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2016-08-31_REVISION - M1980244 (3)
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2016-08-31_REVISION - M1980244 (3)
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Last modified
10/25/2016 3:51:10 PM
Creation date
10/25/2016 1:35:15 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Revision
Doc Date
8/31/2016
Doc Name
Specifications - Adequacy Review Response
From
CC&V
To
DRMS
Type & Sequence
TR78
Email Name
TC1
ERR
AME
WHE
Media Type
D
Archive
No
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Newmont‐Cripple Creek & Victor Gold Mine <br />Technical Specification No. 02200.DOCX <br />Squaw Gulch VLF <br />Project No.475.0106.006 <br />June 15, 2016 <br /> <br /> <br /> <br />Page 8 <br />E. The CONTRACTOR will be responsible for the safety of temporary construction slopes. <br />CONTRACTOR shall inspect all temporary and permanent open‐cut excavations on a <br />regular basis for signs of instability. Should signs of instability be noted, CONTRACTOR <br />shall immediately undertake remedial measures and shall notify MANAGER <br />immediately. Permanent cut slopes shall be left in smooth, safe, and stable condition at <br />the end of the workday. <br />F. CONTRACTOR shall final grade excavations within the valley leach facility to establish <br />positive drainage to the Pregnant Solution Storage Area. In no case will depressions or <br />bowls be permitted in the valley leach facility area. <br />G. CONTRACTOR shall conduct all excavation and shoring operations in compliance with <br />applicable MSHA, Colorado State and Federal government laws and regulations. <br />3.5. Subgrade <br />A. The MANAGER and CERTIFYING ENGINEER will inspect and approve the exposed <br />subgrade prior to any fill or Soil Liner being placed. CQA Monitor will confirm that the <br />surface of the subgrade is smooth and free of debris, grade stakes, angular rocks, roots, <br />branches, vegetation, mud, ice, or frozen material. If the subgrade is determined to be <br />frozen, using the criteria identified in Item 3.06.10 of Section 2200, the CONTRACTOR <br />may either remove and replace the frozen subgrade or wait until subsequent <br />temperature monitoring indicates the fill is unfrozen, at no cost to CC&V. The subgrade <br />shall have no sudden sharp or abrupt changes in grade. <br />B. CONTRACTOR is responsible for maintaining subgrades in a condition satisfactory to <br />CERTIFYING ENGINEER. CONTRACTOR shall protect prepared subgrades, including <br />previously approved subgrade, from weather, construction equipment, or other factors <br />as outlined in Part 3.06 of the SPECIFICATIONS. Subgrade surfaces, including previously <br />approved subgrade, that become softened or otherwise unsuitable for placement of <br />fill, shall be repaired to CERTIFYING ENGINEER’s and MANAGER's satisfaction, at no <br />cost to CC&V. <br />C. Prior to placement of fill materials, CONTRACTOR shall scarify all in‐situ materials to a <br />depth of 6‐inches, moisture condition, and recompact the subgrade. Compactive effort <br />shall be adequate to obtain a minimum of 95 percent of maximum dry density as <br />determined by the standard Proctor test (ASTM D698) for the particular fill material. <br />Moisture conditioning shall be adequate to achieve a uniform moisture and density. In <br />rock areas, the CONTRACTOR shall prepare the subgrade by removing loose rock <br />fragments until competent foundation material is encountered as approved by <br />CERTIFYING ENGINEER. <br />D. If the underlying material is unsuitable to permit proper compaction of the subgrade, <br />CONTRACTOR shall loosen, aerate (or excavate and remove), and recompact the <br />subgrade until the top layer can be compacted as required. The recompacted surface
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