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2016-12-19_REVISION - M1980244 (2)
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2016-12-19_REVISION - M1980244 (2)
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Entry Properties
Last modified
12/22/2016 11:28:00 AM
Creation date
12/22/2016 11:12:37 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Revision
Doc Date
12/19/2016
Doc Name
Responses to DRMS ECOSA Stability Review Comments
From
Newmont / CC&V
To
DRMS
Type & Sequence
AM11
Email Name
TC1
AME
ERR
Media Type
D
Archive
No
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Technical Memorandum <br />Newmont CC&V Gold Mine <br />East Cresson Overburden Storage Area Stability Review/Update <br />NewFields Job No. 475.0106.005 <br />9 December 2016 <br /> <br /> <br />Page 6 <br />Table 2.2 <br />Calculated Factors of Safety <br />Failure Section Failure <br />Mode Static <br />Pseudo‐Static <br />(Operational <br />Conditions) <br />Pseudo‐Static <br />(Closure <br />Conditions) <br />Section 1 Global 1.9 1.6 1.4 <br />Section 2 Global 2.0 1.6 1.4 <br />Section 3 Global 1.5 1.4 1.2 <br />Section 4 Global 2.3 2.1 1.9 <br /> <br />4.0 SUMMARY <br />Newmont’s CC&V mine plans to increase the storage capacity of the ECOSA by raising the <br />permitted crest elevation from 10,565 to 10,960‐feet amsl. NewFields completed a stability <br />analysis for static and pseudostatic conditions to evaluate the stability of the revised <br />configuration for global failures under operational and closure conditions. Based on the results <br />of the stability evaluation, the larger ECOSA will remain stable under both static and dynamic <br />conditions. <br />If you have any questions or require additional information, please contact the undersigned. <br />Sincerely, <br /> <br />NewFields Mining Design & Technical Services <br /> <br /> <br /> <br /> <br /> <br />Nicholas T. Rocco, Ph.D., P.E. Jay Janney‐Moore, P.E. <br />Project Manager Project Manager <br /> <br />NTR/JNM/ntr <br /> <br />Attachments: Figure 1‐5; Attachment A <br /> <br />Addressee: (via e‐mail) <br /> <br />P:\Projects\0106.005 CCV Slope Stability & Water Balance\J‐REPORTS\TM_ECOSA_Stability_Rev3.docx <br />
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