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- L , 5 30 November 2005 i AGE-NC Project No 00-0769 ' f Page 5 of 8 s collected from HU-2 (112 feet to 125 feet bsg) 1 s TPH-g was detected in all ground water samples except MW-8B and MW-9B at concentrations w " ranging from 27,000 pg/l,(MW-3A) to 640 µg/l (MW-7B) (Figure-8) '''„ 1 In 5• i I r BTEX compounds were detected in all samples except MW-8B and MW-9B at concentrations ' ranging from 4,900 µg11 (MW-4B) to 74 pg/1 (MW-7B) benzene, 1,100 µg/l (MW-4B) to 28 µg11 (MW-7B)toluene, 800 pg/1(MW-3A)to 23 pg/l (MW-2A)ethylbenzene and 5,100 pg/l(MW-3A)' to 53 µg/1 (MW-7B) total xylenes r The fuel additive 1,2-DCA was detected in the samples collected from wells MW-3A, MW-4B, - MW-513, and MW-6B at concentrations-ranging from 170 gg/l (MW-3A) to 5 1 µg/l (MW-5B) 3 2 3 Hydrogeologic Unit 3 ' Ground water samples from"C"wells MW-4C through MW-9C were collected from HU-3(140 feet to 160 feet bsg) TPH-g was detected in all ground water samples except MW-8C and MW-9C at concentrations ranging frond 1,900 µg/1 (MW-4C)to 320 [ig/l (MW-7C) (Figure 9) BTEX compounds were detected in all ground water samples except MW-8C and MW-9C at concentrations ranging from 410 pg/l (MW-4C)to 35 µg/l (MW-7C) benzene, 320 pg/1 (MW-4C) to 20 µg/1 (MW-7C) toluene, 46 pg/l (MW-4C) to 18 µg/1 (MW-7C) ethylbenzene and 268 µg/l (MW-4C)to 36 µg/1 (MW-5C)total kylenes ' ' The fuel additive 1,2-DCA was detected in samples collected from wells MW-4C,^ MW-5C, i MW-66, at'concentrations ranging from 14 µg/l (MW-4C) to 3 2 µg/1 (MW-5C) TAME was detected in MW-4C at a concentration of 8 5 µg/1 3 2 4 Hydrogeologic Unit 4 Ground water samples from"D",wells MW-41)through MW-9D were collected from HU-4(160 feet ' to 175 feet bsg) , , TPH-g was detected in all ground water samples except MW'8D and MW-91) at concentrations ranging from 33,000 µg/1 (MW-4D) to 370 pg/l (MW-7D) (Figure 10) r Advanced GeoEnvironmental,Inc r , t ,