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TA B, .t <br /> WELL CONCEN"1'RATIONS <br /> Shell Oil Products Cotupany <br /> 141 N. El boradu Street <br /> Stockton, California <br /> WIC#204-7524-1509 <br /> Sample Measured Corrected SP TPPH B TE X MTBE dO dO Comments <br /> Dale GW Depth (It) GW Elev (ft) (ft) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) mg/L) Method <br /> 31-Jan-97 19.67 NA0.00 <50 <0.50 <0.50 <0.50 <0 50 (a) 3.4 YSI Meter <br /> 02-Apr-97 21.29 NA 0 <50 <0.50 <0.50 <0.50 <0.50 (a) 3.1 YSI Meter EPA 8010 Detections <br /> VIEW-4 Top casing elevation (it): <br /> 05-Sep-96 23.27 NA 0.00 <50 <0.50 <0.50 <0.50 <0.50 <2.5 NA NA <br /> 25-Oct-96 23.78 NA 0.00 <50 <0.50 <0.50 <0.50 <0.50 <2.5 4.7 YSI Meter <br /> 31-Jan-97 19.05 NA 0.00 <50 <0.50 <0.50 <0.50 <0.50 <2.5 3.7 YSI Meter <br /> 02-Apr-97 1 20.70 NA 0.00 <50 <0.50 <0.50 <0.50 <0,50 4.6 2.5 YSI Meier <br /> Abbreviations; <br /> NA=Not analyzed or not available <br /> <x Not detected at detection limit of x <br /> (DUP)=Duplicate sample <br /> TPPH=Tolal Purgeable Petroleum Hydrocarbons carbon range C6 to C12 by EPA Method 8015(Modified) <br /> (previously reported as Total Petroleum Hydrocarbons as Gasoline) <br /> BTEX benzene,toluene,ethylbenzene, and xylenes by EPA Method 8020 <br /> MTBE=methyl-tertiary-butyl ether by EPA Method 8020 <br /> SP= Separate Phase hydrocarbon <br /> dO=dissolved Oxygen <br /> Notes: <br /> =MTBE could not be determined due to coelution with 1-1.2-DCE. <br /> (a)=MTBE could,not be determined due to coeluting compounds <br /> 97369 8 <br />