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Kate Pickford <br />Division of Minerals and Geology <br />Page 3 of 7 <br />January 3, 2005 <br />wash plant will be pumped from the wash plant to the pond. Each pond will be <br />constructed to catch the majority of the solids while passing the remaining effluent <br />on to the next pond. The clear water from the last pond in the series is re-circulated <br />back to the wash plant. Once the first pond in the series is filled with fines to the <br />point that it cannot be utilize further for storage of the wash plant fines, a new pond <br />is built, the number two pond becomes the number one pond and the effluent is <br />directed into it, and the process is repeated. The old number one pond is allowed to <br />set until the material can be handled mechanically. At that point the material will be <br />used for one or more of the following purposes: <br />a) This material will be used as needed for backfill during the construction of the <br />slurry wall required to seal the next pit to be mined; <br />b) It will be spread out on a portion of the bottom of the pit to dry and either sold or <br />mixed with other suitable waste material from the pit to form a part of the clay <br />zone of the embankment slope liner to be constructed during reclamation; and/or <br />c) It will be spread out on the bottom of the pit to help form a seal for the water <br />reservoirs being created as the intended end-use of the reclaimed pits. <br />4) Ditches and Dewatering System: Topsoil will be stripped from within the area of <br />disturbance. Topsoil and overburden will be stripped from mining area. This practice <br />will create a depression approximately 3 feet deep within which all mining related <br />activities will be conducted. The proposed mine site is relatively flat; consequently, <br />any stormwater accumulating within the disturbed area will infiltrate into the sand <br />and gravel zone and not run off site. The topsoil and overburden stockpiles placed <br />along the outside edge of the permitted area of disturbance will form an additional <br />buffer to soak up any excess storm water. If needed, silt fences will be used to <br />catch stormwater runoff. Any storm ditches constructed will be temporary in nature <br />and constructed to direct the flow of water toward the inside of the pit. They will be <br />constructed as "V" ditches with either a grader, dozer or front end loader. The depth <br />of the ditches are expected to vary from less than 0.5 feet to not more than 2.0 feet. <br />Potential dewatering trench locations are shown on the attached Exhibit C-3. As <br />stated above, however, the trenches will be located within the perimeter of the <br />mining area and will be relocated as necessary to move both stormwater and <br />dewatering water into the sump area. <br />Rule 6.4.5 Exhibit E -Reclamation Plan <br />5) Mulch: The applicant has found through years of reclamation experience at various <br />sites throughout Colorado that mulching is not always needed to promote healthy <br />seed growth. Mulch will be used if necessary. <br />6) Natural Resources Conservation Service Recommendations: The applicant will <br />commit to maintaining the piles at a slope no steeper than 2:1, and will endeavor to <br />implement 3:1 slopes whenever possible. Site conditions may require that topsoil be <br />stockpiled at 2:1 slopes to allow a greater amount of material to be stored in a <br />smaller footprint, and thus minimizing the possibility that a pile will need to be <br />relocated as mining progresses. If a 2:1 slope is used, the applicant will hydroseed <br />the stockpiles with the recommended species. If a less steep slope can be <br />