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1 <br /> 3.0 RESULTS OF THE INVESTIGATION <br /> 3.1 Geology and Hydrogeology <br />' Soils - v I f and fine sand <br /> observed during the drilling of MW 3 consisted of massive intervals o clay, silt <br />' mixtures to the total drilling depth of approximately 55 feet The groundwater-bearing interval is a <br /> fine sandy silt soil approximately 10 feet thick Detailed sod descriptions are included on the <br /> monitoring well log for MW-3 (Appendix C) <br />' Duringthe drilling of MW-3 on November 29 2001 saturated sod and groundwater were first <br /> 9 � <br />' encountered at approximately 46 0 feet bgs On December 6, 2001, the static depth to the <br /> groundwater table at MW-3 was 45 50 feet bgs As such, groundwater does not appear to be <br /> present under confining conditions Groundwater recharge was observed to be moderately <br />' strong <br />' On December 6, 2001, the depth to static groundwater across the site ranged from 45 50 feet bgs <br /> in MW-3 to 46 91 feet bgs in MW-1 The corresponding groundwater surface elevation ranged <br /> from a high of 26 86 feet below mean sea level (msl) at MW-3 to a low of 27 70 feet below msl at <br /> lie MW-1 The resulting groundwater surface appears as a regular plane dipping to the south at a <br /> gradient of approximately 0 0054 foot/foot A groundwater surface contour map is included as <br />' Figure 3 The well construction details, wellhead elevations and groundwater monitoring data are <br /> summarized in Table 2 <br />' 3.2 Soil and Groundwater Analytical Results <br />' The three soil samples collected from the boring for MW-3 did not contain detectable <br /> concentrations of any of the gasoline compounds analyzed These soil sample results are <br /> summarized in Table 1 and the laboratory reports are included in Appendix D <br /> I <br /> The groundwater samples collected from MW-2 and MW-3 contained detectable concentrations <br />' of TPH-as-gasoline, BTEX compounds and MTBE Monitoring well MW-1 was not sampled due <br /> to the presence of free product The sample collected from the pressure tank of the municipal <br /> irrigation well did not contain detectable concentrations of any of the gasoline compounds <br />' analyzed These groundwater sample results are summarized in Table 3 and the laboratory <br /> reports are also included in Appendix D <br />' 10 <br />