of ' Advanced GeoEnvironmental,Inc I