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Former Manna Pro Site Page 6 <br /> Quarterly Groundwater Monitoring Report <br /> Project No 207 2 <br /> February 6, 2004 <br />' 3.0 DISCUSSION <br />' 3.1 Discussion of Data <br /> Field and analytical data results are summarized in Summary Table 1 and <br /> illustrated in Figures 3 through 5 <br /> The map of groundwater gradient (Figure 3) suggests that the flow direction <br /> and gradient of groundwater is consistent with historical measurements <br />' The water table has risen slightly feet since the last monitoring event in <br /> September <br /> 1 The analytic data suggest that contaminant levels are in the low range of <br /> historical norms Laboratory analytical data also suggest that the vapor <br /> extraction / sparge system operation may have resulted in a substantial <br />' decrease in gasoline contamination in MW-6 <br /> r3.2 Future Work Schedule <br /> 1 Quarterly groundwater monitoring will continue The second phase of the <br /> vapor extraction 1 air sparge remedial system is now in operation and will <br /> continue in operation for the foreseeable future Periodic reports on the <br />' operation and performance of the system will be issued <br /> 1 <br /> 1 <br /> 1 2937 Veneman Ave ,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br /> 1 <br />