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1 Table 1 Groundwater Monitoring Data and Analytical Results Former Chevron Service Station#9-8632 575 Grant Line Road Tracy,California WELL tDf TOC* GWE DTW TPH-D TPH-G B T E x MTBE TOG DATE (ft) (MSI) Ute (Ppb) (Ppb) (PPI) (Ppb) (Ppb) (PP b) (Ppb) (Ppb) �I MW-4 It 05/12/95 2670 1920 750 -- 09/07/95 2670 1954 7 16 2,000' 14,000 -2,100 - 290 470 690 - -- 12/01/95 2670 1989 681 1,8001 III 11,000 1 900 620 470 1 620 -- -- J 02/07/96 2670 21 34 5 36 650', 4,700 730 210 260 590 <50 -- 05/07/96 2670 20 12 658 11300' :I 9,500 1,300 350 350 550 <100 - 08/20/96 2670 1920 750 900' iE 11,000 2,300 810 520 890 <125 -- 11/05196 2670 20 11 659 570' EI 5,600 820 27_0 200 480 <50 -- 01/07197 26 70 21 02 5 68 180 t 1 100 190 16 42 110 <12 - 06/05/97 2670 20 13 657 641 3,300 610 140 130 160 <25 -- 09/02/97 2670 1979 692 1,1001 M 13,000 1 800 _ -760 480 1 200 <25 -- 09/02/97 2670 1978 692 -- -- 1,900 690 480' 1 000' 11/19/97 26 70 20 33 637 13011 210 40 y 3 l 5 9 76 <2 5 -- 02/12/98 26 70 21 29 5 41 1501, 790 110 3 7 13 33 <2 5 - 06/10/98 2670 2041 629 52' 2,200 42 33 51 170 <2 5 -- 08/10/98 2670 1980 690 430' 3,000 680 89 140 290 <25 -- 11/24/98 2670 1991 679 200'1 720 210 99 23 - 68 - <12 -- r 03/05/99 2670 2035 6 35 131' 668 208 7 35 17 5 35 2 434 -- 06/01/99 2670 1999 671 228' 2400 414 362 106 220 <100 -- 08/30/99 2670 1981 689 77' 466' 95 3 4 23 15 65 4 <5 0 -- 11l24/99 2670 20 36 634 334' 3,580 462 27 109 341 <12 5 -- 02/03/00 2670 2077 593 4806 1,2003 270 35 f 70 200 6 41<2 07 -- 06/26/00 2670 2000 670 85 8" f 5303 220 92 21 47 21 -- 08/11/00 2670 1974 696 726 8303 220 92 55 i 120 11 -- �1 1 10/31/00 2672 2023 649 1608 1 3,250" 380 180 106 543 <25 0 -- 02/22/01 2672 2041 631 1605 I 1,6803 226 858 348 166 -20 0 -- 05/25/01 2672 20 16 656 846 2,200' 340 14 81 210 <50 -- 9-8632 106855 ! A48/31/05