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.; 23 December 2003 <br /> ' AGE-NC Project No 95-0104 <br /> Page 3 of 4 <br /> ' concentrations of 1 5 µg11, 18 µg/1, 9 4 µg/1 and 5 1 µg11,respectively TPH-g,BTEX and other fuel <br /> additives were not detected at or above laboratory reporting limits in the ground water samples <br /> collected from the site Analytical results of the ground water samples are summarized in Table 2 <br /> The laboratory reports MAI Work Order Number 0303082)and chain-of-custody form are presented <br /> in Appendix B <br /> 4.0. DISCUSSION AND CONCLUSIONS <br /> Based on data collected during the March 2003 sampling event, AGE concludes <br />' • The ground water flow direction on 06 March 2003 was inferred to be towards the northeast <br /> under an average gradient of 0 004 feet/feet <br />' • 1,2-DCA was detected in the water samples collected from MW-1,MW-5,MW-6 and VW-1 <br /> at concentrations ranging from 1 5 µg/1(MW-1)to 18 µg/l(MW-5) TPH-g,BTEX and other <br /> fuel additives were not detected at or above laboratory reporting limits in the ground water <br /> samples collected from the site <br /> • Concentrations of 1,2-DCA have either decreased slightly or remained stable in samples <br /> from wells MW-1, MW-5, MW-6 and VW-1 Figure 4 illustrates the approximate extent of <br /> 1,2-DCA-impacted ground water The lateral extent of 1,2-DCA impacted ground water has <br /> been generally defined, except east of well MW-5 with the highest concentrations of <br />' 1,2-DCA The vertical extent has been defined, by monitoring well MW-2 through MW-4 <br />' 5.0. RECOMMENDATIONS <br /> Based on the findings of this investigation,AGE recommends the site be considered for closure At <br />' this time quarterly ground water monitoring should continue, until otherwise directed <br />' 6.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based upon <br /> analytical results provided by an independent laboratory Evaluations of the geologic/hydrogeologic <br /> conditions at the site for the purpose of this investigation are made from a limited number of <br /> available data points (i e ground water samples) and subsurface conditions may vary away from <br /> Advanced Geo Environmental,Inc <br />