2011-10-11_REVISION - C1981012

• Permit No: C1981012
• IBM Index Class Name: REVISION
• Doc Date: 10/11/2011
• Doc Name: Letter & Application
• From: J.E. Stover & Associates, Inc
• To: DRMS
• Type & Sequence: MR99
• Email Name: DIH
• Media Type: D
• Archive: No

MINE ENGINEERING
MINE RECLAMATION
October 7, 2011
Dan Hernandez
Division of Reclamation, Mining and Safety
1313 Sherman St., Room 215
Denver, CO 80203
Re: New Elk Mine Permit C- 1981 -012
Minor Revision No. 99
Geotechnical Work for RDA #1 Expansion
Dear Mr. Hernandez:
J. E. STOVER & ASSOCIATES, INC.
2352 NORTH 7 STREET, UNIT B
GRAND JUNCTION, COLORADO 81501
PHONE: [phone], FAX [phone]
O
CY 441
CIVIL ENGINEERING
CONST. MANAGEMENT
On behalf of New Elk Coal Company, (NECC) enclosed is an application for a minor revision to
allow for some geotechnical work to be performed in the proposed RDA #1 expansion area.
Description of Revision
New Elk Coal Company anticipates that production will steadily increase over the next few
years. All of the raw coal produced will be cleaned in the coal preparation plant. Thus, coal mine
waste production will steadily increase. NECC intends to determine if the canyon immediately
east of the existing coal mine waste pile is a suitable area for a coal mine waste pile. A
geotechnical field investigation and laboratory testing are required to verify field subsurface
conditions and to obtain geotechnical data necessary for the design of the coal mine waste pile.
Field investigations will include three borings, and 6 test pits. A rubber -tired drill rig and rubber
tired backhoe will be used to advance the borings and excavate the test pits. A temporary light
use road from the existing highway will provide access to the site. The light use roads will be
constructed with a small track dozer. Light use roads will only be wide enough to achieve safe
access of the drill rig and backhoe. Test pits will be excavated with a rubber -tired backhoe to
depths of approximately 8 to 10 feet or to bedrock/refusal. The 6 inch diameter borings will be
drilled to depths of 50 to 70 feet. One boring will be converted to a 2" diameter monitoring well.
Silt fences or straw wattles will be used as necessary to prevent erosion during the site access and
field investigation program.
Disturbed and Affected Area
There will be one acre of disturbance associated with project. There is no change in affected area
since this area has been undermined.