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EXHIBIT G -WATER INFORMATION <br /> This information provided in this Exhibit is intended to satisfy the requirements outlined in Section <br /> 6.4.7 of the Colorado Mined Land Reclamation Board Construction Material Rules and <br /> Regulations: <br /> (a) Locate on the map(Exhibit C) tributary water courses, wells,springs, stock water <br /> ponds, reservoirs and ditches <br /> The site is 0.2 miles east of the South Platte River. Please refer to Exhibit C for locations of <br /> water courses in close proximity to the site, including wells, springs, stock water ponds, <br /> reservoirs and ditches. <br /> (b) Identify all known aquifers <br /> The site is underlain by a shallow alluvial aquifer, typical of its position upgradient of the <br /> South Platte River. <br /> (c) Show how water from dewatering operations or runoff from disturbed areas,piled <br /> material and operating surfaces will be managed to protect against pollution of either <br /> surface or groundwater both during and after the operation. <br /> Please refer to the Mining Plan Map in Exhibit C-5 of this application. Mine areas will drain <br /> internally. Uncontrolled releases of surface water in disturbed areas will not occur. <br /> Stormwater collected in the active mine area will be managed through the dewatering <br /> system. <br /> (d) Estimate project water requirements including now rates and annual volumes for the <br /> development, mining and reclamation phases of the project. <br /> Water needs estimated below provide for sustained production as detailed in the Mining <br /> Plan. The Operator will adjust water supplies to account for actual demand, avoid waste, <br /> and continuously comply with laws and regulations of the Division of Water Resources and <br /> any other water agency having jurisdiction over the operation. <br /> Projected Use And Consumption: Annual evaporative depletions will be the evaporation <br /> from up to 5000 feet of 4-foot wide de-watering trench, located inside of the slurry wall. The <br /> total area of exposed water is 0.5 acres. The gross annual evaporation at the Monarch <br /> DENM Mine is 42 inches according to NOAA Technical Report NWS 33, Evaporation Atlas <br /> for the Contiguous 48 United States. Monthly evaporative losses are determined using <br /> percentages specified by the State Engineer's Office for locations below 6,300 feet. The <br /> nearest weather station is in Longmont where the average annual precipitation is 15.08. <br /> Effective precipitation, that part of historical precipitation which was consumed by native <br /> vegetation on land to be covered by water surface, is conservatively estimated to be 70 <br /> percent of the total precipitation. The annual average effective precipitation at the property is <br /> estimated to be 9.09 inches. When subtracting the effective precipitation from the gross <br /> evaporation yields, the net annual evaporation is 31.44 inches, or 2.68 acre-feet per acre. <br /> The Fresh Water Pond 1(FWP 1) is approximately 12.9 acres and the Siltation Pond will be <br /> MONARCH DENM—Gravel Mine—MLRB 112 Permit Application <br /> Exhibit G-1 <br />