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Placer processing of material from the same geologic depositional era has been analyzed to estimate <br /> flocculant requirements and solids flow rates. These lab results showed a solids concentration of <br /> 3.4%within the slurry. Based on this and a total anticipated flow, of 1250 cubic feet/minute, the <br /> flow rate will be 42.5 cubic feet per minute. If the settled solids(SG= 1.6)have 40%water by <br /> weight,this means that 114 cubic feet/minute of"muck"will be produced from the wash plant. For <br /> 12 hours of operation,this is 80,000 cubic feet per day, 3,000 cubic yards per day. However, given <br /> that the dredge piles contain cleaner material than what is processed in most placer operations,the <br /> actual muck production rate should be lower than this. <br /> Cleanout of the pond will take place on a regular basis to maintain pond function and capacity. Any <br /> muck extracted will be allowed to drain for a few days and the semi-dry material will be hauled to <br /> various locations on site for possible use as substitute topsoil in the reclamation. Much of the water <br /> will drain rapidly from the muck as it is placed on the bank along the pond. <br /> 5.3 Water Transmission <br /> The recirculation pond will be excavated in native material which has a significant proportion <br /> (>30%) of fines within it. The ground water table (which is the alluvial aquifer of the river)is at <br /> least 25 feet below the natural surface elevation. The pond will typically be five feet deep. <br /> Operation of the recirculation pond will reduce its permeability even further. The primary way that <br /> water leaves the pond will be via reuse into the processing plants. Evaporation will also take place. <br /> Consumed water will be replaced by an approved well permit with an augmentation or substitute <br /> water supply plan. Any overflow from the recirculation pond will be contained on site by the mining <br /> highwall. <br /> 6. Water Handling <br /> Water handling at the Trout Valley Ranch will be minimal during the first 20 years of the mine life. <br /> The dredge piles are highly permeable, and no water will be encountered within them during <br /> mining. Runoff will be managed in activity areas to prevent the discharge of sediment into the local <br /> watershed. Map C-2, for example, shows how the first 20 years of the mine's life will avoid the <br /> bulk of the existing surface water entities and structures, and how the mining plan creates a mine <br /> Trout Valley Ranch November2016 D-5 GrCgIx.kki and nssmales.PLiS' <br />