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ERC CC&V Water Balance user's Manual <br /> November 2019 <br /> • Initial Pond Volume(gal)—Input for each PSSA volume at the start of the simulation. This input is <br /> only used during the initial month of the analysis, with the model calculating PSSA volumes in <br /> ensuing months <br /> • Leach Application Rate (gpm/ft�)— Input for the leach application rate per unit area at each VLF. <br /> The total leached areas used by the model are determined by dividing the input leach flow rate <br /> by the application rate <br /> • Natural Ore Moisture Content(%)—Input for the moisture content of the natural ore during each <br /> month of the simulation (applies to areas draining to all four PSSA within VLF1) <br /> • Droindown Moisture Content (%) — Input for the moisture content of the ore during draindown <br /> during each month of the simulation (applies to areas draining to all four PSSA within VLF1) <br /> • Moisture Content Under Leach (%) — Input for the moisture content of the ore when it is under <br /> leach during each month of the simulation (applies to areas draining to all four PSSA within VLF1) <br /> • Leach Flow Rate (gpm)— Input for the total solution rate applied to each VLF during each month <br /> of the simulation <br /> • Monthly Ore Production (tons)— Input for the quantity of ore produced and placed on the heap <br /> during each month of the simulation <br /> • Monthly Line Areas (ftz) — Input for the exposed liner and total lined areas at each heap during <br /> each month of the simulation <br /> • Loaded Height(Above Liner) (ft) — Input for the total loaded height above the liner at each heap <br /> during each month of the simulation. This value is used to determine the breakthrough, <br /> draindown, and leach times of the heaps to the PSSAs. <br /> Squaw Valley VLF2 Inputs: <br /> VLF2 only contains two PSSAs (Phase 1/2 and Phase 3), as opposed to the four existing at VLF1. For VLF2, <br /> however,the model considers loading and primary and secondary leaching separately from each other <br /> before calculating total drainage and adsorption rates. Inputs in this section are therefore the same as <br /> those for the "Arequa VLF1 Inputs", except for the following differences: <br /> • Separate inputs are provided for the primary and secondary leach application rates. <br /> • Separate inputs are provided for the primary and secondary leach flow rates. <br /> • Separate inputs are provided for the primary loaded height above the liner and secondary <br /> leached height above the liner. <br /> Other Inputs: <br /> • ECOSA Area (fiz)— Input for the area of the ECOSA that would result in runoff for each month of <br /> the simulation <br /> • SGOSA Area (ft2)— Input for the area of the SGOSA that would result in runoff for each month of <br /> the simulation <br /> • WHEX PitArea(ftz)—Input for the area of the WHEX Pit that would result in runoff for each month <br /> of the simulation <br /> 6 <br />