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Table 2 <br /> Historical Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#14117 <br /> 2725 Country Club Boulevard <br /> Stockton,CA <br /> Well ID Ethyl- MtBE 1,2- Meth• Eth• Ace• Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPHg 8020 MtBE TBA DIPE EtBE TAME DCA EDB anoi anoI tone Notes Oxygen DTW SPT WTE <br /> OC [LIL /L IL tL /L IL /L /L /L /L L /L IL IL !L m /L feet feet feet <br /> Grab Groundwater Samples <br /> B-1 <br /> ter 23' 08/14/03 <5.0 <5.0 <5.0 6.1 <500 <5.0 14,000 <5.0 <5.0 <5.0 <5.0 <5.0 - -- -- -- <br /> ter 33' 08/14/03 <0.50 <0.50 <0.50 0.71 62 <0.50 130 <0.50 <0.50 <0.50 <0.50 <0.50 - -- -- -- -- <br /> ter 43' 08/14/03 <0.50 0.53 <0.50 1.10 <50 <0.50 150 <0.50 <0.50 <0.50 <0.50 <0.50 -- -- - - <br /> ter 52' 08/14/03 0.87 2.01 0.72 4.41 80 --1 1.1 2,0001 <0.50 <0.50 <0.50 <0.50 <0.50 -- -- - -- -- -- -- <br /> MW-1 <br /> 1.29 08/28/99 <2.5 <2.5 130 <2.5 260 -- 6.4 <20 <5 <5 <5 -- -- -- 0.4 9.61 0.00 -8.32 / <br /> 11/24/99 1.57 0.33 100 5.3 118 25.6 12.8 23.3 <5 <5 <5 - - - 1.9 9.98 0.00 -8.69 <br /> 02/02/00 5.64 <0.3 <0.3 2.08 682 728 835 580 <10 <10 <10 - -- -- -- -- 1.1 8.13 0.00 -6.84 <br /> 05/16/00 1.2 0.58 <0.5 <1 140 - 98 <50 <2 <2 <2 -- -- -- - 0.8 7.50 0.00 -6.21 <br /> 08/08/00 3.1 <0.5 <0.5 3.4 120 - 160 <120 <5 <5 <5 -- -- 0.5 8.94 0.00 -7.65 <br /> 11/15/00 <25 <25 <25 <75 560 - 1,500 <1200 <50 <50 <50 - - 0.5 9.13 0.00 -7.84 <br /> 02/07/01 1.1 <0.5 <0.5 2.7 680 1,200 <1,200 <50 <50 <50 - 0.9 8.00 0.00 -6.71 <br /> 05/23/01 1.1 <0.5 32 2.1 440 1,700 <1,200 <50 <50 <50 - - -- - 1.5 7.98 0.00 -6.69 <br /> 09/25/01 <0.5 <0.5 24 <0.5 170 7,200 <4,000 <1,000 <1,000<1,000 - 0.8 10.15 0.00 -8.86 <br /> 11/05/01 3.5 1.9 40 4 710 9,600 5,400 <1,200 <1,200 <1,200<1,200<1,200 - - 0.9 9.90 0.00 -8.61 <br /> 01/08/02 <5 <5 <5 <5 190 -- 437 22,600 <5 <5 <5 -- -- -- 0.9 6.75 0.00 -5.46 <br /> 04/12/02 2.9 <0.5 0.54 <0.5 170 16 18 12,000 <0.5 <0.5 <0.5 -- -- - 1.0 7.47 0.00 -6.18 <br /> 07/09/02 11 0.59 0.61 0.88 240 14 <50 12,000 <50 <50 <50 - - -- - -- 1.2 7.95 0.00 -6.66 <br /> 10/16/02 3,600 20 22 60 8,300 <100 84 30,000 <25 <25 <25 - - - - 1.1 9.30 0.00 -8.01 <br /> 03/17/03 47 <5.0 <5.0 <5.0 <500 - 7.0 10,000 <5.0 <5.0 <5.0 - - - - 1.3 8.02 0.00 -6.73 <br /> 05/29/03 33 <20 <20 <20 <2,000 <20 27,000 <20 <20 <20 -- -- -- -- 1.3 8.33 0.00 -7.04 <br /> 1.24 09/18/03 <5.0 <5.0 <5.0 <5.0 <500 -- <5.0 9,800 <5.0 <5.0 <5.0 <5.0 <5.0 <500 <50 <5.0 1.1 9.70 0.00 -8.46 V <br /> 12/02/03 5.3 <2.5 4.8 3.6 490 -- 4.4 6,000 <2.5 <2.5 <2.5 <2.5 <2.5 <250 <25 -- 0.1 9.08 0.00 -7.84 <br /> 03/03/04 <2.5 <2.5 <2.5 <2.5 <250 - <2.5 8,700 <2.5 <2.5 <2.5 <2.5 <2.5 -- -- -- 0.3 6.69 0.00 -5.45 <br /> I:\7-Eleven\7-11 Stores\14117\Tables\14117 04-1Q.xlsHistorical Water Page 1 of 6 <br />