2021-04-20_REVISION - M1983033 (20)

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Walstrum Spur Amendment, Exhibit E— Reclamation Plan April 2021 Ownership of parcels within the mine permit boundary is expected to remain with the current landowners. Generally, the flat areas of the mine excavation are expected to be future Industrial/Commercial/Public Gathering and Developed Water Resources use and the benched areas will be Privately-Owned Natural Resource Area. The Wildlife Habitat areas (Stage S) facing Highway 6 will remain undisturbed and will function as wildlife habitat. 3.1 Buildings and Structures The main structures used to produce construction aggregates are planned to be preserved for future use post- mining. The proposed scale house on Stage Y(Parcel C2) will also remain post-mining. The ancillary process equipment and structures without a future use will be removed at the completion of mining. Existing utility and access easements may be relocated during ongoing quarry operations and their final locations will be determined in the future. However, utilities and access to utilities, structures, and property as granted in each respective easement will be maintained at all times. Some utility and access easements are shared among multiple entities and may overlap each other. 4.0 RULE 3.1 REQUIREMENTS 6.4.5(2)(c) A description of how the Reclamation Plan will be implemented to meet each applicable requirement of Rule 3.1; CRS 34-32.5 112(3)(b) The Operator will comply with Rule 3.1 Reclamation Performance Standards as detailed in this Exhibit. This section is in response to Rule 6 as promulgated by the Mined Land Reclamation Board (MLRB). 5.0 REVEGETATION PLAN 6.4.5(2)(d) Where applicable, pians for topsoil segregation, preservation, and replacement, for sfabilization, compaction, and grading of spoil; and for revegetation. The revegetation plan shall contain a list of the preferred species of grass, legumes, forbs, shrubs or trees to be planted, the method and rates of seeding and planting, the estimated availability of viable seeds in sufficient quantities of the species proposed to be used, and the proposed time of seeding and planting; The revegetation plan discussed in this section is adapted from the revegetation plans approved in the previous permit applications. The Operator has used this adapted plan successfully within the Existing Quarry. Revegetation will be implemented to establish a diverse, effective, and self-sustaining vegetative cover without continued dependence on irrigation, soil amendments, or fertilizers. The revegetation plan is designed to establish a native vegetative cover that is at least equal in extent to the cover of the natural vegetation of the surrounding area. Since the intended use for the reclaimed benches is a natural resource area, the benches will be reclaimed with sloping consistent with the existing Reclamation Plan approved by the MLRB. The revegetation plan provides for the greatest probability, flexibility, and success in native plant establishment. The plan considers site-specific environmental factors such as seasonal patterns of precipitation, temperatures, and wind. Other factors, such as soil texture, fertility, slope stability, and aspect have been considered as well. Temporary trails will be constructed through the reclaimed areas to provide access for planting/seeding, weed management, and for inspection of the reclaimed areas. The majority of the disturbed area has a soil classification of Cathedral-Rock outcrop complex. This soil type typically has only a 10- to 20-inch depth to lithic bedrock and no soil over bedrock in the rock outcrop areas which cover a substantial portion of the disturbed area (see Exhibit I Soils Information). Topsoil is relatively absent from this operation as confirmed by test pits dug on-site in 2020 (see Geotechnical Stability Exhibit). All surface soils or growth medium will be blended with overburden and pushed to the side of the working benches until needed for concurrent reclamation. The growth medium will be kept free of contaminants so that it is capable of sustaining vegetation when reclamation begins. The growth medium will be located in areas where existing disturbances are ongoing, readily available for concurrent reclamation. The growth medium will be seeded if stored for more than one year. � TETRA TECH P a g e 3 � 7