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TABLE 1 <br /> Current Groundwater Monitoring&Analytical Data <br /> Former ARCO Service Station No.4493 <br /> 205 N.Center Street,Stockton, CA <br /> ,_ J41i�49yMed' Calc. E - �'.• )., � ' '' <br /> hoc et <br /> i SAH` GW GRA f E X, MTBE TBA !]IPE . ;ETRE TA(yIE Elaltill 2" I ' . 17.0. I <br /> 5N�11'M?, l3rtta 1 Notes Eta�ratlutt 1Mut�x:. ,, ... n �..:: 151x+11 Gomtrt0tl <br /> Thteknass Elev 11 tlIr '' x(Pgl!}. :(Pg1L) ((NgIL}! {Ng►t 1 imglL} <br /> (tk;M5Ll 0 .:(rest} : {fAf( '. lug a• € ( (P9nf <br /> .. �I : Isj � �C� 1 3. t �slr is I <br /> Shallow Zone <br /> MW-1 04113/09 NS 11.07 13.85 0.00 -2.78 - <br /> MW-2 04113/09 12.06 15.80 0.00 -3.74 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <10 <0.50 <0.5D <0.50 <50 <0.50 <0.50 2.27 <br /> MW-3 04113!09 NS 13.06 16.05 0.00 -2.99 <br /> MW4 04/13/09 12.59 16.20 0.00 -3.61 4,500 7.6 13 4.0 22 26 <50 <2.5 <2.5 <2.5 <250 <2.5 <2.5 0.91 <br /> MW-5 04/13/09 NS 14.43 18,85 0.00 -4.42 - - - - - - - - ry <br /> MW-6 04113/09 NS 12.81 16.42 0.00 <br /> MW-7 04/13/09 NS 10.48 14.98 0.00 -4.50 - - <br /> Intermediate Zane <br /> MW-BM 04/13/09 12.76 20.40 0.00 -7.64 250 <0.50 <0.50 <0.50 0.95 <0.50 <10 <0.50 <0.50 <0.50 <50 <0.50 <0.50 1.01 <br /> MW-9M 04/13/09 12.98 17.95 0.00 4.97 71 1.2 <1.0 <1.0 <1.0 40 <20 <1.0 <1.0 <1.0 <100 <1.0 <1.0 2.70 <br /> MW-10M 04113/09 10.76 15.55 0.00 -4.79 <50 <1.0 <1.0 0.0 <1.0 0.0 <20 <1.0 <1.0 <1.0 <100 <1.0 <1.0 1.05 <br /> MW-11M 04/13/09 NS 11.76 19,48 0.00 -7.72 - - _ - <br /> MW-13M 04/13/09 NS 10.59 18.65 0.00 -8,06 - <br /> Deep Zone <br /> MW-8D 04/13/09 12,77 18.42 0.00 -5.65 760 <0.50 <0.50 <0,50 2.9 1.4 <10 <0.50 <0.50 <0.50 <50 <0.50 <0.50 0.97 <br /> MW-9D 04/13109 13.00 17.65 0.00 -4.65 <50 <0.50 <0.50 <0.50 <0.50 3.5 14 <0.50 <0.50 <0.50 <60 <0.50 <0.50 2.41 <br /> MW-10D 04/13/09 10.64 15.40 0.00 -4.76 <50 <1.0 <1.0 <1.0 <7.0 <1.0 <20 <1.0 <1.0 <1.0 <100 <1.0 0.0 1.17 <br /> MW-11D 04/13/09 NS 11.72 19.40 0.00 -7.68 - - <br /> MW-12D 04/13109 NS 12.34 23.15 0.00 -10.81 <br /> MW-131) 04/13/09 NS 19.52 19.02 0.00 -8.50 - - - - <br /> Notes: <br /> GRO=Gasoline range organics ft-MSL=feet above mean sea level ` <br /> B=Benzene mg1L=Milligrams per liter <br /> T=Toluene pg1L=Micrograms per liter <br /> E=Ethylbenzene <=Analyte was not detected above the specified method reporting limit <br /> X=Total xylenes -=Not measured or analyzed <br /> MTBE=Methyl tert-butyl ether NS=Well not sampled <br /> TBA=Tert-butyl alcohol <br /> DIP =Di-isopropyl ether <br /> ETBE=Ethyl tert-butyl ether <br /> TAME=Tert-amyl methyl ether <br /> 1,2-DCA =1,2-Dichlorcethane <br /> EDB=1,2-Dibromoethane <br /> D.O.=Dissolved Oxygen <br /> SPH=Separate-phase hydrocarbons <br /> TOC=Top of casing(surveyed) <br /> Calc.GW Elev.=Calculated groundwater elevation=TOC-Depth to Water+0.75*(Measured SPH Thickness);assuming a specific gravity of 0.75 for SPH <br /> 4493 2Q09 TablesAs Page 1 of 1 Stantec <br />