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I ' <br /> , n I <br /> 12 February 2004 <br /> ' AGE-NC Project No 00-0769 ` <br /> Page 4of7 <br /> 5 I <br /> I � <br /> 32 -ANALYTICAL RESULTS OF GROUNDWATER SAMPLES - <br /> ' During the-December 2003 sampling event, ground water samples from 31 monitoring wells were <br /> collected from HU-1 through HU-5 and submitted for laboratory analysis for the constituents listed <br />' m Section Z 2 Analytical laboratory results are summarized in Tables 2 through 5 The lateral extent <br /> of petroleum hydrocarbon-impacted ground water for HU-1 through HU-5 is illustrated in Figures <br /> 7 through 11, respectively <br /> I <br /> , s <br /> HU-1 <br /> Ground water samples`frorn wells MW-I, MW-2B, MW-3B, and "A" wells, MW-4A through r <br />' MW-9A, were collected from HUI <br /> I <br /> TPH-g was detected in all groundwater samples except MW-9A at concentrations ranging from 320 <br />' micrograms per liter (µg/1) in well MW-6A to 260,000 µg/1 in well MW-1 (Figure 7) <br /> BTEX compounds were detected in all samples except MW-9A,ranging from 2 5 µg/l(MW-8A)to <br /> 44,000µg/1(MW-1)benzene,3 7µg/1(MW-8A)to 90,000µg/I(MW-1)toluene,2 8 µg/l(MW-8A) <br /> to 16,000 µg/1(MW-1)ethylbenzene and 7 9 µg/l(MW-8A)to 107,000 µg/1(MW-1)total xylenes <br /> Fuel additive 1,2-DCA was detected in samples from MW-1, MW-2B, MW-4A, MW-5A and <br /> MW-6A, with concentrations ranging from 3 3 µg/1 (MW-6A) to 2,000 µg/1 (MW-1) DIPE was <br /> detected in the sample from MW-2B at a concentration of 3 2 µg/1 - <br /> z ' + <br /> r <br /> r <br />' HLT-2 <br /> r <br /> Ground water samples from wells MW-2A,MW-3A,and"B"wells,MW-4B through MW-9B,were <br /> collected from HU-2 N <br /> TPH-g was detected in all ground water samples except MW-2A, MW-8B and MW-9B, at ` <br />' concentrations ranging from 130 µg/l (MW-8B) to 19,000 µg/l (MW-3A) <br /> Various BTEX compounds were idetected, in all- samples +except MW-2A' and MW-9B, at <br />' concentrations ranging from 3 0µg/1(MW-8B)to 2,500 µg/1(MW-3A)benzene,'? 0µg/1(MW-8B) <br /> to 350 µg/1 (MW-4B)toluene, 2 1 µg/1 (MW-7B) to 230 µg/l (MW-3A) ethylbenzene and 3 0 µg/1 <br /> (MW-8B) to 3,200 µg/l (MW-3A, MW-4B) total xylenes <br /> Fuel additive 1,2-DCA was detected in the sample collected from well MW-4B at a concentration <br /> • I i <br /> of 4 2 µg11 , <br /> 1 Advanced CeoEavironmental,Inc <br /> I I <br /> ' I v <br />