2021-09-09_REVISION - M2004044 (10)

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Types of Reclamation acres Reclamation of the proposed permit area will contain three land forms; uplands, agricultural, and lined, open water reservoirs. Cottonwoods and shrubs will be planted along the South Platte River on the eastern side of the east cell. Timing and installation of the plantings will be coordinated with the Urban Drainage and Flood Control District. It is anticipated that these plantings will be established as part of the concurrent reclamation of the site. Plantings will be installed when mining commences in the East Cell (Phase 2). Plantings will be installed by a reclamation contractor in September and hand watered until the ground freezes. Plantings will be monitored in the spring to make sure they are leafing out, replaced as necessary to provide the quantities as originally installed and watered as necessary through the first three growing seasons to establish. Common Name Botanical Name Planting Size Quantity Plains Cottonwood Po ulus deltoides 10 gallon 36 American Plum Prunus americana 1 gallon 40 Choke Cherry Prunus vir iniana 1 gallon 40 Western Sand Prunus besseyi 1 gallon 40 Cherry Coyote willow Salix exi ua 1 gallon 40 The primary reclamation process will be backfilling the slopes of the mined-out areas to be reclaimed as reservoirs backfill of the partially reclaimed area on the northern end of the East cell to create an upland meadow. Overburden, and non-marketable materials from the site will be used as backfill. As mined out cells are backfilled, rough grading will establish the slopes and elevations necessary to facilitate the appropriate land form for that specific area of the site. In upland areas backfill materials will be placed to an elevation near or below the premining surface elevation. For areas where reservoirs are to be located, backfill will be used to create pond side slopes. Pond depth may extend all the way to bedrock and side slopes will be 3H:1 V or flatter. Except for pond slopes below normal average highwater surface elevation, all areas disturbed by mining activities will be prepared with topsoil to a minimum of 6 to 12 inches and revegetated during reclamation. Revegetation will generate a blend of upland grass species. Given suitable precipitation, seeding should produce good vegetation cover over much of the reclaimed site. Roads not necessary for future access and other disturbed areas will be reclaimed with topsoil and overburden replacement and vegetative cover to stabilize the areas and minimize erosion. Reclamation Measures/Materials Handling All available topsoil and overburden material will be used for backfilling and reclamation. Earth moving equipment may include, but is not limited to dozers, loaders, scrapers, and excavators. Additional farm equipment for grading and seeding may be used for revegetation activities. Materials Handling- Backfilling The site will be concurrently reclaimed to create the water storage reservoirs. Compaction for the reservoir side slopes at this site will be 95 percent (or better) Aggregate Industries—Tucson South Amendment—MLRB 112 Permit Application Exhibit E-3