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Rifle Gravel Pit#1 June 2023 <br /> 1.3.1.1 Affected Lands <br /> Figure 2, Exhibit B depicts the Permitted Area, Affected Area, and 200-foot offset from <br /> Affected Lands. The Affected Land area is 19.00 acres. <br /> 1.3.1.2 Planned Material Storage Area <br /> The excavated wet gravel material will be stockpiled at the site of extraction and allowed to <br /> drain into the excavated pit and/or the underlying substrate. After the material is dry it will be <br /> transported to the Stockpile Area on the Operations Pad, where it will be stored until ready <br /> for processing. The Operations Pad will be a graded, compacted, graveled pad used to <br /> store equipment, pipes, fuel, scale house, restroom trailer and construction materials. <br /> Stockpiled material to be screened will be placed away from the active mining locations, and <br /> on the Operations Pad as shown in Figure 9, Exhibit C4 which depicts the mining activity <br /> extent for Phase 1, Phase 2, and Phase 3 30% and Figure 10, Exhibit C5, which depicts <br /> the mining activity extent for Phase 3 60% mined conditions. Section 5.2 discusses the <br /> estimated areas and volumes of the planned material storage for each mining phase. <br /> 1.3.1.3 Planned Topsoil & Overburden Storage Areas <br /> The extent (area and volume) of the planned temporary topsoil and overburden <br /> storage/stockpile areas was calculated assuming that all overburden material and topsoil <br /> that are not used for the construction and reclamation of the perimeter berms will be <br /> stockpiled on site. The excess overburden (30,423 cubic yards [CY])will be temporarily <br /> stored and sold as a secondary commodity. The excess topsoil (8,973 CY)will be <br /> temporarily stored and sold within 180 days as a secondary commodity. Approximately 566 <br /> CY of the excess topsoil will be retained from sale and stabilized with a temporary seed mix, <br /> then used for final reclamation purposes during Phase 3 and Phase 4 mining activities. The <br /> location of the Stockpile Areas is depicted on Figure 9, Exhibit C4 and Figure 10, Exhibit <br /> C5. These stockpile areas are located outside of the mining footprint but inside the <br /> perimeter berm, which provides physical separation between the stockpiles and any wetland <br /> or tailwater channel buffer areas and thus will prevent inadvertent sediment discharges. <br /> A typical soil profile illustrating the average conditions underlying the Permitted Area is <br /> provided in Figure 12, Exhibit D1. Earthwork volume calculations are provided in Figure <br /> 14, Exhibit E1. <br /> Section 5.2 discusses the estimated areas and volumes of the temporary topsoil and <br /> overburden materials. <br /> 1.4 Total Parcel Size <br /> The Rifle Pit#1 Property Boundary/parcel size is 58.7 acres. <br /> 1.5 Commodity to be Mined <br /> The site has approximately 292,810 CY of(dry) sand and gravel that will be mined from the <br /> property to provide materials for future projects. The projected duration of the commercial <br /> mining activities is three to five years. <br /> 1.6 Legal Description of the Permitted Area <br /> The legal description of the Permitted Area is provided in Section 2.0. <br /> 2 <br />