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1 <br /> ii <br /> Groundwater Monitoring llata 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 X MTBE <br /> TQC* (ft.) (ft.) (ppb) (ppb) (ppb) (Ppb) (ppb) (p b) <br /> VW-1 07/21/98 2798 <50 <0 50 1 4 <0 50 14 <5 01<2 06 j <br /> (cont) 10/14/98 2900 — <50 <0 50 <0 SO <0 50 <0 50 <2 5/<2 06 <br /> VW-2 <br /> NA 07/24/96 38 67 -- 78,000 510 3,100 540 24,000 720/5606 <br /> 10/15/96 DRY <br /> 10/23/96 - -- SAMPLED SEMI-ANNUALLY <br /> 01/20/97 3707 -- INSUFFICIENT WATER TO SAMPLE <br /> 07/16/97 DRY <br /> 12/08/97 WELL CONNECTED TO VES <br /> 03/05/98 DRY <br /> 05/27/98 DRY <br /> 07/21/98 DRY <br /> 10/14/98 DRY <br /> VW-3 <br /> NA 07/24/96 38 34 -- <50 <05 <05 <0 5 <05 <5 0 <br /> 10/23/96 -- -- SAMPLED SEMI-ANNUALLY <br /> 01/21/97 36 51 - <50 <0 5 <05 <05 <05 58 <br /> 07/16/97 33 98 -- <50 <05 <05 <05 <05 14 <br /> 10/15/97 35 84 -- <50 <05 <05 <05 <05 <5 0/<2 06 <br /> 12/08/97 35 75 -- <br /> 03/05/98 31 20 - <50 <0 50 <0 50 <0 50 <0 50 340/3006 <br /> 05/27/98 2796 -- <50 <0 50 <0 50 <0 50 <0 50 <2 51<2 06 <br /> 07/21/98 2807 -- <50 <0 50 1 7 <0 50 1 6 <5 0/<2 06 <br /> 10/14/98 29 10 -- <50 <0 50 <0 50 <0 50 <0 50 <2 51«06 <br /> VW4 <br /> NA 07/24/96 DRY <br /> 10/23/96 -- -- SAMPLED SEMI-ANNUALLY <br /> 01/21/97 3607 - 3,000 <05 5 3 31 530 <50 <br /> 07/17/97 34 13 670 <05 4 5 6 1 98 5 1 <br /> 10/15/97 DRY <br /> 6981 x1s/1/180138 12 As of 10114/98 <br />