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0 • • <br /> Table 1. Summary of Groundwater Monitoring Data. Water Elevations and Analyses r <br /> ARCO Facility 2133, Stockton, California <br /> Top-of-casing Depth-to- Product Water-level Change since Concentrations in µg/L mg/L <br /> Well number elevation,feet water, thickness, elevation, last measurement, Tota[ <br /> and date above mean sea level in feet in feet in feet(a) in feet Benzene Toluene Ethylbenzene Xylenes TPH-G MTBE DO <br /> 7112190 1703 -- -1587 -075 <br /> 8116190 17 12 -- -1596 -009 <br /> 9117190 1772 -- -1656 -060 <br /> 9118190 1772 -- -1656 000 100 12 45 28 1 100 -- -- <br /> 10/11/90 1776 -- -1660 -004 <br /> 12/6/94 -- -- -- -- -- -- -- -- <br /> 2/12/91 1728 -- -16 12 048 33 8 72 21 840 -- -- <br /> 2/25/91 1722 -- -1606 006 <br /> 4/23/91 1633 -- -15 17 089 <br /> 7/16/91 1865 -- -1749 -232 <br /> 10/8/91 1900 -- -1784 -035 <br /> 1/22192 1775 -- -1659 1 25 28 1 2 2 1 23 860 -- -- <br /> 4/22/92 1681 -- -1565 094 <2 1 <3 2 <1 9 <1 9 500 -- -- <br /> 7/29/92 1827 -- -17 11 -1 46 <br /> 10/29/92 <br /> 1127193 1548 -1432 279 <5 27 l 6 29 660 -- -- <br /> 4/29/93 1373 -- -1257 175 <3 4 <3 1 <2 0 <0 9 450 -- -- <br /> 8/5193 1543 -- -1427 -1 70 <5 <3 29 09 360 <br /> 11/10/93 1567 -- -1451 -024 1 6 06 14 06 150 -- -- <br /> 3/21/94 1509 -- -13 93 058 29 14 08 34 68 -- -- <br /> 6/27/94 1486 -13 70 023 <0 3 <0 3 3 9 08 180 -- -- <br /> 9/29/94 1605 -- -1489 -1 19 <0 5 <0 5 <0 5 <0 5 <50 -- -- <br /> 12/8/94 1565 -- -1449 040 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 3/8/95 13 01 -- -11 85 264 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 6/1195 1169 -- -1053 132 <0 5 <0 5 3 5 12 67 -- -- <br /> 9/11/95 13 85 -- -1269 -2 16 <0 5 <0 5 05 <0 5 75 -- -- <br /> 12/5/95 14 20 -- -1304 -035 <br /> 3/18/96 9 18 -- -802 502 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> 6/18/96 1000 -- -884 -082 <br /> 9/25/96 1247 -- -1131 -247 <0 5 <0 5 <0 5 <0 5 56 <5 -- <br /> 12/4/96 11 88 -- -1072 059 <br /> 3/19/97 734 -- -618 454 <0 5 <0 5 <0 5 <0 5 <50 -- 019 <br /> 47571TABLES12133MAR7 XLS <br />