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1 <br /> r17 January 2005 <br /> AGE-NC Project No 95-0103 <br /> Page 5 of 9 <br /> 16,000 gg/1 TPH-g, 520 µg11 benzene, 42 µg/1 toluene, 370 µg/1 ethylbenzene and 760 99/1 <br /> xylenes In addition, the fuel additive MTBE was detected by EPA Method 8020 in sample <br /> VW-6 at 2 9 µg/1 <br /> • March 2004 A water sample was collected from the influent port of the ground water <br /> extraction system TPH-g and BTEX compounds were detected in the influent sample at <br /> concentrations of 4,300 µg/1 TPH-g, 3 8 µg/1 benzene, 6 2 µg/1 toluene, 110 µg/1 <br /> ' ethylbenzene and 51 µg11 xylenes <br /> • April 2004 A water sample was collected from the influent port of the ground water <br /> extraction system TPH-g and the BTEX compound xylenes were detected at concentrations <br /> of 1,100 µg/1 and 21 gg/l, respectively In addition, the fuel additive DIPE was detected at <br /> a concentration of 8 8 µg/1 <br /> • May 2004 Grab ground water samples were collected from the four extraction wells during <br /> pumping Each ground water extraction sample had detectable TPH and BTEX compounds, <br /> with the exception of ethylbenzene at a concentration of 400 µg/1 in sample EW-1, the <br /> highest TPH and BTEX concentrations were detected in sample EW-3 at 11,000 gg/1 TPH-g, <br /> 330 µg/1 benzene, 18 µg/1 toluene and 790 gg/1 xylenes In addition,the fuel additive MTBE <br /> was detected by EPA Method 8020 in samples EW-2 and EW-3 at concentrations of 28 gg/1 <br /> and 130 µg/1, respectively <br /> • June 2004 Grab ground water samples were collected from the four extraction wells during <br /> pumping Each ground water extraction sample had detectable TPH and BTEX compounds, <br /> with the exception of ethylbenzene at a concentration of 560 µg/1 in sample EW-1, the <br /> ' highest TPH and BTEX concentrations were detected in sample EW-3 at 8,300 gg/1 TPH-g, <br /> 260 µg/1 benzene,44µg/1 toluene and 890 gg/l xylenes In addition,the fuel additive MTBE <br /> was detected by EPA Method 8020 in samples EW-3 and VW-6 at concentrations of 5 0 <br /> µg/1 and 10 µg/1, respectively <br /> • July 2004 Grab ground water samples were collected from the four extraction wells during <br /> pumping Each ground water extraction sample had detectable TPH and BTEX compounds, <br /> ' the maximum concentrations were 6,600 gg/1 TPH-g in sample VW-6,46 gg/l benzene and <br /> 420 µg/1 xylenes in sample EW-3, 16 µg/1 toluene in samples EW-1 and EW-3,and 290 µg/1 <br /> ethylbenzene in sample EW-1 In addition, the fuel additive MTBE was detected by EPA <br /> Method 8020 in samples EW-3 and VW-6 at concentrations of 16 µg/l and 7 0 µg/1, <br /> respectively <br /> • August 2004 Grab ground water samples were collected from the four extraction wells <br /> during pumping Each ground water extraction sample had detectable TPH and BTEX <br /> compounds, with the exception of xylenes at a concentration of 250 µg/1 in sample VW-6, <br /> ' the highest TPH and BTEX concentrations were detected in sample EW-3 at 8,800 gg/1 <br /> TPH-g, 400 µg/1 benzene, 83 µg/1 toluene and 360 µg/1 ethylbenzene In addition, the fuel <br /> Advanced GeoEnvironmental,Inc <br />