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6. The sediment pond will be constructed near the plant in the Phase One area. It <br />will be approximately 25 feet deep and cover a surface area of approximately 2 <br />acres. This would accommodate approximately one-third of the total waste fines <br />expected from the operation. The pond will be "mucked out" on an as-needed <br />basis to supply backfill materials for reclamation areas and/or to create more <br />available space for accumulating sediment. Sump areas and dewatering ditches <br />will be constructed once the slurry wall has been installed for Phase One. The <br />ditches will generally be located as shown on Exhibit C-3 Mine Plan Map, with <br />the sump areas ideally being located as close to the discharge point as possible. <br />However field conditions within the phase areas may dictate that the locations <br />shown be altered. The ditches and sump area will become unnecessary once all <br />water within the mine area has been pumped out, at which time these structures <br />would be mined through and incorporated into the final grade of the mine. As <br />mining within Phase One approaches the plant and sediment pond areas, these <br />facilities will be temporarily relocated to the pit floor to allow for mining of the area <br />previously occupied by those facilities. All of these facilities will be removed <br />upon completion of mining on the site. <br />7. Woody vegetation will not be used in backfill of the reclaimed pits. It will be <br />disposed of off-site. <br />8. As alluded to in #6 above, the general location of the dewatering ditches are <br />depicted on Exhibit C-3 Mine Plan Map. However, these locations may change <br />as field conditions dictate. The ditches will be approximately four feet wide by <br />four feet deep. <br />9. The Applicant intends to bond for 100% of the slurry wall. Table L-1: <br />Reclamation Cost Table estimates the cost of the slurry wall installation to be <br />approximately $531,000. <br />10. As discussed in #6 above, the sediment ponds, ditches, and sump areas will be <br />mined through and incorporated into the overall grading plan for the reclaimed <br />site. These facilities will not exist on the site once their usefulness has expired. <br />11. Per the NRCS' "Colorado Fact Sheet" for straw mulching, approximately two tons <br />of mulch per acre will be applied to reseeded areas. <br />12. The seed mix identified in Exhibit F is intended to be our proposed seed mix. <br />The discrepancy was an inadvertent error on our part and I apologize for the <br />confusion. <br />13. The project is estimated to require approximately 46 acre-feet of water per year. <br />This requirement includes supplies for dust suppression, employee consumption, <br />product moisture loss, evaporation from exposed water surface, and concrete <br />production. No surface rights will be used to offset depletions from mining. The <br />Applicant owns 2non-tributary groundwater wells approximately 25 miles south <br />of the site along the South Platte River. Per the State Engineer's guidelines for <br />gravel pit replacement sources, non-tributary groundwater wells can be used for <br />replacement purposes without requiring additional augmentation. These wells <br />have a production rate of 1,072 acre-feet per year and will be more than <br />