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Tab <br /> . Groundwater Monitoring Tab <br /> Analytical Results . <br /> Former Tosco(Unocal) Service Station 46981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL ID/ DATE DTW sl GWE TPH-G E T E X MTBE <br /> TOC*(ft) ( ) Ut.bgs) (ft) (ppb) (ppb) (ppb) (ppb) (pb) ( b) <br /> 50 0-55 0 -- 3,600 77 16 05 17 <br /> MW-5 02/21/90 -- ..- <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 -- -- --10/21-22/92 DRY <br /> 01/13/93 DRY <br /> 11 76 04/26/93 5082 -3906 60,000 28,000 <250 <250 'k <250 -- <br /> 07/26/93 51 81 -4005 43,000 19,000 240 <125 <125 -- <br /> 10/20/93 5235 -4059 21,000 15,000 120 <50 68 - <br /> 01117-18194 4983 -3807 23,000 13,000 100 <50 75 - <br /> 04/25-26194 4775 -3599 16,000 12,000 92 31 70 - <br /> 07l25-26194 50 16 - -3840 NOT SAMPLED DUE TO CONSTRUCTION -- - <br /> 10/26-27194 51 26 -3950 13,000 10,000 790 <20 270 <br /> 01/25-26/95 4862 -3686 5,000 3,700 27 <0 5 44 - <br /> 04/26-27195 4397 -3221 2,900 650 12 23 16 - <br /> 07/27/95 4503 -3327 150 21 24 <1 0 I 1 9 -- <br /> 10/25-26195 4992 -38 16 -- -- -- -- i -- -- <br /> 01/25/96 43 11 -31 35 86 69 095 <0 5 084 -3 <br /> 04/25/96 3831 -2655 -- -- -- -- '- -- <br /> 07/24/96 38 68 -2692 <50 <0 5 <05 <0 5 <0 5 69/696 <br /> 10/23/96 4053 -2877 SAMPLED SEMI-ANNUALLY -- - --01/20/97 3692 -2506 <50 <0 5 <0 5 <0 5 i <0 5 25 <br /> 07/16/97 3432 -2256 <50 <0 5 <0 5 <0 5 i <0 5 34 <br /> 10/15/97 36 18 -2442 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 12/08/97 3605 -2429 - -- -- - -- -- <br /> 03/05/98 31 66 -1990 <50 <0 50 <0 50 <0 50 <0 50 23/186 <br /> 6981 xlc/4180138 7 As of 06/26/03 <br /> i <br />