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JIM M low M am am M an No am TABLE 2 CUMULATIVE ANALYTICAL RESULTS -GROUNDWATER San Joaquin County Courthouse,222 E Weber Avenue, Stockton, California OXYGENATES SAMPLE DATE i 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 62 16 68 ND<O 5 ND<O 5 ND<o 5 ND<5 NA B-2 02/03/01 36,000 1,700 4,600 1,400 6,900 25 ND<5 ND<5 ND<5 ND<50 NA B-3 02/03/01 ND<50 ND<o 5 ND<0 5 ND<O 5 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5ND<5 NA MW4 07!24!02 27,000 1,800 4,300 1,600 5,200 46 ND<5 ND<5 ND<5 ND<5o ND<5 11/25/02 26,000 1,000 2,400 1,200 3,700 19 ND<O 5 ND<o 5 ND<O 5 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 11,000 880 430 980 2,600 ND<5 ND<5 ND<5 ND<5 ND<50 ND<5 MW-2 07/24/02 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<0 5 ND<0 5 ND<o 5 ND<O 5 Nd<5 N0<0 5 11/25/02 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<1 ND<o 5 ND<O 5 ND<0 5 ND<O 5 ND<5 NA 02!19!03 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<O 5 05!09!03ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<o 5 ND<O 5 ND<5 ND<O 5 MW-3 07/24/02 ND<50 ND<O 5 ND<0 5 N0<05 ND<1 ND<O 5 ND<O 5 ND<O 5 1 ND<0 5 ND<5 ND<O 5 11/25/02 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<1 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 NA 02!19103 ND<50 N0<0 5 ND<0 5 ND<O 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<5 ND<O 5 05/09/03 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<i_][ ND<O 5 ND<O 5 N0<0 5 ND<0 5 Nd<5 ND<0 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(BTEX)analyzed by EPA Method 8020/8015M or 8260E Oxygenates methyl-t-butyl ether(MTBE) di-isopropyl 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)analyzed by I=PA Method 82606 ND<50=Not Detected at reporting limit of 50 ppb NA =Not analyzed for sperafred compound 1