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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 I TAME TBA 1,2-DCA LEAD TANK 1 09104/96TK1-N@13 13 72 08 59 16 86 N0<O 025 NA NA NA NA NA NA I TK1-N@15 15 860 ND<2 5 22 22 110 ND<0 1 NA NA NA NA NA NA TK1-S(M15 15 1,200 ND<25 42 26 140 ND<O 25 NA NA NA NA NA NA i PIPING RUN 09/04/96 P1@4 5 45 1,600 ND<1 53 96 78 02 NA NA NA NA NA NA P2@4 4 Np<1 ND<O 005 Np<0 005 ND<0 005 ND10 005 ND<O 005 NA NA NA NA NA NA DISPENSER 09/04/96 DISPENSER 25 ND<1 ND<O 005 ND<O 005 ND<0 005 ND<0 005 ND<O 005 NA NA NA NA NA NA B-1 02/03/01 131-5 5 ND<1 ND<O 005 ND<0 005 ND<0 005 ND<O 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<O 005 NA NA B1-10 10 ND<1 ND<0 005 ND<O 005 ND<O 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 NNO 005 ND<0 005 NA NA 81 15 15 ND<1 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<0 005 ND<0 005 ND<O 005 ND<D 005 NA NA 61-20 20 ND<1 ND<O 005 ND<O 005 ND<O 005 N0<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA NA B-2 02/03/01 B2-15 15 400 03 59 11 43 0 065 ND<O 05 ND<O 05 ND<O 05 ND<O 5 NA 9 5 82-20 20 20 0 021 0 082 0 038 022 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 NA NA B-3 02/03/01 B3-15 15 58 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 Np<0 DD5 ND<O 005 ND<0 02JNA NR B3-20 20 11 0 019 ND<O 005 0 046 0 052 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<O 05 NA NA MW-1 07113/02 MW 1-15 15 1,800 22 . 43 31 150 ND<2 5 ND<2 5 ND<2 5 ND<2 5 ND<2 5 ND<2 5 NA MW 1-20 20 ND<1 ND<O 005 ND<O 005 0 026 0 012 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 NA MW1-25 25 ND<1 ND<O 005 ND<O.005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 ND<D 005 NA MW-2 07/13/02 MW2-15 1 15 ND<1 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 ND<D 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 NA MW2-20 20 ND MW2-25 25 ND<1 ND<0 005 ND<O 005 ND<O 005 ND<O 005 ND<0 005 ND<O 005 ND<Q 005 Np<0 005 ND<0 005ND<O 005 NA MW-3 07/13/02 MW3-25 25 ND<1 ND<O 005 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 NA MW3-30 30 ND<1 ND<O 005 ND<O 005 NO<O 005 ND<O 005 ND<O 005 ND<O.005 ND<O 005 ND<Q 005 ND<O 005 ND<O 005 NA MW3-35 35 ND<1 ND<O 005 ND<O 005 N0<0 005 ND<D 005 ND<O 005 ND<O 005 N0<0 005 ND<0 005 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(BTEX)analyzed by EPA Method 8020/8015M or 8260B Oxygenates methyl tertiary butyl ether(MTBE) dl-isopropyl ether(DIPE) ethyl-t-butyl ether(ETBE) tert-amyl methyl ether(TAME)and tert-butanol(TBA)analyzed by EPA Method 8260B 1 2-dichloroethane(1 2-DCA)analyzed by EPA method 82608 Total Lead analyzed by EPA Method 6010 ND<1 =Not Detected at reporting limit of 1 ppm NA =Not analyzed for indicated parameter