_REVISION - M1980244 ‎(30)‎

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Name: Appendix E
• From: Cripple Creek & Victor Gold
• To: DMG
• Type & Sequence: AM8
• Media Type: D
• Archive: No

PART 3: EXECUTION

3.01 EXCAVATION:
A. The CONTRACTOR will be responsible for the safety of temporary construction slopes.
CONTRACTOR shall inspect all temporary and permanent open-cut excavations on a regular
basis for signs of instability. Should signs of instability be noted, CONTRACTOR shall
immediately undertake remedial measures and shall notify MANAGER immediately.
Permanent cut slopes shall be left in smooth, safe, and stable condition at the end of the workday.
B. CONTRACTOR shall conduct all excavation and shoring operations in compliance with
applicable Colorado State and Federal government laws and regulations.
3.02 FILL PLACEMENT:
A. Structural Fill
CONTRACTOR shall condition, place and compact Structural Fill by a method
compaction technique, as discussed in Section 2200.0.
Maximum rock size for rock fill shall be two-thuds of the compacted lift thickness,
unless otherwise approved by MANAGER, DESIGN ENGINEER and
CERTIFYING ENGINEER. CONTRACTOR shall remove oversize materials from
fills at no additional cost to CC&V.
B. Select Structural Fill
•
CONTRACTOR shall condition and compact the Select Structural Fill using a method
specification on 3 foot thick lifts that result in a firm surface that will be approved by
the CERTIFYING ENGINEER.
C. Coarse Shaft Backfill
1. Coarse Shaft Backfill shall be placed in [he underground workings as part of
remediation, as shown in the DRAWINGS.
2, CONTRACTOR shall compact and condition the final surface of the Coarse Shaft
Backfill using a method specification that results in a fum surface that will be approved
by CERTIFYING ENGINEER
3.03 NATIVE MATERIAL
For the remediation of shafts greater than 25 feet which aze currently backfilled with native material,
CONTRACTOR shall excavate the current native backfill to a depth of 25 feet below Soil Liner Fill
subgmde elevation. The surface of the native material at this elevation will then be compacted using a
method specification that results in a firm surface that will be approved by CERTLFYING ENGINEER.
CONTRACTOR shall then remediate the underground working using Coarse Shaft Backfill, Cement
Plug and Cemetend Rockfill as shown on the DRAWINGS.
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Section 022 i 0 Page 2 of 3
Underground Working Remediation Golder Associates
OiPHASEw PSSA CERIWPPENDIC~S~APPENDIX E rECFN'ICAL SPECffICAT[ONSM210RLDOC
March 22, 2000
Revision 1