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28 March 2002 <br /> iAGE-NC Project No 95-0104 <br />' Page 3 of 3 <br />' concentrations ranging from 1 5 µg/1 to 77 µg11 BTEX and other fuel additives were not detected <br /> at or above laboratory reporting limits In the groundwater samples collected from the site Analytical <br /> results of the groundwater samples are summarized in Table 2 The laboratory reports(McCampbell <br />' Analytical Inc Lab I D No 89342 through 89348) and chain-of-custody form are presented in <br /> Appendix B <br /> 4.0. DISCUSSION AND CONCLUSIONS <br /> Based on data collected during the January 2002 sampling event, AGE concludes <br /> • The ground water flow direction is Inferred to vary towards the east to the northeast under <br />' a gradient varying from 0 002 to 0 003 feet/feet Figure 3 Illustrates the contoured ground <br /> water elevations <br /> • TPH-g was detected in well MW-1 just above laboratory reporting limits 1,2-DCA was <br /> detected in all four shallow-screened monitoring wells at concentrations as high as 77 µg/1 <br /> Figure 4 illustrates the approximate extent of 1,2-DCA-Impacted ground water <br />� i <br /> 5 0. RECOMMENDATIONS <br /> Based on the findings of this investigation,AGE recommends the shallow-screened monitoring wells <br /> (VW-1, MW-1, MW-5 and MW-6) be monitored and sampled for at least two additional quarters <br /> to monitor the concentrations of 1,2-DCA-impacted groundwater The next monitoring event should <br /> be scheduled for June 2002 <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 /> I 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 /> these data points No other warranty, expressed or Implied, is made as to the professional <br /> recommendations contained in this report <br /> Advanced GeoEnvironmental,Inc <br />