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4.3.3 Monitoring Wells <br />One new monitoring well was recompleted (from an injection well) in 2003. Well 1-3A was <br />recompleted as a Dissolution Surface monitoring well for water level only. EX-2, 4A-1 V, 93- <br />2M, 90-2, DS-2, DS-3, and 1-3A are all equipped with pressure transducers that have <br />continuous water level (WL) read out in the control room. In addition there are thirteen <br />wells equipped with pressure transducers, each record WL continuously, and data is stored <br />on a data acquisition unit and reported monthly. Water quality data is collected from eighteen <br />wells. Seventeen wells are dedicated to monitoring and one is also used as raw water well. <br />There are also four subsidence/water level monitoring wells. <br />4.3.4 Geotechnical Program <br />~s <br />I • <br />A long tenn, time{lomain-reflectometry monitoring program associated with well 4A-5M showed <br />no indication of subsidence in 2003. There has been no indication of subsidence from this well <br />since installation. Two new TDR subsidence wells were drilled in 2003. Both wells were drilled <br />to a depth of 1833 feet from the surface and completed with four TDR cables starting 55 <br />feet above the Dissolution Surface and terminating at 20 feet intervals. Well 2M-TDR cables <br />were damaged and did not provide useful information. As a result a second subsidence well <br />(3M-TDR) was drilled late in 2003, twenty feet north of 2M-TDR. The TDR cables in 3M-TDR <br />subsidence well appear to have some damage. In late December 2003, readings were again <br />taken and data was gathered from cables iwo and three. The data from cables one and four <br />were not usable. If the cables fail, logging will be preformed in 4'/ inch OD casing. These we{Is <br />are located between cavities #5H, 6H, and 1A. <br />18 <br />