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09 July 2001 . AGE-NC Protect No 97-0249 Page 4 of 6 I sample collected from well MW-1 at a concentration of 29 4g/l No other fuel oxygenated compounds were detected in any other ground water samples Laboratory analysis of samples collected from domestic drinking water wells DW-1 and RDW-1 did not detect any constituents of concern above laboratory reporting limits Previous and current analytical results of ground water monitoring well samples are summarized in Tables 2 and 3, analytical results of the ground water samples collected from the domestic drinking water wells DW-1 and RDW-1 are summarized in Table 4 The laboratory reports (McCampbell Analytical Inc I D No 69745 through 69750) and chain-of-custody forms are presented in Appendix C ' 4 0. SUMMARY AND CONCLUSIONS The implications from the June 2001 ground water monitoring event are as follows • Ground water flow direction for the area bound by Three B's Truck Plaza wells MW-1 through MW-6 and Flag City Chevron wells MW-7, MW-12A and MW-13A was generally toward the southwest at a gradient of 0 003 ft/ft, or approximately 16 feet per mile and less (Figure 3), due to the low gradient at the site, slight van ations in ground water measurements or changes of recharge/discharge of the local ground water could greatly modify ground water flow direction I Ground water flow direction at the site may have been influenced by pumping of the Three B's Truck Plaza domestic drinking water well • The ground water elevation at the site was within the screened intervals of wells MW-1 through MW-6 which should yield samples fully representative of shallow ground water conditions (First Water Zone) • Ground water elevation at the site decreased an average 4 14 feet from the March 2001 ground water monitoring event to the June 2001 ground water monitoring event, the decrease of ground water elevation is probably due to seasonal fluctuation (Table 1) • The lateral extent of the dissolved petroleum hydrocarbon plume is not known toward the south, southwest, west, northwest, north and northeast of the area bound by wells MW-1 through MW-6, the vertical extent on the site is not known (Figures 4, 5 and 6) • The elevated petroleum hydrocarbon concentrations detected in water samples collected from wells MW-1, MW-2, MW-3 (screened between 5 and 25 feet bsg) suggest that these wells . may be screened within or near a "core area" of a dissolved petroleum hydrocarbon plume However, the area of greatest dissolved petroleum hydrocarbon-impact was observed in the Advanced GeoEnvironmental,Inc