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Table 1. Summary of Groundwater Monoiling Data: Water Elevations and Analyses • <br /> ARCO Facility 2133, Stockton, California <br /> Top-of-casing Depth-to- Product Water-level Change since Concentrations in gg/L mg/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 Ethylbenzene Xylenes TPH-G MTBE DO <br /> 6/18190 1747 -1591 -077 <br /> 7/12190 1753 -- -1597 -006 <br /> 8/16/90 1782 -- -1626 -029 <br /> 9/17190 18 15 -- -1659 -033 <br /> 9/19/90 18 15 -- -1659 000 130 140 80 6000 24000 --10/11/90 1824 -- -1668 -009 <br /> 1216/90 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 /> 4/23/91 1689 -- -1533 1 87 <br /> 7/15/91 Dry <br /> 10/8/91 Dry -- -- -- -- -- -- -- -- -- <br /> 1122192 1824 -- -1668 <br /> 4122192 1745 -- -1589 079 170 9 8 50 120 3600 -- -- <br /> 7129/92 Dry -- -- -- -- -- -- - ._ <br /> 10/29/92 17 19 -- -1563 -- 480 32 440 1100 8900 -- -- <br /> 1/27/93 16 10 -- -1454 1 09 390 25 310 730 12000 -- -- <br /> 4/29/93 14 19 -- -1263 1 91 270 <98 150 380 12000 -- -- <br /> 8/5/93 15 83 -1427 -1 64 370 22 220 460 16000 -- -- <br /> 11/10/93 16 18 -- -1462 -035 210 21 200 390 12000 -- -- <br /> 3/21/94 1551 -- -13 95 067 170 24 200 320 6300 -- -- <br /> 6/27194 1534 -- -13 78 0 17 780 18 660 980 10000 -- -- <br /> 9/29/94 1636 -- -1480 -1 02 430 14 470 630 8800 -- -- <br /> 12/8/94 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 --9/11/95 1422 -- -12 66 -220 1700 7600 3000 14000 150000 -- -- <br /> 12/5/95 1458 -- -13 02 -036 960 1500 1000 3200 45000 -- -- <br /> 3/18/96 962 -- -806 496 290 130 240 490 8800 -- <br /> 6/18/96 1035 -- -879 -073 110 32 69 91 I600 110 -- <br /> 9/25/96 1282 -- -1126 -247 130 <5 180 46 2800 83 -- <br /> 12/4/96 1220 -- -1064 062 290 32 250 80 2800 560 -- <br /> 3119197 NP 772 -6 16 448 <0 5 <0 5 <0 5 <0 5 <50 <5 0 14 <br /> 615197 NP v 939 -- -7 83 -1 67 <0 5 <0 5 <0 5 <0 5 <50 8 5 023 <br /> 8/19/97 NP 1094 11 -928 1 -145 1 <0 5 1 <0 5 <0 5 <0 5 <50 <5 0 19 <br /> 47571TABLES12133AU07 XLS <br />