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' 2.0 GROUNDWATER MONITORING, SAMPLING AND ANALYSIS ' On March 28, 2002, to comply with quarterly groundwater monitoring requirements and to evaluate the stability of the plume of impacted groundwater, Ramage Environmental monitored ' and sampled 9 of the 11 monitoring wells, and collected a groundwater sample from the nearby cemetery irrigation well #2 Monitoring well MW-1 was not monitored or sampled due to damage at the wellhead, and MW-2 was buried under soil ' 21 Groundwater Monitoring Depth-to-groundwater measurements were taken in all nine of the groundwater monitoring wells to evaluate groundwater flow and gradient characteristics ' In the nine wells monitored, the depth-to-groundwater beneath the site ranged from 39 98 feet below ground surface (bgs) in MW-4 to 43 67 feet bgs in MW-7 MW-7 is the only well ' completed above-grade and protected with a monument casing The groundwater elevation beneath the site ranged from a high of 23 25 feet below mean sea level (MSL) in VW-1 to a low ' of 23 63 feet below MSL in MW-813 The cumulative groundwater monitoring data are summarized in Table 1 Separate groundwater surface maps are included for the shallow-constructed wells (Figure 4) and the deep-constructed wells (Figure 5) Using the shallow-constructed wells, the ' groundwater gradient is approximately 0 0012 foot/foot in a northeasterly direction Using the deep-constructed wells, the groundwater gradient is approximately 0 0015 foot/foot in a northeasterly direction These groundwater surface configurations are consistent with historical ' groundwater gradients and flow directions 22 Groundwater Sampling and Analysis Groundwater was sampled from five monitoring wells (MW-3 through MW-7), the two-well ' monitoring well cluster (MW-8A and MW-813), the two deep soil vapor extraction wells (VW-1 and VW-2), and Irrigation Well#2 Each of the monitoring wells and deep soil vapor extraction wells was purged of at least three well volumes using a pump and disposable tubing Following purging and recharge, groundwater samples were collected from the wells using dedicated and disposable sampling bailers Irrigation Well #2 was allowed to flow at the wellhead until the downhole pump was automatically activated A groundwater sample was collected directly at the wellhead through a sample port 5