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Table 1 <br /> Groundwater Monitoring Data and Analytical Results <br /> Tosco (Unocal) Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton, California <br /> Well!DI Date DTW GWE TPH(G) B T E X MTBE <br /> TOC' (jt) (ft) (ppb) (ppb) (ppb) (ppb) (Ppb) b) <br /> MW-1 10/14/98 27 75 -17 34 <50 <0 50 <0 50 <0 50 069 211206 <br /> (cont) 01125-26199 2704 -16 63 <50 <0 50 <0 50 <0 50 <0 50 62/536 <br /> 04119-20199 24 53 -14 12 <50 <0 50 <0 50 <0 50 <0 50 251246 <br /> 07115-16199 2581 -1540 <50' <050 <0 50 <0 50- <050 ' <2 5/2 06 <br /> E <br /> MW-2 02/21/90 12,000 1,900 75 21 140 <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 /> 10/21-22192 DRY -- -- -- - <br /> 01/13/93 DRY -- - -- -1156 04/26/93 50 72 -39 16 43,000 8,000 <125 <125 <125 - <br /> 07/26/93 51 72 -40 16 18,000 2 900 47 38 90 - <br /> 10/20/93 52 26 -4070 12,000 2,400 52 <20 60 - <br /> 01117-18/94 49 74 -38 18 14,000 1,800 31 29 120 - <br /> 04/25-26/94 47 61 -3605 21,000 8,000 240 93 220 -- <br /> 07/25-26/94 5007 -38 51 NOT SAMPLED- (CONSTRUCTION) -- -- -- <br /> 10/26-27/94 51 25 -39 69 24,000 11,000 3,100 96 3200 - <br /> 01125-26195 4849 -36 93 8,600 4,100 94 35 130 -- <br /> 04/26-27195 43 88 -32 32 11,000 5,300 460 74 530 -- <br /> 07/27/95 44 95 -33 39 3,300 640 26 <12 5 13 - <br /> 10125-26195 45 84 -34 28 -- -- --01/25/96 43 05 -31 49 2,100 510 29 <10 11 __3 <br /> 04/25/96 3822 -26 66 -- -- -- 9 - <br /> 07/24/96 3860 -2704 1,300 470 110 16 75 36 <br /> 10/23/96 4043 -2887 SAMPLED SEMI-ANNUALLY - -- -- <br /> 01/21/97 36 93 -25 37 250 72 13 45 16 18 <br /> 07/17/97 34 24 -22 68 16,000 3,900 220 180 390 <250 <br /> 6991 x0138 Asa !6/99 <br />