REV03379

• Permit No: C1981033
• IBM Index Class Name: Revision
• Doc Date: 9/23/1982
• Doc Name: APPROVE WITH CONDITIONS
• From: MLR
• To: BEAR COAL CO
• Type & Sequence: MR1
• Media Type: D
• Archive: No

t
STATE OF COLORADO
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RiC HAgD D. L4MM. Govern n.
DEPARTMENT OF NATURAL RESOURCES
D. Monte Pascoe, Executive Director
MINED LAND RECLAMATION
423 Centennial Building, t313Sherman Street
Denver, Colorado 80203 Tel. [phone]
September 22, 1982
T0: Dan Mathews
FROM: Jim Pendleton
RE: Bear No. 2 C Z - Minor Revision Request
David C. Shelton
Director
Bear Coal Company has submitted a request for minor revision to its existing
reclamation plan for the backfilling of the portal cut at the Bear No. 2
Mine. As described in my memo to you of September 14, 1982, I met with
company representatives to discuss this proposal in your absence Iasi week.
sear Coal Company proposes to backfill the portal face-up area with under-
ground development waste from the neighboring Mt. Gunnison No. 1 Mine. This
material will be placed at a maximum facial slope angle of 2:1 (horizontal
to vertical slope). The toe of the backfilled material will maintain a
setback of at least 12 feet from the crest of the existing portal bench.
One foot of soil cover will be placed over all backfilled waste prior to
final revegetation of the site.
In considering this proposal, I have reviewed the prior stability analyses
and the material testing results submitted by the appropriate operators for
the Bear No. 2 portal and for the Mt. Gunnison preliminary waste pile. The
material strength characteristics of the Mt. Gunnison No. 1 underground
development waste and that of the originally anticipated Bear No. 2 backfill
material are not significantly variant. For this reason, the proposed
revision should not constitute a significant change and i recommend its
approval.
In conferring the approval of this minor revision for the Bear No. 2 Mine,
I recommend that you remind Bear Coal Company that conformance with the
applicable stipulations of their original permit No. C-o33-81 will continue
to be strictly enforced. Stipulations No. 8, No, 9 and No. IO specifically
deal with this topic. These stipulations require compaction testing of
backfill underground development waste material prior to commencement of
its placement. Further, these stipulations require engineering supervision,
inspection and certification of the placement and compaction and final grading
of the backfilled material. Following completion of the backfilling, the
operator is responsible for the installation and monitoring of slope stability
rranuments.
/mt
Attachment
cc: Brian Munson