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9 0 i <br /> Table 1. Summary of Groundwater Monitoring Data: Water Elevations and Analyses <br /> ARCO Facility 2093, Tracy, California <br /> Floating Change Concentrations in µg/L m <br /> Top-of-casing Depth-to- product Water-level since last <br /> Well number elevation, water, thickness elevation, measurement, Total <br /> and[late in feet(a) in feet in feet in feet(b) in feet Benzene Toluene Ethylbenzene X lettes TPH-G MTBE DO <br /> 7118196 953 -- 3755 031 <0 5 <0 5 <0 5 <0 5 <50 <5 <br /> 11/15/96 1000 3709 047 <0 5 <0 5 <0 5 <0 5 <50 <5 <br /> 3/14/97 NP 10 11 -- 36 97 0 11 <0 5 <0 5 <0 5 <0 5 <50 -- 009 <br /> 6/4/97 NP 934 -- 3774 -077 <0 5 <0 5 <0 5 <0 5 <50 <2 5 0 12 <br /> 8111/97 NP 9 67 3741 033 <0 5 <0 5 <0 5 <0 5 <50 <2 5 060 <br /> 11/17/97 NP 9 54 -- 3754 4113 <0 5 415 <0 5 <0 5 <50 <2 5 -- <br /> SMW-1 5024 <br /> 10/7/94 12 86 37 38 -- 250 110 <0 5 360 2200 <br /> 12/16/94 1254 -- 3770 -032 740 210 330 600 5200 - _- <br /> 2/28/95 1240 -- 3784 -0 14 i 1000 330 450 790 8300 -- -- <br /> 4/26/95 1271 -- 37 53 031 470 l to 270 480 5100 -- <br /> 7/27195 1300 -- 3724 029 410 42 360 630 7400 -- <br /> 26/95 (c) 1303 -- -- 0 03 -- __ <br /> 10/27/95 -- -- -- 640 33 440 410 7600 _- <br /> 2/12/96 1200 -- -- -- 390 <0 5 220 98 3800 -- -- <br /> 4/18/96 12 58 -- -- 058 60 <0 5 20 7 4 500 -- <br /> 7/18/96 12 85 -- -- 027 200 <5 130 56 3400 60 - <br /> 11/15/96 1340 -- -- 055 180 <2 5 62 21 2500 590 -- <br /> 3/14/97 NP 13 35 -- -005 130 <0 5 <0 5 <0 5 1700 230 0 13 <br /> 6/4197 NP 12 73 -- -- -062 36 3 1 1 4 15 520 47 0 05 <br /> 8/11/97 -- <br /> 11/17/97 NP 1296 -- -- -- <0 5 <0-5 <0J5 <0 5 <50 290 -- <br /> TEX-1 (c} <br /> 10/26/95 1286 -- -- -- <5 <0 5 <0 5 <0 5 <350 <br /> 2112196 1090 -- -- -1 96 -- __ -_ -- <br /> 4/18/96 11 35 -- 045 <0 5 <0 5 <0 5 <0 5 <50 -- -- <br /> 7/18/96 1152 -- 017 -- -- -- -- <br /> 11/15/96 12 30 -- -- 078 -- <br /> 3/14197 __ <br /> 47471TABLES12093NOV7 XLS <br />