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Apri122, 1999 • • Page 7 <br />Schedule 80, flush-threaded, O-ring sealed, solid PVC, and machine-slotted PVC well screen of <br />equal specifications. Atypical multiple-completion monitoring well is shown on Figure 3. <br />2.2.2 Faisting Monitoring If'e/!s <br />Groundwater monitoring wells have been constructed at the Yankee Gulch Project site to <br />monitor the experimental test mine phase in preparation for monitoring of commercial operations <br />(Figure 1). These wells will be incorporated into the proposed groundwater monitoring plan. The <br />existing wells aze all single completions. Of the nine existing wells, one is completed at the <br />Dissolution Surface, two are completed in or near the B Groove, two are completed in or near the <br />A Groove, and three aze completed in the Uinta Formation. Monitoring of the water supply well <br />ZO-8 (Uinta Formation) for water quality provides monitoring of changing conditions resulting from <br />operation of the test facility. <br />The existing Dissolution Surface monitoring well is 29-2. Well 20-1 has been used for <br />monitoring during the test phase, but will be removed from service prior to commercial operations. <br />Monitoring well 29-2 is an up-gradient well. <br />The existing B Groove monitoring wells include 20-4 and 20-9. Monitoring well 20~ is a <br />cross-gradient well, and monitoring well 20-9 is adown-gradient well. <br />The existing A Groove monitoring wells include 29-3 and 19-2. Monitoring well 29-3 is in <br />the well field and will monitor cross-gradient ordown-gradient trends, depending on the position <br />of the mine cavities. Monitoring well 19-2 is across-gradient well. <br />The existing Uinta Formation wells are 20-5, 20-8, and 20-]0. Monitoring well 20-5 is a <br />down-gradient well, water well 20-8 is adown-gradient water quality and water supply well, and <br />monitoring well 20-10 is across-gradient well. <br />2.3 Parachute Site <br />American Soda will use one monitoring well to monitor groundwater quality and water levels <br />at the Parachute processing site. The monitoring well will be completed at the base of the Alluvial <br />Aquifer to monitor for potential leakage from the pond. The monitoring well will be situated <br />down-gradient of the proposed pond, between the pond and Parachute Creek. The monitoring <br />protocol for the Parachute site is identical to the Yankee Gulch Lease site. <br />Agapito Associates, Inc. <br />