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Newmont-Cripple Creek&Victor Gold Mine <br /> Technical Specification No.02210.DOCX ■ <br /> Squaw Gulch VLF <br /> Project No.475.0106.006 <br /> June 15,2016 <br /> 2. PART 2: PRODUCTS <br /> 2.1. Materials <br /> A. Fill materials will consist of Structural Fill, Select Structural Fill, and Coarse Shaft Backfill <br /> identified in Section 2200.0, Cast-In-Place Concrete identified in Section 3300.0 and <br /> Cemented Rockfill identified in Section 3310.0. <br /> 3. PART 3: EXECUTION <br /> 3.1. Excavation <br /> A. 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 immediately. <br /> Permanent cut slopes shall be left in smooth, safe, and stable condition at the end of the <br /> workday. <br /> B. CONTRACTOR shall conduct all excavation and shoring operations in compliance with <br /> applicableColorado State and Federal government laws and regulations. <br /> 3.2. Fill Placement <br /> A. Structural Fill <br /> 1. CONTRACTOR shall condition, place and compact Structural Fill by a method <br /> compaction technique, as discussed in Section 2200.0. <br /> Maximum rock size for rock fill shall be two-thirds of the compacted lift thickness, <br /> unless otherwise approved by MANAGER, DESIGN ENGINEER, and CERTIFYING <br /> ENGINEER. CONTRACTOR shall remove oversize materials from fills at no additional <br /> cost to CC&V. <br /> B. Select Structural Fill <br /> 2. CONTRACTOR shall condition and compact the Select Structural Fill using a method <br /> specification on 3-foot thick lifts that result in a firm surface that will be approved <br /> by the CERTIFYING ENGINEER. <br /> C. Coarse Shaft Backfill <br /> 1. Coarse Shaft Backfill shall be placed in the underground workings as part of <br /> remediation,as shown in the DRAWINGS. <br /> 2. CONTRACTOR shall compact and condition the final surface of the Coarse Shaft <br /> Backfill using a method specification that results in a firm surface that will be <br /> approved by CERTIFYING ENGINEER. <br /> Page 2 <br />