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D.6.7.5 Phase II Operations <br />• <br />At the end of Phase I operation, the Phase I distribution <br />system will be progressively dismantled and moved to the 8,620 <br />bench. The Phase II system will extend around the entire <br />perimeter of the 8,620 bench. Prior to placement of the final <br />Phase II raise on the main embankment, a branch will extend <br />to the top of the first raise at an elevation of 8,605 ft. This <br />segment will subsequently be relocated to final embankment <br />raise. <br />Tailings will be deposited from spigots located every <br />100 ft around the perimeter of the embankment. Deposition will <br />be carried out from selective locations in order to maintain <br />the free water pool at the base of the Phase II water reclaim <br />ramp. Selective disposal will also be used to establish the <br />topographic surface expression required for reclamation of the <br />disposal area. The Phase II pipeline distributian is shown on <br />Figure C-12. <br />D.6.7.6 Monitorina <br />D.6.7.6.1 General <br />An active monitoring and observation pragram will be <br />conducted to confirm that the performance of the tailings <br />facilities are satisfactory and that the tailings disposal is <br />occurring in accordance with the design. The program will <br />monitor groundwater quality and elevation, the quantity and <br />quality of surface water, settlement of the embankment, free <br />water pool volumes, and deposited tailings densities. Daily <br />visual observations of the tailings disposal area and <br />appurtenant facilities will be conducted by the operating <br />personnel. Significant observations and operat~~ons criteria <br />will be recorded on a daily basis. <br /> <br />D-57 <br />