Laserfiche WebLink
Cripple Creek & Victor Gold Mining Company <br />Cresson Project <br />Quality Assurance Monitoring and Test Results <br />Phase 4B/C Triangle Liner Certification <br />August 10, 2010 <br />4.1.1 Grain Size Distribution <br />AMEC completed the grain size distribution (gradation) of samples of SLF and DCF. The <br />results of gradation analyses are presented in Appendix F and summarized in Tables 4 and 5. <br />¦ AMEC performed 1 CQA gradation of SLF. The testing frequency (approximately one <br />test per 300 cubic yards) exceeded the minimum specified testing frequency of one test <br />per 5,000 cubic yards. The CQA gradations performed of SLF met project <br />specifications. The SLF CQA gradation results are presented in Appendix F and <br />summarized in Table 4. <br />¦ AMEC performed 2 CQA gradations of DCF. The testing frequency (approximately one <br />test per 225 cubic yards) exceeded the minimum specified testing frequency of one test <br />per 20,000 cubic yards. The DCF CQA gradations met project specifications, and the <br />results are presented in Appendix F and summarized in Table 5. <br />4.1.2 Moisture Content <br />AMEC measured oven moisture contents of SLF and DCF as part of the CQA program. <br />Moisture content data are presented in Appendix F. <br />4.1.3 Atterberg Limits <br />AMEC performed Atterberg limit testing of all fill materials. All fill materials, with the exception of <br />SLF were non-plastic. The SLF and DCF samples tested met project specifications for <br />Atterberg Limits. <br />The SLF Atterberg limits testing frequency (approximately one test per 300 cubic yards) <br />exceeded the minimum specified testing frequency of one test per 5,000 cubic yards. The <br />plasticity index of the CQA SLF sample met the project specification of plasticity index greater <br />than or equal to 10. Atterberg limit test results for SLF are presented in Appendix F and <br />summarized in Table 4. <br />4.1.4 Proctor Compaction Tests <br />AMEC performed standard Proctor compaction tests of SLF in order to compare in-place <br />densities and moisture contents with laboratory determined values of maximum dry density and <br />optimum moisture content. AMEC performed 1 CQA Standard Proctor compaction tests of SLF. <br />The testing frequency (approximately one test per 300 cubic yards) exceeded the minimum <br />specified testing frequency of one test per 5,000 cubic yards. The SLF compaction test results <br />are presented in Appendix F. CQC Proctor tests were not included in the Proctor testing <br />frequency. <br />S:\PROJECTS\1125E CCV CQA\H2 - DESIGN\TRIANGLE\FINAL\TRIANGLE CERTIFICATION REPORT FINAL REVI.D0C 10