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M WTA 3 ON W i IM M Mug*" CUMULATIVE ANALYTICAL DATA (1999) - GROUNDWATER San Joaquin Catholic Cemetery OXYGENATES WELL DATE TPHG BENZENE TOLUENE ETHYL- XYLENES MTBE DIPE ETBE TAME TBA 1,2-DCA ID BENZENE VW-1D 02/18/99 4,100"" ND<O 5 ND<O 5 ND<0 5 ND<0 5 10 NA NA NA NA NA 05/20/99 260** ND<0 5 07 ND<0 5 ND<0 5 67 NA NA NA NA NA 08/26/99 200 ND<0 5 ND<O 5 ND<0 5 ND<O 5 75 NA NA NA NA NA 11/12/99 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 68 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<O 5 VW-2D 02/18/99 3,200 70 ND<5 140 32 870 NA NA NA NA NA 05/20/99 1,200 16 ND<5 84 ND<5 950 NA NA NA NA NA 08/26/99 440 ND<1 10 52 ND<1 530 NA NA NA NA NA 11/12/99 760 24 30 55 26 410 ND<O 5 ND<O 5 ND<O 5 64 37 MW-6 02/18/99 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 NA NA NA NA NA 05/20/99 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<5 NA NA NA NA NA 08/26/99 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<5 NA NA NA NA NA 11/12/99 ND-<50 ND<O 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<O 5 ND<0 5 ND<O 5 ND<5 ND<O 5 MW-7 02/18/99 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 NA NA NA NA NA 05/20/99 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<0 5 ND<5 NA NA NA NA NA 08/26/99 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<5 NA NA NA NA NA 11/12/99 ND<50 ND<0 5 1 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 ND<O 5 1 ND<0 5 ND<5 ND<0 5 Notes All data are presented in parts per billion(ppb) Total Petroleum Hydrocarbons as Gasoline(TPHG)analyzed by EPA Method 8260B Benzene toluene ethylbenzene and xylenes analyzed by EPA Method 8260B Oxygenates Methyl-t-butyl ether(MTBE),Onsopropyl 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 "Results indicate hydrocarbons that are not typical of gasoline ND<0 5=Not detected at laboratory reporting limit of 0 5 ppb NA=Not analyzed for indicated parameter