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Banks and Gesso, LLC Exhibit G -Water OVBNIEW ~~U ;. ~ . ._ . t~ ,.,.." OCT 0 2 2006 Division of Reclamation, Mining and Safety The Sundance Sand and Gravel Resource is an alluvial deposit with limited acreage in the floodptain of the Fountain Creek. Test pits preliminarily show an average groundwater elevation ranging from 5 to 15 feet below the land surface across the site. By its nature, recovery of the alluvial deposit may have effects on surface and subsurface water systems. Based on standard practices, no adverse quantitative or qualitative effects to surface waters are expected to result from the proposed operation. Groundwater effects will be mitigated to prevent adverse impacts. Water Requirements Water demand at the proposed construction materials operation will be generated by (a) worker demands for potable water, (b) dust control, (c) depletions due to evaporation (e.g., gravel well), and (d) losses for water contained in mining material. The applicant retained a professional hydrologist to study the proposed use and determine the water demands it would generate, which results are discussed here. Water demands on the site are estimated to total 149.8 acre-feet per year. Potable and sanitary uses for an estimated 15 on-site employees will annually require approximately 50,000 gallons. Given a limited footprint for active mining, dust control annually requires approximately 4 acre-feet. Evaporative losses are estimated at 86.7 acre-feet per year, and water consumed in the extraction and processing of mining material is estimated at 58.9 acre-feet annually. The operation may also include a concrete and/or asphalt manufacturing facility. Water inputs for this use will be analyzed and secured in a process supplemental to the reclamation permit. Potable and sanitary water needs will be supplied by water trucked onto the site from vendors. Any consumable water required to fill other demands above will be adequately supplied by operator interests, including commitments and options through the lessor Sundance Sand and Gravel Resource utiui o Lafarge West, Inc. 17 September 2006