PERMFILE60955

• Permit No: C1981038A
• IBM Index Class Name: Permit File
• Doc Date: 4/9/2004
• Doc Name: page 1 to 55
• Section_Exhibit Name: 2.05 Operation and Reclamation Plans
• Media Type: D
• Archive: Yes

2.05 APPLICATION FOR PERMIT FOR SURFACE OR UNDERGROUND MINING ACTIVITIES -
MINIMUM REQUIREMENTS FOR OPERATION AND RECLAMATION PLANS.
The sediment volume and 10-yr, 24-hr. inflow is calculated in
Ponds, Impoundments and Dams Appendix. The sediment volume is
0.16 ac-ft. and the 10-yr, 29-hr inflow is 0.19 ac-ft. The
total volume required is 0.16 + 0.19 = 0.35 ac-ft.
The runoff/sedimentation storage areas will be de-watered with
pump. The de-watering will be after a runoff detention time of
24 hours, and will be done in such a manner as to minimize
disturbance to the surrounding areas.
The pond is currently being inspected following the Sedi-
mentation Pond-Sediment Monitoring Program. See Ponds,
Impoundments and Dams Appendix in Volume BA.
The pond will be removed following usage. It will be adequately
backfilled and rip-rapped. Currently plans are to remove the
dam, backfill the pond, and restore natural drainage.
Waste Disposal Area
A small waste disposal area for the West Mine was located on
public lands in the SW'nSE'a, Section 29, T.13.5., R.92.W., 6th
P.M. Development began in September, 1976, and continued until
it was filled to capacity and reclaimed during August, 1983. In
the Spring of 1985, spontaneous combustion in the waste rock
fill was detected. Surficial cracks were tamped closed to cut
off contacts with oxygen. As this method proved unsuccessful in
controlling the combustion, the hot material was excavated,
cooled and transported to the West Ridge disposal site.
Excavated materials were also utilized by the Western Slope
Carbon wash Plant facility.
The area was designed and constructed to meet the requirements
of 4.09.1 and 9.09.2, and 9.10.2 through 4.11.3, and so as not
to adversely affect water quality, water flow or vegetation. It
will not create a public health hazard, nor cause instability
within the permit area. The specific information for design and
construction of the waste disposal area is contained in the
Waste Disposal Appendix in Volume 6A. Also included are a
stability analysis, foundation analysis, and sizing, design and
drainage requirement calculations.
Phase III of the stability analysis and the design of the new
waste disposal area was completed by Geo-Hydro Consulting, Inc.
and approved by the Division on May 9, 1983 ( see Maps 6A-lA
thru 1H in Volume 6A). The initial Construction of the West
Ridge disposal facilities, located west of the reclaimed waste
disposal area, took place during July and August, 1983. Due to
surface landowner constraints, construction of the West Ridge
disposal area in 1983 was confined within the west boundary of
the Temporary Land Use Permit No. CO-030-TU-78-6. A
modification of this permit, granted by the BLM on June 11,
1989, allowed the expansion of the West Ridge disposal area.
Construction of the West Ridge waste pile expansion took place
during June and July, 1984.
Permit Renewal
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