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Table 1. Summary of Groundwater Monitoring Data: Water Elevations and Analyses <br /> ARCO Facility 2133, Stockton, California <br /> Top-of-casing Depth-to- Product Water-level Change since Concentrattons tot L <br /> Well number elevation, feet water, thickness, elevation, last measurement, Tolal <br /> and date above mean sat level to feet to feet in feet(a) in feet Benzene Toluene Eth lbenzene Xylenes TPI I-G MTBE <br /> E-8 097 <br /> 8126188 -- -- -- 271 8 <2 5 46 <br /> 11/28/88 -- -- -- -- 210 4 21 76 " -- <br /> 2/27/89 -- -- -- -- 227 25 57 478 _- <br /> 5/30/89 -- -- -- 132 54 8 I 273 - -_ <br /> 8122189 -- -- -- -- 535 13 2 20 -- -- <br /> 12/4/89 -- -- -- -- 28 1 <0 3 181/4/90 <br /> 2/l/90 --2/15/90 -- <br /> -- -- -- -- -- -- <br /> 2/22/90 -- -- -- -- _ <br /> 318/90 15 54 -- -1457 -- 389 34 22 15 3 -- <br /> 4/5/90 1579 -1482 -025 -- -- -- <br /> 4/19/90 <br /> 4/19/90 1589 -- -1492 -0 105/10/90 16 16 -- -15 19 -027 <br /> 5/24190 16 14 -15 17 002 <br /> 6/5/90 <br /> 6118190 1697 -- -1600 -083 147 29 2�4 127 -_ <br /> 7112/90 1690 -1593 0 07 -- -_ -- -- <br /> 8/16/90 1730 -1633 -040 __ — <br /> 9/17190 <br /> -_ -- -- <br /> 9/17190 17 54 -- -1657 -024 -- -- <br /> 9/18/90 <br /> _9/18/90 1754 -- -1657 000 23 <0 5 1 5 16 140 10/11/90 1767 -- -1670 -0 13 -- -- -- <br /> 12/6/90 <br /> 2/12/91 18 13 -17 16 -046 110 15 17 65 1300 -- <br /> 2/25/91 1805 -- -1708 008 -- _- -_ <br /> 4/23191 1639 -- -1542 1 66 93 <0 5 <0 5 087 310 <br /> 7116191 1889 -- -1792 -25 18 <0 5 07 25 200 -" <br /> 1018191 1946 -- -1849 -057 78 <0 5 <0 5 061 <50 <br /> 1122/92 1769 -- -1672 1 77 28 06 2 1 <0 5 250 -- <br /> i <br /> 4122192 1671 -- -1574 098 93 <2 5 3 7 53 1200 <br /> 7129192 1821 -- -1724 -1 5 81 1 3 57 6 690 -- <br /> 10/29/92 1862 -- -1765 -041 87 7 1 67 620 -- <br /> 331611ABLCS12133MA16 XLS <br />