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<br /> Table 2. Ground Water Analytical Data- Oxygenate Compounds- Shell-branded Service Station Incident#98995874, 341 E Main Street, Ripon,
<br /> California
<br /> MTBE by MTBE by
<br /> Sample Date 1,2-DCA EDB EPA 8020 EPA 8260 Ethanol t-Butanol DiPE ETRE TAME Methanol TBA
<br /> ID Sampled (Concentrations in ppb)
<br /> MW-1 04/28/98 --- --- 92,000 150,000 <500 <100 <2 0 <2 0 44 20,000 --
<br /> 07/28/98 <5 0 <5 0 5,200 160,000 <625,000 <125,000 <2,500 <2,500 <2,500 32,000 --
<br /> 10/07/98 <25 <25 130,000 130,000 <100,000 <20,000 <400 <400 <400 30 000 --
<br /> --- 210 --- --- -- --- ---
<br /> L 1110198 --- --- ---
<br /> 11/18/98 --- --- 3,300 --- --- --- -- - - --- --- ---
<br /> --- 130,000 1 --- ---
<br /> --- -
<br /> 11/24198 --- --- '-- ---
<br /> --- 138,000 1 --- '--
<br /> ---
<br /> 12/01/98 --- --- --- ---
<br /> --- l3a,000 1 --- --- ---
<br /> --- ---
<br /> 12/08/98 --- --- "-
<br /> --- 190,000 160,000 --- --- --- --
<br /> 12/17/98 --- --- ---
<br /> --- --- 100,000 69,000 --- --- --_
<br /> 12/23/98 --' --- ---
<br /> --- --- 139,000 127,000 --- --- --- ---
<br /> !2/29198 --- -"- """
<br /> 01/06/99 --- --- 145 --- --- --- --- --- --- - --
<br /> 01/14/99 --- --- 88,100 86,700 --- --- --- --- --- --- ---
<br /> 01/19/99 <50 0 <50 0 152,000 156,000 <500,000 --- <5,000 <5,000 <5,000 95 <100,000
<br /> 01/28/99 <25,000 --- 133,000 149,000 --- --- --- --- --- --- -
<br /> --- --- 85,000 92,000 --- --- ---
<br /> 02/02/99 "' '-- ---
<br /> ---
<br /> 02111/99 --- --- 180,000 --- --- --- --- --- ---
<br /> 02/18/99 --- --- 140,000 110,000 --- --- --- --- --- 50 ---
<br /> --- 150,000 160,00fl --- --- -- --- -'
<br /> 02/24/99 --- "' -'-
<br /> (H/02/99 500,000 lils,000
<br /> --- 112,000 151,000 --- - - -
<br /> --- 132,000 114,000 ---
<br /> 03/19/99 --- '-- --- '--
<br /> --- --- ---
<br /> --- --- ---
<br /> --- 113,000 81,800
<br /> 03/22/99 --- _ __- _-- _--
<br /> 04/08/99 --- --- 9,780 13,000 --- --- --- --- --- - -
<br /> 04/14/99 --- --- 97,200 102,000 --- --- --- --- --- --- ---
<br /> 04/22/99 <0 50 <500 30,100 35,900 <100,000 --- <1,000 <1,000 <1,000 29,000 <20,000
<br /> 04/29/99 --- --- 19,000 24,100 --- --- --- --- --- --- ---
<br /> 05/06/99 --- -- 64,500 104,000 --- --- - --- --- --- ---
<br /> 05/13/99 --- --- <5 00 --- --- --- --- --- --- --- ---
<br /> 05/18/99 --- --- 70,000 94,000 --- --- --- --- --- -- ---
<br /> 05/25/99 --- 111,000 138,000 --- --- --- --- --- --- ---
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