2015-03-18_PERMIT FILE - M2014063 (4)

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JSC, INC. P.O. Box 1153 Meeker, CO 81641 Phone (970) 878 -5292 Fax (970) 979 -5392 March 9, 2015 Travis Marshall Division of Reclamation Mining and Safety 101S. 3`d Street, Ste 301 Grand Junction, CO 81501 Re: WRC Wet Pit, File No. M- 2014 -063, Preliminary Adequacy Review. Dear Mr. Marshall, This letter is in response to your Preliminary Adequacy Review letter dated March 3, 2015 for the above mentioned gravel permit application. 1. Please see signed and sealed Pre - mining, Mining and Reclamation maps. 2. All topsoil stockpiles for reclamation purposes will be no steeper than 3H:1 V. A plat note has also been added to the mining plan map stating the maximum slope of the stockpiles. 3. All storm water runoff and dewatering operations will be managed to protect against sediment and pollution contamination of both surface and ground water during the mining operations. Each phase of the operation will have a shallow dewatering pump with gravel filters that will pump the water into a sediment sump. The sediment sump for phase 1 will be located at the northern end of the phase. Water from the south portion of phase 1 will be pumped into the northern portion and will drain to the northern edge of the phase. This water will then be pumped into the sediment sump and the clean water discharged into an old oxbow in the river. When phase 1 is complete the sediment sump will be moved to the northern most corner of Phase 2. Phase 2 and 3 will operate the same as phase 1 with the sediment pump discharging the clean water into the closest point on the south bank of the White River. 4. The cost to dewater Phase 1 is proposed to be $15,000 plus $20 a day during mining operations. This estimation is based upon an Bhp pump costing approximately $20 a day to run and the purchase cost of the pump and the sediment sump being approximately $15,000.