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<br /> Table 1. Ground Water Analytical Data - Shell-branded Service Station - Incident#98995874, 341 E Main Street,Ripon, California
<br /> Depth to GW MTBE MTBE Dissolved Gallons
<br /> Water Elevatlona TPHg Benzene Toluene Ethylbenzen( Xylenes EPA 8020 EPA 8260 Methanol Oxygen Removed
<br /> Date Ueet) (feet) a --• -•- (Concentrations to b) b (m ) (gal)
<br /> MW-1 (TOC 4 63 94)
<br /> 04/28/98 2532 3862 <100 <10 <10 <10 <10 92,000 150,000 20,000 20 ---
<br /> 07/28/98 2700 3694 <50 <0 50 <0 50 <0 50 <0 50 5,200 160,000 32,000 18 ---
<br /> 10/07/98 2736 3658 <1,000 <10 <10 <10 <10 130,000 130,000 30,000 14 ---
<br /> 11/10/98 27 15 3679 <50 <0 50 <0 50 <0 50 <0 50 210 --- --- --- 75
<br /> 11/18/98 27 11 3683 <500 <5 0 <5 0 <5 0 <5 0 3,300 --- --- 13 30
<br /> 11/24/98 2727 3667 <10,000 <100 <100 <100 <100 130,000 130,000 --- 12 75
<br /> 12/01/98 2700 3694 <50,000 <500 <500 <500 <500 138,000 155,000 --- 1 1 95
<br /> 12/08/98 2745 3649 <10,000 <100 160 <100 <100 130,000 130,000 --- 13 60
<br /> 12/17/98 2737 3657 <20,000 <200 <200 <200 <200 190,000 160,000 --- --- 30
<br /> 12/23/98 2742 3652 <10,000 <100 <100 <100 <100 100,000 69,000 --- 14 30
<br /> 12/29/98 2722 3672 <50,000 <500 <500 <500 <500 139,000 127,000 --- 12 30
<br /> 01/06/99 2735 3659 <50 <0 500 <0 500 <0 500 <0 500 145 --- --- --- ---
<br /> 01/14/99 2738 3656 <10,000 <100 <100 <100 <100 88,100 86,700 --- 17 30
<br /> 01/19/99 2731 3663 <50,000 <500 <500 <500 <500 152,000 156,000 95,000 09 75
<br /> 01/28/99 2734 3660 <25,000 <250 <250 <250 <250 133,000 149,000 --- 1 1 95
<br /> 02/02/99 2776 36 18 <50 <0 50 <0 50 <0 50 <0 50 85,000 92,000 --- 13 30
<br /> 02/11/99 2720 3674 <1,000 <10 <10 <10 <10 180,000 --- --- 15 165
<br /> 02/18/99 27 10 3684 <20,000 <200 <200 <200 330 --- 110,000 50,000 2 1 170
<br /> 02/24/99 2592 3702 <2,000 <20 <20 <20 <20 150,000 160,000 --- 14 120
<br /> 03/02/99 2542 3752 <2,000 <20 0 <20 0 <20 0 <20 0 150,000 145,000 --- --- ISO
<br /> 03/11/99 2514 378 <50,000 <500 <500 <500 <500 112,000 151,000 --- 24 130
<br /> 03/19/99 2515 37 79 <50 0 <0 500 <0 500 <0 500 <0 500 132,000 114,000 --- 16 100
<br /> 03/22/99 2756 3638 <500 <5 00 809 <5 00 <5 00 113,000 81,800 --- 18 150
<br /> 04/08/99 25 17 3777 <10 0 <0 500 <0 500 <0 500 <0 500 9,780 13,000 --- 16 110
<br /> 04/14/99 2-585 3709 <50 0 <0 500 <0 500 <0 500 <0 500 97,200 102,000 --- 1 8 90
<br /> 04/22/99 27 13 3681 <1,000 <100 <10 0 <10 0 <10 0 30,100 35,900 29,000 2 1 110
<br /> 04/29/99 2508 37 86 <50 <0 50 <0 50 <0 50 <0 50 19,000 24,100 --- 17 110
<br /> 05/06/99 2773 36 21 <500 <5 00 <5 00 <5 00 <5 00 64,500 104,000 --- 15 200
<br /> 05/13/99 21521 3773 <50 0 <0 500 <0 500 <0 500 <0 500 <5 00 --- --- --- 120
<br /> 05/18/99 2303 35 91 <20,000 <200 <200 <200 <200 70,000 94,000 --- 2 1 30
<br /> 05/25/99 2317 35 77 <5,000 <0 50 <0 50 <0 50 <0 50 111,000 138,000 --- 10 55
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