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' 30 May 2005 <br /> . AGE-NC Project No 95-0184 <br />' Page 3 of 5 <br /> MW-7, VW-2B, and VW-5C <br /> As last quarter results indicated,the ground water appeared to flow generally northeast across much <br /> of the site under an average hydraulic gradient'of approximately 0 004 foot/foot(ft/ft, Figure 3 and <br /> Table 2) -" <br /> 1 3 2 ANALYTICAL RESULTS OF WATER SAMPLES <br /> TPH-g was detected in all of the sampled monitoring wells at concentrations ranging from <br /> 130 micrograms per liter(µg/1)in MW-7 to 190,000 µg11 in VW-2B(Figure7) TPH-d was detected <br /> in the sample from MW-4 at a concentration of 13,000µg/1 A map of dissolved TPH concentrations <br /> is illustrated on Figure 4 LA) f <br /> Various BTEX compounds were detected in all ground water samples analyze . The um <br /> concentrations detected were 63,000 µg/1 benzene (VW-2B), 51,000 µg/1 toluene µg/1 <br /> enzene, and 32,500 µ <br /> eth lb1 total xylenes (VW-5B) A map of dissolved benzene concentrations <br /> Y � <br /> lie is illustrated on Figure 5 <br /> MTBE was detected in samples from wells MW-4, VW-2B, VW-3 and VW-4 at concentrations <br /> ranging from 65 µg/1 (MW-4)to 460 µg/l (VW-4) <br /> The lead scavenger 1,2-DCA was detected in MW-2,MW-4,VW-2B, VW-3, VW-4, VW-5B, and <br /> VW-5C at concentrations ranging from 9 7 µg/1 (MW-2)to 480 µg/1 (VW-2B), EDB was detected <br /> in MW-4, VW-2B, VW-5B, and VW-5C at concentrations ranging from 22 µg/1 (VW-5C) to 220 <br /> g/l (VW-2B) A map of dissolved MTBE and 1,2-DCA concentrations is shown on Figure 6 ` <br /> Eight additi al Cs were detected at the following maximum concentrations naphthalene at <br /> 1,600 µg11 {� 5v <br /> 1,2,4-trimethylbe ne at 4A01), <br /> 1 (VW-5B), n-propylbenzene at 140 µg/1 <br /> m-W+�+ (�), 1,3,5 trimethylbenzene at,�g/l isopropylbenzene at 110 µg/1 (MW-4), g <br /> --prapy4benze ,t-amyl methyl ether at 60 µg/l (MW-2) and n-butylbenzene at <br /> 110 µg/l (VW-2B) <br /> Analytical results of round water samples are summarized in Tables 3 and 4 Copies of the <br /> yt g p p <br /> laboratory report(CTEL Project No CT214-0412117), quality assurance/quality control (QA/QC) <br /> reports, and chain of custody forms are included in Appendix D Documents confirming the upload <br /> of laboratory electronic deliverable format (EDF) files and depth to water measurements to <br /> GeoTracker are included in Appendix E <br /> f <br /> Advanced GeoEnvironmental,Inc <br /> 1 <br />