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New Elk Mine C1981012 MT6 updates 8 January 18, 2013 <br />Combine several small seeding tasks together; Task 134 MR107 seed 0.69 acre with Rangeland seed mix, <br />Task 139 MR111 seed 0.15 acres with Rangeland seed mix, Task 148 MR114 seed 1.38 acres with <br />Rangeland seed mix. Combine these three tasks into Task 134. Use 33% reseed rate. Task 139 and Task <br />148 have been eliminated. <br />Task 158: demolish bath house & pad TR61. Incorporate these items into Task 095. Task 158 has been <br />eliminated. <br />Task 167: RDA Haul road is permanent. Task 167 has been eliminated. <br />West portal regrading has been replaced with tasks associated with DWDA #3 TR65. <br />Task 62: Topsoil placement on DWDA #2: 9" thick. Haul from Topsoil Stockpile south of Purgatoire River. <br />Task 142 is incorporated into Task 62. Task 142 is eliminated. <br />Task 61: Cover material placement on DWDA #2: 3" thick. Haul from Subsoil stockpile south of the <br />Purgatoire River. <br />Task 143: DWDA #2 area is included in overall seeding of facilities. Task 143 is included in Task 085. Task <br />143 has been eliminated. <br />Task 173: Incorporated into Task 104. Task 173 has been renumbered to reflect ten -year liability <br />maintenance costs. <br />New Task 173 was added for site maintenance over 10 year liability period. Assume 40 hours per year for <br />the first 5 years, then 24 hours each year for the next 5 years of the 10 -year liability period. Maintenance is <br />expected to consist of limited ditch maintenance, culvert cleaning, general site maintenance. A CAT D3K <br />LGP -3P dozer would be utilized. The Division assumes a CAT 14M motor grader would be needed for 24 <br />hours each year over the ten -year liability period for general road and ditch maintenance. Weed control is <br />already accounted for in Task 090. Pond cleaning is already accounted for in Task 106, mob /demob for site <br />maintenance is accounted for in Task 111. <br />Task 95a: Demo tasks from task 95a have been incorporated into Task 095. <br />Task 95d: Demo task incorporated into Task 095. Task 95d has been eliminated. <br />Task 95e: Demo tasks have been incorporated into Task 095. Task 95e has been eliminated <br />Other observations noted while updating MT6 Reclamation Cost Estimate. <br />Map 17 out of date. Does not reflect permanent DWA, DWDA #2 or DWDA #3, and does not show C &W <br />yard and building within the permit area boundary. (Signed 3/24/1998) "Post- Mining Topography ". <br />