2014-02-07_REPORT - M1980244 (8)

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ameO PART 2: PRODUCTS 2.01 MATERIALS A. Fill materials will consist of Structural/Overburden Fill, Select Structural Fill, and Coarse Shaft Backfill identified in Section 2200.0, Cast-In-Place Concrete identified in Section 3300.0 and Cemented Rockfill identified in Section 3310.0. 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/Overburden Fill 1. CONTRACTOR shall condition, place and compact Structural/Overburden Fill by a method compaction technique,as discussed in Section 2200.0. Maximum rock size for rock fill shall be two-thirds 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 1. CONTRACTOR shall condition and compact the Select Structural Fill in accordance with project SPECIFICATIONS,Section 2200.0. C. Coarse Shaft Backfill 1. Coarse Shaft Backfill shall be placed in the 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 firm surface that will be approved by CERTIFYING ENGINEER. Section 02210 Page 2 of 3 May 9,2012 Underground Working Remediation Revision 1