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`I <br /> - �-- _.• — �".: ,r ".if -x.rx. -'}'' '•n r ,� I}� •} R�``1 I,n I I x � -ry! d1�ft !,�{ <br /> I r ' a 1 ,fs 1.1 ' ' } t•' I i;„ f' I },'(' �� yt `1 I111l I r �iry t �I f tri {�. T'. <br /> .{ 1 t• F r a,l , ,I I � � rl'� sill' 41. 7,:R <br /> J I <br /> 1 I i I A t 1 I 'I ' i {. 1 J ,, it 1 I I "✓' '�' 'Iw ' h 'iT <br /> I .r <br /> "04 May 2000 <br /> AGE-NC ProjectYN6 95 0114 <br /> Page 7•6f 8 <br /> Concentrations of vinyl chloride Reported in'1VIW3 (130 ugll) and MW6 (80'E cg%1) exceeded ,, <br /> ' the State MCL of 0.5 gg/l. <br /> • TPH-ss was detected in;all the analyzed soil samples from`boring 1,'extending from.40 <br /> ` --feet to 65 feet.bsg. The vertical extern of beyond b5 feet,bsg.i's unknown. <br /> • Soil impacted with,TPH-sswas encountered in two depth intervals;in soil.boring SB2;yfrorri `}, M:a <br /> 10 feet b`sg to a depth of 50 feet bsg and fr6,m 70 feet and$0 feet bsg The vertical extent of <br /> beyond 80 feet bsg'is unknown. <br /> • •TPH-ss was not detected in'soil during from the installation of well Nlw-7, east.of the former .; <br /> UST area. PCE was'detected in the soil'samples collected-at a depth of'45;s:feet bsg,';fr'om <br /> boring MW=7. <br /> I PCE and other various VOC degradation by-products were.detected in soil,collected'from <br /> .the soil boring SBI at depths 50 feet and 65 feet bsg.. <br /> 5.0 CONCLUSION <br /> Based upon the results of the investigation; AGE coricluded,that: ;` .. <br /> The lateral extent of the dissolved halogenated-hydrocarbon plume has not been.,defined east <br /> of well MW-6 and MW-7. <br /> • Wells at the site are"drowned"with well screen'intervals as much as 11 feet'below present <br /> Found water surface. s 4 ; '�• <br /> 6.0. RECOMMENDATIONS <br /> Based upon the results of the investigation, AGE recommen'ds,' <br /> • r. .' - . r 1F I _ - 111 J' I � rel <br /> • Installation'of at least one additional ground water monitoring-well-at the eastern edge of the w- <br /> `' property to determine the lateral extent of impacted ground water.., <br /> The next ground water monitoririg event should be scheduled for May 2000.`..,', <br /> { ;4dvunced GeoEnvironmental,Inc. �' <br />