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Newmont Mining Corporation M■ <br /> Record of Construction Report ■ <br /> VLF2 Recertification Project <br /> Subgrade and Geomembrane 9750'—9900'Elevations <br /> NewFields Project No.475.0106.026 <br /> August 17,2018 <br /> geomembrane installation activities. Geomembrane quality assurance observations and testing <br /> is discussed further in Section 5. <br /> 3.6. Anchor Trench <br /> The geomembrane was temporarily anchored on the benches at the 9850' and 9900' elevations <br /> in a minimum 2-foot-wide and 2-foot-deep anchor trench. Once non-destructive testing and <br /> repairs were completed and approved, the anchor trench was backfilled by Ames in accordance <br /> with the Technical Specifications. The backfill material was placed in 12-inch-thick lifts and <br /> compacted by a vibratory plate compactor, "Jumping Jack" compactor, or a smooth drum <br /> vibratory compactor. In areas where future geomembrane installation would cover the anchor <br /> trench, SLF was used to backfill the top 12 inches of the anchor trench. <br /> 4. GEOMEMBRANE QUALITY CONTROL SUBMITTALS <br /> The CQA Monitor reviewed and approved all geomembrane QC submittals, including <br /> geomembrane installation personnel resumes,geomembrane roll QC certificates,geomembrane <br /> resin QC certificates,and welding rod QC certificates.The CQA Monitor tracked all geomembrane <br /> delivered to site in the site inventory. The site inventory for all geomembrane used within the <br /> VLF2 Recertification area are presented in Appendix D.1. <br /> 4.1. Geomembrane Installation Personnel Resumes <br /> Comanco submitted the resumes of all installation personnel prior to construction or repair <br /> activities within the VLF2 Recertification Project. The CQA Monitor verified that the Installation <br /> Superintendent, Master Seamer and QC Inspector possessed the installation experience required <br /> by the Technical Specifications. Geomembrane installation personnel resumes for all crews that <br /> performed work on the VLF2 Recertification Project are presented in Appendix D.2. <br /> 4.2. Geomembrane Roll QC Certificates <br /> The geomembrane for the VLF2 Recertification project was manufactured by AGRU America. <br /> Manufacturing Roll QC certificates were submitted for every roll of geomembrane <br /> (approximately one every 9,000 square feet), exceeding the required minimum frequency of one <br /> per 50,000 square feet of geomembrane. The roll QC certificates were reviewed the CQA <br /> Monitor, ensuring all geomembrane materials met or exceeded the Technical Specifications.The <br /> roll QC certificates for all geomembrane used within the VLF2 Recertification area are presented <br /> in Appendix D.3. <br /> Page 7 <br />