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TABLE 2 CUMULATIVE ANALYTICAL RESULTS -GROUNDWATER San Joaquin County Courthouse, 222 E Weber Avenue, Stockton, California OXYGENATES SAMPLE DATE ETHYL- LOCATION SAMPLED TpH_3 BENZENE TOLUENE BENZENE XYLENES MTBE DiPE ETBE TAME TBA 1,2-DCA B-1 02/03/01 120 24 ND<O 5 52 is 68 ND<O 5 ND<0 5 ND<0 5 ND<5 NA B-2 02!03!01 36,000 1,700 4,600 1,400 ��ND�JOSJ 25 ND<5 NO<5 ND<5 ND<50 NA B-3 02/03/01 ND<50 ND<O 5 ND<O 5 ND<05 ND<0 5 ND<O 5 NDcO 5 ND<0 S ND<5 NA MWA 07/24/02 27,000 1 800 4,300 1,60o 5,200 45 ND<5 ND<5 ND<5 ND<50 ND<5 11125/02 25,000 1,000 2400 1,200 3,700 19 ND<O S NO-05 ND<05 ND<5 NA 02119/03 18,000 1,200 1,300 1,000 3,200 ND<S ND<6 ND<5 ND<5 ND<W ND<5 05/09/03 11,000 880 430 980 1 2,600 ND<5 ND<5 ND<5 ND<5 ND<50 ND<5 09/12/03 21,000 11200 79 1,300 4,400 15 ND<5 ND<5 ND<5 ND<50 ND<5 12/11/03 15,000 1 900 170 11-80-0- 4 600 20 ND<5 ND<5 ND<5 ND<50 ND<5 03/24/04 29,000 1 900 260 2.000 6,800 13 ND<5 ND<5 ND<5 ND<50 ND<5 06/18/04 11,000 710 35 940 2,600 10 ND<5 ND<5 NDc5 ND<50 ND<5 08/18/04 5,700 420 ND<20 570 1,200 77 ND<5 NO<5 ND<5 ND<50 ND<5 12/30/05 4,700 370 10 480 680 ND<5 ND<5 ND<5 ND<5 ND<50 ND<5 03/23/05 6,100 640 57 6480 1,400 65 ND<5 ND<5 ND<5 ND<50 ND<5 MW-2 07/24/02 ND<50 ND<O5 ND<05 ND<05 NDO ND<O5 ND<O5 ND-05 NO<05 ND<5 Np<05 I 11/25/02 ND<50 ND<O 5 ND<O 5 NO<0 5 ND<1 ND<0 5 ND<0 5 ND<O 5 ND<0 5 ND<5 NA 02/19/03 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<O 5 NO<0 5 ND<O 5 ND<0 5 ND<5 ND<O 5 05/09/03 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<O 5 09112103 ND<50 ND<O5 ND<O5 ND<05 ND<t ND<05 Na<05 ND<05 ND<05 ND<5 ND<o5 12111/03 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<0 5 03124/04 NOT SAMPLED DUMPSTER OVER WELL 06/18/04 ND<50 ND<0 5 ND<O 5 NO<0 5 ND<1 11 ND<O 5 ND<O 5 ND<O 5 NO<5 ND<0 5 08/19/04 ND<50 ND<05 ND--05 ND<05 ND<t 17 ND<05 ND-05 ND<05 ND<5 ND<05 12130/05 Np<50 ND<0 5 ND<0 5 ND<0 5 ND<1 23 ND<O 5 ND<D 5 ND<0 5 ND<5 ND<0 5 03/23/05 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 1 29 ND<O 5 ND<O 5 ND<O 5 ND<5 ND<O 5 MW-3 07!24102 ND<50 ND-05 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5FND 5 11/25/02 ND<50 ND<O 5 ND<0 5 ND<0 5 ND0 ND<0 5 ND<0 5 ND<O 5 ND<O 5 ND<5 02/19/03 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<0 5 ND<0 5 NO<0 5 ND<55 05/09/03 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<O 5 ND<0 5 ND<O 5 ND<0 5 ND<55 09/12/03 ND<50ND<O5 ND<O5 ND<05 ND<7 ND<O5 ND<05 ND<05 ND<05 ND<5 ND<05 12 11103 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<O 5 ND<0 5 ND<O 5 NO<5 ND<5 ND<O 5 03124/04 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 05 ND<O 5 1 ND<O 5 ND<0 5 ND<5 NO<0 5 08/18/04 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 42 ND<O 5 ND<0 5 ND<O 5 ND<5 ND<O 5 08/19/04 ND<50 ND<0 5 ND<O 5 ND<0 5 ND-1 59 ND<0 5 ND<O 5 ND<0 5 ND<5 ND<0 5 12130/05 NO<50 Np<0 5 ND<0 5 ND<0 5 ND0 67 ND<0 5 ND<0 5 ND<O 5 ND<5 ND<0 5 03/23/05 1 ND<50 ND<O 5 ND<0 5.T NO<0 5 ND 1--60-- 1 60 ND<0 5 ND<0 5 ND<0 5 ND<5 11 ND<O 5 NOTES All results are reported in micrograms per liter(ugA) which translates to parts per billion(ppb) Ile Total Petroleum Hydrocarbons as Gasoline(TPH-G)and benzene toluene ethylbenzene xylenes(BTEX)analyzed by EPA Method 8020/8015M or 8260E Oxygenates methyl-t-butyl ether(MTBE) &,sopropyl ether(RIPE) ethyl-t-butyl ether(ETRE) tart-amyl methyl ether(TAME)and tert-butanol(TBA) analyzed by EPA Method 82608 1 2-dichloroethane(1 2-DCA)also analyzed by EPA Method 82808 ND<50=Not Detected at reporting limit of 50 ppb NA =Not analyzed for specified compound