APPCOR12507

• Permit No: C1981033
• IBM Index Class Name: Application Correspondence
• Doc Date: 12/29/1981
• Doc Name: REVIEW OF THE REVISED BEAR MINE PERMIT APPLICATION
• From: MLR
• To: DAN MATHEWS
• Media Type: D
• Archive: No

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DEPARTMENT OF NATURAL RESOURCES
D. Monte Pascoe. Executive Director
MINED LAND RECLAMATION
423 Centennial Building, 1313 Sherman Street
Denver, Colorado 60203 Tel. [phone]
David C. Shelton
Director
December 29, 1981
TO: Dan Mathews
FROM: Jim Pendleton
RE: Review of th evis Bear Mine Permit Application
Pursuant to your request, I have reviewed the recently revised Bear Mine
Permanent Program Permit Application, submitted by Bear Coal Company.
I have reviewed this revised application to determine whether the applicant
has responded to my concerns as expressed in my memo to you dated April 29,
1981. I fozviard the following comments for your consideration.
~\ Refuse Disposal (2.05.8 and 2.05,9)
The applicant has amended pages 6C and 67 of the application to state that
underground development waste is deposited in an area designated as "spoils
pile" on Figure 2.05.4(2)(b)-Z(c). The applicant proposes "to cover the
existing spoils area with 6 inches of topsoil."
You expressed concern in the Preliminary Adequacy Review letter regarding the
pile's susceptibility to erosion, if the North Fork of the Gunnison's channel
were to meander towards the pile. The applicant has not responded to your
concern.
The application should demonstrate that the refuse in question is actually
underground development waste. Further, the application should address the
underground development waste "spoils pile" in conformance with the requirements
of Section 2.05.3(6)(a)(ii), demonstrating that the pile's design conforms
with the standards of Rule 4.09. This has not yet been accomplished by the
applicant.
Backfilling and Grading (2.05.9(2)(c))
On amended page 70 of the amended application, the applicant addresses back-
filling and grading plans. In this discussion, the applicant refers to Volume
2 of the application, which is entitled "Slope Stability Analysis, West Portal
Area, Bear Mine" and was prepared by Rocky Mountain Geotechnical, Inc. However,
the report presents a selection of alternatives for backfilling and grading of
the portal area, two of which fulfill the requirements for slope stability within
Rule 4.19.2(1)(b). (See attached memo.) The preferred alternative presented
in that report is partial backfilling of the portal highwall, which would require
the approval of an appropriate request for variance from approximate original
contour, based upon steep slope mining conditions. In addition, this alternative