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I <br /> lie 28 February 2005 <br /> AGE-NC Project No 97-0326 <br />' Page 3 of 6 <br />' 3.0. FINDINGS <br /> Ground water elevation and flow direction were determined from field data Hydrocarbon impact <br />' to ground water was quantified by laboratory analysis of ground water samples <br />' 3 1 GROUND WATER GRADIENT AND FLOW DIRECTION <br /> At the time of the December 2004 sampling event, depths to ground water ranged from 36 77 feet <br />' to 39 13 feet below the tops of the well casings The depth to ground water (37 95 feet) at well <br /> MW-I was affected by the presence of approximately 0 15 inches of free product, so the depth was <br /> recalculated (37 84 feet) utilizing the measured thickness of free product in well MW-1 <br />' Dw= Dm - (tg * d�dw) <br />' DH,= Corrected depth to water <br /> Dm = Measured depth to water <br /> tg= Total thickness of free product (-0 15 foot) <br />' dg= Density of free product (gasoline at—0 75 g/ml) <br /> du,= Density of water (-10 gm/ml) <br />' The elevation of ground water in each well was calculated by subtracting the depth to ground water <br /> from the casing elevations Ground water elevations ranged from 23 26 feet (MW-2) to 24 01 feet <br /> (MW-9D) below mean sea level (MSL) <br /> First-encountered ground water was within the screen interval of wells MW-1 through MW-3, <br />' MW-7, MW-8A and MW-9A, these wells should yield samples representative of shallow ground <br /> water conditions (Table 1), ground water from deep-screened wells MW-8[B-D] and MW-9[B-D] <br /> should yield samples representative of deeper ground water conditions <br />' A ground water elevation map of first-encountered ground water is presented in Figure 3 First- <br /> encountered ground water was inferred to be flowing toward the south-southeast,hydraulic gradients <br />' ranged between 0 003 foot/foot(ft/ft)in the area between wells MW-1 through MW-3 and 0 03 ft/ft <br /> south of wells MW-1 and MW-3 The flow direction is consistent with previous monitoring events <br />' 32 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> Eleven ground water samples were collected and submitted for laboratory analysis for the <br /> constituents listed in Section 2 2 (Table 2), a ground water sample was not collected from well <br />' Advanced GeoEnvironmental Inc <br /> 1 <br />