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TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES - EPA METHODS 8015M/826013 RALPH SQUARE-BUI 2122 South Airport Way, Stockton, California (µg/1) Sample DTW EPA 8015M Volatile Aromatic Com ounds EPA Method 8260B WellI.D. Ethyl Total Date (feet) TPH-g Benzene Toluene benzene Xylenes ;;BE TBA DIPE ETBE TAME EDB 1,2-DCA • 07/06/07 38.87 200 9.2 8.7 <0.5 9.4 15 <10 <1.0 <1.0 <1.0 <0.5 <0.5 MW-4 10/09/07 38.81 190 1.2 <0.5 <0.5 4.4 <1.0 <10 <1.0 <1.0 <1.0 <0.5 <0.5 01/22/08 37.92 150 <0.5 <0.5 <0.5 <0.6 2.5 <10 <1.0 <1.0 <1.0 <0.5 <0.5 04/29/08 36.47 400 <0.5 <0.5 <0.5 <0.6 <0.5 <10 <1 <1 <1 <0.5 <0.5 07/06/07 38.70 1,200 <0.5 <0.5 <0.5 <0.6 1,100 <10 <1.0 <1.0 <1.0 <0.5 35 MW-5 10/09/07 38.63 1,500 <0.5 <0.5 <0.5 <0.6 1,300 <10 <1.0 <1.0 <1.0 <0.5 36 01/22/08 37.73 5,300 <0.5 <0.5 <0.5 <0.6 5,300 <10 <1.0 <1.0 <1.0 <0.5 36 04/29/08 36.29 10,000 <0.5 <0.5 <0.5 <0.6 9,600 <10 <1 <1 <1 <0.5 31 07/06/07 38.30 <50 <0.5 <0.5 <0.5 <0.6 21 <10 <1.0 <1.0 <1.0 <0.5 2.8 MW-6 10/09/07 38.23 110 <0.5 <0.5 <0.5 5.1 <1.0 <10 <1.0 <1.0 <1.0 <0.5 6.2 01/22/08 37.30 <50 <0.5 <0.5 <0.5 <0.6 14 <10 <1.0 <1.0 <1.0 <0.5 3.7 04/29/08 35.90 <50 <0.5 <0.5 <0.5 <0.6 10 <10 <1 <1 <1 <0.5 <0.5 MW-7 04/29/08 36.45 190 <0.5 <0.5 <0.5 <0.6 <1 <10 <1 <1 <1 <0.5 <0.5 MW-8 04/29/08 36.28 100 290 <0.5 <0.5 <0.5 <0.6 <1 <10 <1 <1 <1 <0.5 <0.5 MW-9 04/29/08 36.00 <50 <0.5 <0.5 <0.5 <0.6 <1 <10 <1 <1 <1 <0.5 <0.5 MW-10 04/29/08 35.85 <50 <0.5 <0.5 <0.5 <0.6 <1 <10 <1 <1 <1 <0.5 <0.5 • MW-11 04/29/08 34.10 5 100`I 110 480 25 119 3 200 <10 <1 <1 <1 <0.5 <0.5 Notes: Itoµg/I: micrograms per liter DTW: depth to ground water TPH-g: Total petroleum hydrocarbons quantified as gasoline MTBE: Methyl-tertiary-butyl ether TBA: tertiary-butanol DIPE: Di-isopropyl ether ETBE: Ethyl-tertiary-butyl ether TAME: tertiary-amyl methyl ether EDB: ethylene dibromide 1,2-DCA: 1,2-Dichloroethane Advanced GeoEnvironmental,Inc.