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i reduced the sodium chloride content of the product but did not solve <br />the problem. In addition, a purge stream was dumped to the process <br />pond. In June, the recovery well tubing was found to be lower than <br />anticipated, and after raising the recovery tubing into the mining <br />zone, the sodium chloride dropped significantly, see Figure 4-5. <br />g. As a result of material handling problems with compacted bicarb, the <br />compactors were removed from the plant and sold. <br />h. Minor modification of the storage dome included construction of <br />temporary wooden retainer walls in front of the access doors to <br />increase storage capacity (this was partially successful, enlargement <br />of holes over the feed conveyor to improve flow, and a screen was <br />utilized to eliminate oversized bicarb. <br /> <br />4.3.2 Production Wells <br />Currently, continuous monitoring of both production wells consists of temperature, <br />pressure, density and flow data. During the year some problems were <br />encountered with the density and flow meters. Both flow meters on the <br />productions wells failed due to an incompatibility with the high temperatures of <br />the injection and recovery fluids. The flow meters were taken ou, of service and <br />replaced with meters designed to handle the hot fluids used as part of the solution <br />mining process. In addition to the problems with the flow meters, the density <br />meters on each wellhead assembly were inconsistent and their reliability suspect. <br />Because of the high temperatures of the injection and recovery liquors, off <br />gassing of C02 (bicarb to carbonate conversion) would distort readings from the <br />Schlumberger Specific Gravity meters. These instruments are considered to be the <br />2a <br />