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i • • <br /> Table 1. Summary of Groundwater Monitoring Data: Water Elevations and Analyses <br /> ARCO Facility 2133, Stockton, California <br /> Tap-of-casing Depth-to- Product Water-level Change since Concentrations in L <br /> Well number elevation, feet water, thickness, elevation, last measurement, Total <br /> and date above mean sea level in feet in feet in feet(a) in feet Benzene Toluene Eth lbenzene _Xylenes TPH-G MTBE <br /> E-4 233 <br /> 8126188 -- -- -- -- -- -- -- -- -- -- <br /> 11/28/88 <br /> 2/27189 -- -- -- -- 753 29 123 324 -- -- <br /> 5/30/89 -- -- -- -- -- -- -- -- <br /> 8/22/89 -- -- -- 570 <25 44 64 -- -- <br /> 1214/89 -- -- -- -- -- -- -- <br /> 1/4/90 1738 -- -1505 <br /> 2/l/90 17 16 -- -14 83 022 <br /> 2115190 17 14 -- -14 81 002 <br /> 2/22/90 1798 -- -1565 -0 84 -- -- __ _- <br /> 318190 1690 -- -1457 1 08 244 18 2 101 193 -- -- <br /> 4/5/90 1720 -- -1487 -030 -- -- -. <br /> 4/19/90 1721 -- -1488 -001 <br /> 5/10/90 1754 -1521 -033 <br /> 5124/90 1749 -- -15 16 005 <br /> 6/5/90 1742 -- -1509 0 07 <br /> 6118190 1829 -- -1596 -0 87 <br /> 7112190 1825 -- -1592 0 04 <br /> 8116190 1855 -- -1622 -030 <br /> 9/17190 1890 -- -1657 -035 -- -- -- __ _- <br /> 9/19/90 1890 -1657 000 33 37 160 430 4400 -- <br /> 10/1 1/90 1898 -- -1665 -008 -- -- -- -_ <br /> 12/6190 1882 -- -1649 0 16 -- -- -- __ __ _. <br /> 2112191 1848 -- -16 15 034 750 9 73 270 3200 -- <br /> 2125191 1843 -- -16 10 0 05 -- -- -- __ _- <br /> 4/23/91 1762 -- -1529 081 <br /> 7116191 2030 -- -1797 -2 68 <br /> 10/8/91 2090 -- -1857 -060 -- -- -- -- -- <br /> 1122192 1901 -- -1668 1 89 1100 140 10 220 8500 -- <br /> 4/22/92 1805 -15 72 096 730 12 110 200 6300 -- <br /> 7/29/92 1963 -- -1730 -158 1000 14 130 310 7700 -- <br /> 10/29/92 1999 -- -1766 -036 1300 16 130 180 5600 -- <br /> 33WTABLESUIDDEC6 XLS <br />