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Ta l • <br /> Groundwater Monitoring Data and Analytical Results <br /> Tosca(Unocal) Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Well ID/ Date DTW GWE TPII(G) B T E K MTBE <br /> TOC' Ut) (ft) (ppb) (ppb) (ppb) (ppb) b) (Ppb) <br /> VW-2 <br /> NA 07/24/96 3867 - 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 /> 05/27l98 DRY - -- -- - -- - <br /> 07/21/98 DRY - -- -- -- <br /> 10/14/98 DRY - - - -- -- - <br /> 01/25-26199 DRY - - -- - <br /> 04/19-20199 26 34 3,400 <10 <10 <10 53 781496 E <br /> 07115-16199 2779 -- INSUFFICIENT WATER TO SAMPLE — -- -- -- <br /> a <br /> R <br /> E <br /> VW-3 <br /> NA 07/24196 38 34 -- <50 <05 <05 <0 5 <05 <50 <br /> 10/23/96 - - SAMPLED SEMI-ANNUALLY -- -- -- - <br /> 01/21/97 3651 - <50 <05 <05 <05 <05 58 <br /> 07/16/97 33 98 - <50 <0 5 <0 5 <0 5 <05 i4 <br /> 10/15/97 35 84 - <50 <0 5 <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 27 96 <50 <0 50 <0 50 <0 50 <0 50 <2 5/<2 06 <br /> 07/21/98 2807 - <50 <0 50 17 <0 50 1 6 <5 0/<2 06 <br /> 10/14/98 29 10 <50 <0 50 <0 50 <0 50 <0 50 <2 5/<2 06 <br /> 01/25-26199 28 28 - <1,000 <10 <10 <10 <10 1,30011,3006 <br /> 04119-20199 25 75 <50 <0 50 <0 50 <0 50 <0 50 780/8906 <br /> 07115-16199 2718 -- <500 <5 0 <5 0� <50 — <5 0 2,90014,9006 <br /> VW-4 <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 <5 0 <br /> 6981 x1s1#180138 13 As of 07/16/99 <br />