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1 <br /> Mapping and analysis of the groundwater elevation data suggested <br /> that the local groundwater gradient flowed in a northeasterly <br /> direction. <br /> 5.0 GROUNDWATER SAMPLING <br />' Groundwater samples were collected on January 29, 2001 . Depth- <br /> to-groundwater was measured using an electric water level meter <br />' prior to groundwater sampling activities Groundwater sampling <br /> involved bailing approximately three well casing volumes of water <br /> out of the wells prior to sampling. Parameters such as water <br /> clarity, pH, temperature, specific conductance, and volume <br />' extracted were measured during purging (Appendix B) . The wells <br /> were bailed near-continuously until all stagnant water was <br /> removed. <br /> Groundwater samples were collected manually (hand-bailed) using a <br /> Teflon bailer from each monitoring well . The samples were <br /> ' transferred into 40-m1 VOA vials and 1-liter amber-colored glass <br /> bottles with a Teflon septa The samples were stored in a <br /> chilled cooler containing crushed ice to maintain the sample at <br /> 4°C for delivery to the laboratory. Strict chain--of-custody <br /> protocols were followed in all phases of sample handling. <br /> All equipment used during the sampling activities which came in <br /> ' contact with contaminated material were thoroughly decontaminated <br /> before and after each use This was accomplished by washing with <br /> Alconox (a laboratory-grade detergent) and rinsing with distilled <br /> ' water. <br /> 6.0 GROUNDWATER ELEVATION AND FLOW <br /> iThe elevation of the groundwater surface (potentiometric surface) <br /> was measured for each monitoring well to evaluate the direction <br /> of groundwater flow at the Site. Groundwater level measurements <br /> were recorded using an electronic water-level probe attached to <br /> an engineer' s measuring tape graduated to 0 . 01-foot intervals <br /> ' Measurements were recorded from the top of the groundwater <br /> surface to the top of the well casing. The difference between <br /> the top of the well casing elevation and the depth to the top of <br /> ' the groundwater surface is a measurement of the potentiometric <br /> surface of the groundwater table <br /> ' Measured depth to groundwater levels at the Site ranged from <br /> -4 84 feet (MW-2) to -4 96 feet (MW-3 ) above mean sea level <br /> Mapping and analysis of the groundwater elevation data suggest <br /> 3 <br />