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Oel <br /> Groundwater Monitoring Data and Analytical Results <br /> Former Chevron Service Station#9-8632 <br /> 575 Grant Line Road <br /> Tracy,California <br /> WELL ID/ TOC* GWE DTW TPH-D TPH-G B T E X MTBE TOG <br /> DATE (A) (msl) (A) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppbJ <br /> i <br /> MW-3(cont) <br /> 04/30/0319 2723 2043 680 <50 500 9 <0 5 13 4 180 -- <br /> 07/30/0319 27 23 1980 743 80 190 2 <0 5 1 <0 5 160 <br /> 10/29/0319 27 23 1996 7 27 <50 71 l <0 5 <0 5 <0 5 110 <br /> 01/26/0419 2723 2047 676 <50 310 4 <0 5 3 06 110 <br /> 04/27/0419 2723 2064 6 59 <50 <50 <0 5 <0 5 <0 5 <0 5 9 -- <br /> 07/30/0419 2723 1940 7 83 <50 <50 <0 5 <0 5 <0 5 <0 5 6 <br /> 10/28/049 2723 20 12 7 11 <50 <50 2 <0 5 <0 5 <0 5 44 01/31/05 19 2723 2043 680 50 110 1 <0 5 1 <0 5 54 -- <br /> 04/29/0519 2723 2024 699 54 170 11 <0 5 23 5 53 -- <br /> 07/29/0519 2723 1985 738 380 150 8 <0 5 1 <0 5 230 - <br /> 10/28/0519 2723 2015 708 12026 <50 1 <0 5 <0 5 <0 5 36 -- <br /> MW-4 <br /> 05/12/95 2670 1920 7 50 -- -- -- -- -- -- -- _ <br /> 09/07/95 2670 1954 7 16 2,000' 14,000 2,100 290 470 690 <br /> 12/01/95 2670 1989 681 1,8001 11,000 1,900 620 470 620 -- <br /> 02/07/96 2670 21 34 5 36 6501 4,700 730 210 260 590 <50 -- <br /> 05/07/96 2670 20 12 658 1,300' 9,500 1,300 350 350 550 <100 -- <br /> 08/20/96 2670 1920 750 9001 11,000 2,300 810 520 890 <125 <br /> 11/05/96 2670 20 11 659 5701 5,600 820 270 200 480 <50 -- <br /> 01/07/97 2670 21 02 568 1801 1,100 190 16 42 110 <12 <br /> 06/05/97 2670 20 13 657 64 3,300 610 140 130 160 <25 - <br /> 09/02/97 2670 1978 692 1,100` 13,000 1,800 760 480 1,200 <25 <br /> 09/02/97 2670 1978 692 -- -- 1,9007 6907 4807 1,0007 -- <br /> 11/19/97 2670 20 33 637 1301 210 40 3 1 5 9 76 <2 5 <br /> 02/12/98 2670 21 29 541 150 790 110 3 7 13 33 <2 5 <br /> 06/10/98 26 70 2041 629 521 2,200 42 33 51 170 <2 5 <br /> 08/10/98 2670 1980 690 4301 3 000 680 89 140 290 <25 -- <br /> 11/24/98 2670 1991 679 2001 720 210 99 23 68 <12 -- <br /> 03/05/99 2670 2035 635 131 668 208 735 175 35 2 434 <br /> 9-8632 xls/#386855 5 As of 10/28/05 <br />