2009-01-15_REVISION - C1982056

• Permit No: C1982056
• IBM Index Class Name: REVISION
• Doc Date: 1/15/2009
• Doc Name: Adequacy Review
• From: DRMS
• To: Twentymile Coal Company
• Type & Sequence: RN5
• Email Name: JHB
• Media Type: D
• Archive: No

C1982056, RN5, Adequacy Review 2 1/16/2009
2) It is unclear from the PAP where the balance of RDA cover material will be transported from.
Approximately 70,000 cubic yards. of clay material are accounted for on the west side of the RDA
(relocated to a permanent excess spoil pile with the approval of MR233). 70,000 cubic yards of
material is adequate to cover only 15 acres of the RDA. The RDA is approximately 58 acres. Please
provide the Division with a cover material balance for the RDA. Please include haul distances for
transporting the material to the RDA. Please provide this information for the currently approved mine
plan. (Rule 4.10.4(5)).
3) Table 49A lists topsoil stockpiles. Under footnote (2) the reader is instructed that topsoil stockpile
locations for the 18RT shaft pad and access road are shown in Exhibit 8S. Exhibit 8S discusses the
sedimentology for the Fish Creek Vent Shaft Pad. This reference is confusing between the Fish Creek
Vent Shaft located in T5N R87W Section 25, and the 18RT escape shaft pad in T5N R86W Sections
10 and 11. There are no figures or maps included in Exhibit 8S that show the locations of the topsoil
piles. Please assure that the locations of the topsoil piles are included on an appropriate map. (Rule
4.06.3).
4) Table 49A provides a Topsoil Stockpile Summary. Comparison with Map 29 "Reclamation Map"
(dated 9/26/2007) and Table 49A found several discrepancies.
a) Topsoil stockpile SF-3 shows 109,410 cubic yard of topsoil in the pile. However, Map 29
shows 109,510 cubic yard of topsoil being distributed from Topsoil Stockpile SF-3. This is a
discrepancy of 100 cubic yards. Please assure that the Map and Table are in agreement with
the actual topsoil volume in the pile.
b) Topsoil stockpile SF-2 shows 55,861 cubic yard of topsoil in the pile. However, Map 29
shows 57,861 cubic yard of topsoil being distributed from Topsoil Stockpile SF-3. This is a
discrepancy of 2000 cubic yards. Please assure that the Map and Table are in agreement with
the actual topsoil volume in the pile.
c) Topsoil stockpiles assigned to the NMD power borehole and access road shows 4700 cubic
yard of topsoil in the pile in Table 49A. However, Map 29 shows 5551 cubic yard of topsoil
between the two topsoil stockpiles at the NMD power borehole and the access road. This is a
discrepancy of 149 cubic yards. Please assure that the Map and Table are in agreement with
the actual topsoil volume in the pile.
d) Topsoil stockpiles associated with 6MN shaft pad, access road and 6MN total 23,700 cubic
yard of topsoil in the pile in Table 49A. Map EX16E-M1 shows 17,700 cubic yard of topsoil
for all the topsoil stockpiles at the 6MN shaft pad, access road, and 6MN reservoir. This is a
discrepancy of 5000 cubic yards. Please assure that the Map and Table are in agreement with
the actual topsoil volume in the pile.
e) Upon approval of MR228, June 18, 2008, TCC expanded the l ORT Dewatering Borehole
pad. Any additional salvaged topsoil needs to be added to the topsoil balance, and Table 49A
revised as appropriate.
f) TCC has committed to salvaging topsoil stockpiled adjacent to the Middle Creek warehouse
at Mine No. 3 and using this soil material at the Fish Creek Tipple (PAP Fish Creek Tipple,
Rule 2.05 Operations and Reclamation Plans, page 2.05-37). Please include this volume in
Table 49A since is part of the overall topsoil balance.
6. TCC representative met with the Division on December 1, 2008 regarding structure of Peabody
Coal Company. Please assure that all owners, officers and director information are updated in