2010-04-01_REVISION - C1980007

• Permit No: C1980007
• IBM Index Class Name: Revision
• Doc Date: 4/1/2010
• Doc Name: 2nd Adequacy Review ‎(Memo)‎
• From: Marcia Talvitie
• To: Tom Kaldenbach
• Type & Sequence: TR120
• Email Name: TAK
• 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
Date: 01 April 2010
To: Tom Kaldenbach, Lead Specialist
From: Marcia L. Talvitie, P.E. op
Subject: West Elk Mine — Permit No. C- 1980 -007
TR 120 — Refuse Pile Expansion East Area
2 " Adequacy Review — Engineering and Geotechnical
COLORADO
D IV IS 3 ON OF
RECLAMATION
MINING
SAFETY
Bill Ritter, Jr.
Governor
Harris D. Sherman
Executive Director
Ronald W. Cattany
Division Director
Natural Resource Trustee
As requested, I have reviewed MCC's 23 March 2010 response to the Division's 11 March
Preliminary Adequacy Review for TR -120, with an emphasis on the engineering and
geotechnical aspects. The geotechnical comments I initially provided for your use were
numbered 1 thru 7. The numbering in this memo has been revised to correspond with that used
in the comprehensive PAR letter.
16. DRMS 10 -Mar a) In their March 9th response, MCC provided "Figure 1 — LRP Soil
Boring Locations ". Please incorporate this map into the Figures of Volume 10C
(suggestion: as Figure 1 -4).
MCC's response indicates that new Figure 1 -4 (a.k.a. the 9 March Attachment IA-
Figure 1) has been added to the Permit Application. However, the re- numbered
figure was not included in the 23 March electronic submittal package.
Please ensure that Figure 1 -4 — LRP Soil Boring Locations has been or will be
provided to the Division.
DRMS 10 -Mar b) Boring Logs, SPT values and laboratory results for the LRP
investigation have been provided. Please incorporate the boring logs into Volume IOC —
Appendix A. Laboratory test results for the LRP were previously intermingled in
Appendix B with results from the RPE East investigation. Please organize the
information presented in Appendix B to make it easier to differentiate between the
various investigations.
MCC's response indicates that boring logs for the LRP geotechnical investigation
have been added to Appendix A and that Appendix B has been reorganized as
requested. (The boring logs were previously provided as Appendix Bl to the 9
March submittal, and laboratory results as Appendix Cl).
Office of Office of
Mined land Reclamation Denver - Grand Junction - Durango Active and Inactive Mines