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Table 1, Water-Level Elevations <br /> ARCO Station 2133,Stockton,California (cont'd) <br /> Top-of-casing Depth to Depth to Water level Change since <br /> Well No and elevation bottom of well water elevation last measurement <br /> date feet a well low TOC feet in feet feet <br /> 1/4/90 1622 -1549 -- <br /> 2/l/90 -- -- <br /> 2/15/90 -- -- -- <br /> 2/22/90 -- — -- <br /> 3/8/90 1578 -1505 -- <br /> 4/5/90 1585 -1512 -007 <br /> 4/19/90 1592 -1519 -007 <br /> 5/10/90 1657 -1584 -065 <br /> 5/24/90 16.54 -1581 003 <br /> 6/5190 — -- — <br /> 6/18/90 1663 -1590 -- <br /> 7/12/90 1703 -1630 -040 <br /> 8/16/90 1721 -1648 -018 <br /> 9/17/90 1770 -1697 -049 <br /> 10/11/90 1778 -1705 -008 <br /> 12/6/90 1763 -1690 015 <br /> 2/11/91 1737 -1664 033 <br /> 2/25/91 1735 -1662 002 <br /> 4/23/91 1636 -1563 099 <br /> 7/15/91 1799 -1726 -163 <br /> 10/8/91 1864 -1791 -065 <br /> • 1/22192 1744 -1671 120 <br /> 4/22/92 1666 -1593 078 <br /> 7/29/92 18.13 -17.40 -1.47 <br /> (a) Elevations are based on professional survey of July, 1990 <br /> (b)Well was dry, no measurement was taken <br /> (c)Well was essentially dry, water was present in the unscreened bottom cap of the well,but does not <br /> likely represent the water table elevation at the time of measurement. <br /> Note Dash indicates not measured or not analyzed <br />