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i <br /> Table 2 <br /> Historical Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#14117 <br /> 2725 Country Club Boulevard <br /> Stockton,CA <br /> Well IDI Ethyl- MtBE 1,2- h- Eth- Ace- Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPH9 8020 MtBE TBA DIPE EtBE TAME DCA EDB Mnanol anol tone Notes Oxygen DTW SPT WTE <br /> TOC /L IL /L IL /L IL IL /L /L /L IL /L IL IL IL lL (mg/L feet feet feet <br /> MW-2 <br /> 0.68 08/28/99 4.5 <1 93 1.2 360 800 <200 <50 <50 <50 0.4 8.95 0.00 -8.27 <br /> 11/24/99 2.25 0.42 33.9 <0.6 665 1,990 2,370 363 <50 <50 <50 -- -- - - - 1.2 9.20 0.00 -8.52 <br /> 02/02/00 3.71 0.31 <0.3 2.15 2,740 4,880 6,300 6,780 <25 <25 <25 -- -- -- 1.3 8.96 0.00 -8.28 <br /> 05/16/00 <5 <5 <5 <10 890 -- 3,000 <2,500 <100 <100 <100 - - -- -- 0.6 6.85 0.00 -6.17 <br /> 08/08/00 0.86 <0.5 <0.5 <1 380 2,000 <2,500 <100 <100 <100 -- 0.4 8.26 0.00 -7.58 <br /> 11/15/00 <250 <250 <250 <750 1,900 -- 9,800 <12000 <500 <500 <500 -- -- - -- 0.4 8.43 0.00 -7.75 <br /> 02/07/01 9.8 0.59 <0.5 1.8 3,900 -- 11,000 <12,000 <500 <500 <500 -- - -- 0.7 7.30 0.00 -6.62 <br /> 05/23/01 1.1 <0.5 9.6 <1 3,000 - 10,000 26,000 <250 <250 <250 -- -- - -- 0.8 7.25 0.00 -6.57 <br /> 09/25/01 310 4.7 11 14 410 - 36,000 65,000 <1,000<1,000 <1,000 -- -- - -- 0.6 9.48 0.00 -8.80 <br /> 11/05/01 280 5.4 5.5 19 3,400 9,200 98,000 <5,000 <5,000 <5,000 <5,000 <5,000 - 1.0 9.24 0.00 -8.56 <br /> 01/08/02 36 <5 <5 <5 860 1,730 141,000 <5 <5 <5 - - 1.0 6.15 0.00 -5.47 <br /> 04/12/02 3 3.5 1.4 <0.5 350 270 260 67,000 <5 <5 <5 - -- 1.0 6.82 0.00 -6.14 <br /> 07/09/02 0.55 0.93 <0.5 <0.5 81 24 <200 47,000 <200 <200 <200 - -- -- 0.9 7.23 0.00 -6.55 <br /> 10/16/02 <0.5 <0.5 <0.5 <0.5 <50 12 <12 11,000 <12 <12 <12 -- -- -- 1.0 8.60 0.00 -7.92 <br /> 03/17/03 3.7 <2.0 <2.0 <2.0 <200 -- 4.8 4,100 <2.0 <2.0 <2.0 -- -- - 1.6 7.35 0.00 -6.67 <br /> 05/29/03 8.2 <2.5 <2.5 <2.5 <250 -- 15 5,700 <2.5 <2.5 <2.5 -- - -- 0.8 7.54 0.00 -6.86 <br /> 0.68 09/18/03 <1.0 <1.0 <1.0 <1.0 <100 -- 12 1,900 <1.0 <1.0 <1.0 <1.0 <1.0 <100 <10 <10 1.1 9.01 0.00 -8.33 <br /> 12/02/03 1.2 <0.50 <0.50 <0.50 170 -- 8.2 1,400 <0.50 <0.50 <0.50 <0.50 <0.50 <50 <5.0 0.1 8.32 0.00 -7.64 <br /> 03/03/04 1.2 <0.50 <0.50 0.93 490 12 2,200 <0.50 <0.50 <0.50 <0.50 <0.50 - d,a 0.2 5.99 0.00 -5.31 <br /> I:\7-Eleven\7-11 Stores\14117\Tables\14117 04-1Q.xlsHistorical Water Page 2 of 6 <br />