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g <br /> Groundwater Monitoring D d Analytical Results <br /> Former Tosco(Unocal)Service Station#6981 <br /> 4707 Pacific Avenue <br /> Stockton,California <br /> WELL 1D/ <br /> DATE DTW S1 GWE TP8-G B T E X MTBE <br /> 7OC* ) (fr) (A b 9s) (jt.) b) ftb) b) (ppb) r b) (p,0b) <br /> VW-4 <br /> NA 07/24/96 DRY 25 5-50 5 -- <br /> 10/23/96 -- -- SAMPLED SEMI-ANNUALLY <br /> -' <br /> 3,000 <0 5 53 31 530 <5 0 <br /> 01/21/97 3607 <br /> 07/17/97 3413 -- 670 <0 5 45 61 98 5 1 <br /> 10/15/97 DRY <br /> 12/08/97 WELL CONNECTED TO VES -- -- <0 50 351396 <br /> 03/05/98 31 82 -- <50 <0 50 <0 50 <0 50 <br /> 3,900 <10 <10 <10 <10 <10/<5 06 <br /> 05/27/98 2855 "- <5 0/<2 06 <br /> 07/21/98 2853 -- 2,SOOg 9 7 <0 50 <Q 50 57 <br /> 9 <SQ 120 370 <250/<666 <br /> 10/14/98 2954 -- 14,000 <50 <br /> 01/25-26199 2874 -- 20,00012 <50 100 <50 440 <250/156 <br /> 04119-20199 26 23 14,000 <50 <50 82 170 <250/156 <br /> 07115-16199 27 54 -- 17,000 <50 <50 <50 <50 <2501196 <br /> 00/25-26199 29 36 22,00013 <50 <50 70 290 <250/27' <br /> 13190 1300 431516 <br /> 01/27-28/00 2885 -- 19,000 66 <50 , <br /> 06126-27100 2609 -- 3,47014 13 <5 00 <5 00 <5 00 432 683/1,1106 <br /> 00110 <br /> 11 76 09122-23100 2865 -1689 12,00014 <1oo <100 <100 200 zs 0/172' <br /> 12/26-27100 2858 -1682 11,10014 <12 5 <12 5 275 167 140/1726 <br /> 03/07-08101 2827 -1651 12,70014 128 <10 0 794 413 350/3216 <br /> 06126-27/01 2932 -1756 17,00014 <20 <20 27 170 230/3306 <br /> 09/12-13101 3120 -1944 6,90014 88 <5 0 62 230 240/3106 <br /> 12112-13101 3147 -1971 7,00014 24 <10 200 64 220/2706 <br /> 03/20-21102 3021 -1845 17014 <0 50 <0 50 <0 50 24 271366 <br /> 06/06-07/0211 3067 -1891 <50 <0 50 <0 50 050 39 --/406 <br /> I <br /> 09/30/02 DRY <br /> 12/30-31/02 DRY <br /> 03/29-30/0318 3174 -1998 <50 <0 50 <0 50 <0 50 <1 0 <2 0 <br /> 06/25-26103 3208 -2032 NOT SAMPLED DUE TO INSUFFICIENT WATER -- -- <br /> 09124-2510316 3445 -2269 <50 <0 50 061 <0 50 <1 0 29 <br /> 6981 x1s1#180138 23 As of 09/25/03 <br />