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1 <br /> that the local groundwater gradient flowed in a northeasterly <br /> direction <br /> 5.0 GROUNDWATER SAMPLING <br />' Groundwater samples were collected on October 25 , 2000 . Depth- <br /> to-groundwater was measured using an electric water level meter <br /> prior to groundwater sampling activities . Groundwater sampling <br /> 1 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 (Table 3) The wells were <br />' bailed near-continuously until all stagnant water was 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 /> The elevation of the groundwater surface (potent.iometric 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 /> -5 .32 feet (MW-2) to -5 37 feet (MW-3 ) above mean sea level . <br />' Mapping and analysis of the groundwater elevation data suggest <br /> that the local groundwater gradient flows in a northeasterly <br /> direction. The top of well casing elevations, depth-to-- <br /> 3 <br /> 1 <br />