2008-11-26_PERMIT FILE - M2008080

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EXHIBIT G Water Information Introduction The Journey Ventures Pit is located in the southeast % and the southeast % of the northwest % of Section 7, Township 5 North, Range 64 West of the 6th P.M., in Weld County, Colorado. The proposed mining site is located approximately 1 mile north and 1 mile west of the Town of Kersey, and approximately 1 mile north of State Highway 34 as shown in Figure Exhibit G-1. The South Platte River is approximately 2,500 feet north of the site and the North and South Branches of the Plum Ditch are adjacent to the north side of the permit boundary. The operation will consist of sand and gravel production and will impact the South Platte River in the form of depletions due to evaporation and operational losses associated with mining. Mining of the Journey Ventures Pit will last for approximately 15 to 20 years. Once reclamation is complete, a reservoir will be created with a total surface area of approximately 56-61 acres. The depth to groundwater ranges from 5 to 11 feet within the permit boundary (measured in MW-1, MW-2, and MW-5, See the attached piezometer measurements table). The site will be mined down to a depth of 55 to 80 feet after Phase 2, thus exposing groundwater to the atmosphere. This exposed groundwater, along with the operational losses associated with the extraction of sand and gravel deposits, will impact the South Platte alluvial aquifer. These impacts will cause river depletions that must be augmented. No groundwater will be exposed during the mining of Phases 1 and 2 as the ground water depths are lower than the elevation of 4594. To enable dry mining at the Journey Ventures Pit, there will be dewatering trenches around the various phases of the site. These dewatering trenches will change in length throughout mining. The maximum length will occur when two phases are completely mined, but before the reclamation has begun on any given phase. The maximum size of dewatering trench will be 2,300 feet long and 5 feet wide, or 0.26 acres of exposed surface area. This water will be collected in a 50 foot by 100 foot discharge settling pond. After sediment has settled from the water it will be pumped into an irrigation lateral, which traverses the site, and eventually reaches the South Branch of the Plumb Ditch and is discharged into the South Platte River. As mining progresses, the dewatering trenches and discharge settling pond will shift as various cells are reclaimed. The gravel pit will have a slurry wall liner constructed prior to Phase 3 or at some point between Phase 3 and 11 of the mining per the reclamation plan. Water Requirements Water use at the Journey Ventures Pit will include evaporation from exposed groundwater, dust control of haul roads and stockpiles, and water retained in material removed from the site. Evaporative Loss Evaporative losses are dependent on the exposed water surface area, which may shift throughout the mining operation, but will not exceed the maximum. Exposed surface area at the Journey Ventures pit will include groundwater exposed in the dewatering trenches and discharge settling pond. The maximum exposed surface area at the site during mining is Journey Ventures, LLC JaT Consulting, Inc. Journey Ventures Pit V I DRMS 112 Permit Application 29