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samplL Lo1leLted tit}m V1W-2 13eniene xvlcriL MFBI tLrt}ar,, butanol and 1AME weir dLtLLted in the groundwatLl SaliIplc L0I1LLtLd from 'vlW-2 (0 k 1 5 550 72 and 3 6 µg/1 respLctrvely) B 1-1 X and 1€111-6 were not detected at oI above tilt laboratory ILported detection limit In the "-roundwater Sample Lo11eLtLd from MW-3 MTBE was detected In thL til nundwater sample LollcLted from Yl W3 (7 9 fig/1) BTEX MTBE and FP1I-G were detected In thL t'Ioundwatei sample L011ected tioni MW-4 (I 6 �Lg/l 0 4 1tg/l 2 0 µg/] 22 µg/] I 1 fLg/I and 0 8 mg/[ IcspLLtIVLly) I aboritoiy anaNtiLal result,, foi the SeptLmber 18 1997 ,ainplmg event aic presented below In ruble B 6 I ABLE B 6 Groundwater Sample Analytical Results — September 18, 1997 iB I H t Gasoline FPH-G TEPH Xdditives Oxygenates Kerosene Diesel Motor Oil I)LiLLtI011 ` 0 3 0 3 0 3 06 1 0 0 05 O(15 005 (1 5 1 Imlt\ µ1J1 )Lig/1 ttg/l ug/I µg/1 Ing/1 rng/1 me marl sample. 11) MW1-9/18/97 ND ND ND ND ND ND ND ND NE) ' MW2-9/18/97 c1 t ND ND 1 5 550(MIBF) Nr) 'SII) ND ND 72 (tLrtiary- htltanol) MW; 9/18197 tit) ND NI) ND 7 9(MIBI ND Nt) ND M) NIW4-9/18/97 1 h 04 2 U 22 14 (MTBE) 009 ND ND Ni) Lnn C onvirstoI S Anilyticil pai is pei bl Ilion(ppb} BI FX bUUtne tOhlelle t1hyl t1L11Zel1e ind�ylcnl. nil/k� phis IM 1711111011 fppnl l TI PH total prtlolenm hydrmirbons quintitmd is kUOSene diesel ind motor oil PH G total petrolcnin hydroclrbons qu-mti$rd as psoinic %ITRF nuthyi teit butyl Ltller T 4\ll tuniiry vnyl inethvl rlbu \D 11un4 dtLLted at or ibovL hbm itury deter tion hinits ' at4ur tIsolwt.idditivLc'nr}p,,natcs ND On December 31 1997, ( ondoi personnel were on site to conduct quarterly groundwater monitoring, Laboratory ' analyses of gi oundwatei samples indicated that B I FX, I P11-G, and the selected gasoline oxygenates/additives were not detected at of above the laboratory ieported detection limits in the sample collected fiom MW-1 1-thanol, DIPJ and I FBI were not detected at of above the laboratory reported detection limits in any of the ' groundwater samples BTLX, TPH-(i, and tertiary butanol were not detected at or above the laboratory reported detection limits in the sample collected from MW-3 MTBE and TAME were detected in the sample collected from MW-3 [,ow concentrations of BTEX constituents and TPH-G were detected in the samples Lollected from MW-2 and MW-4 MTB1 was detected in MW-4 MTBE, tertiary butanol and TAME were deteLted in MW-2 No floating product sheen or petroleum hvdrocarbon odor was noted in the monitor wells E ull evaluation of intrinsic bioremediation parameters was not conducted because additional monitoring was necessary to evaluate ' the potential foi intrinsic hioremediation at the site Groundwater elevation measurements collected at the site monitor wells on December 31, 1997 indicated that the average depth fiom the ground surface to groundwater was appioximately 4 feet The avei age depth to water ' at the site deLieased by approximately 2 feet between September 18, 1997 and December 31 1997 Groundwater 1