2009-06-01_REVISION - C1996083 ‎(3)‎

• Permit No: C1996083
• IBM Index Class Name: REVISION
• Doc Date: 6/1/2009
• Doc Name: Cost Estimate ‎(Memo)‎
• From: Jim Stark
• To: Joe Dudash
• Type & Sequence: MR106
• Email Name: JJD
• Media Type: D
• Archive: No

STATE OF COLORADO
DIVISION OF RECLAMATION, MINING AND SAFETY
Department of Natural Resources
1313 Sherman St., Room 215
Denver, Colorado 80203
Phone: [phone]
FAX: [phone]
INTEROFFICE
MEMORANDUM
TO: Joe Dudash
FROM: Jim Star
SUBJECT: Bowie No. 2 Mine's MR-106 Cost Estimate
DATE: 1 June 2009
COLORADO
DIVISION OF
RECLAMATION
MINING
SAFETY
Bill Ritter, Jr.
Governor
Harris D. Sherman
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Trustee
Attached is the reclamation cost estimate for the Bowie No. 2 Mine's Minor Revision
106 - four gob vent boreholes and an additional road spur. The estimate is five tasks (a
summary sheet and tasks 341-344) and represents an increase in liability of $34,971.00.
This estimate is $7,214.00 more than the estimate provided by BRL.
The Division's estimate is more than the estimate provided by BRL for several reasons.
First, the Division assumed that sealing each borehole (1,637 foot average depth) would
require 12 hours of drill rig time versus the 8 hours per hole estimated by BRL. Second,
the hourly cost for the drill rig was more in the Division's estimate ($191.60/hour vs.
$162.70/hour). Third, the Division's costs to regarded and replace topsoil to the light-use
road spur to drill pad 177 was more expensive due to higher Division equipment costs
($207.53/hour vs. $90.00/hour).
There was no change to the estimate for changing the location of drill pad 177. None of
the dimensions or slopes of the drill pad have changed, only its location.
Please let me know if you have any questions or need any additional information.
cc: Sandy Brown w/out attachments
Office of Office of
Mined Land Reclamation Denver 9 Grand Junction 9 Duraneo Artivw and InartivP MinPC