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<br /> CAJ RIA
<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 /> W ater Elevation' TPHg Benzene Toluene Ethylbenzene Xylenes EPA 8020 EPA 8260 Methanol Oxygen) R(1)ed
<br /> Date (f,et) (feet) -(Concentrations in b
<br /> MW-1 (TO('=63.94) ---
<br /> 04/28/98 25.32 38.62 <100 <1.0 <1.0 <1.0 <1.0 92,000 150,000 20,000 2.0
<br /> 07/28/98 2'1.00 36.94 <50 <0.50 <0.50 <0.50 <0.50 5,200 160,000 32,000 I.8 ---
<br /> 10/07/98 2'1.36 36.58 <1,000 <10 <10 <10 <10 130,000 130,000 30,000 14 7.5
<br /> 11/10/98 2'1.15 36.79 <50 <0.50 <0.50 <0.50 <0.50 210 1.3 3.0
<br /> 11/18/98 27.11 36.83 <500 <5.0 <5.0 <5.0 <5.0 3,300 --- --- 1.2 7.5
<br /> 11/24/98 27.27 36.67 <10,000 <100 <100 <100 <100 130,000 130,000 --- 1.1 9.5
<br /> 12/01/98 27.00 36.94 <50,000 <500 <500 <500 <500 138,000 155,000 --- 1.3 6.0
<br /> 12/08/98 27.45 36.49 <10,000 <100 160 <100 <100 130,000 130,000 ---_ 3.0
<br /> 12/17/98 27.37 36.57 <20,000 <200 <200 <200 <200 190,000 160,000 -' 1.4 3.0
<br /> 12/23/98 27.42 36.52 <10,000 <100 <100 <100 <100 100,000 69,000 -"" 12 3.0
<br /> 12/29/98 27.22 36.72 <50,000 <500 <500 <500 <500 139,000 127,000 ---
<br /> 01/06/99 27.35 36.59 <50 <0.500 <0.500 <0.500 <0.500 145 --- --- --- 3.0
<br /> 01/14/99 27.38 36.56 <10,000 <100 <100 <100 <100 88,100 86,700 ---
<br /> 1.7
<br /> 01/19/99 2.7.31 36.63 <50,000 <500 <500 <500 <500 152,000 156,000 95,000 0.9 7.5
<br /> 1.1 9.5
<br /> 01/28/99 2.7.34 36.60 <25,000 <250 <250 <250 <250 133,000 149,000 ___
<br /> 02/02/99 '.7.76 36.18 <50 <0.50 <0.50 <0.50 <0.50 85,000 92,000 --- 3.0
<br /> 1.3 15 3.0
<br /> 02/11/99 1.7.20 36.74 <1,000 <10 <10 <10 <10 180,000 110- 5 --- 2.1 17. 0
<br /> 16.5
<br /> 02/18/99 27.10 36.84 <20,000 <200 <200 <200 330 --- __ 1.4 12.0
<br /> 02/24/99 2:6.92 37.02 <2,000 <20 <20 <20 <20 150,000 160,000 18.0
<br /> 03/02/99 ;!6.42 37.52 <2,000 <20.0 <20.0 <20.0 <20.0 150,000 145,000 --- -2.4 13.0
<br /> 03/11/99 :16.14 37.8 <50,000 <500 <500 <500 <500 112,000 151,000 - 16 10.0
<br /> 03/19/99 :?6.15 37.79 <50.0 <0.500 <0.500 <0.500 <0.500 132,000 114,000 --- 18 15.0
<br /> 03/22/99 37.56 36.38 <500 <5.00 8.09 <5.00 <5.00 113,000 81,800 --- 1.6 11.0
<br /> 04/08/99 26.17 37.77 <50.0 <0.500 <0.500 <0.500 <0.500 9,780 13,000
<br /> 04/14/99 26.85 37.09 <50.0 <0.500 <0.500 <0.500 <0.500 97,200 102,000 ---
<br /> 1.8 9.0
<br /> 04/2y99 27.13 36.81 <1,000 <10.0 <10.0 <10.0 <10.0 30,100 35,900 29,000 2.1 11.0
<br /> 1.7 11.0
<br /> 04/29/99 26.08 37.86 <50 <0.50 <0.50 <0.50 <0.50 19,000 24,100 --64,5E30 104,000 1.5 20.0
<br /> 05/06/99 27.73 36.21 <500 <5.00 <5.00 <5.00 <5.00 --- 12.0
<br /> 05/13/99 26.21 37.73 <50.0 <0.500 <0.500 200 <0200 70 94,000 --- 2.1 3.0
<br /> 05/18/99 28.03 35.91 <20,000 <200 <200 --- 1.0 5.5
<br /> 05/25/99 28.17 35.77 <5,000 <0.50 <0.50 <0.50 <0.50 111,000 138,000
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