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Reclamation Plan <br />EXHIBIT E <br />This plan covers the Greeley 25 Avenue Site and proposed amendment area. No changes to other areas <br />of the existing Greeley West Pit are made as a result of this plan. <br />Final Proposed Land Use <br />The proposed final land use for the 25 Avenue Site remains developed water resources. The <br />principal goal of reclamation is to separate the existing SW Ponds from the rest of the alluvial <br />groundwater system, creating a below -grade reservoir and adding to the site's developed water <br />resources. Additionally, portions of the NE Pond and SE Pond will be backfilled as part of the <br />overall site grading plan. Areas outside of the created below -grade reservoirs will be graded and <br />revegetated to a combination of upland and wetland open space. This land use of below -grade <br />water storage and general open space is consistent with existing and future land uses in the area. <br />General Overview of the Reclamation Plan <br />Reclamation of the proposed 25 Avenue Site is fairly straightforward. Lining the mining cell <br />that excavated the SW Ponds will require establishing a relatively impermeable seal on the sides <br />and bottom of the excavated area. Slurry wall technology has been used successfully in many <br />situations to provide the vertical, relatively impermeable barrier between alluvial groundwater <br />and below -grade reservoirs. This slurry wall liner will effectively separate the water inside the <br />reservoir from adjacent alluvial groundwater. At the 25 Avenue Site, as in many areas of <br />Colorado, the shale and claystone bedrock encountered below alluvial deposits provides an <br />excellent low permeability barrier for the bottom seal of below -grade reservoirs. The existing <br />below -grade reservoir on the 25 Avenue Site was created using slurry wall technology. Based <br />on this understanding and experience, conditions at the 25 Avenue Site amendment area are <br />ideal for slurry wall construction and below -grade water storage. <br />As the below -grade water storage is established, the remaining area within the proposed permit <br />boundary will consist of reservoir infrastructure and shoreline, upland native grasses, backfilled <br />wetland /riparian areas, access roads and/or trails, and reclaimed or otherwise undisturbed land. <br />Non - marketable mine material will be used to backfill portions of the NE Pond and SE Pond <br />creating a combination of upland and wetland areas. Since the reservoirs may require routine <br />maintenance and the reclaimed site will allow for limited public access, access roads, trails, and <br />public facilities may be left as part of the reclamation. <br />The processing plant and any associated conveyor systems will be removed from the site during <br />final reclamation activities. Roads not necessary for future access and other disturbed areas <br />associated with the processing plant and conveyor system will be reclaimed with topsoil <br />replacement and vegetative cover to stabilize the areas and minimize erosion. Fencing <br />separating areas of public access from areas of active mining may also be removed during final <br />reclamation. Any portions of concrete pads or anchors left in place will be below the existing <br />ground level, covered with overburden and topsoil, and revegetated. <br />Greeley 25' Avenue Site <br />DRMS 112 Permit Amendment Application Page 10 <br />