GENERAL53077

• Permit No: C1981041
• IBM Index Class Name: General Documents
• Doc Date: 12/1/1982
• Doc Name: Proposed Decision and Findings of Compliance
• Permit Index Doc Type: FINDINGS
• Media Type: D
• Archive: No

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XIV. Operations Description (cont'd)
Room and pillar panels will be typically developed using a five-entry system. Rooms
will be driven from these submains a distance of approximately 440 feet from the
centerline of the submains. The entries are 18 to 20 feet wide. Pillars will be
developed on I00 by 100 foot centers for all mains and 60 by 100 foot centers for
all submains.
Longwall panels will be 510 feet wide and vary in length from 4,400 feet to 5,700
feet. Barrier pillars of approximately 200 feet in width will be used for longwall
panels. A two-entry system will typically be used for the longwall panels.
Accrording to current plans, a total of 1,817 acres will be affected through the year
1995. The area presently disturbed by surface facilities is 272 acres. There are
no plans to disturb any further acreage.
All coal to be mined will be recovered from the Cameo "B" seam. The stratum that
will be affected by underground mining consists primarily of undifferentiated shales
and sandstones of the Mesaverde Group.
The proposed operation is in compliance with the requirements of this section.
XV. Explosives (2.05.3(6))
No surface blasting is planned to occur at this operation. Therefore, the proposed
operation is in compliance with this section.
XVI. Coal Processing Waste and Non-Coal Processing Waste (2.05.3(8), 2.05.4(2)
(f), 4.10, 4.11)
There is no non-coal processing waste produced at .the mines. However, coal
processing waste is generated at this mine. Information on coal processing waste
and coat processing waste embankments can be found in Section 2.05.3 of volume I
and Appendix T of Volume VI of the application.
Raw coal mined at the Roadside and Cameo mines is segregated at the preparation plant,
Located near the Roadside mine, with clean coal being conveyed to a loadout facility.
The reject material is transported by truck to the disposal site.
Coal processing waste is currently being disposed of at a site located about one-half
mile east of the Cameo mine. Prior to January, 2981, coal processing waste was
disposed of at a disposal area near the Roadside mine. This area is no longer used
for coal processing waste disposal.
Geotechnical analyses in Appendix T of Volume VI of the application show that both
the Roadside and Cameo piles are stable at a minimum safety factor of 1.5. As
previously stated, the Roadside pile is no longer used, and will be reclaimed dur-ing
this five-year permit term. The Cameo pile is to have side slopes of 2.3:I with a
crest elevation of 5,025 feet. This configuration will result in a static safety
factor of 1.74, and a pile capacity of 2,290,000 cubic yards.
The Division finds this pile to be in compliance with a1Z applicable standards_ _.
The pit will monitored throughout construction. Monitoring iwi11 include: 1)
Pi ezometric monitoring of the coal processing waste embankment to assess the accuracy
of the assumptions used in the design analysis; 2) Monitoring of side slopes to
maintain a maximum slope angle of 2.3:1; 3) Monitoring compaction to attain a
minimum dry density of 80 pcf and; 4) Quarterly inspection for stability