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Groundwater Momtonwand Analytical Results , <br /> Former Tosco(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California _ <br /> WELL IDI DATE DTW S1 GWE TPH-G B T E X MTBE <br /> TOC*(it) (ft) (ft bgs) (ft (Ppb) (ppb) (Ppb) (ppb) (ppb) (Ppb)- <br /> MW-5 01/28/91 DRY 50 0-55 0 <br /> (cont) 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 -- <br /> 10/21-22/92 DRY - <br /> 01/13/93 DRY <br /> 1176 04/26/93 5082 -3906 60,000 28,000 <250 <250 <250 -- <br /> 07/26/93 5181 -4005 43,000 19,000 240 <125 <125 -_ <br /> 10/20/93 5235 -4059 21,000 15,000 120 <50 68 -_ <br /> 01/I7-18/94 4983 -1807 23,000 13,000 100 <50 75 -- <br /> 04/25-26194 4775 -3599 16,000 12 000 92 31 70 -- <br /> 07/25-26194 5016 -3840 NOT SAMPLED DUE TO CONSTRUCTION <br /> 10126-27/94 51 26 -3950 13,000 10,000 790 <20 270 -- <br /> 01/25-26195 4862 -3686 5,000 3,700 27 <0 5 44 - <br /> 04126-27195 4197 -3221 2,900 650 12 23 16 - <br /> 07/27/95 4503 -3327 150 21 24 <1 0 19 -- <br /> 10/25-26/95 4992 -3816 -- - -- -- -- -- <br /> 01/25/96 43 11 -3135 86 69 085 <0 5 084 --` <br /> 04/25/96 3831 -2655 -- -- - -- - -- <br /> 07/24/96 3868 -2692 <50 <0 5 <0 5 <0 5 <0 5 69169' <br /> 10/23/96 4053 -2877 SAMPLED SEMI-ANNUALLY -- -- -- <br /> 01/20/97 3682 -2506 <50 <0 5 <0 5 <0 5 <0 5 25 <br /> 07/16/97 3432 -2256 <50 <0 5 <05 <0 5 <0 5 34 <br /> 10/15/97 3618 -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 23/18` <br /> 05/27/98 2828 -1652 <50 <0 50 <0 50 <0 50 <0 50 911786 <br /> 07/21198 2840 -1664 <50 <0 50 20 <0 50 2 1 5 0/4 5" <br /> 10/14/98 2942 -1766 <50 <0 50 <0 50 <0 50 <0 50 6 012 9" <br /> 6981 xls/#!80138 7 As of 09/30/02 <br />