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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station 92133 <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 TPFIg 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-7 12/4/1989 -- -- - <br /> (cont) 1/4/1990 _ <br /> 2/1/1990 - <br /> 2/15/1990 -- -- <br /> 2/22A 990 -- -- <br /> 3/8/1990 1570 -- -1454 - 137 1 5 0 8 14 <br /> 4/5/1990 1588 -1472 -018 - <br /> 4/19/1990 1600 -- -1484 -012 <br /> 5/10/1990 1630 -1514 -030 <br /> 5/24/1990 1628 -1512 002 <br /> 6/5/1990 -- _ <br /> 6/18/1990 dry -- <br /> 7/12/1990 1703 -1587 - <br /> 8/16/1990 1712 -1596 -009 _ <br /> 9/17/1990 1772 -1656 -060 -- - - <br /> 9/18/1990 1772 -- -1656 000 1,100 100 12 45 28 <br /> 10/11/1990 1776 -- -1660 -004 - -- _ <br /> 12/6/1990 - <br /> 2/12/1991 1728 - -1612 840 33 8 72 21 <br /> 2/25/1991 1722 -- 1606 006 -- -- <br /> 4/23/1991 1633 -- 1517 089 - <br /> 7116191 1865 — -1749 -232 <br /> 10/8/1991 1900 -1784 -035 - __ __ <br /> 1/22/1992 1775 -1659 1 25 860 2 8 1 2 21 23 <br /> 4/22/1992 1681 -1565 094 500 <21 <3 2 <1 9 <1 9 <br /> 7/29/1992 1827 -1711 -146 - <br /> 10/29/92 -- <br /> 1/27/1993 1548 -- -1432 - 660 <5 27 1 6 2 9 <br /> 4/29/1993 1373 -- -1257 175 450 <3 4 <31 <2 0 <0 9 <br /> 8/5/1993 1543 -- -1427 -170 360 <5 <3 2 9 0 9 <br /> 11/10/1993 1567 -- -1451 -024 150 1 6 0 6 1 4 0 6 <br /> 3/21/1994 1509 -- -1393 058 68 2 9 1 4 0 8 34 <br /> 6/27/1994 1486 -1370 023 180 <0 3 <0 3 39 0 8 <br /> 9/29/1994 1605 -1489 -1 19 <50 <0 5 <0 5 <0 5 <0 5 <br /> Prolects/ARCO/2133/Reports/Tables/gwtables2133 As 12 <br />