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Table 1 Groundwater Monitoring Data and Analytical Results Former Chevron Service Station 49-8632 575 Grant Line Road Tracy,California F WELL ID/ TOC* GWL DTW TPH-Q TPH-G 6 T x NITUE TOC DATE (ft) (mso (jt) (Ppb) (Ppb) (Ppb) (Ppb) (Ppb) (Ppb) (Ppb) (Ppb) MW-4(cont) 08/20/96 2670 1920 7 50 900' 11,000 2,300 810 520 890 <125 -- 11/05/96 2670 20 11 659 570' 5,600 820 270 200 480 <50 -- 01/07/97 2670 21 02 568 180' 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 1978 692 1,100' 1, 13,000 1,800 760 480 1,200 =<25 - 09/02/97 2670 1978 692 -- -- 1,900' - 6907 4807 1,0007 -- -' 11/19/97 2670 2033 6 37 130' _ 210 40 3 1 5 9 76 <2 5 -- 02/12/98 2670 21 29 541 150' 790 110 3 7 13 33 <2 5 -- 06/10/98 2670 2041 629 521 2200 42 33 = 51 170 <2 5 - 08/10/98 2670 1980 690 430' 3,000 680 - 89 140 _ 290 i <25 11/24/98 2670 1991 679 -2001 720 210 - 99 - 23 68 03/05/99 2670 2035 635 1311 668 208 735 175 35 2 = 434 06/01/99 26 70 1999 671 228' 2400 414 362- 106 +220 <100 - _ I 08/30/99 2670 1981 689 771 466' 95 3 4 23 15 654 <5 0 -- 11/24/99 2670 2036 634 334' 3,580 462 27 --109 341 <12 5 -- 02/03/00 2670 2077 593 4806 , 1,2001 270 35 70 200 6 44<2 07 - 06/26/00 26 70 2000 670 85 8' 530; 220 92 21 47 - 21 -- 08/11/00 2670 1974 696 726 8303 220 92 55 120 11 -- 10/31/00 2672 20 23 649 1608 3,250" 380 r 180 106 543 <25 0 -- 02/22/00 2672 2041 631 1605 1,6803 226 858 34 8 166 2 E 00 -- 05/25/01 2672 20 16 656 846 2,2003 340 14 81 210 <50 -- 07/31/01 2672 1993 679 --15 - 460` 75 2 1 - 67 23 8 1 -- 10/30/01 2672 20 19 6 53 <50 74 14 - <0 50 050 <1 5 19 -- 01/29/02 2672 2062 6 10 59 680 200 15 17 27 17 - 04/30/02 26 70 20 19 651 63 230 73 074 3 7 2 5 13 -- 07/30/0219 2670 1992 678 <50 � <50 `I <0 5 <0 5 <0 5 r3 - 9-8632 106855 • AO/30/04 - f 3 i