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• IIcnrtan&Hcicn 5 Marina Q_ ';t Quarter 1998, Groundwater Moniioring <br /> April 16 1998 <br /> Pape. 5 <br /> TABLE 2 <br /> Laboratory Analytical Results <br /> Groundwater Samples (March 27, 1.998) <br /> B r E X TPH-G Oxygenates/Additives <br /> MTBE Ethanol tent- DIPE LTBE TAME <br /> Butanol <br /> DL1CLt10n 0 3 01 03 06 005 l 0 1 0 10 1 0 10 1 O <br /> limit~ Pgn }ig/1 liPll µg/l ing/' lig/1 µWl IIP// µP/1 !t /l µP11 <br /> rSample 1 D <br /> 1432-MW1-3/27/98 ND ND ND ND ND ND ND ND ND ND ND <br /> 1432-MW2-3/27/98 ND* 43 3 6 13 ND* 110,000 ND's ND* ND* ND* NDS <br /> 1432-MW3-3/27/98 ND ND ND ND ND 1,900 ND" ND* ND's ND* ND" <br /> 1432-MW4-3/27/98 52 15 45 100 052 ND ND ND ND ND ND <br /> -t•1432-MW5 3/27/98 ND ND ND ND ND ND ND ND ND ND ND <br /> IJnit( onversions Analytical <br /> µg/l parts pc,r billion(ppb) 13 H X ben/enc, toluene,ethyl bLnicnc, and xylene <br /> mg/1 parts pis million(ppm) 1 PII-6 -total petroleum hydros arbon%,quantilied as ga50lme <br /> ND none detected at or abovi.laboratory rLpnrted detection limit <br /> M 1131 methyl tort butyl Lthi-T <br /> tert 13ut41101 iertiary-butanol <br /> DIP1 di-isopropyl ethos <br /> 1 I Bh ethyl tertiary-butyl ether <br /> TAMI- tertiary amyl methyl ether <br /> ND* not detected at or above a raised laboratory reported detection limit(raised due to elevdc,d <br /> I M fBl~concentration),see laboratory reports for raised detection limits <br /> 4- ansate sample <br /> 3 4 INTRINSIC BIOREMEDIATION PARAMETERS <br /> The results of intrinsic bioremediation testing are summarized in Table 3, on the next page Intnnsic <br /> bioremediation parameters analyzed for by the laboratory include nitrate, sulfate, ferrous iron, and total alkalinity <br /> Intrinsic bioremediation parameters measured in the field include dissolved oxygen, oxidation-reduction <br /> potential, pH, electrical conductivity, and temperature Although intrinsic bioremediation testing results indicate <br /> that subsurface conditions may be conducive to the aerobic and/or anaerobic breakdown of petroleum <br /> hydrocarbons, additional monitoring of the intrinsic bioremediation is necessary to evaluate the potential for <br /> intrinsic bioremediation at the site <br /> L� CONDOR <br />