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i TAS <br /> WELL CONCENTRATIONS <br /> Shell Oil Products Ccunpany <br /> 2575 Country Club Boulevard <br /> SfOLkton,California <br /> WIC#204.7524-3505 <br /> Sample Measured Corrected SP TPPH B T E X MT61= Methanol Comments <br /> GW Depth GW Elev <br /> Date (ft) (ft) (ft) (uglL) (uglL) (uglL) (uglL) (uglL) (uglL) (ug/L) <br /> 22-Jan-96 12 14 -10 26 0 OQ 110000 12000 16000 1800 11000 NA NA <br /> 24-Apr-96 947 -757 003 NA NA NA NA NA NA NA <br /> 30-Jul-96 1114 -926 000 10000 14000 17000 1400 8700 620000 NA <br /> 25-Oct-96 1208 -1020 000 <500000 18000 14000 <5000 6200 2200000 NA <br /> 06-Feb-97 788 -600 000 <100000 12000 12000 1600 10000 1100000 NA <br /> 02-Apr-97 924 -736 000 <200000 14000 14000 2000 11000 1300000 NA <br /> 08-Jul-97 1008 -820 000 <250000 17000 16000 <2500 8400 1600000 NA <br /> VOCs by 8260 ND except for Benzene 13000 ppb, <br /> Oxygenates by 8260 ND except for MTBE 830000 <br /> 02-Sep-97 11 36 NA 000 <500000 9500 9100 <5000 6100 830000 600000 ppb <br /> OxygenaEe Compounds by 8260 ND except for <br /> 02-Dec-97 11 03 -915 000 <250000 14000 13000 <2500 9700 710000 540000 MTBE 890000 ppb <br /> MW-5(DUP) <br /> 22-Jan-96 NA NA NA 100000 10000 14000 1900 11000 NA NA <br /> 25-0ct-96 NA NA NA <500000 18000 14000 <5000 5700 2200000 NA <br /> 06 Feb-97 NA NA NA <100000 13000 13000 1700 11000 1100000 NA <br /> 08-Jul-97 NA NA NA <200000 17000 16000 <2000 10000 840000 NA <br /> MW-6 Tap casing elevation (ft) -0 21 <br /> 06-Feb-97 560 -581 000 <50 <0 50 <0 50 <0 50 <0 50 79 NA <br /> 01-Apr-97 650 -671 000 <50 <0 50 <0 50 <0 50 <0 50 47 NA <br /> 08-Ju{97 774 -7 95 0 00 <50 <0 50 <0 50 <0 50 <0 50 7 5 NA <br /> VOCs by 8260 ND,Oxygenates by 8260 ND except <br /> 02-Sep-97 887 1 NA 000 <50 <0 50 <0 50 <0 50 <0 50 12 <1000 for MTBE 11 ppb <br /> Oxygenate Compounds by 8260 ND except for <br /> 02-Dec-97 890 -9 11 000 <50 <0 50 <0 50 <0 50 <0 50 73 <1000 MTBE 110 ppb <br /> MW-7 Top casing elevation (ft) 022 <br /> 06-Feb-97 6 04 -5 82 0 00 <50 <0 50 <0 50 <050 <050 <2 5 NA <br /> 01-Apr-97 7 52 -7 30 0 00 <50 <0 50 <0 50 <0 50 <0 50 <25 NA <br /> 0 Jul 97 8 80 -8 58 0 00 <50 <0 50 <0 50 <0 50 <0 50 <2 5 NA <br /> 02-Sep-97 9 87 -9 65 0 00 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <1000 VOCs and Oxygenates by 8260 N❑ <br /> Oxygenate Compounds by 8260 ND except for <br /> 02-Dec-97 9 35 913 0 00 <50 1 1 <0 50 c0 50 <0 50 25 <1000 MTBE 32 ppb <br /> 3 <br /> 240-0783 <br />