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T1 <br /> Groundwater Monitoring and Analytical Results <br /> Tosco(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL ID/ DATE DTW $I GWE TPH-G B T E X MTBE <br /> TOC* (ft) (ft bgs) (MSI) (ppb) (Ppb) (ppb) (Ppb) (Ppb) (Ppb) <br /> VW-4 07/17/97 3413 25 5-50 5 -- 670 <0 5 45 61 98 5 1 <br /> (cont) 10/15/97 DRY -- -- -- -- -- -- <br /> 12/08/97 WELL CONNECTED TO VES -- -- -- -- -- -- <br /> 03/05/98 3182 -- <50 <0 50 <0 50 <0 50 <0 50 351396 <br /> 05/27/98 2855 -- 3,900 <10 <10 <10 <10 <10/<5 06 <br /> 07/21/98 2853 -- 2,5009 97 <0 50 <0 50 57 <5 0/<2 06 <br /> 10/14/98 2954 14000 9 <50 <50 120 370 <250/<666 <br /> 01125-26/99 2874 -- 20,000'2 <50 100 <50 440 <2501156 <br /> 04/19-20/99 2623 - 14,000 <50 <50 82 170 <250/15' <br /> 07/15-16/99 2754 -- 17,000 <50 <50 <50 <50 <250/196 <br /> 10125-26199 2936 -- 22,00013 <50 <50 70 290 <250/276 <br /> 01/27-28/00 2885 -- 19,00013 66 <50 190 1,300 431516 <br /> 06/26-27/00 2609 -- 3,47014 <5 00 <5 00 <5 00 432 68311,1106 <br /> 1176 09/22-23/00 2865 -1689 12,00013 <100 <100 <100 200 2,800/1606 <br /> 12/26-27/00 2858 -1682 11,10014 <12 5 <125 275 167 140/1726 <br /> 03107-08101 28.27 -1651 12,70014 128 <10 0 794 413 350/3216 <br /> VW-7 <br /> NA 08/21/99 2857 55 0-60 0 -- 37,000 2,500 6,100 610 7,000 <250/5106 <br /> 10125-26199 2954 - 33,00013 2,900 6,800 680 7,800 <500/4 76 <br /> 01/27-28100 2902 -- 23 00013 2,000 5,600 860 9,900 1201756 <br /> 06/26-27100 2627 -- 28,70013 1,560 3,800 <50 0 8,310 <500/41 46 <br /> 1167 09/22-23/00 2843 -1676 8,50013 610 2,200 12 4,900 3001356 <br /> 12/26-27/00 2834 -1667 37,90013 1,420 3,330 328 10,000 <500/<100' <br /> 03/07-08/01 2803 -1636 34,400i3 853 2,750 394 8,900 <5001<40 O6 <br /> PTW-1 <br /> 01125-26/99 2891 52 5-72 5 -- <50 <0 50 <0 50 <0 50 1 5 9 418 46 <br /> 04/19-20/99 2642 - <50 <0 50 <0 50 <0 50 <0 50 42/34 6 <br /> 07/15-16/99 2782 -- <50 <0 50 <0 50 <0 50 <0 50 <2 5/<2 06 <br /> 6981 xIs/#180138 19 As of 03108/01 <br />