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(�uarterlY <br /> an+tonng be�00 <br /> 5 <br /> Fre Sampling of Graundwater M Date Decem <br /> sampling <br /> Site N° <br /> Is Free Product(FP)Present an NA <br /> FP Recovered This Quarter <br /> NA <br /> P Recovered to Date <br /> s <br /> Cumulative F feet belov+f round surface 102 <br /> 43 15 to 43 g5 the v+cin+t,) of <br /> APProx+mate Depth to Grounupper radial In MW-3 <br /> Northeast and 2 and <br /> Direction upper Wilson wells - <br /> 1 and <br /> Groundwater Flaw 0 Q05 ft/ft'', <br /> water Gradient Upper round <br /> surface s <br /> Ground Groundwater 4S 55 to 4 _t5 <br /> 5 feet laelaw <br /> Apprax+mate Depth to Lower <br /> Gresundwater Flow Direction Lower <br /> Northeast <br /> er- Q fl16`� <br /> atter�,radient Low ArRyGE <br /> Groundw TION AND PERPORM 0 <br /> EMEDIA►TION SYSTEM OPE RA► Manufactured h 'VA <br /> INTERIM R Ozone <br /> In ect+an 5 stern <br /> Equipment Inventory 2005 <br /> q r�P-7g"2 <br /> t+fleGember 29, <br /> ooecat+ng Mo 005 thrauPeriodOCko � 2Q02. <br /> Reporting L M.W. <br /> 55 400 <br /> Q Concentration IL <br /> 2�1 <br /> Historicai Highest GR 18,OOQ <br /> f Concentration ft M'` '6'2�2 <br /> hest Benzene g5,Q4fl <br /> Historical H+9 entration g <br /> Ht hest MTBE Conc <S,flQQ It- MW <br /> Histrncal this Period <br /> Concentration X50 fE< MW-8 <br /> Highest GRO this period <br /> Cal to <br /> 00 IL MW 8 <br /> Highest Benzene C this Period <br /> Highest MTBE car`centratran Period <br /> Number of System Shutdowns This <br /> SS1ON• �ri the ARCO wells had <br /> DISGU elevations event (September B, <br /> Wells roundwster s m d to car+struct a <br /> er Zone monitoring event, g previous on+tor+aril use to the <br /> 11 uarter 2005 mo ince the plea level (NISL) enerally <br /> Of the fourth q feet in all wells S to mean direction was 5 wells -� <br /> pt the time 0 45 and p 58 were correcThe groundwater flow observed toa r has been the <br /> decreased bet�++teen mentsPigure 3) radial flow was <br /> Qepth t4V tioen Measure <br /> map ( 005 ft)ft Locally, raundwater flow <br /> 2flfl5) contour Site Northeast 9 <br /> groundwater ale radi thef d2 S Milson revious quarters reported <br /> northeast at an average g wells MW-�, <br /> E,TAME, EDB, or ethanal were not <br /> M�N-3 located bseNed at this site during p <br /> �W_2 and direction o DIPS, ETB les callJL) VI spoiled in,rtell <br /> predominant flow GRO,gTEX,TBA, roun&4ater sam4 X00 >�gfL� <br /> the fourth quarter 20Q5, <br /> MISE was reported to g -SSE <br /> During he upper zone wells g The highest concentration csf OTKATUS <br /> in any <br /> of <br /> _6, and Mme{. <br /> MW-3 through M <br /> 4641Quarter1y120051Are0--54fiR_AQ05 docPage 3 of 6 <br /> K1gp-Arco ror lfRS155 �� <br />