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i <br /> I17 June 2002 <br /> AGE-NC Project No 99-0559 <br /> Page 5 of 7 <br /> I3 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLE ANALYSIS <br /> Twenty-four ground water samples were analyzed by CTEL for the chemical constituents referenced <br /> in Section 2 2 The following is a summary of the analytical results for each hydrologic unit <br /> HU1 and HU2 <br /> ITPH-g was detected at concentrations ranging between 100 micrograms per liter (µg/l) in sample <br /> MW-8A and 173,000 µg/1 in sample MW-3 Benzene was detected at concentrations ranging <br /> between 26 gg/1(MW-6A)and 13,000 gg/l(MW-3),the remaining BTEX compounds ranged from <br /> 6 0 µg/1 ethylbenzene (MW-6A) to 12,000 µg/1 toluene (MW-7A) MTBE was detected utilizing <br /> EPA Method 8260 at a maximum concentration of 93,000 µg/1 (MW-3), of the remaining fuel <br /> Ioxygenates, ETBE was detected at 24 gg/l (MW-1) <br /> HU3 and HU4 <br /> I TPH- was detected at concentrations ran in between 110 1(MW-6B)and 2,900 gg/1(MW-8B) <br /> g g g g� <br /> Benzene was detected at concentrations ranging between 12 µg/l (MW-6B) to 240 gg/l (MW-7B), <br /> lie the remaining BTEX compounds ranged from 2 0 µg/1 xylene (MW-6B) to 490 µg/1 xylene <br /> (MW-7B) MTBE was detected by EPA Method 8260 at a maximum concentration of 470 gg/l <br /> (MW-5B), of the remaining fuel oxygenates, TAME was detected at 3 0 µg/1 (MW-5D) <br /> HU5 <br /> IWithin Upper HUS, TPH-g was detected at a maximum concentration of 1,500 µg/1 (MW-7C) <br /> Benzene was detected at a maximum concentration of 80 µg/1 (MW-7C), the remaining BTEX <br /> compounds were detected at concentrations ranging from 2 0 gg/l xylene (MW-8C) to 130 gg/l <br /> toluene/xylene (MW-7C) MTBE was detected by EPA Method 8260 Modified at a maximum <br /> concentration of 23 gg/l (MW-5C), the remaining fuel oxygenates were not detected <br />' Within Lower HU5, TPH-g was detected at concentrations ranging between 70 gg/l (MW-6D) and <br /> 2,500 µg/1 (MW-7D) Benzene was detected at concentrations of 2 5 µg/1 (MW-6D) to 100 gg/l <br /> (MW-7D), the other BTEX compounds were detected at concentrations ranging from 0 6 gg/l <br /> ethylbenzene(MW-6D)to 1,600 gg/l xylene(MW-7D) Ofthe fuel oxygenates,MTBE was detected <br /> in sample MW-513 utilizing EPA Method 8260 Modified at a concentration of 88 µg/1,and TBA was <br />' detected at 45 µg/1 in sample MW-5D <br /> IHU6 <br /> TPH-g was detected in two samples (MW-6E and MW-7E) at concentrations of 85 µg/1 and <br /> 1,700 gg/l,respectively Benzene was detected in the two samples at concentrations of 2 4 µg/1 and <br /> Advanced GeoEnvironmental,Inc <br />