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final size of the groundwater ponds and backfilled areas will depend upon the availability of <br />backfill materials and whether or not Cell 4 is sealed for water storage. As backfilling, <br />grading and seeding around the ponds is completed, the ponds will be allowed to fill with <br />groundwater, reducing the extent of disturbed area during the mining operation. However, <br />the final size and extent of the groundwater ponds is not fixed. Although the ponds will be <br />created and stabilized for final reclamation, they may be partially backfilled to reduce their <br />overall surface area. <br />The total area of the open groundwater ponds is expected to be no greater than 178 acres. <br />If Cell 4 is sealed for water storage or the groundwater ponds change in size by more than <br />25 percent of the proposed mine area, the applicant will provide a technical revision to the <br />Division with the final groundwater pond sizes and configuration. <br />Some roads inside the permit boundaries will remain for site access by the property owner <br />or others in accordance with access easements. Roads not necessary for future access <br />and other disturbed areas associated with the conveyor system will be reclaimed with <br />vegetative cover to stabilize the soil and minimize erosion. <br />Mining and agriculture are the predominant land uses to the east, north and west of the <br />existing and proposed permit boundary. Open space, trail and residential development lie <br />to the south of the Cache La Poudre River. Therefore, the combination of proposed post <br />mining uses is compatible with surrounding land uses. There are existing and planned oil <br />and gas facilities on the site. Mining and reclamation activities are being managed to allow <br />for continued operation and development of mineral resources. New drilling activities will <br />be encouraged to utilize existing, disturbed areas to the maximum extent possible. <br />Reclamation at the Riverview Resource site progresses concurrently with mining and will <br />continue in this manner according to the phases outlined in the Mine Plan. Reclamation, <br />including re-grading and seeding, will be completed within five years following the <br />completion of mining or filling operations for each cell. <br />The mining and reclamation will leave no high walls on the property. No acid forming or <br />toxic materials will be used or encountered in the mining. There will be no auger holes, <br />adits, or shafts left on the site. <br />Reclamation Measures - Material Handling <br />Site grading will be performed to create a final topography appropriate with the proposed <br />final land uses. <br />As mining progresses, overburden and process fines will become available and used for <br />backfilling of the excavated mine cells. Inert material generated through recycling activity <br />on site and additional inert material generated off the permit area may also become <br />available for backfilling of the mine cell areas. This material could include concrete, soil, <br />brick, and limited amounts of asphalt. Generally, any asphalt brought in will be recycled <br />into new product. Since this material is inert, there will be no release of pollutants. If <br />applicable, the applicant will provide to the Division the appropriate notices and affidavit <br />Riverview Resource <br />Amendment to Permit M1999098 112c <br />Page E2 of E6