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i I07 September 2005 . AGE-NC Project No 97-0249 Page 6 of 8 I for the domestic water well sample are summarized in Table 5 Analytical ground water data for the Flag City Chevron's monitoring events are included in Appendix A The laboratory reports (MAI Work Orders 0503553,0503558 and 0504001),quality assurance/quality control(QA/QC)reports I and chain of custody forms are presented in Appendix C , GeoTracker confirmation pages of the submitted laboratory electronic deliverable format (EDF) files are Included in Appendix D 4.0. SUMMARY AND CONCLUSIONS IThe implications from the March 2005 ground water monitoring event are as follows • Generally, depth to ground water at the site varied between 7 feet and 10 feet bsg, ground water elevations ranged between 1 63 feet(MW-l OF)and 2 40 feet(MW-5)above mean sea level • Ground water data collected from Hydrogeologic Units 1 through 6 at both the Three B's Truck Plaza and the Flag City Chevron site's generally inferred a net ground water flow direction towards the east-northeast and southeast (Figures 4 through 7) • The most intense TPH-g-impacted ground water was reported from Hydrogeologic Unit 1 in the area of wells MW-1,MW-2,MW-3, MW-6 and MW-8A, at concentrations as high as 47,000 µg/1 (Figure 8) • The most Intense TPH-d-impacted ground water was reported from Hydrogeologic Unit 1 in the area of wells MW-1, MW-3 and MW-8A at a concentration as high as 5,000 µg/1 (Figure 9),an isolated TPH-d occurrence was reported at Flag City Chevron well MW-12A, approximately 200 feet southeast of the site • The most intense,on-site Hydrogeologic Unit 1 MTBE-impacted ground water was reported from the area of Three B's Truck Plaza wells MW-1 and MW-4 at concentrations as high as 28 µg/1 and from Flag City Chevron well MW-16 at a concentration of 47 µg/l (Figure 10) i • The most intense on-site,Hydrogeologic Unit 2 MTBE-impacted ground water was reported from the area of Three B's Truck Plaza well MW-1 OB at a concentration of 17µg/l,and from ' Flag City Chevron well MW-17 at a concentration of 97 µg/l (Figure 11) • The most intense on-site,Hydrogeologic Unit 3 MTBE-Impacted ground water was reported from the area of Flag City Chevron wells MW-I IB, MW-15 and MW-18 at concentrations ' as high as 140 µg/l (Appendix A) • The highest off-site concentrations of dissolved MTBE were detected in monitoring wells ' toward the east and northeast, in water samples collected from Flag City Chevron wells MW-8A (400 µg11, Hydrologic Unit 2), MW-19A (240 µg/l, Hydrologic Unit 1) and MW-20A (440 µg11, Hydrologic Unit 1) Off-site, MTBE-impacted ground water from IAdvancer!GeoEnnronmental,Inc