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•~ <br />12 <br />information regarding the potential for cavern prcblems. <br />This Hermit requires submittal of the subsidence monitored <br />results. If the subsidence monitoring indicates that there <br />is significant subsidence, additional monitoring or other <br />corrective zctions could be initiated. <br />The injection Pluid and production fluid pipelines shall be <br />equipped with sampling ports to facilitate periodic <br />collection of samples for chemical analysis. Injection <br />fluid samples shall be collected from the pipeline <br />immediately upstream of where the pipeline branches to feed <br />all solution mining wells. Production fluid shall be <br />sampled at each solution mining well. Samples sha.11 be <br />collected and analyzed on an as needed basis and used only <br />to calibrate and confirm the accuracy of the densi~_y meters. <br />Some samples shall be preserved for off-site analy;sis by an <br />analytical laboratory and others shall be analyzed on site. <br />On-site chemical analyses would likely include the following <br />parameters: <br />• sodium bicarbonate <br />• sodium carbonate <br />• sodium chloride <br />• pH <br />• specific gravity <br />• temperature <br />Samples sent to off-site laboratories shall be analyzed for <br />the actual composition of the fluid for <br />correlation/calibration of the density measurements and for <br />Drocess evaluations. <br />Monitoring of water quality and water level in wells will <br />occur on a monthly basis. Monitoring wells currently <br />include wells 20-1, 20-5, and 20-8. Approximately six (6) <br />more wells, which have been installed, shall be added to the <br />monitoring program 6 (six) months prior to the comm~ancement <br />of operations. Additional Dissolution Surface moni~=orinq <br />wells may be installed and added to the monitoring )grogram, <br />as needed, as development of the commercial solution mining <br />well field progresses. <br />At a minimum, the first mining panel will have one(].) up- <br />gradient, one (1) cross-gradient well in the center of the <br />panel and two (2) down-gradient wells. These wells will <br />monitor the Uinta aquifer, the lower aquifer and they <br />alluvium as needed. The results of groundwater monitoring. <br />for the first 5 years of mining shall be used to develop an <br />appropriate monitoring program for subsequent 5-year mining <br />panels. The wells and monitoring zones shall be described <br />in an approved sample plan to be submitted by American Soda <br />~`~w <br />M ~^ <br />d`~~ e~•~ <br />.+` <br />2'u~ e+^ <br /> <br /> <br />