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. Ta <br /> Groundwater Monitoring Wand Analytical Results • <br /> Former Tosco(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> LL�f]t DATE U"1'W S.1. <br /> GWVE TP14.G >3 T it X MT19E <br /> TOC' (A) ) (Ab ) 1 ( b) (ppb) (Ppb) ( b) ( -b) OWN <br /> MW-2 07/30/92 DRY 51 0-55 0 <br /> (cont) 10/21-22/92 DRY _ -- -_ <br /> 01/13/93 DRY _ <125 <125 <125 -- <br /> 1156 04/26/93 5072 -39 16 43,000 8,000 r <br /> 07/26/93 5172 -4016 18,000 2,900 47 38 90 <br /> 10/20/93 5226 <br /> -4070 12,000 2,400 52 <20 60 <br /> -3818 14,000 1,800 31 29 120 <br /> 01117-18194 4974 _ <br /> 04125-26/94 4761 -3605 21,000 8,000 240 93 220 <br /> 07125-26194 5007 -3851 NOT SAMPLED DUE TO CONSTRUCTION - _ r <br /> 10126-27194 5125 -3969 24,000 11,000 3,100 96 3,200 <br /> 01/25-26/95 4849 -3693 8,600 4,100 94 35 130 -- <br /> 04/26-27195 4388 -3232 11,000 5,300 460 74 530 _ <br /> 07/27/95 4495 -3339 3,300 640 26 <12 5 13 -- <br /> 10125-26/95 4584 -3428 - -- r _ r 3 <br /> 01/25/96 4305 -3149 2,100 510 29 <10 11 <br /> 04/25/96 3822 -2666 -- -- '- <br /> 07/24/96 3860 -2704 1,300 470 110 lb 75 36 <br /> 10/23/96 4043 -2887 SAMPLED SEMI-ANNUALLY -- -- -- -- <br /> 01/21/97 3693 -2537 250 72 13 45 16 18 <br /> 07/17/97 3424 -2268 16,000 3,900 220 180 390 <250 <br /> 10/16/97 3608 -2452 12,000 3,500 200 170 640 <500/120' <br /> 12/08/97 3614 -2458 -- -- -- <br /> 03/05/98 3268 -21 12 10,000 1,900 <50 150 180 280/3006 <br /> 05/27/98 2931 -1775 8,600 1,400 18 56 65 4712706 <br /> 07/21/98 2831 -1675 490 85 56 29 24 220/1806 <br /> 10/14/98 2926 -1770 2,900 620 17 36 56 380/1906 <br /> 01/25-26199 2843 -1687 2,200 610 21 24 72 270/1706 <br /> 04/19-20199 26 10 -1454 1,700 440 20 18 57 310/1806 <br /> 07115-16199 2737 -1581 620 130 <2 5 5 1 17 120/1806 <br /> 1156 10125-26/99 2907 -1751 71013 120 21 60 29 240/2006 <br /> 6981 xls1#180138 3 As of 12/31/02 <br />