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TABLE 1 CUMULATIVE ANALYTICAL RESULTS -SOIL San Joaquin County Courthouse, 222 E Weber Avenue, Stockton, California OXYGENATES SAMPLE DATE SAMPLE SAMPLE ETHYL- TOTAL LOCATION SAMPLED ID DEPTH TPH-G BENZENE TOLUENE BENZENE XYLENES MTBE DIPE ETBE TAME TBA 1,2-DCA LEAD TANK 1 09/04/96 TK1-N@13 13 72 08 59 15 85 ND<O 025 NA NA NA NA NA NA TK1-N@15 15 850 ND<2 5 22 22 110 ND<0 1 NA NA NA NA NA NA TK1-SQ15 15 1,200 ND<2 5 42 26 140 ND<O 25 NA NA NA NA NA NA PIPING RUN 09/04196 P1@4 5 45 1,600 ND<1 53 95 78 02 NA NA NA NA NA NA R2@4 4ND<1 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA NA NA NA NA NA DISPENSER 09/04196 DISPENSER 2 5 ND<1 ND<0 005 ND<0 005 ND<O 005 ND<O 005 ND<0 005 NA NA NA NA NA NA B-1 02/03/01 B1-5 5 ND<1 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA NA B1-10 10 ND<1 ND-CO 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA NA B1-15 15 ND<1 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA NA B1-20 20 ND<1 N0<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA NA B-2 02/03/01 132-15 15 400 03 59 11 43 0 065 ND<O 05 ND<O 05 ND<O 05 ND<0 5 NA 95 82-20 20 20 0 021 0 082 L 0 038 0 22 ND<O 005 ND<O 005 ND-0 005 ND<0 005 ND<0 OD5 NA NA B-3 02/03/01 B3-15 15 5 8 N0<0 005 ND<O 005 ND<O 005 ND<0 005 N0<0 005 ND<0 005 ND<O 005 ND<O 005 ND<O 02 NA NA 63-20 20 11 0 019 ND<0 005 0 046 0 052 N0<0 005 ND<0 005 ND<O 005 ND<O 005 ND<0 05 NA NA MW-1 07/13/02 MW1-15 15 1,800 22 43 31 150 ND<2 5 N0<2 5 ND<2 5 ND<2 5 ND<2 5 ND<2 5 NA MW1-20 20 ND<1 ND<D 005 ND<O 005 0 026 0 012 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<0 005 ND<0 005 NA MW1-25 25 ND<1 N0<0 005 ND<O 005 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 Nd<0 005 NA MW-2 07/13/02 MW2-15 15 ND<1 ND<O ODS ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 N0<0 005 ND<O 005 ND<0 005 ND<O 005 NA MW2-20 20 ND<1 ND<O 005 ND<0 005 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA MW2-25 25 ND<1 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<0 OAF ND<0 005 NNO 005 ND<O 005 ND<O 005 NA MW-3 07/13/02 MW3-25 25 ND<1 ND<O 00$ ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA MW3-30 30 ND<1 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA MW3-35 35 ND11 ND<O 005 ND<0 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 NA NOTES All results are reported in milligrams per kilogram(mg/kg),which translates to parts per million(ppm) Sample depths In feet below ground surface,MW-3 is only location at street grade all other locations are sub-street grade Total Petroleum Hydrocarbons as Gasoline(TPH-G) benzene toluene ethylbenzene xylenes(STEX)analyzed by EPA Method 802018015M or 82606 Oxygenates methyl tertiary butyl ether(MTBE) di-isopropyl ether(DIPS),ethyl-t-butyl ether(ETBE),tert-amyl methyl ether(TAME)and tert-butanol(TBA)analyzed by EPA Method 8260B 1 2-dlchloroethane(1 2-DCA)analyzed by EPA method 8260B Total Lead analyzed by EPA Method 6010 N0<1 =Not Detected at reporting limit of 1 ppm NA =Not analyzed for indicated parameter