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1 <br />1 <br />This well is considered the most important point for monitoring potential problems during the <br />Project operations. It is anticipated that water quality in this well will not meet Federal or State <br />water quality standards for drinking, irrigation, or wildlife. The proposed construction details for <br />this well are presented on Figure 5. <br />WSW -1: <br />WSW -1 is a planned water supply well to be completed in the Upper Aquifer. This well will <br />' provide daily data that will supplement the monitoring program. This well will be located <br />immediately downgradient of the proposed production well field. The water supply well will be <br />approximately 1,200 feet deep, with an open hole interval at the bottom 200 feet. The upper <br />1,000 feet will be lined with steel casing, cemented in place. <br />5.0 CONCLUSIONS <br />• Surface and Ground Water Monitoring Plan • <br />AmerAlia, Inc. — Experimental Pilot Plant - Nahcolite Project 99 -043P <br />including it in the Monitoring Plan. A water quality sample from this well will be analyzed, and <br />compared with the older available data to judge, if a hydraulic communication with other <br />aquifers could have developed over time. If monitoring of a discrete section of this well would <br />be preferable to 315 feet of open well, the well can likely be refitted with 2 or 4 -inch Schedule <br />80 PVC or stainless steel casing and screen. Location of this well directly downgradient and <br />approximately 1,200 feet east - northeast of the proposed production well field is considered as <br />good compliance ground water monitoring site. Recommended construction of this well is <br />presented on Figure 4. <br />4.0 GROUND WATER PROCESS MONITORING <br />DSW — 1: <br />This monitoring well will be located immediately above the Dissolution Zone in the central mine <br />pillar, between production wells W -1, W -2, and W -3. The depth of this well will be greater than <br />the depth of the proposed mining zone, with a perforated interval of the 40 to 50 feet <br />immediately above the Top of the Dissolution Zone. The well will be constructed with 5 -inch <br />steel casing grouted in place, then perforated after installation. This well will provide near <br />instantaneous detailed monitoring of the controlled solution cavities including cavity shape and <br />size and fugitive effluents. <br />This Monitoring Plan was prepared to be used for discussions with the regulatory agencies. The <br />proposed monitoring locations should be field checked, and the spring and seep inventory should <br />to be completed prior to finalization of this Monitoring Plan. <br />Water Quality analyses should be performed in an EPA certified laboratory. A Monitoring <br />Manual with procedures for measurements, samples collection and shipment and Quality Control <br />will be completed prior to initiation of the monitoring program. <br />\ \Gamethome _new \VladimiMmerAliaNAmerAlia Report R3.doc - 20- Aug -99 <br />-4- <br />