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Dewatering Rates <br />Oct -11 <br />Nov -11 <br />Dec -11 <br />Jan -12 <br />Feb -12 <br />Mar -12 <br />Apr -12 <br />May - <br />12 <br />Jun -12 <br />Jul -12 <br />Total <br />Month <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />Total Projected Decline <br />Advance(ft) <br />200 <br />400 <br />600 <br />800 <br />1000 <br />1200 <br />1400 <br />1600 <br />1800 <br />0 <br />Dewaterinq Rate (gpm) High <br />0 <br />5 <br />10 <br />10 <br />15 <br />20 <br />20 <br />30 <br />30 <br />10 <br />Dewatering Rate (gpm) Low <br />0 <br />0 <br />5 <br />5 <br />5 <br />10 <br />10 <br />15 <br />15 <br />5 <br />Dewatering Rate (gal /month) <br />High <br />0 <br />223200 <br />446400 <br />446400 <br />669600 <br />892800 <br />892800 <br />1E +06 <br />1E +06 <br />446400 <br />6696000 <br />Dewatering Rate (gal /month) <br />Low <br />0 <br />0 <br />223200 <br />223200 <br />223200 <br />446400 <br />446400 <br />669600 <br />669600 <br />223200 <br />3124800 <br />Dewatering Rate (AF /month) <br />High <br />0.00 <br />0.68 <br />1.37 <br />1.37 <br />2.05 <br />2.74 <br />2.74 <br />4.11 <br />4.11 <br />1.37 <br />21 <br />Dewatering Rate (AF /month) <br />Low <br />0.00 <br />0.00 <br />0.68 <br />0.68 <br />0.68 <br />1.37 <br />1.37 <br />2.05 <br />2.05 <br />0.68 <br />10 <br />nearly four days of continuous pumping at 30 gpm from the decline. A preliminary design and <br />layout for the holding pond is shown on Figure 2, Holding Pond #1 Layout. <br />RGS will utilize aeration or other similar techniques (including covering and heating the pond) to <br />prevent water in Holding Pond #1 from freezing. RGS will construct a pump house adjacent to <br />this pond that is equipped with pumps and valves so that water can be loaded into water trucks (5 <br />- 10,000 gallon capacity) and used on the surface for dust control and/or hauled to one of RGS's <br />surface drilling rigs. Any excess water from Holding Pond #1 can also be loaded into water <br />trucks and hauled to Holding Pond #2, which will be installed in the reclaimed Homestake <br />tailings facility. See Figure 3, Holding Pond #2 Layout. <br />Holding Pond #2 is designed to contain any excess water flow from the decline that could not be <br />contained in Holding Pond #1 and /or re -used for dust control or drilling activities. This pond is <br />designed to handle approximately 21 acre -feet (6.8 million gallons) of water or 13 gpm for an <br />entire year and the pond surface will be lined with 80 mil HDPE. There would be no surface <br />discharge of water from this facility. Water would be delivered to this site and allowed to <br />passively evaporate. Assuming a continuous 30 gpm would be trucked to this site, a 10,000 <br />gallon capacity water truck would make five round trips per day to deliver water to Holding <br />Pond #2. <br />Notes: <br />(1) Assumes no grouting at Creede - Campbell Mountain Contact <br />(2) Contact between 1,200 and 1,400 feet <br />A transfer pad will be constructed adjacent to Holding Pond #2 where water will be transferred <br />from the water trucks to the holding pond by 6 inch diameter HDPE pipe. Contractor shall install <br />pipe according to Manufacturer's recommendations. <br />Water Quality — Water from the decline will be sampled for water quality. A water sample was <br />taken on August 17 2011 from monitoring well HW -3. This well is located adjacent to the <br />existing Bulldog 9360 level tunnel, approximately 1,500 feet back from the portal. The ground <br />4 <br />