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Groundwater MonitoriTng a and Analytical Results
<br /> Former Unocal Service Station #2859
<br /> 1665 Pacific Avenue
<br /> Stockton California
<br /> We11ID/ Date DTW GWE TPH(G) B T E x MTBE
<br /> TOC* (ft) (msl) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb)
<br /> MW-2 08/07/96 3429 -2421 290,000 3,200 52,000 8,900 38,000 ND
<br /> (cont) 11/14/96 34 4l -2433 180,000 4200 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/ND 4
<br /> 06/18/98 2407 -13 99 90,000 1,600 19,000 4,400 21,000 3ND1214
<br /> 08/31/98 2485 -1477 83,000 1,000 12,000 4,000 18,000 3ND/ND 4
<br /> 12/04/98 2474 -1466 74,000 1,500 15,000 4,300 19,000 3ND/ND 4
<br /> 02/01/99 2423 -14 15 -- -- -- -- --
<br /> 02/04/99 2406 -13 98 50,000 2,200 23 000 4,100 22,000 --/ND4
<br /> 944 03/12/99 2325 -1381 82,000 2,400 16,000 4,200 21,000 ND3
<br /> MW-3 06/06/88 -- -- 170 10 ND ND 16 --
<br /> 10/26/88 - - 200 13 ND ND 15 --
<br /> 03/02/89 - - 120 1 1 ND 07 10 --
<br /> 08/28/89 - -- 1,000 12 21 41 11 --
<br /> 11/30/89 - -- - 360 2 1 t 4 84 17 --
<br /> 03/01/90 - - 300 1 6 ND 3 6 64 --
<br /> 05/30/90 - - 760 ND 90 7 1 76 --
<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 -- - - - -
<br /> 01/04/00 DRY -- - - -- - - --
<br /> 03/04/92 DRY -- - - - --
<br /> 05/21/92 DRY - - - -
<br /> 08/18/92 INACCESSIBLE - - -
<br /> 11/13/92 DRY - - - --1060 03/26/93 DRY -- -- -- -- -- --
<br /> 06/04/93 45 77 -35 17 1,600 260 120 34 97 --
<br /> 11/12/93 4700 -3640 1,700 300 78 70 160 --
<br /> 02/18/94 4505 -34 45 3,300 85 29 240 720 --
<br /> 05/23/94 43 84 -3324 2,300 84 16 200 540 --
<br /> 08/12/94 45 63 -35 03 760 110 1 1 43 59 --
<br /> 11/08/94 45 81 -35 21 910 83 2 3 29 50 --
<br /> 2859 xls/280054 3 As of 03/12/99
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