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• TABLE 1 • <br /> WELL CONCENTRATIONS <br /> Shell Oil Products Company <br /> 2575 Country Club Boulevard <br /> K <br /> Stockton,California <br /> WIC#204-7524-3505 <br /> Sample I Measured Corrected SP TPPH 13 ; T E X MTBE Methanol Comments <br /> GW Depth GW Elev <br /> Date i (ft} (ft) (ft) (ug/L) (ug/L) (ug/L) ' (ug/L) (ug/L) I (ug/L) (ug/L) <br /> MW-8 ,Top casing elevation (ft) 1 47 1 I 1 <br /> 06-Feb-97 780 -633 000 76000 800 1 6000 3000 12000 ' <1250 NA I <br /> 02-Apr-97 I 904 -757 000 86000 670 5600 3400 16000 7400 NA <br /> 08-Jul-97 1 974 -827 000 70000 700 1400 2000 8400 30000 NA I <br /> I VOCs by 8260 ND except for n Butylbenzene 360 sec- <br /> s I ! Butylbenzene 100,Ethylbenzene 2100, <br /> 1 I Isoproplybenzene 210,Naphthalene 280,n- <br /> Propylbenzene 790,Toluene 720, 1,2,4- <br /> 1 Tnmethylbenzene 5100, 1 3,5 Tnmethylbenzene 1500, <br /> I ' I Xylenes 9400 All in ppb <br /> 02-Sep-97 1 1074 NA j 000 83000 530 590 1700 i 6600 1 6700 <10000 I Oxygenates by 8260 ND except for MTBE 420 ppb <br /> Oxygenate Compounds by 8260 ND except for MTBE <br /> 02-Dec-97 11 08 I -961 0 00 430000 3700 900 2600 i 9000 7100 <10000 250 ppb <br /> 1 Oxygenate Compound by 8260 ND except for MTBE <br /> 29-Jan-98 864 -717 000 <50 <0 50 <0 50 <0 50 <0 50 40 19000 48000 ppb <br /> Oxygenate Compounds by 8260 ND except for MTBE <br /> 23-Apr-98 789 -642 000 41000 4700 470 I 620 1100 130000 53000 120000 ppb and TAME 1100 ppb <br /> MW-9 ITop casing elevation (ft) 127 1 <br /> 02-Dec-97 10 82 -955 000 <50 <0 50 1 <0 50 <0 50 1 <0 50 <25 <1000 I Oxygenate Compounds by 8260 ND <br /> 29-Jan-98 922 -795 000 <50 <0 50 <0 50 <0 50 <0 50 I <2 5 <1000 Oxygenate Compounds by 8260 ND <br /> 23-Apr-98 i 873 -746 000 <50 <0 50 <0 50 <0 50 <0 50 <2 5 1 <1000 1 Oxygenate Compounds by 8260 ND <br /> MW-10 ITop casing elevation (ft) -016 ! <br /> 02-Dec-97 595 -611 000 <50 <0 50 <0 50 <0 50 <0 50 i <2 5 <1000 I Oxygenate Compounds by 8260 ND <br /> 29-Jan-98 693 -709 I 000 I <50 <0 50 <0 50 <0 50 <0 50 1 <2 5 <1000 Oxygenate Compounds by 8260 ND <br /> 23-Apr-98 I 652 -668 000 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <1000 1 Oxygenate Compounds by 8260 ND <br /> MW-11 Top casing elevation (ft) 102 i ' <br /> 02-Dec-97 1000 -898 { 000 I <50 <0 50 <0 50 <0 50 <0 50 <2 5 <1000 Oxygenate Compounds by 8260 ND <br /> 29-Jan-98 I 777 -675 I 000 I <50 <0 50 <0 50 1 <0 50 <0 50 I <2 5 <1000 Oxygenate Compounds by 8260 ND <br /> 23-Apr-98 1 726 -624 000 <50 <0 50 <0 50 + <0 50 <0 50 <2 5 1 <1000 i Oxygenate Compounds by 8260 ND <br /> 240-0783 1 <br />