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Water Quality, Surface and Ground: 16. Water bars will be built on existing roads to control erosion as directed by the authorizing officer: Grade S acin 2% Ever 200 feet 2-4% Ever l00 feet 4-5% Ever 75 feet 5+% Every 50 feet 17. The access roads and the mine site may require gravel if road conditions deteriorate due to mine traffic. 18. Design floodwater retention facilities (for storm water runoff) using the 25 year recurrence interval, 6 hour precipitation event (estimated to be 1.6 inches of precipitation, from: NOAA Atlas 2 "Precipitation-Frequency Atlas of the Western US") 19. Water diversions, including the settling pond, will be removed after reclamation of the site has been completed and site has been stabilized. 20. Submit a copy of the storm water plan required by Colorado Department of Public Health and Environment, Water Quality Control Division - Stormwater Program prior to beginning operations. Soils: 21. The proposed project area disturbance will be seeded with a BLM approved seed mix to stabilize soils and prevent erosion. Revegetation will follow immediately after mining operations are complete. Should revegetation attempts fail, seeding will be repeated by the operator at the request of the BLM. All disturbed areas will be recontoured to the natural topography prior to seeding. 22. Vehicle and pedestrian traffic will be restricted to the mine site or established roads to prevent further soil mixing and compaction outside the proposed project area. 23. The top.12 inches of topsoil where available will be stockpiled and seeded for use when the site is reclaimed. Vegetation: 24. Seeding of the disturbed sites during reclamation will utilize a BLM approved seed mix, applied at a rate and method approved by BLM. No fertilizer will be applied at the time of seeding. Fertilizer applications, based on results of a soil analysis, can be made during the second growing season or after initial seeded species establishment. 25. BLM recommended seed mixture {attached): Standard Native Seed Mix for Sagebrush and Pinyon-Juniper Zone Mid Elevations (6,000-8,000'). The objective is to establish a vegetative cover comprised of native species which is at least equal to that present prior to the disturbance, and a plant species composition at least as desirable as that present prior to the disturbance. Specifically, there should be at least 8 native species present in the revegetated community, and species composition by cover should be made up of no less than 5% of each of the following types of plants: native perennial grasses, native perennial forbs, and shrubs. Average shrub height should be 1.5' or more. Access and Transportation: 26. County roads will be upgraded, as needed, with the approval of the County, by providing proper drainage and/or resurfacing for all-weather use with the incorporation of culverts, water bars, ditching and gravel.