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1 <br /> 08 March 1999 <br /> AGE-NC Project No 95-0130 <br /> Page 3 of 5 <br />' general ground water gradient at the site was calculated to be approximately 0 004 ft/ft or <br /> approximately 21 feet per mile and directed towards the northeast In the area containing MW-1, <br />' MW-3 and MW-5, ground water flow direction was directed east in the area containing wells MW-1, <br /> MW-2 and MW-4 <br />' Based on the ground water morutonng data collected on 22 December 1998, ground water elevation <br /> in the area between VW-I C, VW-2A and VW-3A appears to have a westerly gradient Due to <br /> anomalous measurements, ground water elevations calculated from VW-IC, V W-2A and VW-3A <br />' were not utilized to contour ground water elevations in Figure 3 <br />' 32 LABORATORY RESULTS OF GROUND WATER SAMPLES <br />' During the December 1998 sampling event, TPH-g was detected in water samples collected from <br /> MW-2,MW-5, VW-I C,VW-2A and VW-3A at concentrations ranging between 83 micrograms per <br /> liter(ug/l) and 300,000 ,ug/1, respectively <br /> Various BTE&X compounds were detected in water samples collected from MW-1, MW-2, MW-5, <br /> VW-I C, VW-2A and VW-3A at concentrations ranging between 0 6 Mcg/1 and 49,000 ,ug/l (benzene <br /> and toluene, VW-I C) <br /> MTBE was confirmed in water samples collected from MW-2,MW-3,VW-1 C,VW-2A and VW-3A <br /> at concentrations ranging between 14µg/l and 3,200 ,ug/I <br /> TBA was detected in water samples collected from MW-5 at concentrations of 130 Pg/1 No other <br /> fuel oxygenating compounds were detected from analyzed water samples <br /> Analytical results of the ground water samples are summarized In Table 2 The laboratory reports <br /> (Castle Analytical Laboratory Reference No 1929 and McCampbell Analytical Inc I D No 01047 <br /> through 01054) and chain-of-custody forms are presented in Appendix B <br /> 4.0. DISCUSSION AND CONCLUSIONS <br /> Based upon data collected during the December 1998 monitoring event, AGE concludes <br /> • Ground water was inferred to be flowing toward the northeast in the area containing wells <br /> MW-1, MW-3 and MW-5 and flowing toward the east in the area containing wells MW-1, <br /> MW-2 and MW-4 at a calculated gradient of 0 004 ft/ft, or approximately 21 feet per mile <br /> (Figure 3) Due to the low gradient at the site, slight vanatlons in ground water <br /> IAdvanced GeoEm ironmentel,Inc <br />