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15 March 2002 <br /> AGE-NC Project No 97-0249 <br /> Page 6 of 10 <br /> I at concentrations as high as 190,ug/l (benzene,P-16),MTBE was detected from P-15,P-16 and P-17 <br /> at concentrations as high as 32 µg11, TBA was detected from P-15 at a concentration of 33 µg/l, <br /> 1,2-DCA was detected from P-16 at a concentration of 6 7 µg/l The inferred extent of dissolved <br /> petroleum-impact within HU-1 is depicted in Figure 9 <br /> Six grab water samples were collected from Hydrologic Unit No 2 (between 35 feet and 60 feet <br /> bsg) TPH-g was detected in a water sample collected from P-17 at a concentration of 260 ,ug1l, <br /> TPH-d was detected in water samples collected from P-13, P-15 and P-17 at concentrations as high <br /> as 330,ug/l, BTEX constituents were detected in P-15 and P-17 at concentrations as high as 12 µg11 <br /> (xylene,P-17)with benzene concentrations as high as 13 µg11,MTBE was detected in samples from <br /> P-15, P-16 and P-17 at concentrations as high as 3 4 1.tg11 The inferred extent of dissolved <br /> petroleum-impact within HU-2 is depicted in Figure 10 <br /> Six grab water samples were collected from Hydrologic Unit No 3 (between 60 feet and 90 feet <br /> bsg) TPH-g was detected from water samples collected from P-15 and P-17 at concentrations as <br /> high as 740µg11, TPH-d was detected in P-15,P-16 and P-17 at concentrations as high as 1,000µg11, <br /> BTEX constituents were detected in P-15 and P-17 at concentrations as high as 86 ,ug/l (xylene, <br /> P-17) with benzene concentrations as high as 16 µg11 The inferred extent of dissolved petroleum- <br /> impact within HU-3 is depicted in Figure 11 <br /> Six grab water samples were collected from Hydrologic Unit No 4 (between 90 feet and i 10 feet <br /> bsg) TPH-g was detected from water samples collected from P-14, P-15 and P-17 at concentrations <br /> as high as 550 4g1l, TPH-d was detected from P-14, P-15, P-17 and P-18 at concentrations as high <br /> as 510 ug/l, BTEX constituents were detected in P-14, P-15 and P-17 at concentrations as high as <br /> 29 µg/l (xylene, P-15) with benzene concentrations as high as 22 µg11, MTBE was detected in a <br /> sample from P-17 at a concentration of 1 2 µg/l, 1,2-DCA was detected in sample P-15 at a <br /> concentration of 1 1 µg/l The inferred extent of dissolved petroleum-impact within HU-4 is <br /> depicted in Figure 12 <br /> Five grab water samples were collected from Hydrologic Unit No 5 (between 110 feet and 135 feet <br /> bsg) TPH-g was detected in water samples collected from P-15,P-16 and P-17 at concentrations as <br /> high as 1,400µg11, TPH-d was detected in P-14, P-15 and P-17 at concentrations as high as 1,400 <br /> µg11, BTEX constituents were detected in P-15, P-16 and P-17 at concentrations as high as 88 µg11 <br /> (xylene, P-15)with benzene concentrations as high as 57µg11, MTBE was detected in sample P-15 <br /> at a concentration of 2 4µg/l, 1,2-DCA was detected from P-15 at a concentration of 6 8 µg11 The <br />' inferred extent of dissolved petroleum-impact within HU-5 is depicted in Figure 13 <br /> One P-13 grab water sample was collected from Hydrologic Unit No 6 (depths greater than 135 feet <br /> bsg) TPH-d was detected at a concentration of 58 µg11 <br /> Advanced GeoEnvironmental,Inc <br />