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TABLE 1 <br /> WELL CONCENTRATIONS <br /> I Shell Oil Products Company <br /> 620 West Charter Way <br /> Stockton,California <br /> WIC#204-7524-4305 <br /> Sample Measured Corrected SP TPPH B T j E X I MTBE by Methanol dO dO Comments <br /> 8020 <br /> Date I GW Depth(ft) GW Elev(ft) (ft) (ug/L) (ug/L) (ug/L) I (ug/L) (ug/L) (ug/L) (mg/L) (mg/L) Method <br /> 09-Oct-92 3950 4887 0 00 <50 <0 5 <0 5 <0 5 <0 5 NA NA NA NA <br /> 19-Feb-93 3792 5045 000 <50 <05 <0 5 I <05 <0 5 NA NA NA NA <br /> 28-May-93 1 3556 5281 000 <50 <0 5 <0 5 <0 5 <0 5 ' NA NA NA NA <br /> 27-Aug-93 3663 5174 000 <50 <0 5 <0 5 <0 5 I <0 5 NA I NA NA I NA <br /> 22-Nov-93 3695 5142 000 <50 <0 5 <0 5 <05 <0 5 NA NA NA NA <br /> 15-Feb-94 3647 5190 0 00 <60 <0 5 <0 5 <0 5 <0 5 i NA NA NA NA <br /> 10-May-94 3558 5279 000 <50 <0 5 <0 5 j <0 5 <0 5 NA NA NA NA I <br /> 16-Aug-94 3664 5173 000 <50 <0 5 <0 5 <0 5 <0 5 NA NA NA NA <br /> 17-Nov-94 3682 5155 000 <50 <05 <0 5 <0 5 <0 5 NA NA NA NA <br /> 16-Feb-95 3401 5436— 000 <50 <0 5 <0 5 10 <0 5 , NA I NA NA NA <br /> 17-May-95 2974 5863 000 <50 1 1 <0 5 <0 5 <0 5 NA NA NA NA <br /> i <br /> 15-Aug-95 1 2921 159 16 000 <50 <0 5 <0 5 <05 <0 5 i NA NA NA NA <br /> 16-Nov-95 2640 61 97 000 <50 <0 5 i 09 <0 5 10 NA NA NA NA <br /> 27-Feb-96 2671 6166 1 000 <50 <0 5 I <0 5 <05 <05 NA NA NA NA <br /> 15 May-96 30 70 <br /> 5767 000 <50 <0 50 <0 50 <0 50 <0 50 <2 5 NA 36 YSI Meter <br /> 22-Aug-86 2560 6277 000 1 87 c0 5 <0 5 08 23 I <010 NA 13 YSI Meter <br /> 25-Nov-96 j 2566 6271 000 <50 <0 5 <0 5 <0 5 i <0 5 <10 I NA 24 YSI Meter <br /> 24-Feb-97 1 2197 6640 000 <50 <0 5 <0 5 <0 5 1 <0 5 <10 NA 14 YSI Meter <br /> 19-May-97 21 79 66 58 0 00 <50 <0 5 <0 5 I <0 5 c0 5 <10 NA 4 4 YSI Meter <br /> 21-Aug-97 2270 6567 1 000 <50 <0 5 <0 5 <0 5 <0 5 <10 NA 14 YSI Meter <br /> All Oxygenate Compounds by 8260 ND except for <br /> 17-Nov-97 2376 6461 000 <50 <0 50 <0 50 <0 50 c0 50 NA <1 0 34 YSI Meter M i�#"pb <br /> 09-Feb-98 2105 6732 000 51 13 60 087 28 <3 NA 30 YSI Meter <br /> Abbreviations, <br /> TPPH=Total Purgeable Petroleum Hydrocarbons carbon range C6 to C12 by modified EPA Method 8015(Modified) <br /> (previously reported as Total Petroleum Hydrocarbons as Gasoline) <br /> BTEX=benzene,toluene,ethylbenzene,xylenes by EPA Method 8020 <br /> MTBE=Methyl-tertiary-butyl ether by EPA Method 8020 <br /> NM=Not measured <br /> NA=Not analyzed or not available <br /> <x W Not detected at detection limit of x <br /> (DUP)=Duplicate sample <br /> 240 0O <br />