Laserfiche WebLink
Cripple Creek & Victor Gold Mining Company <br />Cresson Project <br />Quality Assurance Monitoring.and Test Results <br />Liner Recertification <br />December 17, 2009 <br />ameO <br />The laboratory test results are summarized in Tables 4 and 5 presented in Appendix G. <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 G and summarized in Tables 4 and 5. <br />AMEC performed 1 CQA gradation of SLF for the Phase IVa ramp area. The testing <br />frequency (approximately one test per 300 cubic yards) exceeded the minimum specified <br />testing frequency of one test per 5,000 cubic yards. The CQA gradations performed of <br />SLF met project specifications. The SLF CQA gradation results are presented in <br />Appendix G and summarized in Table 4. <br />AMEC performed 2 CQA gradations of DCF for the Phase IVa ramp and Phase IVc LOB <br />areas. The testing frequency (approximately one test per 410 cubic yards) exceeded the <br />minimum specified testing frequency of one test - per 20,000 cubic yards. The DCF CQA <br />gradations met project specifications, and the results are presented in Appendix G and <br />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 G. <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 G 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 />0 <br />S: \PROJECTS \1125E CCV CQA \H2 - DESIGN\LINER RECERTIFICATION REPORT\REPORT BODY\QA MONTIORING AND TEST RESULTS LINER t 0 <br />RECERTIFICATION.DOC <br />