Laserfiche WebLink
cavity was shutting dowrn. Assays have indicated a decrease in liquor quality from <br />• a high of 158 g/I to a near low of 112 g/I during December 1992. Some recovery <br />in the g/I of bicarb has teen noted since December. <br />Chlorides in the liquor .stream have stayed fairly constant throughout the mining <br />period at about 40 g/I (plus or minus 5 g/11. No serious problems have been <br />encountered because of the chlorides in the liquor stream as was the case in <br />1991. <br />No new wells were drilled in 1992 due to sales restrictions. With the new <br />partnership between NaTec Resources and North American Chemical Co., sales <br />are expected to increase, requiring additional production wells. In addition to the <br />two wells already permitted. It is expected that an additional well pair will also be <br />required for Cavity #3. <br />4.3.3 Monitoring Wells <br />During 1992, workove~r activity to remove a blockage in IRI-1 was successful. <br />This activity involved blowing out a bentonite/sand blockage in the casing, <br />removal of water quality sampler, replacement of sample lines and support cable, <br />and reinstallation of sampler in the well. A 1 t/2" PVC pipe was run below water <br />level. The PVC pipe will be utilized to install a pressure transducer per water level <br />monitoring program. A,s a result of this action, water level data and not just water <br />quality monitoring data will be collected. Two pressure transducers were replaced <br />during 1992 (IRI-6 and EX-2). In 1993, WRNM plans to drill and complete a <br />dedicated sonar survey/subsidence monitoring well into Cavity #2. <br /> <br />27 <br />