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Table 1. Water-Level Elevations for <br /> • ARCO Facility 2093, Tracy, California <br /> Top-of-casing Depth-to- Floating Water-level Change since <br /> Well number elevation, water, product thickness elevation, last measurement, <br /> and date in feet(a) in feet in feet in feet(b) Iin feet <br /> ATR4 <br /> 4123187 49.03 10.85 -- ,3 38.18 + -- <br /> 12/22/87 11.00 -- 38.03 1-0.15 <br /> 3/24/88 10.98 -- 38.05 �0.02 <br /> 6123/88 12.11 -- 36.92 1-I.13 <br /> 9124/88 10.72 -- 38.31 1.39 <br /> 2/22/89 10.91 -- , 38.12 0 19 <br /> 6129189 11.00 -- 38.03 "-0.09 <br /> 9/18/89 <br /> 9118/89 11.19 -- 37.84 I-0.19 <br /> 12/28/89 1 l.08 -- '� 37.95 0.11 <br /> 4/18140 11.25 -- ,. 37.78 "-0.17 <br /> 10/16/90 11.38 -- 37.65 -0.13 <br /> 1/10/91 11.16 -- 37.87 x0.22 <br /> 4/10/9.1 10.99 -- 38.04 10.17 <br /> 7/10/91 11.32 -- 37.71 .170.33 <br /> 9124191 11.57 -- 37.46 0.25 <br /> 1123192 11.16 -- 37.87 0.41 <br /> 4120/92 11.12 -- 37.91 10.04 <br /> 718192 11.31 - 37.72. =0.19 <br /> 1017192 11.45 -- 37.58 �0.14 <br /> 1118/93 10.45 -- 38.58 :1.00 <br /> 4114/93 10.87 -- 38.16 10.42 <br /> 8131/93 (d) 10.98 -- -- hh0.11 <br /> 10/27/93 10.98 -- 10.00 <br /> 2118194 10.31 -- i0.67 <br /> 5/20/94 10.71 -- -- '-0.40 <br />°. 10/7194 11.00 -- .0.29 <br /> 12/16/94 10.61 -- -- 10.39. <br />'i 2/28/95 10.68 -- -- --0.07 <br /> 4/26/95 10.94 -- -- -0.26 <br /> 7127/95 11.11 -- 0.17 <br /> 10/26/95 11.18 -- '-0.07 <br /> 2112/96 10.43 <br /> -- -- 10.75 <br /> ATR-5 <br /> 3/10/89 48.73 -- -- -- <br /> 6/29/89 10.52 (e) -- 38.21 -- <br /> 9/18189 10.98(e) -- 37.75 ;0.46 <br /> 12/27/89 10.76(e) -- 37.97 10.22 <br /> 4118140 10.90(e) -- 37.83 0.14 <br /> 10/16/90 -- __ -_ I -- <br /> 10/19/90 11.10 -- 37.63 70.20 <br /> 1/10191 10.84 37.89 J0.26 <br /> 4110/91 10.67 -- 38.06 10.17 <br /> E 7110191 11.02 -- 37.71 .--0.35 <br /> 9124/91 11.29 -- 37.44 ,10.27 <br /> 1123192 10.78 -- 3795 10.51 <br /> 4120/92 10.70 -- 38.03 0.08 <br /> 0179 2 11.11 -- 37.62 70-14 <br />