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TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES LOPEZ PROPERTY 1601 Tumpike Road, Stockton,California (µg/1) EPA Method 8015 EPA Method 8260 Sample Date Ethyl- 1.2 EDB benzene I-D. TPH-g TPH-d Benzene Toluene Xylenes MTBE TBA DIPE ETBE TAME DHA • 11/24/04 <50 <50 <0.5 9.8 <0.5 4.7 Q.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 02/24/05 320 <50 3.6 29 3.3 23.7 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 05/05/05 <50 NA <0.5 7.0 <0.5 4.2 4.0 <10 <1.0 <1.0 <1.0. <0.5 <0:5 08/04/05 <50 NA <0.5 14 <0.5 6.2 <1.0 <10 <1.0 <1.0 4.0 <0.5 <0.5 [W311/04/05 120 <50 5.8 43 6.7 35 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 04/19/06 <50 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 07/20/06 - - - - - - - - 10/31/06 <50 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 01/30/07 <50 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 12/11/06 190 <50 11 10 9.2 18.3 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 01/30/07 <50 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 12/11/06 1,600 <50 11 9.2 8.2 19.7 <1.0 <10 16 <1.0 <1.0 49 <0.5 01/30/07 1,100 <50 9.5 9.0 7.2 9.6 <1.0 <10 16 <1.0 <1.0 25 <0.5 12/11/06 <50 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 • 01/30/07 <50 <50 <0.5 <0.5 <0.5 <0.6 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 12/11/06 <50 <50 <0.5 <0.5 <0.5 AOO <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 <50 <50 < <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 01/30/07 <0.5 <0.5 0.512/11/06 32,000 <50 1,800 2,300 440 <1.0 <10 <1.0 <1.0 17 110 <0.5 01/30/07 26,000 <50 680 480 160 <1.0 <10 16 <1.0 40 65 <0.5 Notes: d TPH-g: Total petroleum hydrocarbons quantified as gasoline TAME: tertiary-Amyl Methyl Ether 1,2-DCA: 1,2-Dichloroethme �- MTBE: Metbyl tertiary Butyl Ether DIPE: Di-isopropyl Ether EDB: 1,2-Dibromoethane TBA: tertiary Butanol ETBE: Ethyl-tertiary-butyl ether NA: Not analyzed Advanced GeoEovironmentsl,Inc.