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TABLE 2 Analytical Results of Groundwater Samples - EPA Methods 8015M/8260B QUICK N SAVE # 1 1901 South EI Dorado Street, Stockton , California (u9/1) Sample ID Depth Depto Water Ethyl- Total (screen Date th bloc) TPH-g Benzene Toluene benzene Xylenes MTBE TBA DIPE ETRE TAME 1 ,2-DCA EDB interval) (ft 03/30/04 28.64 82,000 1,100 1,200 1,100 5,200 11,000 <10 <1 <1 <1 4.6 <0.5 06/28/04 29.32 193000 490 1,400 240 11290 145000 <10 <1 <1 85 <0.5 <0.5 a 08/30/04 30.90 38,000 500 11400 210 11160 125000 <10 <1 <1 50 15 <0.5 ---> 11/17/04 31 .76 36,000 560 880 210 1,510 18,000 <10 <1 <1 34 12 <0.5 02/14/05 30.09 233000 500 12500 180 11200 20,000 <10 <1 <1 38 9.2 <0.5 05/17/05 27.43 21,000 750 11300 320 1,520 12,000 <10 <t <1 120 13 <0.5 08/23/05 28.48 11 ,000 600 96 270 10050 11,000 <10 <1 <1 40 10 <0.5 11/16/05 - 21 ,000 89 41500 11 253 15,000 <10 <1 <1 59 3.4 <.5 li 02/06/06 29. 19 34,000 160 11100 780 2,910 61200 <10 <1 <1 6.8 5.9 <0.5 05/10/06 25.92 21,000 160 95 260 11150 6.2 <10 <1 <1 2.9 5.8 <0.5 08/07/06 25.54 37100 49 3,400 47 156 2.2 <10 <1 <1 1 .6 1 .7 <0.5 11/07/06 26.34 22,000 250 1 ,100 920 5,000 33100 <10 <1 <1 16 9.8 <0.5 02/07/07 26.28 173000 800 350 460 1,370 31900 <10 16 <1 . 28 <0.5 <0.5 05/07/07 25.71 16,000 160 350 600 11000 950 <10 <1 <1 3.0 4.8 <0.5 - 08/07/07 26.16 45,000 380 31400 700 4,800 900 <10 <1 <1 6.9 13 <0.5 MW,2 11/07/07 26.74 532000 900 11800 850 31600 21000 <10. <1 <1 24 17.0 <0.5 (25-45' bsg) 02/07/08 25.61 42,000 15100 800 320 11320 31500 <10 <1 <1 22 35.0 <0.5 05/07/08 24.52 405000 650 730 380 930 850 <10 <1 <1 8.3 21.0 <0.5 08/05/08 25.67 20,000 57 220 80 326 140 <10 <1 <1 17 <0.6 <0.5 'I 10/30/08 26.05 20,000 38 270 130 450 150 <10 <1 <1 11 <0.5 <0.5 08/12/09 25.50 20,000. 30 36 20 52 100 91200 <1 <1 <1 <0.5 <0.5 11/02/09 ' 26.26 45900 12 17 11 23 31 21100 <1 <1 <1 <0.5 <0.5 _ 11/13/09 ' 26.21 11820 33.7 5.0 <5.0 144 450 23800 <25 <10 <25 <2.5 <10 01/21/10 25.68 9,800 51 25 22 58 120 <10 <1 <1 5.1 <0.5 <0.5 07/15/10 23.42 500 2.7 2.2 <0.5 2.6 7.0 <10 <1 <1 <1 <0.5 <0.5 01/19/11 23. 16 17100 14.0 11 .0 2 5.7 17.0 <10 <1 <1 <1 <0.5 <0.5 08/15/11 21 .30 200 1.2 2.8 2 4.1 3.0 410 <1 <1 <1 <0.5 <0.5 03/15/12 22.53 330 13.0 8.5 6 11.4 2.7 330 <1 <1 <1 <0.5 <0.5 09/14/12 23.10 240 2.9 3.4 2 6.9 <1 200 <1 <1 <1 <0.5 <0.5 02/15/13 21 .31 21400 180 84 240 437 79 <10 <1 <1 <1 <0.5 <0.5 08/26/13 22.03 31000 240 65 260 268 60 <10 <1 <1 3.8 7.1 <0.5 01/07/14 24.82 4,000 260 130 580 691 64 <10 <1 <1 4,4 8.2 <0.5 07/10/14 22.32 82500 620 12 27 99 27 <10 <1 <1 8.9 12 Advanced GeoEnvironmental, Inc.