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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-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<0 5 ND<O 5 ND<O 5 ND<5 NA B-2 021031DI 36,000 1,700 4,600 1,400 5,900 25 ND<5 ND<5 ND<5 ND<50 NA B-3 02103!01 ND<,W ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<0 5 ND<0 5 NO<0 5 ND<O 5 ND<5 NA MW-1 07/24/02 27.000 1,800 4,300 1,600 6,200 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 NDe0 5 ND<O 5 ND<O 5 ND<5 NA 02/19/03 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 11,000 880 430 980 2,600 ND<5 ND<5 ND<5 ND<5 ND<50 ND<5 09/12/03 21,000 1.200 79 1 300 4,400 15 ND<5 ND<5 ND<5 ND<50 ND<5 12/11/03 15 000 11-90-0- 170 1 800 ___4=600 20 ND<5 ND<5 ND<5 ND<50 ND<5 03/24104 29.000 1,900 280 2,000 1 6,800 13 ND<5 ND<5 I ND<5 ND<50 ND<5 06/18/04 11,000 710 35 940 2,600 10 ND<5 ND<5 ND<5 ND150 ND<5 08/19/04 5,700 420 ND<20 570 1,200 77 ND<5 ND<5 ND<5 ND<50 ND<5 12/30/04 4,700 370 10 480 680 NOcS ND<5 ND<5 ND<5 ND<50 ND<5 MW-2 07/24/02 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<1 ND<0 5 ND<0 5 ND<O 5 ND<0 5 ND<5 ND<0 5 11/25/02 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<0 5 ND<0 5 ND<O 5 ND<5 NA 02/19103 NO<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<0 5 ND<O 5 ND<0 5 ND<5 ND<O 5 05/09/03 ND<50 ND<0 5 ND<O 5 ND4 5 ND<1 ND<O 5 1 ND<0 5 ND<O 5 1 ND<O 5 ND<5 11 ND<0 5 09/12/03 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<1 ND<O 5 ND<0 5 ND<O 5 ND<O 5 ND<5 ]FNDD<<O0 5 12/11/03 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 5 03/24/04 NOT SAMPLED-DUMPSTER OVER WELL 06/18/04 ND<W ND<0 5 ND<0 5 ND<0 5 ND<1 11 ND<0 5 ND<0 5 ND<O 5 ND<5ffND<O 08/19/04 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 1 7 ND<0 5 ND<0 5 ND<0 5 ND<5 12/30/04 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<1 23 ND<0 5 ND<O 5 ND<O 5 ND<5 MW-3 07/24/02 ND<W ND<0 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<0 5 ND<0 5 ND<O 5 ND<5 ND<0 5 11125/02 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<t ND<0 5 ND<O 5 ND<0 5 ND<0 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<0 5 ND<5 ND<O 5 05/09/03 ND<50 ND<O 5 ND<O 5 ND<0 5 1 ND<1 ND<O 5 ND<0 5 ND<0 5 I ND<O 5 ND<5 ND-05 09/12/03 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<0 5 12/11/03 ND<50 ND<O 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 03/24/04 1 ND<50 ND<O 5 N0<05 ND<0 5 ND<1 05 ND<0 5 ND<0 5 ND40 5 ND<5 ND<0 5 06/18!04 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 42 ND<O 5 ND<0 5 ND<O 5 ND<5 ND<0 5 08/19/04 ND<50 ND<0 5 I ND<0 5 ND<0 5 ND<1 59 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<0 5 12/30/04 ND<W ND<O 5 ND<0 5 ND<0 5 ND<1 67 ND<0 5 ND<O 5 ND<O 5 ND<5 ND<O 5 NOTES All results are reported in micrograms per liter(ugll) which translates to parts per billion(ppb) Total Petroleum Hydrocarbons as Gasoline(TPH-G)and benzene toluene ethylbenzene xylenes(STEX)analyzed by EPA Method 8020/8015M or 8260B Oxygenates methyl t-butyl ether(MTBE) di-isopropyt ether(RIPE) ethyl-t-butyl ether(ETBE) tert-amyl methyl ether(TAME)and ter!-butanol(TBA) analyzed by EPA Method 8260B 1 2-dichloroethane(1,2-DCA)also analyzed by EPA Method 82608 ND<50=Not Detected at reporting limit of 50 ppb NA =Not analyzed for specified compound