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<br /> AGE N •Project No 95-04`14-`
<br /> .Page 3 of
<br /> 2`feet above.the tops of the screened intervals' of'.wells MW=6 and 1VlW 7 ?Therefore, samples "
<br /> collected from these,wells.may,not be representative of ground watercondtttons'at or near the top
<br /> of the saturated.'soil,zone or capillary zone; Where the greatest impact to ground
<br /> encountered
<br /> s.1` fir' ' - ';; .. r .i Iii . _ A,. ! .I 1 ,'•
<br /> 3 2.', PETROLEUM HYDROCARBON-IMPACTED:GRbLTND WATER
<br /> ti
<br /> During.the June 2000.monitoring event;TEH-ss was detected:,in samples &otii nonitorirlg wellsl, ,
<br /> MW-,2 and MW-3 at coricentrations-of 140 micrograms per liter'(µg11) and 650 µg11, respectively.
<br /> TPH-ss was not reported in`the-samples nollected from wells,MW1., MW-4; M-W-5, MW-6 or.
<br /> 'MW=7'during this sampling-event.:Analytical results'of groundwater samples are.sumrnarized.in
<br /> Tables2 and 3.. The laborataty report; quality.Assurance_and.quality control"(.QA/QC} report and
<br /> chain-of-custody'form for the June'2000-Oound Water moriitoiing event;are.included in Appendix B.
<br /> 3.3. CHLORINATED HYDROCARBON,-IMPACTED GROUND WATER L
<br /> During the June 2000 sampling event,chlorinated hydrocarbons were reported.in'samples from each' .
<br /> well'at the site. The chlorinated•compound 'reported with the highest concentration in samples ; a
<br /> collected,was cis 1',2-dichloroethene (cis-1,2'-DCE) at 1400,4gll in well MW-6 Low,con' centrations
<br /> ' 1 of cis 1,27DCE were also reported*in samples from wells MW-1, MW-3,.MW-4,MW--5 and MW=7. '
<br /> Vinyl_chloride,was reported in'samples froth wells MW-3-and MW-6 at concentrations of 170 µg/l '
<br /> ' w ,and',140 µg/1, respectively. : .
<br />- Tetrachloroethene (PCE) and trichloroethene (TCE);were reported in samples from each yell with ,
<br /> the exception of well MW-3, at concentrations as high as 1,000 µg11 and 6.60 E:)Al, respectively.
<br /> 1,2-dichlorobenzene was detected iri the,sample fr6m Well MW-2 ata concentration of 2.9µg/1:
<br /> Analytical.results for"chlorinated hydrocarbon compounds in,ground water,samples are-summarized.
<br /> in Table 3.'The-laboratory report for June;'QA/QC report and chain-of_custody-form are included
<br /> ' in Appendix B.
<br /> ' 4.0.. SUMMARY
<br /> In`slrmmary; AGE found thaf:
<br /> Between Ianuary-2000, and June'2000, the relative`ground'water elevation increased an•
<br /> average of 2.56,feet,at the site:
<br /> Ai Advanced GeoEnvironmen[al Ine t i
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