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� � s <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station 92133 <br /> 2908 Benjamin Halt 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) MBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> E-8 1214189 28 1 <0 3 18 <br /> (cont) 114190 <br /> - -- -- -- -- -- -- <br /> 2/1/90 <br /> - -- -- - -- -- -- -- <br /> 2/15/90 <br /> 2/22190 -- -- <br /> 318/90 1554 1457 -- 389 3 4 22 153 <br /> 4/5/90 1579 -1482 025 - - -- - <br /> 4/19/90 1589 -1492 010 <br /> 5/10/90 1616 -1519 027 - <br /> 5124190 1614 -1517 002 <br /> 6/5190 - -- -- -- <br /> 6/18/90 1697 -1600 -- 147 29 24 127 <br /> 7/12/90 1690 -1593 007 - -- -- <br /> 8/16190 1730 -1633 -040 -- -- -- <br /> 9/17/90 1754 -1657 024 -- -- -- -- -- <br /> 9/18/90 1754 -1657 000 140 23 <0 5 15 16 <br /> 10/11/90 1767 -1670 013 - -- - -- - <br /> 1216/90 -- -- <br /> - -- -- -- -- -- -- -- <br /> 2/12191 1813 -1716 - 1,300 110 15 17 65 <br /> 2/25/91 1805 -1708 008 -- -- - - -- <br /> 4/23/91 1639 1542 166 310 93 <0 5 <0 5 087 <br /> 7/16/91 1889 -1792 250 200 18 <0 5 0 7 25 - - <br /> 10/8/91 1946 -1849 057 <50 78 <0 5 <0 5 061 <br /> 1/22/92 1769 -1672 1 77 250 2 8 06 21 <0 5 - <br /> 4/22192 1671 -- -1574 0 98 1,200 93 <2 5 37 5 3 <br /> 7/29192 1821 -1724 150 690 81 1 3 57 6 <br /> 10/29/92 1862 -1765 041 620 87 <0 7 71 67 --1/27/93 1542 1445 320 960 31 <1 19 18 <br /> 4/29/93 1356 -1259 1 86 360 20 <42 22 17 <br /> 815/93 1528 -1431 1 72 320 12 <0 5 23 1 6 <br /> 11110/93 1562 -- -1465 034 310 12 24 17 1 4 <br /> 3121194 1500 -1403 062 220 0 9 1 1 10 1 3 <br /> 6127/94 1479 -1382 021 400 24 24 46 20 <br /> 9/29/94 1576 -1479 097 670 46 <0 5 89 <0 5 - <br /> Projects/ARCO/2133/Reports/T'ables/gwtables2133 As 14 <br />