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Page 3 <br /> Mr. Peter Hays <br /> February ls', 2022 <br /> Weld County-Sandy Site Mix <br /> Bluestem (Champ, Chet) 1.00 Ibs plslacre <br /> Sand Lovegrass (Bend, Native, Ne27) 2.50 Ibs pis/acre <br /> Indian Ricegrass (Nezpar, Rimrock) 3.00 Ibs pis/acre <br /> Prairie Sandreed (Goshen) 0.75 lbs pis/acre <br /> Green Needlegrass (Lodorm) 1.50 Ibs pis/acre <br /> Little bluestem (Blaze, Cimarron, Camper) 0.75 Ibs pis/acre <br /> Yellow Indiangrass (Cheyenne, Holt, Scout) 0.50 Ibs pis/acre <br /> Switchgrass (Blackwell, Nebraska 28) 1.50 Ibs pis/acre <br /> Sand Dropseed 0.50 Ibs pis/acre <br /> Total: 12.00 pounds pls/acre <br /> 10. On Page 2 of Exhibit E, the Applicant states the reclaimed slopes in the water storage reservoir <br /> will not be steeper than a 3:1 ratio and will be reclaimed at a 4:1 ratio for the slurry wall lined cells <br /> mined at 1.5:1. Please explain the earthmoving processes to backfill and compact the slopes <br /> mined at the 1.5:1 slope to the reclaimed 4:1 slope. Bedrock will be excavated from the bottom <br /> of the pit and mixed with any left-over material inside the pit.A representative sample of the <br /> fill material will be analyzed for shear strength and optimal moisture content prior to <br /> backfilling the slope. Experience with previous reclamation slopes in the area using <br /> regional claystone has shown that a 4:1 ratio slope is stable with a mixture of claystone and <br /> left-over gravel. The material will be worked to the optimal moisture content as determined <br /> by Proctor compaction tests and placed back in to the slope at no more than one foot lifts. <br /> The lifts will be compacted with a sheepsfoot roller to tie lifts together. <br /> 11. On Page 5 of Exhibit E, the Applicant states to refer to the Reclamation Plan Map (Exhibit F) <br /> for a description of the size and location of each area to be reclaimed during each phase. Please <br /> update the Exhibit F map to indicate the acreages for each mining cell phase. 6.4.5 Acreages for <br /> each phase has been included on the Exhibit F map. <br /> Exhibit F-Reclamation Plan Map <br /> 12. Rule 6.2.1(2)(b) requires maps be signed by a registered land surveyor, professional engineer, <br /> or other qualified person. Please submit signed copies of the Exhibit F map. See attached signed <br /> Exhibit F. <br /> 13. The Applicant informed the Division the oil and gas well located in the northeast corner of Cell <br /> 6 was abandoned and the well peninsula will be included in the Mining Plan. Please provide a <br /> revised copy of Exhibit F-1 indicating the revised reclamation plan for the cell. See the attached <br /> revised Exhibit F. <br /> 6.4.6 Exhibit G - Water Information <br /> 14. On Page 1 of Exhibit G, the Applicant states stormwater collected in the active mine area will <br /> be managed through the dewatering system. Please provide a description of the design and <br /> operation of the dewatering system for the proposed mine site. Dewatering will be accomplished by <br />