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TABLE 4 Continued <br /> HISTORICAL ANALYTICAL DATA -GROUNDWATER(ug/1) <br /> San Joaquin Catholic Cemetery <br /> WELL ID DATETPHIS BENZENE TOLUENE ETHYL- XYLENES MTBE TOTAL <br /> BENZENE LEAD <br /> MW-4 05/31/94 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 NA NA <br /> i 10/26/94 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 NA NA <br /> 01/27/95 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<O 5 NA NA <br /> 07113/95 NS NS NS NS NS NS NS <br /> 10/30/95 N0<50 ND<0 3 ND<O 3 ND<O 3 ND<0 3 NA NA <br /> 01/09/96 ND<50 ND<O 3 Na<O 3 ND<O 3 ND<0 3 NA NA <br /> 04/26/96 ND<50 ND<0 3 ND<O 3 ND<O 3 ND<0 3 NA NA <br /> 09/20/96 NS NS NS NS NS NS NS <br /> 02114!97 NS NS NS NS NS NS NS <br /> 05/15/97 NS NS NS NS NS NS NS <br /> 08/13/97 NS NS NS NS NS NS NS <br /> 11/13/97 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<2 ND<5. NA <br /> MW-5 05/31194 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 NA NA <br /> 10/26/94 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 NA NA <br /> 01/27195 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<O 5 NA NA <br /> 07/13195 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<O 3 NA NA <br /> 10/30/95 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<O 3 NA NA <br /> 01/09/96 ND<50 ND<O 3 ND<O 3 ND<O 3 ND<0 3 NA NA <br /> 04/26/96 ND<50 ND<O 3 ND<O 3 N0<0 3 ND<0 3 NA NA <br /> 09/20/96 NS NS NS NS NS NS NS <br /> 02/14/97 NS NS NS NS NS NS NS <br /> 05/15/97 NS NS NS NS NS NS NS <br /> 08/13/97 NS NS NS NS NS NS NS <br /> 11/13/97 ND<50 48 10 12 3 ND<5. NA <br /> VW-1D 09/20/96 260 086 ND<O 5 ND<O 5 083 NA NA <br /> 02/14/97 140 072 ND<O 5 ND<O 5 ND<0 5 NA NA <br /> 05/15/97 170 ND<O 5 ND<1 ND<1 ND<2 NA NA <br /> 08/13/97 210 14 09 ND<0 5 10 90 NA <br /> t 11/14/97 200 57 76 14 50 60' NA <br /> 02/12/98 110 09 ND<O 5 ND<O 5 ND-2 30 NA <br /> 05/01/98 90 ND<0 5 ND<0-5--T ND<O 5 ND<2 7 NA <br /> VW-2D 09/20/96 11,000 1,300 690 510 740 NA NA <br /> 02/14/97 1,400 350 290 37 160 NA NA <br /> 05/15/97 12,000 1,000 2,400 500 1,900 NA NA <br /> 08/13197 2,400 110 96 55 97 1,800 NA <br /> 11/14/97 5,700 370 1,300 230 1,000 1,700* NA <br /> 02/12/98 1,300 120 240 60 200 650 NA <br /> 05/01/98 2,200 300 420 150 380 600 NA <br /> MW-6 05/01/98 11 ND<50 I ND<0 5 ND<O 5 ND<O 5 ND<2 ND<5 NA <br /> MW-7 05/01/98 11 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<2 ND<5 NA <br /> WELL#2 06/18/97ND,100 ND-,:O 5 ND<1 ND-0 ND-r2 NA NA <br /> Notes All data are presented in parts per billion(ppb) <br /> Total Petroleum Hydrocarbons as Gasoline(TPHG)analyzed by modified EPA Method 8015 <br /> Benzene Toluene Ethylbenzene Xylenes(BTEX)and Methyl tertiary butyl ether(MTBE)by modified EPA Method 8020 <br /> MTBE analyzed by EPA 8260 <br /> Total Lead analyzed by EPA Method 239 2 <br /> ND<0 5=Not detected at laboratory reporting limit of 0 5 ppb <br /> NA=Not analyzed for indicated parameter <br /> NS=Well was not sampled on indicated date <br /> On April 18 1991 samples from MW-1 were sent to two different laboratories for comparison purposes <br />