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Ta <br /> Groundwater Monitoringand Analytical Results <br /> Tosco(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL ID/ DATE DTW S1 GWE TPH-G B T E g MTBE <br /> TOC* (ft} (ft bV) (WO (Ppb) (Ppb) (Ppb) (Ppb) (ppb) (Ppb) <br /> MW-1 02/21/90 -- 51 0-55 0 660 1 7 19 <05 056 -- <br /> 10/18/90 DRY <br /> 11/19/90 DRY <br /> 12/27/90 DRY <br /> 01/28/91 DRY <br /> 04/02/91 DRY -- - - -- -- -- <br /> 07/18/91 DRY <br /> 09/30/91 DRY <br /> 11/14/91 DRY <br /> 04/16/92 DRY <br /> 07/30/92 DRY <br /> 10/21-22/92 DRY <br /> 01/13/93 DRY -- -- -- -- --1041 04/26/93 49 12 -3871 1,400 16 <5 0 <5 0 <5 0 -- <br /> 07/26/93 5013 -3972 550 12 95 <10 75 - <br /> 10/20/93 5065 -4024 440 05 099 <0 5 21 -- <br /> 01/17-18/94 4818 -3777 990 15 10 39 150 -- <br /> 04/25-26194 4610 -3569 180 21 17 <0 5 15 -- <br /> 07/25-26194 4845 -3804 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 10/26-27194 4966 -3925 681 40 <05 <0 5 <0 5 <br /> 01125-26195 4728 -3687 <50 <0 5 <05 <0 5 <0 5 -- <br /> 04/26-27195 4232 -3191 <50 <0 5 064 <0 5 075 -- <br /> 07/26/91 4335 -3294 <50 <05 064 <0 5 084 - <br /> 10/25-26/95 4423 -3382 <br /> 01/24/96 4141 -3100 <250 <2 5 <2 5 <2 5 <2 5 -_3 <br /> 04/25/96 3675 -2634 <br /> 07/24/96 37 15 -2674 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 10/23/96 3888 -2847 SAMPLED SEMI-ANNUALLY <br /> 01/20/97 3552 -25 11 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 07/16/97 3272 -2231 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 10/15197° INACCESSIBLE <br /> 12/08/97° INACCESSIBLE <br /> 6981 xls/#180138 1 As of 06/27/01 <br />