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Tat • <br /> Groundwater Monitoring Data and Analytical Results <br /> Tosco (Unocal) Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Well ID/ Date DTW GWE TPH(G) B T E K MTBE , <br /> TOC* (ft) (ft) (ppb) Pb) IPPB) b) (Ppb) (Ppb) <br /> t <br /> MW-1 02/21/90 660 1 7 1 9 <05 056 -- <br /> 10/18/90 DRY -- - -- -- -- -- <br /> 11/19/90 DRY -- - - -- -- -- <br /> F <br /> 12/27/90 DRY -- - - -- - - <br /> 01/28/91 DRY -- -- -- -- -- -- - <br /> 04/02/91 DRY -- - -- -- - <br /> 07118l91 DRY - - -- - - - <br /> 09/30/91 DRY - - - -- - -- - <br /> 11/14/91 DRY - - -- <br /> 04/16/92 DRY - -- - - <br /> 07/30/92 DRY - -- - - - <br /> 10/21-22192 DRY - - - - - - <br /> 01/13/93 DRY - -- - - - <br /> 1041 04/26/93 49 12 -38 71 1,400 16 <50 <50 <5 0 <br /> 07/26/93 50 13 -39 72 550 12 95 <1 0 7 5 - <br /> 10/20/93 50 65 -4024 440 05 099 <05 2 1 -- <br /> 01/17-18/94 48 18 -37 77 990 15 10 39 150 -- i <br /> 04125-26/94 46 10 -3569 180 2 1 1 7 <0 5 1 5 -- <br /> 07/25-26194 48 45 -3804 <50 <0 5 <05 <05 <05 -- <br /> 10/26-27194 4966 -3925 681 40 <05 <0 5 <05 -- <br /> 01l25-26195 4728 -36 87 <50 <0 5 <05 <0 5 <05 -- <br /> 04/26-27195 4232 -31 91 <50 <0 5 064 <0 5 075 -- <br /> 07/26/95 43 35 -3294 <50 <05 064 <05 084 -- <br /> 10/25-26195 44 23 -33 82 -- - -- -- <br /> 01124/96 41 41 -31 00 <250 <25 <25 <25 <25 - 3 <br /> 04/25/96 3675 -2634 - -- -- -- <br /> 07/24/96 37 15 -2674 <50 <0 5 <05 <05 <05 <5 0 <br /> r <br /> 10/23/96 38 88 -2847 SAMPLED SEMI-ANNUALLY - -- - -- € <br /> 01/20/97 35 52 -25 11 <50 <0 5 <05 <0 5 <05 <5 0 <br /> 07/16/97 3272 -22 31 <50 <0 5 <05 <0 5 <05 <50 # <br /> 10/15/974 INACCESSIBLE - - -- -- -- -- <br /> 12/08/974 INACCESSIBLE - -- - -- - <br /> 03/05/98 3046 -2005 <50 <0 50 <0 50 <0 50 <0 50 <2 512 06 ` <br /> 05/27/98 2671 -1630 <50 35 <0 50 <0 50 <0 50 321306 <br /> 07/21/98 2677 -1636 57 22 098 <0 50 1 7 34/276 <br /> 6981 xis/#180138 I As of 07!16199 <br />