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06 January 2006
<br /> AGE-NC Project No 99-0559
<br /> Page 5 of 7
<br /> ranging from 3,500 lig/l(MW-1)to 310,000 pg/1(MW-2),ETBE was detected in the sample MW-3
<br /> at a concentration of 30 gg/1, TAME was detected in samples MW-6A and MW-7A at
<br /> concentrations of 120 µg/1 and 82 gg/l,respectively, and 1,2-DCA was detected in samples MW-1
<br /> through MW-4 and MW-7A at a maximum concentration of 130 gg/l(MW-7A) TBA was detected
<br /> in sample MW-2 at a concentration of 1,700 µg11 No additional target analytes were detected at or
<br /> above laboratory reporting limits during this sampling event
<br /> HU3 and HU4 TPH-g and BTEX compounds were detected in wells MW-513,MW-613 and MW-713
<br /> at maximum concentrations of 4,600 gg/l TPH-g, 1,100 µg/1 benzene, 1,200 gg/I toluene, 130 µg/1
<br /> ethyl-benzene and 780 µg/1 total xylenes in sample MW-713 In addition,the following fuel additives
<br /> were detected MTBE was detected in samples MW-513, MW-613 and MW-713 at concentrations of
<br /> 370 µg11, 11 µg/1 and 960 µg/l, respectively, TAME was detected in sample MW-713 at a
<br /> concentration of 35 gg/1, and 1,2-DCA was detected in samples MW-513 and MW-713 at
<br /> concentrations of 2 7 µg/1 and 27 µg/l, respectively No additional target analytes were detected at
<br /> or above laboratory reporting limits during this sampling event
<br /> HU5U TPH-g and BTEX compounds were detected in wells MW-6C and MW-7C at maximum
<br /> concentrations of 2,600 µg/1 TPH-g, 590 gg/I benzene, 800 gg/l toluene, 75 µg/1 ethylbenzene and
<br /> 500 µg/1 total xylenes in sample MW-7C Low concentrations of BTEX were detected in the
<br /> MW-5C sample In addition,the fuel additives MTBE,TAME and 1,2-DCA were detected in sample
<br /> MW-7C at concentrations of 510 µg/1, 21 µg/l and 14 µg/1, respectively No additional target
<br /> analytes were detected at or above laboratory reporting limits during this sampling event
<br /> HU51, TPH-g and BTEX compounds were detected in wells MW-6D and MW-71) at maximum
<br /> concentrations of 1,800µg/l,390 µg/1 benzene,680 gg/l toluene,50µg/l ethyl-benzene and 242 µg/1
<br /> total xylenes in sample MW-71) In addition, the fuel additives MTBE, TAME and 1,2-DCA were
<br /> detected in samples MW-6D and MW-7D at maximum concentrations of 260 gg/l, 14 µg/1 and
<br /> 11 µg/l, respectively No additional target analytes were detected at or above laboratory reporting
<br /> limits during this sampling event
<br /> HU6 TPH-g and BTEX compounds were detected in wells MW-6E and MW-7E at maximum
<br /> concentrations of 2,100 µg11 TPH-g, 240 µg/1 benzene, 600 gg/1 toluene, 61 µg/1 ethylbenzene and
<br /> 311 gg/1 total xylenes in sample MW-7E 1,2-DCA was detected in samples MW-6E and MW-7E
<br /> at a maximum concentration of 9 0 µg/l (MW-7E) In addition,the fuel additives MTBE and TAME
<br /> were detected in sample MW-7E at concentrations of 64 pg/1 and 12µg/l,respectively No additional
<br /> target analytes were detected at or above laboratory reporting limits during this sampling event
<br /> The analytical results of current and historical groundwater samples are summarized in Table 2 The
<br /> vertical distribution of dissolved MTBE is depicted in Figure 8 The laboratory report(CTEL Project
<br /> No CT214-0511077), quality assurance and quality control (QA/QC) reports and chain of custody
<br /> Advanced GeoEnvironmenW,Inc
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