APPCOR13267

• Permit No: C1984065
• IBM Index Class Name: Application Correspondence
• Doc Date: 12/18/1984
• Doc Name: 3RD ROUND OF SUPPLEMENTAL RESPONSES
• From: JIM PENDLETON
• To: JIM HERRON
• Media Type: D
• Archive: No

• • III IIIIIIIIIIIII III
999
DEPARTMENT OF NATURAL RESOURCES
David H. Getches, Executive Director
MINED LAND RECLAMATION DIVISION
DAVID C. SHELTON, Director
Richartl D. Lamm
Governor
MEMORANDUM
18 December 1984
T0: Jim Herron ~/LV~'"`~
FROM: Jim Pendleton
RE: Storm King Mining hird Round of Supplemental Responses -
Coal Ridge 1 Permit Application No. C-84-065
~-
Pursuant to your request, I have reviewed the geotechnical aspects of Storm
King Mining's third supplemental submittal. I now believe that the
application is approvable. However, the findings document will have to
contain a number of geotechnical stipulations (Subsidence, etc.) and a
reiteration of numerous commitments (Blasting, etc.). Great difficulty will
be encountered in discriminating between what, exactly, we are and are not
approving. The way the amended application now reads, I assume we would be
granting a partial approval. Therefore, we would have to carefully report the
events leading to the approval of a temporary coal processing waste pile and
specify that we are not approving the permanent waste pile.
Temporary Coal Processing Waste Storage:
The applicant has amended pages 4-15d and 4-15e to describe the temporary
stockpile storage of coal processing waste in the stockpile area adjoining the
raw coal stockpile. The applicant projects 2% waste, based upon analysis of
the resource drilling performed on the coal seam to be mined. A total of
600,000 tons of coal will be produced during Phase A, resulting in a projected
12,000 tons of coal processing waste. The applicant proposes to store the
coal processing waste in a temporary stockpile to measure 380 feet long by 115
feet wide by 12 feet high. Side slopes will not exceed a gradient of 3:1
(horizontal to vertical slope). The stockpiles location is depicted on Figure
4.2-7A.
The regulations do not directly speak to storage of coal processing waste.
However, the scheme proposed does not appear to offend the regulations of Rule
4.10. All stored waste would be properly sediment controlled, etc. If we
approve this proposal we will have to stipulate completion of an approvable
"detailed engineering plan" for the permanent waste embankment within a set
time span, such as one year from permit issuance. Further we should clearly
state that if 12,000 tons of waste is produced prior to obtaining approval of
the permanent waste embankment, mining operations would be required to cease.
Escapeways & Ventilation Raises:
The applicant has amended page 4-26a to include a commitment to submit designs
and acquire design approval, before constructing either of the two future
escapeways or ventilation raises depicted on amended Figure 4.2-4.
423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. [phone]