2020-07-08_REVISION - M1980244 (20)

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Cripple Creek&Victor Gold Mining Company Squaw Gulch VLF Phase 2A Part 3 Record of Construction Report ■ 475.0106.032 July 2,2020 the 3/-inch sieve. Density was achieved by placing the material in accordance with the method compaction specifications presented in Appendix D. 3.2.2. Soil Liner Fill The Squaw Gulch VLF Phase 2A Part 3 area was constructed by placing 11,226 cy of SLF. The particle size distribution, Atterberg limits, laboratory compaction, and permeability testing frequencies were one sample for every 4,000 cy. A minimum of three SLF record samples were required to be tested for particle size distribution, Atterberg limits, laboratory compaction,and permeability testing.A total of three SLF record samples were tested with passing results. SLF laboratory testing is summarized in Table 6 and individual test results are presented in Appendix H.2. The nuclear density/moisture testing frequency for SLF is one test for every 500 cy. A minimum of twenty three SLF nuclear density/moisture tests were required. A total of twenty seven SLF nuclear density/moisture tests were performed with passing results. The depth check frequency for SLF is two checks for every acre. A minimum of seven SLF depth checks were required. A total of twenty seven SLF depth checks were performed with passing results. SLF nuclear density/moisture testing and SLF depth checks are presented in Tables 9 and 10, respectively. 3.2.3. Drain Cover Fill The Squaw Gulch VLF Phase 2A Part 3 area was constructed by placing 22,452 cy of DCF. The particle size distribution and Atterberg limits testing frequencies were one sample for every 20,000 cy. A minimum of two DCF samples were required to be tested for particle size and Atterberg limits.A total of five DCF samples were tested with passing results. DCF laboratory testing is summarized in Tables 7 and 8 and individual test results are presented in Appendix H.3 and Appendix H.4. 3.3. Geosynthetics Quality Control Submittals The CQA Monitor reviewed and approved all geosynthetic QC submittals, including geomembrane installation personnel resumes,geomembrane roll QC certificates,geomembrane resin QC certificates, and welding rod QC certificates.The CQA Monitor tracked all geomembrane delivered to site in the site inventory. The site inventory, for all geomembrane used within the Phase 2A Part 3 area, is presented in Appendix 1.1. 3.3.1. Geomembrane Installation Personnel Resumes Tetra Tech submitted the resumes of all installation personnel prior to construction or repair activities within the Squaw Gulch VLF Phase 2A Part 3 area. The CQA Monitor verified that the Installation Superintendent, Master Seamer and QC Inspector possessed P:\Projects\0106.032 VLF2 Phase 2 CQA\1-REPORTS\Cert Report-Phase 2A Part 3\475.0106.032 CCV PHASE 2A Part 3 ROC REPORT.docx Page 9