2003-12-15_REVISION - M1998014 (2)

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The reclamation plan calls for returning the disturbed areas, after mining and reclamation, to a land use that is "general agricultural". This land use is consistentwith that found in the surrounding area. Because of the "dry land" nature of the seed mix presented herein, irrigation of the disturbed areas will not be attempted. The predominate feature of the reclaimed area will be a flat graded area appro>amately 25 feet below the surrounding undisturbed elevation. A Reclamation Plan Map depicting the configuration of the reclaimed ground surtace can be found in Exhibft F. Reclamation will be conducted in a phased manner and will start in each phase at the time when the sand and gravel resource has been depleted. In other words, reclamation may happen during the same time as gravel extraction activities are occurring in each phase. Since no more than 30 acres will be disturbed at one time. Except the staging area, reclamation efforts will begin prior to and simultaneously with the next sand and gravel removal process. The initial reclamation efforts, consisting of sloping and grading began during 2001a1ong the westerly boundary of Phase One. Reclamation will occur on a 12 to 18 month cycle until alt mining activities have ceased. BACKFILLING AND GRADING - As each of the extraction have the resource removed, the backfilling and grading activities will commence except for any working gravel faces(s). The stockpiled overburden will be hauled from its storage area adjacent to the mining area by mobile equipment and placed where required to achieve a level topography and properly backfilled slopes. In order to achieve a "natural" appearancethe side slopes of the extraction they will be re-graded irregular and will range from no steeper than a ratio of 2:1 (horizontal to vertical) to a ratio of 3:1. Approbmately 50 percent of the total length of the slopes will be graded to the 2:1 ratio. Backfilling and grading will be done by dozers, and/or, scrapers which will compact and stabilize the overburden material. To insure stability of the slopes, material will be placed in 12 inch I'rfts and compacted to a minimum density of 85 percent. In the event that material delivered to the facility is used in the backfilling and grading operations, the following procedure will be implemented to insure that the material is clean and inert: 1. The individual or company delivering material to the facility is required to sign an affidavit certifying that the material is: clean and inert, the originating source of the material, and the estimated volume. Atthe discretion of the facility operator, the certification may also include an environmental audit of the source site prepared by a Colorado Registered Professional Engineer or a Registered Environmental Manager. 2. During the stockpiling process, the facility manager, and those individuals who operate the stockpiling equipment, will conduct constant visual analysis of the delivered material on a truck by truck basis. At a minimum, the visual evaluation will identify that the soil does not have any hydrocarbon contamination, hazardous substances, or other solid waste. 3. In the event that contaminated material is ident~ed, all work in the immediate area will cease and a Colorado Registered Professional Engineer or a Registered Environmental Manager will becontacted by the facility operator. The listed qualified individual(s) will prepare, supervise and implement a Remediation and Disposal Plan conducted in accordance with the requirements of the governing regulatory agencies. TOPSOIL REPLACEMENT -Topsoil replacement will occur in a phase by phase manner using mobile equipment once all re-grading of the area disturbed by mining is complete. Topsoil will be replaced to a thickness of at least 8 inches, which is appropriate to establish vegetation communties consistent with the post mine land use. RE-VEGETATION -The intent of the re-vegetation is the establishment of plant communities consistentwith the post-mine land use. After topsoil replacement, seed bed preparation and stabil¢ation will be conducted and will Rev. 08/10/03