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New Elk Mine C1981012 MT6 updates 6 January 18, 2013 <br />#29: Task 141 is for shaping and grading the expansion portion of DWDA #2 that was approved during <br />MR112. This task remains in the estimate. <br />#30: Task 144 has been included in Task 095. Task 144 has been eliminated. <br />#31: NECC had a question about the different material consistency between tasks. Task 146 was included <br />with the approval of MR114. MR114 approved drilling of 6 resource development holes. One hole was <br />located along the Picketwire valley adjacent to the railroad grade. The other 5 holes were located to the <br />south along ridge tops and in very steep terrain. The material consistency and weight was chosen to best <br />represent the conditions specific to the task. The Division consolidated Task 146 into Task 133. <br />#32: The C& W train shop yard area was mapped as DNR as shown on Map 15. This location would not <br />receive topsoil. Task 152 has been eliminated. <br />#33: Tasks 154 -156 are associated with approval of TR60, which approved expansion of DWDA #2 to the <br />west and relocation of a topsoil pile to Topsoil Stockpile #2. Tasks 167 -169 are associated with approval of <br />TR66, that approved change of RDA Access road to a Haul road, and construction of an employee parking <br />lot, changed a portion of DWDA #2 configuration, added a culvert and revised the drainage plan near the <br />RDA conveyor. The Division concurs that ripping, grading, topsoil and seeding of this location is already <br />included in other tasks since this location in not disturbing new area. Tasks 154, 155, 168, 169, 170, and <br />171 have been eliminated. <br />#34: Task 161 was the result of construction of an unpermitted road, "Zigzag" road to the east of the RDA. <br />Drill seeding and most equipment cannot access this site. NECC has successfully used the small <br />hydroseeder. The Division revised this task to reflect hydroseeding and mulching. <br />#35: The Division does not believe that topsoil found in New Elk permit area would meet the definition of <br />1600Ibs /cubic yard high organic matter loamy soils. The Division finds that soils found in the Purgatoire <br />Valley in southern Colorado tend to be rocky and have a higher clay content than the loamy soils expressed <br />by a 1600 Ibs /CY topsoil (Caterpillar Performance Handbook Edition 40). The Division has used "Earth -dry <br />packed ", 2550 Ibs /cubic yard, for topsoil material. The material weight chosen is also specific to the task <br />and location being conducted. Subsoil may be better represented by "decomposed rock -25% rock, 75% <br />earth ", and excavated material may be represented by "decomposed rock -50% rock, 50% earth" depending <br />on the location and characteristics of the material being excavated. The Division has tried to be consistent <br />with using "earth -dry packed" for tasks associated with topsoil placement as appropriate. <br />#36: The Division uses "average operator" for Job correction factor. Other components of the job <br />correction factor are material consistency of the material specific to the task, the method being used, <br />example for a dozer task is the material being pushed piled in a stockpile 10 feet or higher, or being dozed <br />over a cliff, or slot dozing. For most bulldozer tasks the dozing method chosen by the Division is "general <br />dozing ", however this is specific to the task being conducted. Job efficiency is based on the number of <br />shifts per day. Please also realize that the estimate represents the costs the Division would incur should <br />the state be required to complete the reclamation. <br />