2020-01-10_REVISION - C1981010

• Permit No: C1981010
• IBM Index Class Name: Revision
• Doc Date: 1/10/2020
• Doc Name: Application
• From: Trapper Mining Inc
• To: DRMS
• Type & Sequence: TR124
• Email Name: RAR
• Email Name: JDM
• Media Type: D
• Archive: No

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P.O. Box 187
January 7, 2020
TRAPPBR MINING INC.
Craig, Colorado 81626
Ms. Robin Reilley
Environmental Protection Specialist
Colorado Division of Reclamation, Mining and Safety
1313 Sherman Street, Room 215
Denver, CO 80203
[phone]
RECEIVED
JAN 10 2020
DIVISIONC'_ I -C LAMATION
ktle&l c E,W SAFETY
Re: Trapper Mining Inc., Permit No. C-1981-010
Technical Revision TR -124. N Pit Update; Shrub Density Standard; Impoundment As-builts
Dear Ms. Reilley:
Enclosed is a copy of a mine and reclamation plan for N Pit, an update of the shrub density standard and
several impoundment as -built designs. The enclosed material includes text, tables and maps that present
the proposed changes. This includes 201.4 acres of additional re -disturbance in N -Pit. Previously
permitted re -disturbance acreage (161.4 acres) in TR -119 has been considered and removed from the
stripping and reclamation cost in the attached bond calculations. Appendix A. Page 2 demonstrates this
calculation. The revised bond calculation has also included the recent bond reductions associated with
SL -18 and SL -19. Significant proposed changes include:
• N Pit going from a dipline orientation to a strikeline orientation, with associated changes to
highwall mining orientations;
Creation of a temporary out -of -pit spoil dump necessary for final N Pit backfill;
The following revised permit text pages are enclosed and updated as follows:
• 3-15a. N Pit updated from dipline to strikeline; highwall mining orientation changed from west to
north -south.
• 3-15b. Eliminated discussion of N Pit from being evaluated for mining to will be mined.
• 3-15c. N Pit paragraph added to Reclamation Plan section.
• 3-44. Updated N Strike Pit boxcut discussion.
• 4-113, 4-116 & 4-119. Revised shrub density standard to either use shrub clumps or achieve a
higher density standard.
The following revised permit tables are enclosed:
Table 4.8-6 (pages 1 [4-185], 2 [4-186] and 3 [4-186a]) and Table 4.8-7 (pages 1 [4-189], 2 [4-
190] and 3 [4-190a]) to include as -built information for Deacon, Deal and Jeffway ponds.
The following additions to Appendices are enclosed:
Appendix A. Supplemental addendum to bond calculations currently in App A.