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<br /> July 2003 r 1 M
<br /> • 't" �I,AGE-NC'Project No. 95-0114 ,
<br /> "Page.3 of 5
<br /> r,3.2. . 'LABORATORY ANALYTICALRESULTS OF GROUND WATER'-SAMPLES r .
<br /> During the May 2003 monitoring event, TPH-ss was,detected ,in ground' water sarnples'.;frozn
<br /> 'i monitoring wells MW-3,MW-6'MW-9,MW-10 at concentrations ranging between 700 micrograms
<br /> per liter (µg/l)-in MW-6 to 5;300 µg/l,in MW-9.
<br /> Ethylbe'nz
<br /> ene was•detected in well MW-9 at a concentration of 4.5•µg/l. No BTE&X co,mpbunds
<br /> Were detected in-the remaining samples.
<br /> Iii addition; the following chlorinated hydrocarbon compounds were detected:
<br /> Tetrachloroethene (PCE) Was.reported in.swnples MW-4, MW-6, MW-7 and MW-10 at:a,
<br /> ' maximum concentration of 300 µg/1 (MW
<br /> • Trichloroethene(TCE) wasreported in samples MW-6,MW-7 and MW-10 at a maximum
<br /> concentration of 310 µg/I (MW-10);
<br /> • 'cis 1,2-dichloroethene (cis-1,2-DCE) wasdetected in samples MW-3, MW-6-and MW-10
<br /> at concentrations of 13 µg/1, 560 µg/l and 610 µg/1, respectively;
<br /> ' 1,27DCA(trans) was detected in samples MW-6,.MW-10,at'concentrationg•of 13 µgll and
<br /> 13 µg/h
<br /> • Vinyl chloride was reported in samples MW-3, MW-6 and MW_i0 at a rriaximum
<br /> concentration of 170 µg/1 (MW-10);
<br /> • Naphthalene was reported in samples MW-3 and MW-9,at a maximum concentration of
<br /> ' 88 µg/1 (MW-9) '
<br /> a
<br /> Iospropylbenzene,n-propylbenzene,p-isopropyltoluene,and n-butylbenzene were detected'
<br /> in samples MW-3`.'and'MW-9. 1,2,.4 Trirriethylbenzeze, `1,2-dichlorobenzene and 1,4-
<br /> dichlorobenzene were detected in sample MW=9.
<br /> A map of dissolved TPH-ss and the PCE/TCE,cis=1,2=DCA and vinyl chloride is depicted on Figure: a
<br /> .2. Analytical results for chlorinated- hydrocarbon compounds- in ground water sarxiples- are
<br /> summarized in Tables 2 and 3.The laboratory"report(CalTech Lab No. CT214-0305122)for quality
<br /> '.assurance and quality control QA/QC data acid chain-of-custody form are included'in Appendix C.
<br /> .4.0, SUMMARY AND CONCLUSIONS
<br /> .Based upon the results of the investigation,AGE concluded that: =
<br /> • •` Ground w titer depths w ithin the established rn onAoring wells were between 2 3.86'a nd
<br /> 3
<br /> Advanced GeoEnvironmental,Inc: '
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