REV10853

• Permit No: C1982056
• IBM Index Class Name: Revision
• Doc Date: 8/14/2002
• Doc Name: Letter & Application
• From: Twentymile Coal Company
• To: DMG
• Type & Sequence: MR179
• Media Type: D
• Archive: No

000
August 9, 2002
Tom Kaldenbach
Environ;nental Protection Specialist
Diviston of Minerals and Geology
1313 Sherman Street, Room 215
Denver. Colorado 80203
Twentvmile Coal Company
29515 Routt County Road # 27
Oak Creek, CO 80467
[phone]
RECE!!/ED
AUG 1 4 20A2
~1111i~On of Minerals and Geology
RE: Minor Revision 02-179, Installation of Water Recirculation Line from Fish
Creek Borehole to 7 North Escape Shaft and Miscellaneous Surface
Modifications
Permit No. C-82-056
Dear Mr. Kaldenbach:
Twentymile Coal Company is requesting a minor revision to the above referenced permit,
for the following activities:
• install water recirculation line from Fish Creek Borehole to 7 North
Escape Shaft and 10 Right Water line
• revise handling of NW vent shaft cuttings
• add discussion in permit text concerning YVEA line to railroad relay over
14 Right panel
• add an additional support at fan silencer
• add satellite warehouse/storage site
The installation of the water recirculation line will further increase Twentymile's ability
to recycle mine water. The line will be installed from the western cell of the Fish creek
Borehole treatment facility and terminate at the 7 North Escape Shaft or the 10 Right
Waterline. Along the course of the line 5 manholes will be installed to allow for using the
mine water for stock watering. Except for approximately 2550' of the line, it will be
constructed in existing road corridors. The 2550' of line will be installed in lands
previously mined and reclaimed by Colorado Yampa Coal Company. These lands have
received Phase III bond release. The line will be a buried so there will be no reclamation
work associated with the line after it is installed. The only structures associated with the
system are the pump and its controls in the pump house located on the western cell of the
existing treatment system and two new power poles and line from the existing substation.
It is planned to continue using the treatment system so that iron concentrations do not
become problematic underground.