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Table 1. Summa of Groundwater M • Summary Mo! Data: Water Elevations and Analyses ARCO Facility 2093, Tracy, California Floating Change Concentrations in µg/L m Top-of-casing Depth-lo- product Water-level since last gAL Well number elevation, water, thickness elevation, measurement, I Total and date infect(a) in feet in feet in feet(b) in feet Benzene Toluene Eth lbenzene Xylenes TPH-G MTBE DO 9/25/91 -- -- -- -- <0 5 <0 5 <0 5 <0 5 <50 1/23/92 1000 -- 3807 -- <0 5 <0 5 <0 5 <0 5 <50 4/20/92 1001 -- 38 06 -001 -- -_ -_ i _- _--_ -__- 4/21/92 -- -- -- -- <0 5 <0 5 <0 5 <0 5 <50 7/8/92 10 17 -- 37 90 -- <0 5 <0 5 <0 5 <0 5 <50 -- -- 10/7/92 1023 -- 3784 -0 06 <0 5 <0 5 <0 5 <0 5 <50 1/18/93 961 -- 3846 062 <0 5 <0 5 <0 5 <0 5 <50 4/14193 9 94 -- 38 13 -033 <0 5 <0 5 <0 5 <0 5 <50 8/30/93 10 23 -- 3784 -029 <0 5 <0 5 <0 5 <0 5 <50 - 10/27/93 1024 3783 -001 <0 5 <0 5 <0 5 <0 5 <50 Y 2/18/94 1002 -- 3805 022 <0 3 0 4 <0 3 <0 5 <10 ! 5/20/94 1009 3798 -007 <0 3 <0 3 <0 3 <0 5 <10 10/7/94 1024 -- 3783 -0 15 <0 5 <0 5 <0 5 <0 5 <50 12/16/94 997 -- 38 10 027 <0 5 <0 5 <0 5 <0 5 <50 2/28/95 10 15 -- 3792 -0 18 <0 5 <0 5 <0 5 <0 5 <50 -- 4/25/95 1027 -- 3780 -0 12 <0 5 <0 5 <0 5 <0 5 <50 7/27/95 1038 -- 3769 -011 -_ __ __ 10/26/95 1041 -- 3766 -003 -- _- 2/12196 1001 -- 38 06 040 <0 5 <0 5 <0 5 <0 5 <50 - 4/18/96 1023 -- 3784 -022 -- __ -- 7/18/96 1040 3767 -017 <0 5 <0 5 <0 5 <0 5 <50 <5 11/15/96 1093 -- 37 I4 -053 -- -_ -- -- 3/14/97 -_ 614/97 ATR-11 8/25/9I 46 84 -- -- -- -- <0 5 <0 5 <0 5 <0 5 <50 9124/91 9 50 -- 3734 -- 9125/91 -- -- -- -- <0 5 <0 5 <0 5 <0 5 <50 1/23/92 895 -- 37 89 -- <0 5 <0 5 <0 5 <0 5 <50 -- -- 4/20/92 878 -- 3806 0 17 -- __ 4/21/92 -- -- -- -- <0 5 <0 5 <0 5 <0 5 <50 718/92 9 12 -- 3772 -- <0 5 <0 5 <0 5 <0 5 <50 1017192 930 -- 3754 -018 <0 5 <0 5 <0 5 <0 5 <50 - 1/18/93 780 -- 3904 150 <0 5 <0 5 <0 5 <0 5 <50 47471TABLES12093M7 XLS