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' Bank of Stockton - Cutter Lumber Site Page 6 <br /> Quarterly Groundwater Monitoring Report <br />' Project No 102 2 <br /> • July 5,2001 <br />' 3.0 DISCUSSION <br />' 3.1 Discussion of Data <br /> Field and analytical data results are summarized 1n Tables 1 and 2 and <br /> illustrated in Figures 3 through 5 <br />' The map of groundwater gradient (Figure 3) suggests that the flow of <br /> groundwater is to the northeast The water table has fallen about 15 feet since <br /> the last monitoring event in March of 2001 The direction and gradient of flow <br />' have remained generally consistent over the entire time the wells have been <br /> monitored <br /> i <br />' In general, the analytic data suggest that contaminant levels are gradually <br /> decreasing except in the area of MW-SB and MW-7, near the core of the plume <br /> It appears that the lateral extent of the contaminant plume may also be <br />' gradually decreasing The wells MW-10 and MW-11, at the distal periphery of <br /> the plume have been producing samples with essentially non-detectible levels to <br /> petroleum contaminants <br /> 3.2 Future Work Schedule <br /> Quarterly groundwater monitoring and sampling should continue We are <br /> anticipating the PHS-EHD will issue a directive to conduct vapor extraction <br />' pilot testing work in the near future <br /> 1 <br /> 1 <br />' 2937 Veneman Ave,#B240 Geo-Phase Environmental Inc. Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br />