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EXHIBIT G <br /> Water Information <br /> Introduction <br /> The Ogilvy River Farm Pit mining site is located in the Southeast % of the Southeast 1/4 of <br /> Section 5, Township 5 North, Range 64 West of the 6th Principal Meridian and the Northeast 1/4 <br /> of the Northeast '/4 of Section 8, Township 5 North, Range 64 West of the 6th Principal Meridian, <br /> in Weld County, Colorado. The proposed mining site is located approximately 1,500 feet south <br /> of WCR 60%, is adjacent to WCR 53 on the side, and is adjacent to the South Platte River on <br /> the south side of the site. WCR 53 is immediately adjacent to the east side of the permit <br /> boundary and the South Platte River is immediately adjacent to the south side of the permit <br /> boundary. Access to the site will be located at the east side of the permit boundary off of WCR <br /> 53. The dominant land use surrounding the property is agricultural and industrial. The operation <br /> will consist of sand and gravel production and will not impact the South Platte River in the form <br /> of depletions due to a slurry wall that will be installed prior to mining. Mining of the Ogilvy River <br /> Farm Pit site will last for approximately 5 years and 6 months. Once reclamation is complete, <br /> the water storage reservoir will be created with a total surface area being 44.71 acres. <br /> The depth to groundwater ranges from 3 to 24 feet within the permit boundary (measured in <br /> MW-1 through MW-4, See the attached piezometer measurements table). The site will be mined <br /> down to a depth of 68 to 85 feet thus exposing groundwater to the atmosphere. This exposed <br /> groundwater, along with the operational losses associated with the extraction of sand and gravel <br /> deposits, will impact the South Platte alluvial aquifer. These impacts will cause river depletions <br /> that must be augmented. Groundwater will be exposed during the mining once the mining <br /> depths reach an elevation of approximately 4581 feet. <br /> To enable dry mining at the Ogilvy River Farm Pit mining site, there will be dewatering trenches <br /> around the bottom of the mining slope. These dewatering trenches will change in length <br /> throughout mining. The maximum length will occur when the cell is completely mined, but before <br /> the reclamation has begun. The maximum size of dewatering trench will be 6,500 feet long and <br /> 5 feet wide, or 0.75 acres of exposed surface area. The water will be pumped into dewatering <br /> ditch, which traverses the site and ultimately into the South Platte River. <br /> As mining progresses, the dewatering trenches will shift to account for additional groundwater <br /> being exposed. The gravel pit will have a slurry wall liner constructed prior to the commencing of <br /> mining. <br /> Water Requirements <br /> Water use at the Ogilvy River Farm Pit mining site will include evaporation from exposed <br /> groundwater, dust control of haul roads and stockpiles, water for the wash plant (i.e. wash <br /> screen for concrete rock and sand) and water retained in material removed from the site. <br /> Evaporative Loss <br /> Evaporative losses are dependent on the exposed water surface area, which may shift <br /> throughout the mining operation, but will not exceed the maximum. Exposed surface area at the <br /> Ogilvy River Farm Pit mining site will include groundwater exposed in the dewatering trenches. <br /> jiiil' JET Consulting,Inc. WW Clyde <br /> Bernhardt Sand and Gravel Pit <br /> DRMS 112 Permit Application <br />