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2016-07-13_REVISION - M1980244
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2016-07-13_REVISION - M1980244
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Entry Properties
Last modified
11/20/2020 5:19:11 PM
Creation date
7/14/2016 7:18:51 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Revision
Doc Date
7/13/2016
Doc Name
Adequacy Review
From
DRMS
To
CC&V
Type & Sequence
AM11
Email Name
TC1
WHE
ERR
AME
Media Type
D
Archive
No
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Mr. Jack Henris <br />July 13, 2016 <br />Page 9 <br />m:\min\tc1\_teller\m-1980-244 cc-v\am-11\m-80-244-am-11maincommentr12016-07-13.docx <br />1.5 (for low confidence strength parameters, i.e., “coefficient of variation for rockmass <br />strength estimation may be 25 to 35 percent”). Please provide: <br />a. Analyses showing adequate FOS (per DRMS Table 1 above) exists to the edge of <br />Right-of-Way for Teller Co Rd 82, <br />b. Analyses of additional cross sections for the Co Rd (perpendicular to Section WH- <br />3 and GH-4) and SGVLF (south of Section SI-2). <br />c. Justification for claiming high confidence in strength parameters if using an FOS = <br />1.3. <br />35. Appendix 5 Section 6.3.5, Figures 6-1 and 6-18. Based on Figure 6-1, it appears Section <br />GH-4 (northeast side of the Globe Hill mine) may include a portion of Teller Co Rd 82. <br />The Division considers this road a critical structure and requires the road be shown on <br />Figures 6-1 (in plan view) and 6-18 (in section). Section 6.3.5 references Figures 6-16 and <br />6-17 for the GH-4 geology. The reference to Figure 6-16 is incorrect as that is for GH-3. <br />This Section 6.3.5 narrative is unclear as to whether it is potentially stable with an FOS = <br />1.52 (line one of 2nd paragraph), unstable with an FOS = 0.96 (line two of 2nd paragraph) or <br />whether it is advocating lowering the interramp slope angel to 39 degrees to achieve an FOS <br />= 1.20 (last line of 2nd paragraph). Please provide the following: <br />a. Assurance that the appropriate FOS at the edge of the Co Rd Right-of-Way is <br />achievable (reference DRMS Table 1 above), <br />b. Show Teller Co Rd 82 on Figures 6-1, 6-17 and 6-18, <br />c. Clarification on the different FOS’s in the second paragraph. <br />36. Appendix 5 Section 6.3.9, Figures 6-1 and 6-26. Based on Figure 6-1, it appears Section <br />WH-1 (south side of the WHEX mine) extends to the ECOSA. The Division considers <br />ECOSA a critical structure and requires the facility be shown on Figure 6-1 (in plan view) <br />and labeled in Figure 6-30 (in section). Section 6.3.9 references Figures 6-24 and 6-25 for <br />the WH-1 geology. The reference to Figure 6-24 is incorrect as that is for SI-2. Please <br />provide the following: <br />a. Assurance that the appropriate FOS at least 50 feet from the toe of the ECOSA is <br />achievable (reference DRMS Table 1 above), <br />b. Show/label the ECOSA on Figures 6-1, 6-25 and 6-26, <br />37. Appendix 5 Section 6.3.11, Figures 6-1 and 6-18. Based on Figure 6-1, it appears Section <br />WH-3 (northeast side of the WHEX mine) may include a portion of Teller Co Rd 82. The <br />Division considers this road a critical structure and requires the road be shown on Figures <br />6-1 (in plan view) and 6-30 (in section). Section 6.3.11 references Figures 6-28 and 6-29
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