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' Bank of Stockton- Cutter Lumber Site mage 6 Quarterly Groundwater Monitoring Report Project No 102 2 . November 12,2002 ' 3.0 DISCUSSION ' 3.1 Discussion of Data Field and analytical data results are summarized in Tables 1 and 2 and ' illustrated in Figures 3 through 5 The map of groundwater gradient (Figure 3) suggests that the flow of ' groundwater is to the northeast The water table has fallen about 3 feet since the last monitoring event in June of 2002 The direction and gradient of flow have remained generally consistent over the entire time the wells have been ' monitored ' In general, the analytic data suggest that contaminant levels are gradually decreasing except in the area of MW-SB and MW-7, near the core of the plume It appears that the lateral extent of the contaminant plume may also be ' gradually decreasing The wells MW-10 and MW-11, at the distal periphery of the plume have been producing samples with non-detectible levels to petroleum le contaminants I 3.2 Future Work Schedule IQuarterly groundwater monitoring and sampling should continue Sometime ago, Geo-Phase Environmental submitted a Work Plan that proposed pilot level remedial work to investigate possible methods to achieve an adequate level of 1 mitigation of this site The Work Plan was approved by the LOP agency, and on February 7, 2002 a detailed budget covering the work was submitted to the I State UST Clean-up Fund for pre-approval of the associated costs To date, the UST Clean-up Fund staff have not issued an approval of the costs We have recently been advised by the agency that the Pre-Approval request cannot be I found, and will need to be re-submitted I I • ' 2937 Veneman Ave ,#B240 Geo-Phase Environmental Inc Phone (209) 569-0293 Modesto, CA 95356 Fax (209) 569-0293 I