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Table 1 y <br /> Groundwater Monitoring Data and Analytical Results <br /> Tosco(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL IDI DATE DTW S L GWE TPH G B T E X MTBE <br /> TOC* ( ) (ft bgs) (Hist) (ppb) (ppb) (Ppb) (ppb) (ppb) (ppb) <br /> MW-3 02/21/90 - 52 0-55 0 -- 3,400 <0 5 <0 5 <0 5 095 -- <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 /> 1151 04/26/93 5053 -3902 1,900 27 <5 0 <5 0 <5 0, -- <br /> 07/26/93 5151 -4000 1,300 78 15 <5 0 14 -- <br /> 10/20/93 5205 -4054 1,4001 44 <10 <10 <10 ! -- <br /> 01/17-18194 4956 -3805 1,200 30 88 24 94 -- <br /> I <br /> 04125-26194 4745 -3594 650 13 20 <0 5 1 7 -- <br /> 07/25-26194 INACCESSIBLE <br /> 10126-27194 5104 -3953 140 14 <0 5 <0 5 1 1 - <br /> 01/25-26195 4837 -3686 54 <05 <05 <0 5 <0 51 -- <br /> 04126-27195 4358 -3207 <50 <0 5 074 <0 5 1 1 -- <br /> I 07/27/95 4470 -33 19 <50 <0 5 <0 5 <0 5 <0 5 <br /> 10125-26195 4559 -3408 -- - -- -- - -- <br /> 01/24/96 4264 -31 13 <50 <0 5 <0 5 <0 5 <0 5 -- <br /> 04/25/96 3792 -2641 SAMPLED SEMI-ANNUALLY -- -- -- -- <br /> DESTROYED <br /> MW-4 02/21/90 51 0-55 0 - 2,600 27 10 12 15 -- <br /> 10/18/90 DRY - -- - -- -- --11/19190 DRY - - -- - - -- <br /> 6981 x1s/#198 40 As 007/01 <br />