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mining area to dewater the pit prior to mining. It is expected that inflows to the pump will be <br /> approximately 50-100 gallons per minute. This amount will be pumped from the pit to the <br /> adjacent mined out pit,where it will seep into the ground. <br /> The following operation parameters are forecast: <br /> • 6-9 months per year operation <br /> • active operations will be maximum 6 days per week, 12 hours per day <br /> • move an average 2000 CY of overburden per day <br /> • Two 5-inch rock grizzlies will be located near the active pit to avoid transporting large <br /> rock to the processing plant <br /> • strip an average of 4.5"of topsoil on virgin areas and either directly respread on <br /> previously mined and regraded areas or place in a stockpile for use in reclamation <br /> Due to other operations such as topsoil removal and replacement, overburden removal and <br /> regrading, pump setup and other items, it is assumed that each area will take approximately 45 <br /> days or 1.5 months to mine. Roughly 100,000 CY of gravel is processed over the course of a <br /> year. This amount may increase if the overburden amount is less, or if plant efficiency increases. <br /> A breakdown of the anticipated product tonnages and mined tonnages and a breakdown of <br /> estimated areas is discussed below. <br /> The order of mining is reserved by the Operator and will be determined based on previous area's <br /> geology studied during mining as well as logistics. Currently, mining is completed in Areas A <br /> and B and are approximately 75%backfilled. Active gold placer mining is occurring in Area F, <br /> as of October 2017. Areas C and D are backfilled and in reclamation phase. <br /> At any one time, two mining areas may be active. The area or parts of the current area in advance <br /> of the active cut will be stripped of topsoil and will be stockpiled. The active pit will have <br /> overburden removal and gold-bearing gravel mining. The cut behind the active pit will have <br /> overburden placement, regrading and topsoil placement. Backfilling with overburden will create <br /> shallower 3H:1 V reclaimed slopes shown on Map F-1. Topsoil will be applied to overburden <br /> slopes at a depth of 4.5 inches and seeded with rangeland grasses. Reclamation plan details are <br /> described in Exhibit E. <br /> Alma Placer Mine <br /> December 2017 D-4 <br />