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Former Manna Pro Site Page 6 <br /> Quarterly Groundwater Monitoring Report <br />' Project No 207 2 <br /> February 11, 2003 <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 over 1 foot since the last monitoring event in <br /> September A slight local groundwater anomaly in the vicinity OB-5 is evident <br /> as has often been the case in the past <br />' The analytic data suggest that contaminant levels are in the low to middle <br /> range of historical norms <br /> 1 <br /> 3.2 Future Work Schedule <br /> The first phase vapor extraction / air <br /> sparge remedial system has been <br /> completed and operated for 90 days A report of this work and the results was <br /> issued on June 18, 2002 Based on the results of the first phase corrective <br /> action program, an addendum to the Corrective Action Plan was prepared on <br /> August 12, 2002 and submitted to the San Joaquin County Environmental <br /> Health Department The addendum was approved on October 22, 2002 The <br /> budget covering the anticipated costs of the work is being prepared and was <br /> submitted to the California UST Clean-up fund for pre-approval on December <br /> 10, 2002 The pre-approval is still pending <br /> 1 <br /> r <br /> r <br /> I <br /> • <br /> r2937 Veneman Ave ,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0293 <br /> r <br />