2009-04-01_GENERAL DOCUMENTS - C1980005 ‎(2)‎

• Permit No: C1980005
• IBM Index Class Name: General Documents
• Doc Date: 4/1/2009
• Doc Name: Proposed Decision & Findingsof Compliance for SL3 ‎(Old)‎
• Permit Index Doc Type: Findings
• Email Name: DTM
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 275 RA D O
t
Denver, Colorado 80203 1 o N O F

Phone: [phone] R;ECLAMATION
FAX: [phone]

SAFETY
March 31, 2009 Bill Ritter, Jr.
Governor
Harris D. Sherman
Re: Seneca 11 Mine (C-1980-005) Executive Director
SL03 Phase 11 Bond Release Request BRB2 and BRB3 Ronald W. Cattany
Division Director
Reclamation Cost Estimate Summary Natural Resource Trustee
The Division has completed a revised cost estimate for remaining reclamation liability following
the proposed Phase II Bond Release SL-3 at the Seneca II Mine. The new estimated cost for
reclamation of the interim and permanent program areas is $4,050,665.00. Estimated costs for
the pre-law areas remain unchanged at $285,484.00, so the total required performance bond for
the site will now be $4,336,149.00. The required liability will be reduced by $1,975,695.00. The
full cost estimate is available in the DRMS files.
Aside from the obvious reduction owing to our Phase II release proposal, there are other
changes in the estimated reclamation costs, mainly due to rising labor, equipment, and
materials costs. A brief summary of those changes follows.
Worksheet 00b: The total cost of reclaiming the remaining Wadge area access road rose
slightly because of higher equipment operating costs.
Worksheet 00c: As noted by SCC, the majority of the cost for these tasks is sealing of the wells.
Two years ago we did some research on well sealing costs which resulted in a reduction in our
estimated costs for well sealing, thus the total amount for this worksheet is reduced
considerably. Costs for reclaiming the ditches and truck wash ponds increased slightly due to
higher equipment operating costs.
Worksheet 00d: The total cost of reclaiming the landfill area rose slightly because of higher
equipment operating costs.
Worksheet 00e: The total cost of constructing postmine drainages rose slightly because of
higher equipment and materials costs.
Worksheet 00f: The total cost of facilities area reclamation increased significantly due to higher
equipment operating and labor costs, particularly for demolition of buildings.
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines