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• (Appendix B) and are shown in Table 1 After water depths were measured, a battery-operated bladder pump was used to purge the wells of standing water The wells were purged until conductivity and temperature stabilized or until the wells went dry(Appendix B) As in the past,the water purged from VM-2 was the color of "gray water", and a sewer odor was present Purged water was stored in a DOT-approved drum in the southwest corner of the site After purging, samples were collected from each well Two 40-m1 vials were collected from each, labeled, and placed in a cooled ice chest The samples were later transported to Excelchem Environmental Laboratory for analysis The laboratory report is included in Appendix C 4.0 RESULTS 4.1 Depth to Groundwater and Groundwater Gradient The depth to groundwater on December 8 averaged 32 feet(Table 1), which is exactly what it was on September 28 At this depth, the water level is at or slightly below the contact between the aquifer sand and the underlying clay bed The water level is still 13 feet above the screened interval in VM-1, VM-2, and VM-3, and 3 5 feet over the screen in VM-4 No water was present in VT-1 or in SW-1 (the bottom of the screened interval in this well is 31 5 feet) Figure 3 illustrates the groundwater gradient and general direction of groundwater flow The water table slopes to the east or northeast at a gradient of 0 0028 ft/ft 4.2 Analytical Results Total Petroleum Hydrocarbon and BTEX concentrations decreased sharply in all wells during the quarter(Table 2) Declines of more than 50% occurred in VM-2, and concentrations in VM-3 are again below the detection limit after being slightly above it since October of 1999 Only benzene was detected in VM-4, whereas TPH-g and all BTEX compounds have generally been present in the past Hence, concentrations declined throughout the site area during the quarter 5.0 CONCLUSIONS AND RECOMMENDATIONS Groundwater quality improved during the quarter at the Valley Motors site It is too soon to tell whether this is a long-term trend or merely a transitory improvement, so we recommend continuing to monitor groundwater conditions on a quarterly basis The next monitoring event should take place in late February or early March If the four off-site wells can be drilled before that time, they will be included in the first-quarter monitoring event In previous quarterly reports, we have recommended conducting a soil-vapor-extraction/air- sparging pilot test when groundwater conditions are favorable During much of the year 2000, the static water level was at or below the bottom of the sparging test well (SW-1), making conditions 3