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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station #2133 <br /> 2908 Benjamin Holt Drive <br /> Stockton, California <br /> Well Depth Product Groundwater Groundwater Ethyl- Xylenes <br /> Well Date Elevation to Water Thickness Elevation Elevation TPI-Ig Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) ft) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> E 10 3/10/1999 P 621 -495 221 1,620 235 142 719 859 3,980 82 <br /> (cont) 6/22/1999 NP 877 -- -751 -256 160 707 0 685 <0 5 <0 5 893 33 <br /> 9/13/1999 NP 981 -855 -104 128 931 <0 50 <0 50 1 23 299 1 8 <br /> 12/1611999 NP 945 -- -819 036 10,800 2,290 607 433 515 17,800 1 4 <br /> 3/23/2000 P 478 -- -352 467 1,520 161 <100 455 21 2 3 310 1 7 <br /> 6/21/2000 P 704 578 -226 3,770 434 367 560 286 429 006 <br /> 9/13/2000 NP 879 -- 753 -175 1,130 155 662 106 470 1,030 185 <br /> 12/15/2000 P 825 -- 699 054 18 200 1,440 824 245 424 10 700 070 <br /> 3/2/2001 P 619 sheen -493 206 6,830 1,770 <50 0 131 228 19,600 <br /> 5/10/2001 P 662 -- -536 -043 4,500 879 229 721 354 2,750 <br /> 8/22/2001 P 905 - -779 -243 8,800 810 250 360 1,500 13,000 <br /> 12/5/2001 P 848 -- -722 057 11,000* 2,400 110 580 600 37,000 676 <br /> 3/12/2002 P 647 -521 201 <20,000 610 <200 <200 450 44 000 086 <br /> 6/6/2002 P 735 -- 609 -088 8,400` 200 <50 <50 <50 14 000 022 <br /> 9/24/2002 P 910 -784 175 570** 58 <2 5 <2 5 <2 5 780 Oil <br /> 12/17/2002 P 797 -671 1 13 12,000 620 68 160 <20 8 500 <br /> 3/18/2003 P 745 — -619 052 1,100 65 <5 0 <5 0 <5 0 1,300 1 08 <br /> E-11 8/26/1988 342 -- -- __ <br /> 11/28/1988 - -- -- 440 380 110 460 <br /> 2/27/1989 - 400 250 120 820 - <br /> 5/30/1989 -- - 437 162 97 281 <br /> 8/22/1989 -- -- -- 160 36 38 220 <br /> 12/4/1989 -- -- -- - - 240 26 38 290 <br /> 1/4/1990 1839 -- -1497 -- -- <br /> 2/l/1990 1819 -1477 020 _ <br /> 2/15/1990 1816 -1474 003 <br /> 2/22/1990 1893 - -1551 -077 - - - -- <br /> 3/8/1990 1791 - -1449 102 801 31 3 756 242 <br /> 4/5/1990 1817 -- -1475 -026 - - _ <br /> 4/19/1990 1825 -- -1483 -008 _ <br /> 5/10/1990 1855 - -1513 -030 -- <br /> 5124/1990 1850 -1508 005 -- <br /> 6/5/1990 1847 -- -1505 003 - <br /> Projects/ARCO/2133/Repons/Tables/gwtables2133 As 20 <br />