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5 <br /> 4 F t <br /> I23 July 2004 <br /> AGE-NC Project No 99-0624 <br />' Page 6 of 8 <br />' 3.0. FINDINGS <br /> Ground water elevation, flow direction, and gradient were determined from field data collected on <br />' 13 May 2004 The contaminant impact to soil and ground water was quantified,from the laboratory <br /> analytical data <br />' 31 STRATIGRAPHY <br />' In general,a brown to orange brown,damp silty sand to clayey silt and sand,were encountered from <br /> surface grade to depths of approximately 30 feet bsg in each boring Generally, a brown to gray, <br /> damp silty sand/fine sand was encountered from 30 feet to 40 feet bsg Pale brown to dark brown, <br />' very moist to saturated,silty fine sand or fine sand was encountered from depths of 45 feet to 65 feet <br /> bsg <br /> 1 <br /> 32 ANALYTICAL RESULTS OF SOIL SAMPLES <br /> I • No analytes were detected at or above laboratory detection limits in the soil samples analyzed <br /> Analytical results of soil samples are summarized on Table 4 The laboratory report (CTEL Project <br /> No CT214-0404168), quality assurance and quality control (QA/QC) report and chain-of-custody <br /> forms are included in Appendix D GeoTracker confirmation pages of the submitted laboratory <br /> electronic deliverable format (EDF) files are included in Appendix F <br /> 3 3 GROUND WATER GRADIENT AND DIRECTION <br /> At the time of the May 2004 sampling event,depths to ground water ranged from 53 45 feet to 53 91 <br /> feet below the tops of the well casings Ground water elevations at the site ranged from 15 12 feet <br /> below mean sea level (MSL) in well MW4 to 15 48 feet below MSL in well MW5 (Table 2) The <br /> ground water was inferred to be flowing towards the south-southwest The average ground water <br /> gradient was determined to be approximately 0 003 ft/ft Figure 3 illustrates the contoured ground <br /> water elevations as measured on 13 May 2004 <br /> During this monitoring event, the ground water levels in wells MW1 through MW6 were at least <br /> eight feet below the tops of the well screens, indicating that the wells are screened properly to yield <br /> representative shallow ground water samples The ground water elevation at the site decreased <br /> approximately 102 feet between the February and May 2004 monitoring events <br /> tAdvanced GeoEnvironmental,Inc <br />