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TABLE 2 <br /> Historical Groundwater Monitoring&Analytical Data <br /> Stockton Charter Way Commingled Plume <br /> 440,441,and 508 West Charter Way,1426,and 1444 South Lincoln Street,Stockton,CA <br /> TCC Depth Measured Calc. <br /> otor <br /> Well No. Data Notes Elevation at SPH Gev TPHg TPHtl Dil B T E % MTBE TBq DIPE ETBE TAME Ethanol McOH 1'2 EDB D.O. Comments <br /> (feet) watMDCA <br /> er Thickness Elev. (pglL) (pg/LI (P9A-) (pgfL) IPg/LI (pg/1 (pg1L1 IpgLLl (pgA-1 IpgfLl Pg1L) (pg/L) hogfl-) IpgIL) (MA-) (punk) <br /> Iteat) (feet) (teee) IpglL) <br /> SMW-1J 10/td/13 NSP 12.0] 1871 0.00 -6.64 - - - - <br /> 04122/14 NSP 18.32 0. 6.25 - <br /> 10R0114 NBP 20.35 0.00 <br /> Notes: <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> TPHd=Total petroleum hydrocarbons as diesel <br /> B=Benzene <br /> T=Toluene <br /> E=Ethylbenzene <br /> X=Total xylenes <br /> MTBE=Mehyl hall eme, <br /> TBA=Tert-butyl alcohol <br /> DIPE=Di-hopropyi ether <br /> ETBE=Ethyl Mrt-butyl ether <br /> TAME=Terkamyl methyl ether <br /> 1,2-DCA =1,2 Dkhloroethane <br /> EDB=1.2 DNrompelhane <br /> MCOH=Methanol <br /> D.O.=Dissolved Oxygen <br /> SPH=Separate phase hydrocarbons <br /> TOC=Top ofif,(in.nanedl <br /> Cak.GW Elev.=Cakulated groundwater ekvatAn=TOC-Depth to Water+015-Measo ed SPH Thickness);assuming a specific gravity or 075 for SPH <br /> ri=Milligrams per liter <br /> pg1L=Micrograms per liter <br /> <=Analyte was not detected above Ne specified method reponing limit <br /> -=Not measured or analyzed <br /> Refer to Ne reports'rin which data was first presented for more information on histori data. <br /> (")=Discrete sample depth in feet bgs <br /> A=TX wells were collected!as split samples from Blaine Tech via disposable bailer. <br /> B=TX wells were collectetl as split samples afterwards via Watena system. <br /> BTEX MTBE add oxygenates analyeed by EPA Method 82608 <br /> DEBT=Well destroyed.no sampling performed <br /> DRY=Well dry during gauging.not sampled <br /> OUP=Duplicate sample <br /> INA=Well Inaccessible <br /> J=Estimated value(less Nan Ne method reposing limit am greater than or equal d the method detection limit) <br /> N=deny of contaminant uncertain(hydrocarbon pattern atypical of indicated analylel:see lab repo, <br /> NS=Well not sampled <br /> NSP=Well not sampled this evert,in accordance Win groundwater sampling schedule <br /> R=Data rejected(data determined to be untenable by laboratory);wap resampled to chain valid result <br /> Beginning in Ne first quarter 2008,Ne carbon ar ge for GRO was changed from C4C12 to CB 12. <br /> Fortner ARCO 21118-DO data collected for MW-10 on May 05,2008 may be anomalous based an Ne historical trends. <br /> Former ARCO 21M-DO data collected!on July 23r 2009 may be anomalous based on Ne historical trends. <br /> Chevron M&2IX GRO data collected on 08rgi for wells MW-2.MW-3.MWdA.M W-dC,add MW-BA may be anomalous based an Ne hatonael trends. <br /> Chevmn N9-2033-DRO data collected on 10/141W may be anomalous based on the historical trends. <br /> Former Colombp/roscona Bakery-DO data collected!lar Mi TXd W-21-80,and TX-MW-8-5)on 07122109 may be anomalous based on Ne historical trends. <br /> Former Colomboaoscana Bakery-DO data collected for Nil on 01/1697 may be anomalous based on Ne historical trends. <br /> Stockton Charter Way Commingled Plume GW Table.xlsm Page 8 of 8 Stantec <br />