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• • <br /> 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 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 /> 6118/90 Dry -- -- -- -- -- -- -- -- -- <br /> 7/12/90 18 19 -- -1590 -081 <br /> 8/16/90 Dry -- _. <br /> 9/17/90 1832 -- -1603 -0 13 <br /> 9119190 1832 -- -1603 000 <br /> 10/11/90 Dry -- -- _- <br /> 12/6/90 Dry -- -- -- <br /> 2/11/91 <br /> -2/11/91 1830 -- -1601 002 -- -- -- -- -- <br /> 2/25/91 1826 -- -1597 004 <br /> 4/23/91 1779 -- -1550 047 <br /> 7/15/91 Dry -- -- -- -- -. -- -- - -- <br /> 10/8/91 Dry -- -- -- -- -- -- -- <br /> 1/22/91 Dry -- -- -- -- -- -- -- -- <br /> 4/22/92 Dry <br /> 7/29/92 Dry -- -- -- -- -- -- -- <br /> 10/29/92 Dry -- -- -- <br /> 1/27/93 <br /> _1/27/93 1669 -- -1440 1 10 2700 180 660 1900 57000 -- <br /> 4/29/93 1493 -- -1264 1 76 3400 140 930 2500 32000 -- <br /> 8/5/93 1670 -- -1441 -1 77 1800 69 670 1400 27000 -- <br /> 1 1110193 17 14 -- -1485 -044 1700 <50 740 2000 47000 -- <br /> 3/21/94 1660 -- -l4 31 054 1500 86 620 1500 24000 -- <br /> 6/27/94 1625 -- -1396 035 1500 36 670 1400 19000 -- <br /> 9/29/94 17 04 -- -1475 -079 1600 77 630 1300 24000 -- <br /> 12/8/94 1668 -1439 036 2700 58 890 1900 21000 -- <br /> 3/8/95 1420 -11 91 248 1600 130 640 2600 94000 -- <br /> 6/1/95 1268 -- -1039 1 52 1900 24 590 2500 58000 -- <br /> 9111195 1501 -1272 -233 1900 <50 640 1900 29000 -- <br /> 12/5/95 1522 -- -1293 -021 -- -- __ -_ <br /> 3118196 1040 -- -8 11 482 480 12 390 660 15000 -- <br /> 6/I 8/96 11 05 -- -876 -065 -- -- .- _- ._ <br /> 9/25/96 1352 -- -1123 -247 160 <5 160 300 7600 <50 <br /> 1214196 1293 -- -1064 059 -- __ __ <br /> 33161TABLES12133DEC6 XLS <br />