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i <br /> Table 1 <br /> Groundwater Monitoring Data and Analytical Results <br /> Former Tosco(Unocal)Service Station#16981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL HSI/ DATE DTW $I GWE TPH-G B T E X MTBE <br /> TOC*( ) (f k) (ft bgs) (h) (ppb) (ppb) (Ppb) (Ppb) (Ppb) (ppb) <br /> d <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 /> i <br /> 09/30/91 DRY - -- - - -- <br /> 11/14/91 DRY -- -- -- -- - "- - <br /> 04/16/92 DRY -- - -- - I -" - <br /> 07/30/92 DRY - -- -- - "" -- -- <br /> 10121-22192 DRY -- - - - -- -- <br /> 01/13/93 DRY - -- -- -- - -" -- <br /> I <br /> 1111 04/26/93 1113 -3902 1,900 27 <5 0 <5 0 <5 0 - <br /> 07/26/93 5151 -4000 1,300 78 15 <5 0 i 14 -- <br /> I0/20/93 5205 -4054 1,400' 44 <10 <10 <10 -- <br /> 01/17-18/94 4956 -3805 1,200 30 88 24 94 -- <br /> 04125-26194 4745 -3594 650 13 20 <0 5 17 -- <br /> 07/25-26194 INACCESSIBLE -- - - -- -- "" - <br /> 10/26-27/94 5104 -3953 140 14 <0 5 <0 5 1 1 -- <br /> 01125-26195 4837 -3686 54 <05 <0 5 <0 5 <0 5 -- <br /> 04/26-27195 4358 -3207 <50 <05 074 <0 5 1 1 -- <br /> 07/27/95 4470 -33 19 <50 <05 <0 5 <0 5 <011 5 - <br /> 10/25-26/95 4559 -3408 - - - - --01124/96 4264 -3113 <50 <05 <0 5 <0 5 <0 5 -- <br /> 04/25/96 3792 -2641 SAMPLED SEMI-ANNUALLY - - -- -- <br /> DESTROYED <br /> 6981 x1080138 1131! <br />