2010-04-01_REVISION - C1980007 ‎(2)‎

• 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
• Email Name: MLT
• 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 rCOLOPR-ADO

Phone: [phone] IVISION O F
ECLAMATION
FAX: [phone] MINING

INTEROFFICE MEMORANDUM SAFETY
Bill Ritter, Jr.
Governor
Date: 01 April 2010 Harris D. Sherman
Executive Director
To: Tom Kalderibach
Lead Specialist Ronald W. Cattany
, Division Director
Natural Resource Trustee
From: Marcia L. Talvitie, P.E.
Subject: West Elk Mine - Permit No. C-1980-007
TR 120 - Refuse Pile Expansion East Area
2°d Adequacy Review - Engineering and Geotechnical
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 IOC
(suggestion: as Figure 1-4).
MCC's response indicates that new Figure 14 (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 - LAP 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).
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