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TABLE A HISTORIC GROUNDWATER DATA(November 1993--July 2005) CANEPA'S CAR WASH-PACIFIC AVENUE Gasoline DTW GWE B T E X MTBE TPH-G Oxygenates! Additives EPA Method ((602)/(8021B)/ (602)1(80216)1 (602)1(8021 B)/ (602)/(80218)/ (602)1(8021B)/ 8015m 82608 8020)/82608 8020/82606 8020)/8260B 8020 182608 8020 1826013 WELL ID TOC ELEV I0; ATE) 11/1/1993 5450 -3902 1548 12/7/1993 5370 -3822 12/29/1993 5320 -3772 ' 3/30/1994 51 50 -3602 611711994 5072 -3524 4 810 3 120 123 1 410 NA 51 5 NA 12/8/1994 51 71 -3623 39 000 36 000 2 400 14 000 NA 130 NA 3/16/1995 4970 -3422 8200 5 100 ND 7 5 2 600 NA 21 NA 6/12/1995 4839 -3291 15 000 10 000 720 3 700 NA 38 NA ' 8/1/1996 4382 -2834 4 400 2 400 280 1 200 480 14 NA 10/21/1996 4442 -2894 2 600 1 800 584 2 900 200 95 NA 1/16/1997 42 13 -2665 2200 1 500 260 870 110 65 NA 4/2/1997 3996 -2448 1 600 840 140 440 120 64 NA ' 7/18/1997 4090 -2542 3 900 1 800 340 1 100 410 79 NA 10/22/1997 41 18 -2570 1 900 1 200 160 670 110 75 ND 1/21/1998 39 17 -2369 6 800 590 610 770 570 19 ND 4/23/1998 3586 -2038 5 500 270 370 ND 390 14 ND 7/22/1998 3544 -1996 4 900 200 400 NO 220 32 ND 10/23/1998 3569 -2021 4 300 620 450 1 000 310 12 ND 1/22/1999 3423 -1875 5 100 460 470 222 1 300 12 ND 4/21/1999 3260 -1712 1 100 620 120 370 680 54 ND 7/27/1999 3376 -1828 2 600 1 300 84 600 3 800 88 ND 10/14/1999 3445 -1897 2200 1 400 210 760 640 82 NA 1/15/2000 3344 -1796 900 440 79 310 460 36 ND 4/12/2000 31 88 -1640 940 620 81 310 840 5 NA 7/11/2000 3287 -1739 400 110 49 86 330 066 NA ' 10/12/2000 3505 -1957 670 230 60 150 1 100 3 NA 1/10/2001 3285 -1737 554 305 691 210 450 247 NA 4/1112001 32 14 -1666 340 130 34 110 170 1 7 NA 7/20/2001 3409 -1851 230 66 40 70 1 200 1 0 NA 10/26/2001 3510 -1962 680 320 77 240 390 3 NA 1 1/10/2002 3425 -1877 744 286 95 245 580 26 NA 4/11/2002 3311 -1763 33 23 13 1 31 16 027 NA 7/2/2002 3393 -1845 300 120 57 140 130 1 4 NA 10/15/2002 3749 -2201 110 52 39 64 140 45 NA i 1/15/2003 3662 -21 14 1 100 120 80 170 60 34 <5 0-<130 4/18/2003 3561 -2013 1,400 94 63 143 630 63 <5 0-<130 7/25/2003 3678 -21 30 590 54 <0 5 115 220 22 <0 5-<20 11/9/2003 3853 -2305 4 600 840 230 630 1 100 11 72 TBA ! 1/30/2004 3794 -2246 2 900 260 <50 329 440 38 <10-<2 000 5/7/2004 3772 1 -2224 740 37 25 45 160 1 7 <1 0-<40 7/22/2004 3944 1 -2396 4 400 150 110 1 170 210 2 1 <1 0-<40 10/1412004 Pum in well no measurements or groundwater samples collected 1/21/2005 45,27 -29 79 8 40D 3 800 13 3 280 7 200 30 <1 0-<40 i 4/13/2005 4696 -31 481 4 600 2 700 190 1,800 6 000 NT 7100-<1000 7/28/2005 3922 -2374 8 180 4 480 241 3 370 12 300 24 3 7100-71 000 71000 d.i i ! ! P 41000_pr111707 Canepa%l707D Groundwater Monitonng4ReportsSReport512005 QW2005 3rd gtAAppendix5C1 1707 Data July 2005 AS Page 1 of 10