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f X,` <br /> ,. � JI I,I I'�' + ,+t ',1 it •ru " � .- '.t " 1 at, . t _ '. <br /> f1 SINN <br /> 21 'Aprll'2003 U {. d r <br /> • AGE „ � 11 <br /> NC.Project No.',95-0114 r <br /> Page <br /> } Intervals of wells MW-6 through MW-10. ' <br /> ' 3.2. LABORATORY ANALYTICAL RESULTS OF GROUNDWATER SAMPLES <br /> 1' <br /> During the January 2003 monitoring event,'TPH=ss was detected in ground water.samples`froffi <br /> monitoring ,wells MW-3, MW-6, ,MW-7,•MW-9,, MW-10 at concentrations ranging between <br /> 1'10 micrograms per liter(µg/I) in MW-7 to 3,700 µg/1 in MW-9. <br /> ' The BTEX compound<ethylbenzene was detected in well MW-9 with at a concentration of 8.2 µg/1,. <br /> .Tri addition, the following chlorinated hydrocarbon compounds were detected: <br /> {' Cis 1,2=dichloroethene (cis71,2-13CE) was detected in sample`s MW-3,MW-6 and MW-10 <br /> at'concentrations of 13 µg/l, 1,600 µg/l and 770 µg/l, respectively;-• <br /> '• • 1,2-DCA(trans) was detected in samples MW-6, MW�10 at concentrations of 19 µg11 and <br /> 10 jig/I; ' <br /> '... Tetrachloroethene(PCE)was reported in samples MW-6,MW-7 and MW-10 at'a maximum <br /> concentration of 870 µg/l (MW-6); <br /> ' Trichloroethene (TCE) was reported,in samples MW-6 and MW-10 at a maximum <br /> concentration of 720 µg/l (MW-6); <br /> • Vinyl chloride was reported.in samples MW-3,' MW-6• and MW-10 at a maximum <br /> ' concentration of 140 µg/1(N W-10); <br /> Naphthalene was reported -irr`samples MW-3, MW-9 and- MW-'10 at amaximum <br /> ' concentration of 120-gg/1 (MW=9); e ; <br /> + lospropylbenzene,n-gropylbenzene, p-isopropyltoluene.and n-butylbenzene were detected <br /> ' in samples MW:-3 and MW-9. 1,2;4 Trimethylbenzene, 1,2-dichlorobenzene•'and 1,4= <br /> ' dichlorobenzene were.detected in,sample MW=9. <br /> A'map of dissolved TPH-ss and the VOCs-PCE/TCE, cis-'1,2-DCA and vinyl'chloride is depicted <br /> in"Figure 2..Analytical results for chlorinated hydrocarbon compounds in ground water samples are <br /> summarized in Tables 2 and 3. The laboratory report (CalTech Lab Nos. 0301-064-Fl--to'-8) for <br /> ' September; QA/QC report and chain-of-custody form'are-included in Appendix C. ; <br /> Advanced GeoEnvironmental,Inc. <br />