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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 TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) ft (ft,MSL) hange(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> E-6 3/8/1990 1765 -- -1464 093 3,600 740 340 980 <br /> (cont) 4/5/1990 1767 - -1466 -002 - __ _ <br /> 4/19/1990 1773 -- -1472 -006 <br /> 5/10/1990 1811 -- -1510 -038 <br /> 5/24/1990 1813 -- -1512 -002 <br /> 6/5/1990 1812 -1511 001 <br /> 6/19/1990 1880 -- -1579 -068 <br /> 7/12/1990 1872 -- -1571 008 -- <br /> 8/16/1990 dry -- -- __ - <br /> 9/17/1990 dry --10111/1990 dry .. .. _ <br /> 12/6/1990 dry -- -- <br /> 2/12/1991 1886 -- -1585 - <br /> 2/25/1991 1884 -1583 002 , <br /> 4/23/1991 1814 -- -1513 070 <br /> 7/15/1991 dry -- .. -- <br /> 10/8/1991 dry -- <br /> 1/22/1992 dry -- -- <br /> 4/22/92 1855 -- -1554 - <br /> 7/29/1992 dry <br /> 10/29/1992 dry -- -- - -- _ <br /> 1/27/1993 1728 -1427 -- 26,000 3,300 310 1,000 1,600 <br /> 4/29/1993 1547 - -1246 181 33,000 3,200 270 1,400 2,300 <br /> 8/5/1993 1711 -1410 -164 16,000 2,500 57 1100 1,000 <br /> 11/10/1993 17 34 - -1433 -023 27,000 2,500 73 1 200 1,800 <br /> 3/21/1994 1684 -- -1383 050 21,000 2,000 150 1,200 2,100 <br /> 6/27/1994 1658 -1357 026 17,000 2,000 47 1,300 1,600 <br /> 9/29/94 -- -- -- 29,400 3,100 X100 1,800 2,900 <br /> 12/8/94 1588 -1287 - 18,000 2,100 240 1,800 2 600 <br /> 3/8195 2 82 1334 -1033 254 47,000 880 170 870 2 900 <br /> 6/1/1995 -- <br /> 9/11/1995 1410 - -1109 -- 15,000 320 <20 400 130 <br /> 12/5/1995 141 1455 -- -1314 -205 -- -- __ <br /> 3/18/1996 938 -- -797 517 1,200 14 <5 24 27 <br /> Prolects/ARCO/2133/Reports/Tables/gwtables2133 xls 10 <br />