2016-05-31_REVISION - C1982056

• Permit No: C1982056
• IBM Index Class Name: Revision
• Doc Date: 5/31/2016
• Doc Name: Adequacy Review No. 1
• From: DRMS
• To: Twentymile Coal, LLC
• Type & Sequence: MR297
• Email Name: JLE
• Email Name: DIH
• Media Type: D
• Archive: No

Al COLORADO
Division of Reclamation,
Mining and Safety
i
Department of Natura; Resources
1313 Sherman Street, Room 215
Denver, CO 80203
May 31, 2016
Jerry Nettleton
Twentymile Coal, LLC.
29515 Routt County Road 27
Oak Creek, CO 80467
RE: Foidel Creek Mine; C-1982-056; Minor Revision No. 297 (MR297)
Adequacy Review No. 1
Dear Mr. Nettleton:
The Colorado Division of Reclamation, Mining, and Safety (Division) has reviewed the above referenced
minor revision. Several items will need to be addressed prior to the Division's approval of the revision.
Please address the following items:
1.) Proposed revised page 2.05-50.3 includes a change in the water treatment methods to be utilized
at the Fish Creek Borehole to include treating the water pumped from the mine with a flocculent.
This proposed change is not associated with the cleanup of the mine water discharged from the
pump resulting in the notice of violation CV -2016-001. Please remove this change in the revised
text regarding the water treatment method. This change will need to be processed under a
separate technical revision.
2.) Proposed revised page 2.05-50.10 ends with the last paragraph of the 19RT Dewatering Borehole
and Pipeline section. As proposed, a large portion of the 5 -Main North Borehole and Pipelines
and Future Passive Water Treatment System (MR14-283, MR15-288, and MR16-295) section
would be cut out of the permit. Please review the organization and pagination of these proposed
pages and update as necessary to insure text is not deleted or removed.
3.) Twentymile Coal proposes to update Map 23c of the permit once the cleanup activity has
occurred in order to accurately depict the new surface disturbance boundary. The Division
believes Map 29 would also be appropriate to revise to depict the change in the disturbance area.
The Division will stipulate the approval of this revision so that the updated maps 23c and 29 be
submitted within 15 days of when the cleanup activity is completed.
4.) Proposed revised page 2.05-50.4 indicates that the coal fines will be cleaned up and transported to
a bermed basin on the adjacent 15 -Left Shaft Pad. The Division believes this area is currently
being used as temporary storage for pond cleanings and should only be a temporary storage area
for these fines. Please revise this page to indicate where these coal fines will be taken for final
reclamation.
5.) Proposed revised page 2.05-101 does not follow with the preceding and following text. The
Surface Facilities section is currently on page 2.05-100, there is already a discussion of the
reclamation of the Fish Creek Dewatering facilities on page 2.05-106.2 of the permit and the
Rockdust Tank section is currently located on page 106.2. It would seem any revision to the
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1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http://mining.state.co.us *` _
John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director '« • IaIs _»