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10. The slopes of the excavation will be made a maximum of 4H:1 V slope or flatter. <br /> The slopes will be graded as the excavation proceeds and permanent vertical pit <br /> walls will not be necessary. <br /> 11. The Pit Boundary dimensions are shown in this Mining Plan Map. Roughly the <br /> pit measures 605 feet along the west side, 940 feet along the North face, 170 <br /> along the West face and 1,010 feet along the South Face. <br /> 12. Water will be used within the pit will be for dust control only. The source of this <br /> water will be from the Town of Kit Carson. Total usage will be approximately 1 <br /> acre-foot. We will have a written agreement for purchasing water from them. <br /> 13. A storm water management plan will be filed with the Colorado Department of <br /> Health to maintain the hydrologic balance. <br /> 14. This excavation is into virgin ground. It is not anticipated that any foreign <br /> materials will be encountered. If some were encountered,they would be disposed <br /> of in a manner to prevent unsightliness and protect the drainage system from <br /> pollution, as determined for the specific material. <br /> 15. Since the before and after use of the land is farmland, minimal change will result <br /> to the hydrologic balance, no off-site damage will occur and the slopes and other <br /> general configuration of the land will be more stable for the current and reclaimed <br /> use due to elimination of existing erosion(caused by normal natural wind and <br /> water action over time) in the stable, steeper than 4:1 slopes.No standing water <br /> will be retained longer than 24 hours. <br /> 16. Excavation will be kept above the known ground water elevation since the mining <br /> will be done out of the side of a hill therefore the operation will not require any <br /> type of dewatering. <br /> 17. There are 4 wells within %mile of the pit. The shallowest of the wells is 30' <br /> deep. Ground water is not expected to be encountered but if it is we will recover <br /> it with a minimum of 24 inches of the same material from the pit. <br /> 18. This property is flat in the mining area. It is the intent to excavate the property so <br /> as not to allow any runoff from excavated area and not intersect any natural <br /> drainage ways. Adequate temporary berms (as shown in this Exhibit—Mining <br /> Plan Map), berms will be built on the North, East and South faces to contain <br /> runoff but not hold water for more than 24 hours. <br /> 19. The operation will not affect any Colorado water laws or regulations governing <br /> injury to existing water rights. No ponds will remain to evaporate water, nor will <br /> any water course be interrupted.No change in the runoff pattern will result. <br />