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<br /> 13 February 2003
<br />' AGE-NC Project No 95-0184
<br /> Page 3 of 5
<br />' 32 ANALYTICAL RESULTS OF WATER? SAMPLES
<br /> TPH-g was detected in all of the samp1cd monitonng wells at concentrations ranging,from
<br />' 580 micrograms per liter(µg11) in MW-7 to 220,000 µg11 in VW-213 (Figure 3) TPH-d was detected
<br /> in the sample from MW-4 at a concentration of 9 2,pe1 A map of TPH concentrations is provided _
<br /> in Figure 3 1Y1g M1,
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<br /> BT-EX compounds were detected b EPA Method 8260 in all ground water samples analyzed wito
<br /> p Y
<br /> the exception of MW-7, in which only xylenes was detected/The.maximumconcentrations detects F?
<br />' were 100,000 pg/l benzene and 100 000 pg/1 toluene in sample TW-2B, 4,200 p.g/l ethylberizeur
<br /> in sample VW-4 and 45,000 µgr l,otal xylenes in sample VW-2B A map of benzene concentrations
<br />' is provided in Figure 4
<br /> MTBE was detected by EPA Method 8260 in samples VW-213 (160 µg/l), VW-3 (120 lig/l) ar.s.
<br />' VW-4 (490 lig/1), none of the other oxygenated volatile organics were detected at concentratio-a;
<br /> above laboratory reporting limits A map of MTBE concentrations is provided in Figure 5
<br /> lieThe lead scavenger 1,2-dichloroethanc(1,2-DCA) .vas detected in samples MW-2, VW-2B,,VW-5
<br /> VW-4 and VW-5C,at concentrations ranking from 15 �igll (MW-5C)to 650 µg/l(VW-2B),the le.,
<br /> scavenger 1,2 dibromoethane(EDB)w i,r�etec,tt,,J in sampics VW-2B and VW-5B at concentratioi—
<br /> 1 of 230 lig/l and 240 jig/I, respectively `A map of 1 2-DC-A concentrations is provided in Figure 3
<br /> Six additional constituents were detected I - =,1' ,11-,info. 8260 at the `following maximoii.
<br /> concentrations naphthalene at 2,400 µg/1 I V-W =' , 1,1,4-tri-ciethylbenzene at 3,400 µg/l (VW-4),"
<br /> 1 n-propylbenzene at 360 µg/1 (VIA-),, i3O trimethylbenzene at 1,100 µg/1 (VW-<) -
<br /> isopropylbenzene at 120 µg/l (VW-3), end i-butylbenzene at 24 ug/1 (MW-2)
<br />' Analytical results of ground water samples are summarizeo' on Tables 2 and 3 Copic, i,f th{,
<br /> laboratory report (CTEL Project No C 1'214-0209096) and nain-of-custody forms arc, .ri
<br /> Appendix B
<br />' 4.0. SUMMARY AND CONCLUSIONS
<br /> Based upon data collected from the site, A;JE e onclude:; the following
<br />' Ground water elevations at the site ranged from 21 66 to 22 18 feet below lel 3L ! I l groul.d
<br /> water wells except VW-4 and VW-513 were "drowned", ground water levLls we,,c a,, high
<br />' as approximately 20 feel above the ,C reened into,vals of the drowned wells
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<br /> Advanced GeoEnvironmental,W
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