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TAO <br /> WELL CONCENTRATIONS <br /> Shell Oil Products Company <br /> 2575 Country Club Boulevard <br /> StoLktun,California <br /> WIC#204-7524-3505 <br /> Sample Measured Corrected SP TPPH B T E X MTBE Methanol Comments <br /> GW Depth GW Elev <br /> Date (ft) {ft) {itj (ug/L) (ug/l.) (ug/L) (uq/ (uglL) {ug/L) {ug/L} <br /> RW-1 Top casing elevation (ft) 2 39 a <br /> 24-Jan 95 —1386 -1146 1 0 01_1_ NA NA NA NA NA NA NA <br /> New top casing elevation (ft) 1 20 b <br /> 29-Mar-95 974 -786- 091 NA NA NA NA NA NA NA Abandoned 5195 <br /> RWAA Top casing elevation (ft) 126 <br /> 27-Jul-95 1`1 19 -9 87 008 NA NA NA NA NA NA NA <br /> 10-Oct-95 1315 -1187 003 NA NA NA NA NA NA NA <br /> 22-Jan-96 ill 40 -10 14 000 110000 9300 12000 1800 8700 NA NA <br /> 24-Apr-96 880 -752 003 NA NA NA NA NA NA NA <br /> 30-Jul-96 1042 -916 000 130000 21000 25000 2400 13000 760000 NA <br /> 25-Oct 96 1152 -1023 004 NA NA NA NA NA NA NA <br /> 06-Feb-97 722 -594 003 NA NA NA NA NA NA NA <br /> 02-Apr-97 637 -711 000 140000 14000 22000 3300 19000 440000 NA <br /> 08-Jul-97 958 -832 000 120000 15000 20000 2600 15000 410000 NA <br /> VOCs by 8260 ND except Benzene 13000, <br /> Toluene 15000,Xylenes 9400 All in ppb <br /> Oxygenate Compounds by 8260 ND except for <br /> 02-Sep-97 1066 NA 000 120000 14000 20000 2600 14000 340000 280000 MTBE 340000 ppb <br /> Oxygenate Compounds by 8260 ND except for <br /> 02-Dec-9T <br /> 1020 -894 0 00`5 43000 5100 4000 850 4700 160000 82000 MTBE 1B0000 ppb <br /> RW-1A(DU P) <br /> 30-Jul-96 NA NA NA 140000 23000 28000 <540 14000 820000 NA MTBE by EPA Method 8260 890000 ppb <br /> 02-Apr-97 NA NA NA 130000 15000 24000 3400 19000 450000 NA <br /> VOCs ND except Benzene 14000,Toluene 18000 <br /> ppb,Xylenes 13000 All in ppb <br /> Oxygenate Compounds ND except for MTBE <br /> 02-Sep-97 NA NA NA I 130000 1 15000 1 21000 2900 16000 1 360000 240000 350000 ppb <br /> Oxygenate Compounds by 8260 ND except for <br /> 02-DBC-97 NA NA NA 54000 6300 8800 1500 8400 160000 77000 MTBE 190000 ppb <br /> p¢brev�aUons. <br /> NA=Not analyzed or not available <br /> (DUP)=Duplicate sample <br /> i <br /> 240-0783 5 <br />