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EXHIBIT D MINING PLAN <br /> 1 . Introduction <br /> The following is the mining plan for the proposed North Hangs Mine to be operated by permittee <br /> WSM. WSM proposes to mine the North Hangs Mine gravel deposit to support its construction <br /> materials activities in the Silt, CO area. Material will be mined and processed at the North <br /> Hangs Mine. There is sufficient topsoil and overburden onsite to successfully reclaim the site to <br /> its final condition of a lake with rangeland slopes. Crushed rock, sand, washed rock, and <br /> concrete will be produced on site. <br /> 2. Pre-Mining and Topsoil Stripping <br /> The site of the proposed North Hangs Mine is currently irrigated fields (see Map C-1). The <br /> Bernudy Ditch (WDID 4500524)1 is located within the permit area but will not be affected by <br /> initial mining. Eventually, a reroute pipe will be installed to maintain the ditch for its users (see <br /> Map G-2). <br /> Prior to beginning activities on the site, the boundaries of the affected area will be clearly <br /> marked. Signs and markers will be posted at the mine entrance listing the name of the Operator, <br /> Western Slope Materials, LLC (WSM), and the operation name, "North Hangs Mine"; a <br /> statement that a reclamation permit for the operation has been issued by the Colorado Mined <br /> Land Reclamation Board; and the DRMS permit number. The current access to the property will <br /> be used for mining (Maps C-2 & C-4). Internal roads and ramps will be used throughout the life <br /> of the mining operation as needed and will all be reclaimed. Exhibit C maps show the pre-mine, <br /> mining plan, and cross sections. <br /> Topsoil and overburden will be stripped at North Hangs Mine and either placed in stockpiles and <br /> berms or direct placed to create final reclamation slopes. This stripping will take place in <br /> advance of mining of areas but is not anticipated to happen all at once. Exhibit C maps show <br /> the areas of disturbance. Berms will be installed at the start of operations on the site as part of <br /> stormwater controls (Maps C-2 & C-4). Berms will be vegetated within 90 days of construction. <br /> Topsoil that is stripped and not required for the construction of the stormwater control berms will <br /> be immediately placed as part of contemporaneous reclamation, stockpiled on-site in the topsoil <br /> storage area, or shipped offsite. Temporary stockpiles of overburden or topsoil required for <br /> reclamation will typically be <20 feet in height. Temporary stockpiles will be located in the <br /> designated area shown on Exhibit C maps. Mining will take place to the slopes identified on <br /> Exhibit C maps. Backfill will take place to achieve final reclamation slopes and grades. <br /> Overburden present on site will be stripped during mining and either placed directly on mined <br /> ' https://dwr.state.co.us/Tools/Structures/4500524 <br /> North Hangs <br /> December 2024 D-1 Lewicki &Associates <br />