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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 Q tributary water courses, wells, springs, stock water <br /> ponds, reservoirs and ditches <br /> The South Platte River, Lupton Bottom Ditch and numerous monitoring well on the site. <br /> Please refer to Exhibit C for locations of water courses in close proximity to the site, including <br /> wells, springs, stock water ponds, reservoirs and ditches. <br /> (b) Identify all known aquifers <br /> The Site is underlain by the South Platte alluvial aquifer. <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 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 flow rates and annual volumes for the <br /> development, mining and reclamation phases of the project. <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 Fort Lupton <br /> Gravel Mine aggregate mine is 42 inches according to NOAA Technical Report NWS 33, <br /> Evaporation Atlas for the Contiguous 48 United States. Monthly evaporative losses are <br /> determined using percentages specified by the State Engineer's Office for locations below <br /> 6,300 feet. The nearest weather station is in Ft. Lupton/Brighton where the average annual <br /> precipitation is 12.99. Effective precipitation, that part of historical precipitation which was <br /> consumed by native vegetation on land to be covered by water surface, is conservatively <br /> estimated to be 70 percent of the total precipitation. The annual average effective <br /> precipitation at the property is estimated to be 9.09 inches. When subtracting the effective <br /> precipitation from the gross evaporation yields, the net annual evaporation is 32.13 inches, <br /> or 2.68 acre-feet per acre. The annual amount of evaporation from open water surfaces is <br /> 1.34 acre-feet. <br /> Mining Production & Operations: Burnco Colorado, LLC expects to extract a maximum of <br /> 500,000 tons annually of aggregate material from the site. The water retained in the 500,000 <br /> tons will be replaced pursuant to the Substitute Water Supply Plan (SWSP). The total <br /> annual amount of water retained in the gravel product from mining activities totals 14.71 <br /> acre-feet. <br /> Bumco Colorado, LLC—Inouye Gravel Mine—MLRB 112 Permit Application <br /> Exhibit G- 1 <br />