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r <br /> Table 1. Summary of Groundwater Monitoring Data: Water Elevations and Analyses <br /> ARCO Facility 2133, Stockton, California <br /> rop-ol-casing Deptli-to- Product Water-level Change since Concentrations in i L <br /> Well number elevation, flet walLr, thickness, elevation, last measurement, Total <br /> and date above mean sea level in leer in feet in feet(a) in feet Benzene Toluene Eth ]benzene Xylenes TPI I-G MI BE <br /> 6119/90 1849 -1604 -0 92 2150 30 200 780 -- <br /> 7/12/90 1837 -- -1592 0 12 <br /> 8/16/90 1865 -- -1620 -028 -- _- -- -- -- -_ <br /> 9117190 1901 -- -1656 -036 -- -- -- __ -- <br /> 9/18/90 1901 -1656 000 7400 210 860 8300 30000 <br /> 10/11/90 19 11 -- -1666 -0 10 -- -- -- <br /> 12/6/90 1895 -1650 0 16 <br /> 2114191 1862 -- -16 17 033 6300 120 560 4300 18000 <br /> 2/25191 1859 -- -16 14 003 -- -- -- __ -- <br /> 4/23/91 17 87 -- -1542 072 8400 <0 50 270 680 10000 -_ <br /> 7/15/91 pry -- -- -- -- -- __ -- <br /> 10/8/91 Dry -- -- -- -- -- _- --1/22/92 1923 -- -1678 -1 36 <br /> 4122/92 1831 -- -1586 092 4300 130 560 1700 28000 - <br /> 7/29/92 1960 -- -17 15 -1 29 <br /> 10/29/92 Dry -- -- -- -- -- _ <br /> 1/27/93 1690 -- -1445 270 4000 110 470 800 26000 ` <br /> 4/29/93 1508 -- -1263 1 82 6300 110 920 2200 41000 <br /> 815193 1680 -- -1435 -172 4700 <50 560 560 26000 <br /> 11/10/93 17 19 -- -1474 -039 2500 <50 380 690 19000 <br /> 3/21/94 1660 -- -14 15 059 1700 40 300 650 13000 <br /> 6/27/94 1627 -- -13 82 033 1800 17 260 520 9400 -- <br /> 9/29/94 1723 -- -1478 -096 1200 <20 200 330 7900 <br /> 1218194 1683 -- -1438 040 1300 30 220 410 6800 - <br /> 3/8/95 14 34 -- -11 89 249 3000 <50 460 1400 39000 <br /> 6/l/95 1275 -- -1030 1 59 69 <2 5 11 53 2300 <br /> 9/11/95 1475 -- -1230 -200 <3 4 6 14 1200 -- <br /> 12/5/95 1541 -- -1296 -066 <br /> 3/18/96 960 -7 15 581 059 <0 5 <0 5 065 150 <br /> 6/18/96 11 20 -- -875 -1 60 -- <br /> 9/25/96 1312 -- -10.67 -192 <0 5 <0 5 <0 5 <0 5 <50 <5 <br /> 3316%rAI LEM2133Y 116 XI.S <br />