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2.0 GROUNDWATER MONITORING, SAMPLING AND ANALYSIS <br /> On June 2, 2004, to comply with quarterly groundwater monitoring requirements and to evaluate <br /> the effectiveness of groundwater extraction efforts, Ramage Environmental monitored and <br /> sampled 10 of the 11 monitoring wells, and collected groundwater samples from the nearby <br /> cemetery irrigation well #2 Monitoring well MW-1 was not monitored or sampled, due to <br /> ' damage to the wellhead and an obstruction downhole <br /> 2.1 Groundwater Monitoring <br /> Depth-to-groundwater measurements were taken in all ten of the accessible groundwater <br /> monitoring wells to evaluate groundwater flow and gradient characteristics The cumulative <br /> groundwater monitoring data are summarized in Table 1 <br /> The depth-to-groundwater beneath the site ranged from 44 31 feet below ground surface (bgs) <br /> at MW-4 to 47 87 feet bgs at MW-7 MW-7 is the only well completed above-grade and <br /> protected with a monument casing The groundwater elevation beneath the site ranged from a <br /> Mhigh of 27 42 feet below mean sea level (MSL) at MW-2 to a low of 27 99 feet below MSL at <br /> MW-813 <br /> groundwater surface maps are included for the shallow-constructed wells (Figure 4 <br /> Separate grow p ( 9 ) <br /> and the deep-constructed wells (Figure 5) Using the shallow-constructed wells, the <br /> groundwater surface appears as a regular plane dipping toward the northeast at a gradient of <br /> 0 00108 footlfoot Using the deep-constructed wells, the groundwater surface appears as an <br /> ' irregular plane dipping toward the northeast at a gradient of 0 00253 foot/foot The groundwater <br /> surface configurations are generally consistent with historical groundwater gradients and flow <br /> directions <br /> 22 Groundwater Sampling and Analysis <br /> Groundwater was sampled from eight monitoring wells (MW-2, MW-3, MW-4, MW-5, MW-6, <br /> MW-7, MW-8A, and MW-813), two deep soil vapor extraction wells (VW-1 and VW-2), and <br /> Irrigation Well#2 Each of the monitoring wells and deep soil vapor extraction wells was purged <br /> of at least three well volumes using a pump and disposable tubing Following purging and <br /> recharge, groundwater samples were collected from the wells using dedicated and disposable - <br /> sampling bailers Irrigation Well#2 was allowed to flow at the wellhead until the downhole pump <br /> was automatically activated A groundwater sample was collected directly at the wellhead <br /> rthrough a sample port <br /> 5 <br />