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U TABLE 2 (Continued) 4 HISTORICAL ANALYTICAL DATA - GROUNDWATER San Joaquin Catholic Cemetery u WELL ID DATE TPHG BENZENE TOLUENE ETHYL- XYLENES MTBE TOTAL BENZENE I I LEAP t VW-1D 09/20/96 1 260 0.86 ND<0.5 ND<0.5 0.83 NA NA 02/14/97 140 0.72 ND<0.5 ND<0.5 ND<0.5 NA NA 05/15/97 170 ND<0.5 ND<1 ND<1 ND<2 NA NA 08/13/97 210 1.4 0.9 ND<0.5 1.0 90 NA 11/14/97 200 5.7 7.6 1.4 5.0 1 60* NA L 02/12/98 110 0.9 ND<0.5 ND<0.5 ND<2 30 NA 05/01/98 90 ND<0.5 ND<0.5 ND<0.5 ND<2 7 NA 08/07/98 ND>50 ND>0.5 3.2 ND<0.5 ND<0.5 17 NA U 11/05/98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 20 NA VW-2D 09/20/96 11,000 1,300 690 510 740 NA NA 02/14/97 1,400 350 290 37 160 NA NA 05/15/97 12,000 1,000 2,400 500 1,900 NA NA l �I 08/13/97 2,400 110 96 55 97 11800 NA 11/14/97 5,700 370 1,300 230 1,000 1,700- NA 02/12/98 1,300 120 240 60 200 650 NA 05/01/98 2,200 300 420 150 380 600 NA 08/07/98 550 220 31 11 13 650 NA 11/05/98 4,200 470 360 320 780 1,000 NA U, MW-6 05/01/98 ND<50 ND<0.5 ND<0.5 ND-0-5 ND<2 ND<5 NA 08/07/98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 NA 11/05/98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 NA MW-7 05/01/98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<2 ND<5 NA 08/07/98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<0.5 NA 11/05/98 ND<50 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 NA WELL#2 06/18/97---ll ND<100 I ND<0.5 ND<1 I ND<1 I ND<2 I NA NA Notes: All data are;presented in parts per billion(ppb) Total Petroleum Hydrocarbons as Gasoline(TPHG)analyzed by modified EPA Method 8015 Benzene,Toluene,Ethylbenzene,Xylenes(BTEX)and Methyl tertiary butyl ether(MTBE)by modified EPA Method 8020 "MTBE analyzed by EPA 8260 Total Lead analyzed by EPA Method 239.2 !, ND<0.5=Not detected at laboratory reporting limit of 0.5 ppb NA=Not analyzed for indicated parameter N5=Well was not sampled on indicated date On April 18.1991,samples from MW-1 were sent to two different laboratories for comparison purposes. V Q --� 1..v 1<..i