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x 4' :.-,tC -- �- wgi January 2005= ¢' r _ ry y AGE NC Project NO.'-01 081:5 A Page 3 of ; } fry l z ---} r t xz maximurii-concentration of 260;000 micrograms per.lrter (�g/l) m'the,sample colle�ted from well47, 74 k �# :";BTEX compounds were detected m ground water salilples collected from wells NIW 1.through, _.. _ 6500 �igl'1 .toluene,T2,800 µg11 MW 3 at -7- -inaximurri concentrations of=5,600 µg11 ..benzene, _ ethylbenzene,and 34,000-µg11 totaLxylenes in the sample eoilected:from well MW 1 F = S - -- r ~MTBE was detected in ground water samples collected from wells MW 1 through - .. =�w rriaxiriium-conceritration_of-18;004 gg/1 in=the_sample collected from well 1VIW to TAIVIE`was detected°in,.giound wafer:samples:collected from .We11s,MW 1 =through MW=3 at a-maximum =- - ?concentration of 570µg/1 IriKtlie sarnple.collected.from=well MW1 No other analytes were detected :at or above lahoratory.detection limits.'n1 0 ground water-samples�analyzed f r1 ' _Tlie analytical results bf the:ground'water sairiples collected 64,30 August.2004 are summarized In ` Table .2The or _report (GTEL_:Proj ect'No: CT21=4-0408200), quality''ass e/4 'control :(QA/QC) report,.-and chain of-custody form• are.,included m:Appendix D='Documents - -n confirrriirig°the::upload of laboratory electronic deliverable.format (EI]F):files acid depth to�water . rfineasixrements.to.GeoTracker are included i-w Appendix E A,planetiLview�ri ap depicting the_{ � boneentrations of petroleum-fol is illustrated on Figure 4' ,� �.' _ ' -••.� .mss° �; .r _ - - - _ � r+ae -+rf ;�; .3r- i.... 4 4: SU MARY,AND GONCLU91ONS - _ Ax -Based on-the data collected from the site;AGE concludes •- The ground water elevations ranged from 3 i 54-RU l Teetbelow MSL Ground water- g y was inferred to be flowing toward`fihe east southeast;away from the former iJST area,alnder an average gradient of 4 • TPH g,:.1bITBE, TAME;'and BTEX compounds were detected in groimd water samples m=- - collected from wells MW-i through MW 3 at maximum concentrations iii the sample " _ _ _ - 'collected from well NlW:-1 of 260,90.0~ I_TPH -1$,000' 1`MTBE,=570_ 1_TAME; 2. g, . µti µ� 5 600-� l benzene 6 800 l.toluene 2'800'11g/1 ethylbenzene; and 34,000�ug/1 xylenes.' Concentrations ofTPH-g inTMwells MW=1 through MW-3 increased sxgmficantly since the last;; * 1 ..- . p ` X.quarter:;Concentrations-of BTEX-increasedinwells MW,-_l and:MW 2 and remamedstable _ y r or decreased in well=MW-:3;MTDE concentrations ind"reased at well MW 1 and decrease m:' f concentrations at the remaining wells: --tom..�'#.. , r � .� j•�Petroleum hydrocarbon impact to,.ground water is not defined in any direction_ r r t -`''". 'ir .sem s r '8 ji— IF - 1 *^ _ r 1 3 " h Advanced Ge.Environmental Inc., ' -3. "7' T- - Y - �.4 �M"' $- ^Tom^ - : `F' 77,