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Tall • <br /> Groundwater Monitoring D and Analytical Results <br /> Tosco (Unocal) Service Station#6981 <br /> 4707 Pacific Avenue > <br /> I <br /> Stockton, California <br /> Well ID/ Date DTW GWE TPH(G) B T MTR <br /> TOC* (t) Of) (ppb) (ppb) (ppb) Wb) (Ppb) (ppb) <br /> MW-4 12/08/97 35 74 -24 11 -- -- -- <br /> 6 <br /> (cont) 03/05/98 3171 -2008 3,5009 <50 6 1 59 220 38134 <br /> 05/27/98 2829 -1666 <50 3 3 <0 50 <0 50 <0 50 27/326 <br /> 07/21198 2831 -1668 <50 <0 50 1 8 <0 50 23 181186 <br /> 10/14/98 2926 17 63 <50 <0 50 <0 50 <0 50 <0 50 141106 <br /> 01125-26199 2847 -16 84 <50 <0 50 <0 50 <0 50 <0 50 9 51106 <br /> 04119-20199 2606 -1443 <50 <0 50 <0 50 <0 50 <0 50 6 2/4 86 <br /> 07/15-16199 2736 -15 73 <50 <0 50 <0 50 <0 50 <0 50 3 214 66 <br /> 11 63 10/25-26199 2900 -1737 <50 <0 50 071 <0 50 2 3 52133 6 <br /> MW-5 02/21/90 -- -- 3,600 77 16 05 17 -- <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 <br /> 10121-22192 DRY - -- -- -- - --01/13/93 DRY -- -- -- -- <br /> 1176 <br /> -1176 04/26/93 50 82 -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 5235 -4059 21,000 15,000 120 <50 68 -- <br /> 01/17-18194 4983 -3807 23,000 13,000 100 <50 75 -- <br /> 04/25-26194 4775 -35 99 16,000 12,000 92 31 70 -- <br /> 07/25-26194 50 16 -3840 NOT SAMPLED-(CONSTRUCTION ) -- -- -- <br /> 10/26-27/94 51 26 -39 50 13,000 10,000 790 <20 270 - <br /> 01/25-26/95 4862 -36 86 5,000 3,700 27 <0 5 44 - <br /> 04/26-27195 43 97 -3221 2,900 650 12 23 16 -- <br /> 07/27/95 4503 -33 27 150 21 24 <10 1 9 -- <br /> 10/25-26195 4992 -38 16 -- -- -- -- -- <br /> 01/25/96 43 11 -31 35 86 69 085 <05 0 84 - 3 <br /> 6981 AW180138 5 As of 10/26/99 <br />