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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 Brighton Ditch is located approximately 1,100 feet to the west of the project site and the <br />South Platte River is approximately 3,000 feet to the east. Please refer to Exhibit C for <br />locations of water courses in close proximity to the site, wells, springs, stock water ponds, <br />reservoirs and ditches. Also attached is a well inventory of surrounding wells plotted from <br />the Colorado State Engineer's Office data base (2000). We have requested updated <br />information from the State Engineer's Office. <br />(b) Identify all known aquifers <br />The site overlays the tributary alluvial aquifer of the South Platte River. In addition, the site is <br />underlain by the Lower Arapahoe Aquifer and the Laramie-Fox Hills Aquifer (George <br />VanSlyke, et. a1.1988, Geologic Structure, Sandstone/Siltstone Isolith. Both the Lower <br />Arapahoe and Laramie-Fox Hills Aquifers are part of the not-non-tributary and non-tributary <br />ground water of the Denver Basin, Colorado. Denver Basin Atlas No. 3, DBA-3. Colorado <br />Division of Water Resources, Office of the State Engineer.) <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. For this permit area, dewatering water collected will be discharged to the existing <br />adjacent Baseline Resource dewatering and discharge 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 />The following information was provided by Forrest Leaf, P.E. of Leaf Engineering, Inc.: <br />Projected Use And Consumption: Annual evaporative depletions will be the evaporation <br />from up to 4,356 feet of 4-foot wide de-watering trench, located outside of the slurry wall, will <br />take place. The total area of exposed water in the dewatering trenches is 1.50 acres. The <br />gross annual pan evaporation at the Baseline Resource aggregate mine is 65 inches <br />according to NOAA Technical Report NWS 33, Evaporation Atlas for the Contiguous 48 <br />United States (Plate 1). Gross shallow lake evaporation is 70°!° of the gross annual pan <br />Hall-Irwin Corporation -Parker/Dersham Sand and Gravel Mine - MLRB 112 Permit Application <br />Exhibit G -1 <br />