REP30907

• Permit No: C1982056
• IBM Index Class Name: Report
• Doc Date: 3/12/1999
• Doc Name: 1st & 2nd Half 1998 Review Letter
• From: Jim Pendleton
• To: Janet Binns
• Permit Index Doc Type: Subsidence Report
• Media Type: D
• Archive: No

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9 STATE OF COLORADO
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources
1353 Sherman 6t., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
DATE: March 12, 1999
T0: Janet Binns
FROM: Jim Pendleton ' ~' _
RE: Foidel Cr k Mine First & Second Half,
1998 Subsi ence Reports
(Permit No: C-82-056)
UIV1510N OF
MINERALS
-&
GEOLOGY
0.EC lA NATION
MININ G'SAFETY
Bill Owens
Governor
Greg E. Walther
Executive Director
Michael 6. long
Director
I have reviewed the two semi-annual 1998 subsidence reports you forwarded
for the Foidel Creek mine. Twenty Mile Coal Company (TMC) submitted its semi-
annual "First-Half Subsidence Monitoring Report for 1998" and the
corresponding "Second-Half Subsidence Monitoring Report for 1998". These
reports present survey data and visual reconnaissance monitoring reports for
the affected structures and Foidel Creek. The methodology and procedures used
in preparing both documents appear appropriate and in compliance with the /-
permit requirements.
The structures monitored during the reported period include Routt County Road
#33, the Union Pacific railroad spur track, and the Hayden-Gore Pass, Wolcott
Tap -Wolcott, and Western Area Power Administration high voltage electric
transmission lines. Foidel Creek was also inspected and profiled above Panels
6, 7, 8, and 9 Right, each of which subsided during the report period.
The First-Half report is brief, but appropriate and complete, as it is only
intended to be a transmission of data. I recommend its acceptance as
submitted, including the data diskette containing the EXCEL spreadsheet
subsidence data files.