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0 • ! _ <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 Ilvel m /lel III fiat in feet(a) In feet Benzene Toluene 6th ]benzene Xylenes TPI I-G M rBC <br /> 6118190 1747 -- -1591 <br /> -077 <br /> 7112/90 1753 -- -1597 -006 -- <br /> 8/16/90 1782 -1626 -0 29 �- <br /> 9/17/90 18 15 -- -1659 -033 -- -- -- -- _-_- <br /> 9/19/90 18 15 -- -1659 000 130 140 80 6000 24000 <br /> 10/11/90 18 24 -- -1668 -009 -- <br /> 12/6/90 18 11 -- -1655 0 13 -- <br /> 2/12/91 1780 -1624 031 2600 130 610 4700 18000 <br /> 2/25/91 1876 -- -1720 -096 <br /> 4/23191 1689 -- -15 33 187 -- <br /> 7/15/91 Dry -- <br /> 10/8/91 Dry -- -- -- __ -- -- <br /> 1/22/92 1824 -- -1668 -1 35 <br /> 4122/92 1745 -1589 079 170 98 50 120 3600 '! <br /> 7129192 Dry _. <br /> 10/29/92 1719 -- -1563 026 480 32 440 1100 8900 -- <br /> 1/27/93 16 10 -1454 109 390 25 310 730 12000 - <br /> 4/29/93 14 19 -- -1263 1 91 270 <98 I50 380 12000 -- <br /> 8/5/93 15 83 -- -1427 -1 64 370 22 220 460 16000 - <br /> 1 1/10193 16 18 -- -1462 -035 210 21 200 390 12000 -- <br /> 3/21/94 15 51 -- -1395 067 170 24 200 320 6300 <br /> 6127/94 1534 -- -13 78 0 17 780 18 660 980 10000 <br /> 9/29/94 1636 -- -14 80 -102 430 14 470 630 8800 <br /> 1218194 1597 -- -1441 039 450 20 610 810 7800 <br /> 3/8/95 13 54 -- -11 98 243 100 <20 230 260 8600 <br /> 6/1/95 1202 -- -1046 1 52 550 38 870 2000 24000 <br /> 9/11/95 1422 -- -1266 -220 1700 7600 3000 14000 150000 <br /> 12/5195 14 58 -1302 -036 960 1500 1000 3200 45000 - <br /> 3/18/96 962 -- -806 496 290 130 240 490 8800 -_ <br /> 6118/96 1035 -879 -073 110 32 69 91 1600 110 <br /> 9125196 1282 -- -11 26 -247 130 <5 180 46 2800 83 <br /> 331611 Atli 15/213351 116 X1 5 <br />