_GENERAL DOCUMENTS - C1981017 ‎(138)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY --
Department of Natural Resources H�°F ep �
0
1313 Sherman St.,Room 215
Denver,CO 80203
Phone:[phone] 1876
FAX-[phone]
Roy Romer
Governor
Michael B.Long;
Division Director
DATE: August 23, 1993
TO: Jim Pendleton
FROM: Larry Routten
RE: Stability of the Toe of the Old Refuse Pile at Coal Basin
Mine (C-81-017)
DMG recently appealed a TDN from the AFO/OSM regarding failure of
a ditch at the toe of the Old Refuse Pile at Coal Basin. A copy of
the appeal request is attached. In that appeal (para 1, Page 3) ,
DMG indicated that a geotechnical investigation of the pile would
be initiated and concluded within thirty days. Steve Renner asked
that you plan another visit to the site to evaluate the apparent
instability of portions of the pile.
In essence, we need a determination as to whether the ditch at the
toe of the pile is a cause of instability of the pile. Since the
pile is a pre-law structure, the operator presently has no
liability for the lower portions of the pile. However, if it is
determined that instability of the pile is a result of the ditch
(which has been used and maintained throughout the life of the
mine) , an enforcement action including that portion of the pile may
be appropriate.
Please let Tony Waldron know when you will be able visit the site
and if any additional assistance is needed. In order to abide by
our commitment to OSM, this study should be done by mid-September.
Let me know if there is a problem with scheduling.
cc: Steve Renner
Tony Waldron
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