2009-11-05_REVISION - C1996083

• Permit No: C1996083
• IBM Index Class Name: REVISION
• Doc Date: 11/5/2009
• Doc Name: Cost Estimate & Bowie PAR Responses ‎(Memo)‎
• From: Jim Stark
• To: Joe Dudash
• Type & Sequence: TR64
• 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 Stark
SUBJECT: TR-64 Cost Estimate and Bowie PAR Responses
DATE: 5 November 2009
COLORADO
D I V1 S I ON OF
RECLAMATION
MINING
SAFETY
Bill Ritter, Jr.
Governor
Harris D. Sherman
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Trustee
Per your 6 October 2009 memo, I have completed a review of the information BRL
submitted in response to the Division's 14 September 2009 Preliminary Adequacy Letter
for Technical Revision 64. In my comments I have changed my question numbering to
match that in the Division's PAR letter.
10. Response accepted. BRL has addressed the topsoil deficiency for the gob
piles. They have updates Appendix A with topsoil and subsoil salvage and
replacement values.
11. Response accepted. BRL intends to change the amount of topsoil replaced
from 1.2 feet to 0.9 feet, as there is a topsoil deficiency. In order to achieve
the 4.0 feet of overall cover, BRL intends to replace 3.1 feet of subsoil (versus
2.8 feet). This is not a problem from a material balance standpoint, as there is
sufficient subsoil for the reclamation. The question here is whether or not
replacing 0.9 feet of subsoil (versus the 1.2 feet currently approved) is
acceptable. As I said, from a material balance and cost estimating standpoint
this is fine but we need to verify that it is acceptable from a revegetation
standpoint.
12. Response accepted. BRL has changed the acreage numbers as requested.
13. Response accepted. This is similar issue as in question 11 (although it dealt
with overall cover versus just the topsoil balance). BRL is stating that they
will change the topsoil replacement depth and subsoil replacement depth to
meet the required four feet of cover and to meet their material balance
requirements. The question of whether 0.9 feet of topsoil is acceptable still
remains.
Office of Office of
Mined Land Reclamation Denver • Grand Junction • Durango Active and Inactive Mines