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<br /> s T*1 • Y
<br /> Groundwater Monitoring to and Analytical Results
<br /> Former Unocal Service Station#2859
<br /> 1665 Pacific Avenue
<br /> Stockton California
<br /> Well IDI Date DTW GWE TPH(G) $ T E X MTBE
<br /> TOC* (ft) (msl) (ppb) (Ppb) (ppb) (pp b) (ppb) (Ppb)
<br /> MW-2 11/09/95 39 55 -2947 140,000 6,400 45,000 5,600 29,000 --
<br /> (cont) 02/08/96 3703 -2695 280,000 3,500 100,000 9,200 52,000 --
<br /> 05/08/96 33 59 -23 51 180,000 1,900 46,000 4,200 25,000 ND
<br /> 08/07/96 3429 -2421 290,000 3,200 52,000 8,900 38,000 ND
<br /> 11/14/96 3441 -2433 180,000 4,200 50,000 9,900 39,000 ND
<br /> 02/14/97 3070 -2062 110,000 1,500 29,000 4,100 20,000 ND
<br /> 05/07/97 2897 -18 89 77,000 1,200 28,000 3,900 18,000 ND
<br /> 03/06/98 2697 -1689 80,000 780 15,000 3,000 14,000 3ND/ND4
<br /> 06/18/98 2407 -13 99 90,000 1,600 19,000 4,400 21,000 3ND1214
<br /> 08/31/98 2495 -14 77 83,000 1,000 12 000 4,000 18,000 3ND/ND4
<br /> 12/04198 2474 -1466 74,000 1,500 15,000 4,300 19,000 3ND/ND4
<br /> 02/01/99 2423 -14 15 -- -- -- -- --
<br /> 02/04199 2406 -13 98 50,000 2,200 23,000 4,100 22,000 --/ND4
<br /> 944 03/12/99 2325 -13 81 82,000 2,400 16,000 4,200 21,000 ND3
<br /> 05/24/99 2248 -13 04 33,000 4,900 2,500 1,800 6,400 950
<br /> 08/19/99 23 81 -1437 83,00010 1,800 16,000 3,600 17,000 ND'
<br /> 11/22/99 2485 -1541 21,000i0 1,000 4,600 2,800 9,400 ND3
<br /> MW-3 06/06188 -- -- 170 10 ND ND 16 --
<br /> 10/26/88 - -- 200 13 ND ND 15 --
<br /> 03/02/89 - - 120 1 1 ND 07 1 0 --
<br /> 08/28/89 - -- 1,000 12 2 1 4 1 11 --
<br /> 11/30/89 - -- 360 2 1 1 4 84 17 --
<br /> 03/01/90 -- -- 300 1 6 ND 3 6 64 -
<br /> 05/30/90 -- 760 ND 90 7 1 7 6 --
<br /> 08/24/90 DRY -- -- -- -- -- --
<br /> 11/19/90 DRY -- - -- - -- --
<br /> 02/25/91 DRY -- - --
<br /> 05/29/91 DRY -- - - -- - -- --
<br /> 08/28/91 DRY -- - -- --01/04/00 DRY -- -- -- - -- -- --
<br /> 03/04/92 DRY -- -- - -- -- --05/21/92 DRY -- -- -- -- -- -- -
<br /> 08/18/92 INACCESSIBLE -- - - -- -- -- -
<br /> 11/13/92 DRY -- -- -- -- --1060 03/26/93 DRY -- -- -- -- -- - --
<br /> 2859 xls/280054 3 As of 11/22/99
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