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I TABLE 2 CUMULATIVE ANALYTICAL RESULTS -GROUNDWATER San Joaquin County Courthouse, 222 E Weber Avenue, Stockton California OXYGENATES SAMPLE DATE ETHYL- LOCATION SAMPLED TPH-G BENZENE TOLUENE BENZENE XYLENES MTBE DIPE ETBE TAME TBA 1,2-DCA B-1 02/03/01 120 24 ND<0 5 52 Is 68 ND<O 5 ND<0 5 ND<O 5 ND<5 NA B-2 02!03!01 36,000 1,700 4,600 1,400 5,900 25 ND<5 ND<5 ND<5 ND<50 NA B-3 02/03/01 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND-05 ND<5 NA MW-1 07/24/02 27,000 9,800 4,300 1,600 5,200 45 ND<5 ND<5 ND<5 ND<50 ND<5 11/25/02 25,000 1,000 2,400 1,200 3,700 19 ND<O5 ND<05 ND<05 ND<5 NA 02!19103 18,000 1,200 1,300 1,000 3,200 ND<5 ND<5 ND<5 ND<5 ND<50 ND<5 05/09/03 11,000 1 880 430 980 2,600 ND<5 ND<5 ND<5 ND<5 ND<50 ND<5 09/12103 21,000 1 1,200 79 1,300 4,400 15 ND<5 ND<5 ND<5 ND<50 ND<5 12/11/03 15,000 1,900 170 1,800 4,600 20 ND<5 ND<5 ND<5 ND<50 ND<5 03/24/04 29,000 1,900 280 2,000 6,800 13 ND<5 ND<5 ND<5 ND<50 ND<5 06/18/04 11,000 710 35 1 940 2,600 10 ND<5 ND<5 ND<5 ND<50 ND<5 08!19!04 5,700 420 ND<20 570 1,200 77 ND<5 ND<5 N13<5 ND<50 ND<5 MW-2 07/24/02 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<O 5 ND<0 5 ND<0 5 ND<O 5 ND<5 ND<0 5 11/25/02 ND<50 ND<O 5 ND<O 5 ND-05 ND<1 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 NA 02!19/03 ND<50 ND<O 5 ND<O 5 ND<5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<O 5 05/09/03 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<O 5 09/12103 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND-0 5 140<0 5 ND<O 5 ND<O 5 ND<S ND<0 5 12111!03 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<7 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<0 5 03/24/04 NOT SAMPLED DUMPSTER OVER WELL 06/18/04 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 11 ND<O 5 ND<0 5 ND<O 5 ND<5 ND<0 5 08/19/04 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 1 7 ND<O 5 ND<O 5 ND<O 5 ND<5 NDeO 5 r MW-3 07/24/02 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<O 5 11/25/02 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<O 5 ND<0 5 ND<O 5 ND<5 NA 02/19/03 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<5 ND-0 5 05/09/03 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<5 ND<O 5 09/12/03 ND<50 ND<O$ ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<5 ND<0 5 ND<5 ND<O 5 12111/03 N0<50 ND<O 5 ND<O 5 ND-40 5 ND<1 ND<0 5 ND<0 5 ND<0 5 ND<O 5 ND<5 ND-0 5 03/24/04 ND<50 ND<O 5 ND-05 ND<0 5 ND<1 05 ND<O 5 ND<0 5 ND<O 5 ND<5 ND<o 5 06/18/04 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 1 42 ND<O 5 L ND<0 5 ND<O 5 ND<5 ND<O 5 08/19/04ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 59 ND<0 5 ND<0 5 ND<0 5 ND<S ND<0 5 r NOTES All results are reported in micrograms per liter(ugA) which translates to parts per billion(ppb) Total Petroleum Hydrocarbons as Gasoline(TPN-G)and benzene toluene ethylbenzene xylenes(BTEX)analyzed by EPA Method 8020/8015M or 8260E Oxygenates methyl-t-butyl ether(MTBE) di-isopropyl ether(DIPE) ethyl-t-butyl ether(ETBE) tart amyl methyl ether(TAME)and Cert-butanol(TSA) analyzed by EPA Method 8260B 1 2-dichloroethane(1 2-DCA)also analyzed by EPA Method 8260E ' ND<50=Not Detected at reporting limit of 50 ppb NA =Not analyzed for specified compound