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• March 2000 -57- 993-2099.150 <br />operations, CC&V is planning to apply barren solution to the VLF according to the <br />schedule presented in the design criteria. <br />Monthly precipitation was modeled using statistical historic climatological data <br />(EarthInfo 1990) and recent site climatological data recorded by CC&V and provided to <br />Golder. Data used for precipitation and evaporation distributions are summarized in <br />Appendices G-1 and G-2. The amount of precipitation that is statistically predicted to fall <br />on a monthly basis is multiplied by the lined plan area to quantify the monthly precipitation <br />inflow. <br />Recent data provided by CC&V indicates that the average moisture content of the ore <br />delivered to the VLF will be 5.6 percent by dry weight. Ore moisture content data are <br />presented in Appendix B-7. The average moisture content of the delivered ore was <br />multiplied by the dry tons of ore delivered montlily to the VLF to quantify the moisture <br />• delivered to the VLF. The anticipated annual ore delivery schedule for the VLF is <br />presented in the design criteria. <br />In addition to solution application, ore moisture, and 12-hour draindown, the PSSA's also <br />include sufficient storage volume with the appropriate freeboard to contain the 100-year, <br />24-hour design storm event and precipitation based on seasonal variability. This provision <br />is consistent with Amendment No. 7 (CC&V 1998). <br />7.2.2 System Outflow Evaluation <br />System outflow components include evaporative losses and the difference in ore moisture <br />between as-delivered moisture content and field capacity (moisture lock-up). Evaporative <br />losses were modeled using historic climatological data collected at representative locations <br />throughout the state. While there are insufficient data to generate statistical parameters <br />• <br />1:\DT:099\FINAL REPORT3099MAINi.DOC Golder AssociaTes <br />