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. T*1 a <br /> Groundwater Monitoring Data and Analytical Results <br /> Tosco (Unocal) Service Station#6981 " <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> We11ID/ Date DTW GWE TPH(G) B T E x MTBE <br /> TOC* (ft) (1't <br /> MW-5 04/02/91 DRY -- - -- -- -- -- <br /> (cont) 07/18/91 DRY - -- - - -- " -- <br /> 09/30/91 DRY - - - -- -- <br /> 11/14/91 DRY - -- -- - -- <br /> 04116192 DRY -- - -- -- - -- -- <br /> 07/30/92 DRY - -- -- - -- -- <br /> 10/21-22192 DRY - - -- -- - -- <br /> 01/13/93 DRY -- - -- -- - --1176 04/26/93 5082 -3906 60,000 28,000 <250 <250 <250 -- <br /> 07/26/93 51 81 -4005 43,000 19,000 240 <125 <125 - <br /> 10/20/93 52 35 -4059 21,000 15,000 120 <50 68 -- <br /> 1/17-18194 49 83 -3807 23 000 13,000 100 <50 75 - <br /> 4/25-26194 47 75 -35 99 16,000 12,000 92 31 70 - <br /> 7/25-26194 50 16 -3840 NOT SAMPLED-(CONSTRUCTION) -- - -- - <br /> 10/26-27194 51 26 -39 50 13,000 10,000 790 <20 270 -- <br /> 1/25-26195 4862 -3686 5,000 3,700 27 <05 44 -- <br /> 4/26-27195 43 97 -3221 2,900 650 12 23 16 -- <br /> 07/27/95 4503 -3327 150 21 24 <1 0 I 9 -- <br /> 10/25-26195 4992 -38 16 - - -- -- -- <br /> 01/25/96 43 11 -31 35 86 69 085 <05 084 - 3 <br /> 04/25/96 38 31 -2655 -- - - - -- -- <br /> 07/24/96 38 68 -2692 <50 <05 <05 <0 5 <05 691696 <br /> 10/23/96 40 53 -2877 SAMPLED SEMI-ANNUALLY - - -- <br /> 01/20/97 36 82 -2506 <50 <05 <05 <05 <0 5 25 <br /> 07/16/97 34 32 -22 56 <50 <05 <05 <05 <05 34 <br /> 10/15/97 36 18 -2442 <50 <0 5 <05 <0 5 <0 5 <50 <br /> 12/08/97 3605 -2429 - - - - -- -- <br /> 03/05/98 31 66 -1990 <50 <0 50 <0 50 <0 50 <0 50 231186 <br /> 05/27/98 2828 -1652 <50 <0 50 <0 50 <0 50 <0 50 8 117 86 <br /> MW-6 04/16/92 - -- NOT SAMPLED -- - -- -- -- <br /> 07/30/92 -- - 4105 <05 <05 <05 <05 -- <br /> 6981 xis/#180138 5 As of 05/27198 <br />