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25 March 2005 <br /> AGE-NC Project No 97-0311 <br /> Page 2 of 3 <br /> following constituents: <br /> • Volatile organic compounds (VOCs) and fuel additives in accordance with EPA Method <br /> 8260 Modified. <br /> 3.0. FINDINGS <br /> Ground water elevations were determined by subtracting the measured depths to water from the <br /> surveyed casing elevations.Ground water flow directions were determined by contouring the water <br /> elevations on a scaled site plan. Laboratory analysis of water samples were utilized to assess any <br /> solvent-impact to ground water. <br /> 3.1. GROUND WATER ELEVATION AND GRADIENT <br /> The elevation of ground water in each monitoring well at the time of the monitoring event was <br /> calculated by subtracting the depth to ground water from the surveyed casing elevation; current <br /> ground water elevation results are provided in Table 1. <br /> The measured depth to ground water in monitoring wells MW-1 through MW-4 ranged between <br /> 47.50 and 47.83 feet below the top of the casing(btoc).The ground water elevations were calculated <br /> to be between 1.3 feet (MW-3) and 1.59 feet (MW-1) above mean sea level (MSL). The ground <br /> water elevation increased 1.2 feet since the November 2004 sampling event. <br /> At the time of the March 2005 monitoring event, the potentiometric surface was inferred to be <br /> flowing south to southwest in the area bounded by the monitoring wells (Figure 3) at a gradient of <br /> approximately 0.0024 ft/ft. <br /> 3.2. ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> Four ground water samples were analyzed by CTEL for the chemical constituents referenced in <br /> Section 2.L.No VOCs,solvents,fuel additives or components were detected at or above laboratory <br /> reporting limits. <br /> The analytical results of ground water samples are summarized in the laboratory report CTEL Proj ect <br /> No. CT214-050376, with quality assurance and quality control (QA/QC) reports and chain of <br /> custody forms included in Appendix C. <br /> Advanced GeoEnvironmental,Inc. <br />