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• �1 • <br /> WELL CONCENTRATIONS <br /> C M Weber Enterprises Property <br /> 141 N El Dorado Street <br /> Stockton,California <br /> WCC#204-7524-1509 <br /> Sample Measured Corrected SP TPPH B T E X MTBE Methanol dO d0 <br /> Comments <br /> GW Depth GW Elev <br /> Date (ft) (ft) (h) (uglL) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (mg1L) (mg/Q1Method <br /> 25-Oct 96 24 3B NA 000 <50 <0 50 <0 50 1 <0 50 <0 50 I NA NA 42 YSI Meter MTBE by 8260 2 5 ppb <br /> 31-Jan 97 1967 NA 000 <50 <0 50 <0 50 1 <0 50 <0 50 (a) NA 34 YSI Meter 1 <br /> 02 Apr 97 21 29 NA 000 <50 <0 50 <0 50 <0 50 <0 50 (a) NA 31 YSI MeterEPA 8010 Detections <br /> 09-Jul 97 21 41 NA 000 <50 <0 50 <0 50 <0 50 <0 50 42 NA 26 YSI Meter EPA 8010 Detections <br /> 09 Oct 97 21 78 NA 0 Op <50 <0 50 <0 50 <0 50 1 <0 50 <2 5 <1 0 1 0 YSI Meier All Oxygenate Compounds by 8260 ND except for MTBE 4 0 ppb <br /> All Oxygenate Compounds by 8260 ND except for MTBE 6 4 ppb <br /> 13-Jan-98 21 56 NA 0 00 <50 25 1 5 0 Bi 36 69 '10 08 YSI Meter; See Lab data for HVOCs <br /> 22 Apr 98 1845 NA ' 0 00 <50 <0 50 <0 50 <0 50 <0 50 19 NA 0 4 YSI Meter Seo Lab data for HVOCs <br /> 28 Jul 98 1740 NA 000 <50 <0 50 <0 50 1 <0 50 <0 50 27 NA 1 08 YSI Meter See Lab data for HVOCs <br /> 05 Oct-98 1821 NA 000 <50 <0 50c0 50 <0 50 <0 50 81 NA 19 YSI Meter See Lab data for HVOCs <br /> VEW-4 I Top casing elevation (it) NA I I i ! <br /> 05 Sep 96 2327 1 NA 000 <50 c0 50 <0 50 1 <0 50 I <0 50 <25 NA NA NA <br /> 25-Oct 96 1 2378 NA 000 <50 <0 50 <0 50 <0 50 <0 50 <2 5 NA 47 YSI Meter <br /> 31-Jan-97 1905 NA 000 <50 <0 50 <0 50 <0 50 <0 50 1 <25 NA 37 YSI Meter <br /> 02 Apr 97 2070 NA 000 <50 <0 50 <0 50 <0 50 <0 50 4 fi NA 25 YSI Meter j <br /> 09-Jul-97 2060 NA 000 <50 I <0 50 1 <0 50 <0 50 <0 50 10 NA € 22 YSI Meter! <br /> 09 Oct 97 2101 1 NA I 000 <50 j <0 50 <0 50 <0 50 <0 50 1 <2 5 <1 0 08 YSI Meter I All Oxygenate Compounds by 8260 NO except for MTBE 2 1 ppb <br /> 13-Jan 98 2074 NA 000 <50 1 1 1 064 <0 50 20 1 26 <1 0 03 YSI Meter All Oxygenate Compounds by 8260 ND except for MTBE 3 7 ppb <br /> 22 Apr 98 1 1764 NA 1 000 <50 <0 50 <0 50 c0 50 <0 50 ' 49 NA 0 43 YSI Meter <br /> 28-Jul-98 1659 NA 1 000 <50 <0 50 <0 50 <0 50 <0 50 20 NA 05 YSI Meter <br /> 05-Oct-98 l 1742 NA 000 <50 <0 50 <0 50 <0 50 -<050 73 NA 53 <br /> Abbreviations, <br /> NA=Not analyzed or not available <br /> <x=Not detected at detection limit of x <br /> (DUP)=Duplicate sample <br /> TP PH=Total 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 coelullon with t 1 2 DCE � <br /> (a)=MTBE could not be determined due to cooluting compounds <br /> I <br /> 240 0821 8 <br />