2008-01-22_REVISION - C1981008

• Permit No: C1981008
• IBM Index Class Name: REVISION
• Doc Date: 1/22/2008
• Doc Name: Adequacy Issues
• From: Susan Burgmaier
• To: Mike Boulay
• Type & Sequence: RN5
• Media Type: D
• Archive: No

DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
STATE OF COLORADO
COLORADO
D I V I S I O N OF
RECLAMATION
MINING
SAFETY
Bill Ritter, Jr.
January 22, 2008 * Governor
Harris D. Sherman
To: Mike Boulay
• Executive Director
Ronald W. Cattany
/
?' Division Director
`
From: Susan Burgmaier J Natural Resource Trustee
Re: New Horizon Mine (C-81-008)
Permit Renewal No. 5 (RN-05)
Adequacy Issues
Per your request, following is a list of adequacy issues from previous permitting actions
that remain outstanding for the New Horizon Mine RN-05.
1. WFC has not applied for a Phase II bond release on any disturbed areas west of
2700 Road (as discussed in the TR-54 reclamation cost estimate correspondence),
so the reclamation cost estimate will again include costs for redistributing topsoil
on all disturbed areas not yet bond released.
2. WFC provided a fence diagram for Cut 88 (Map 3.02.2-3) showing reclamation of
the final pit at a worst case scenario. This diagram shows final contours of a 50'
deep, 500' wide channel, which would not be approximate original contour.
While this may be necessary for reclamation prior to completion of the life of
mine plan, DRMS is concerned that this would also be the case at any point from
Cut 88 to the end of the life of mine plan. Reclamation contours east of the
existing pit are up to 25' higher in elevation than premining contours, suggesting
that this may have contributed to the apparent deficit of material that now exists.
WFC needs to review the currently approved post-mining contours for the site and
determine if those contours can realistically be achieved.
3. WFC states that all structures on site will be retained permanently, asserting that
WFC is the landowner of the land upon which the structures reside, and that WFC
desires their permanent retention. WFC must also provide a complete list of all
structures on site (as required by Rule 2.05.3(3)), a narrative detailing continued
compliance with Rule 4.04, and a description of the compatibility of each
structure with the approved postmining land use, as required by Rule 2.05.5(1).
4. Revegetation and postmining land use sections of the permit are still under DRMS
review. One proposed change that could possibly affect the reclamation cost
estimate relates to irrigation of dryland pasture for initial establishment.
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines