REP42881

• Permit No: C1981018
• IBM Index Class Name: Report
• Doc Date: 8/18/1992
• Doc Name: DESERADO MINE RESPONSE TO STIPULATION 49 PR 03 PN C-81-018
• From: MLRD
• To: JANET BINNS
• Permit Index Doc Type: SUBSIDENCE REPORT
• Media Type: D
• Archive: No

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STATE OF COLORADO
MINED LAND RECLAMATION DIVISION
Department of Natural Resources
1313 Sherman SI.. Room 215
Denver, CO 80203
303 866-3567
Fax. [phone]
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Roy Ramer,
Governor
Date: August 18, 1992 Micnaei R. Long,
Drvlsion Drtector
TO: Janet Binns ~-
FROM: Jim Pendleton _, ~ - -
RE: Deserado Mine, Response to Stipulation No. 49, PR-03
_~ (Permit C-81-018)
I have completed a review of the Western Fuels-Utah (WFU) submittal
which you forwarded to my attention. This supplemental submittal
was completed in accordance with the requirements of Stipulation
#49. This stipulation required the submission of additional
technical information regarding the projected impacts of subsidence
due to mining within the new Lease COC-51551.
The operator's manager of engineering, Mr. Murari Shrestha, has
amended the original permit subsidence section to reflect the
corrected panel references in the existing lease area, as well as
the additional panels in the new lease area (see Table III-1).
Pillar safety factors have been recalculated and correctly entered
in Table III-4. The subsidence section of the permit has also been
amended to discuss the archeological sites identified during the
pre-mining survey.
The mine plan projects the undermining and subsequent subsidence of
County Route 65, an electric power transmission line, and the
identified archeological sites. Experience at the site has
determined that the expected subsidence will not negatively impact
the archeological sites. The operator has previously received
approval to conduct visual inspections of the road and the
transmission line to determine subsidence impacts. In the event
that any damage is discerned, the operator is committed to
effecting prompt repairs. The operator also commits to the
erection of appropriate warning signs on County Route 65, and the
conduct of daily. inspections.
The information submitted satisfies our earlier concerns regarding
the adequacy of the subsidence portion of the permit revision
application. This approved subsidence control and remedy plan
relies upon warning signs, effective daily inspection, and prompt
repair of any subsidence damage to adequately protect the public
health and safety, and the environment. Therefore, I recommend
that you reiterate this concern to the operator in your approval
letter. Further, I encourage you to follow up during your next