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• <br />• <br /> <br />Cripple Creek & Victor Gold Mining Company <br />Cresson Project <br />Quality Assurance Monitoring and Test Results <br />Load Out Bin Relocation <br />July 7, 2009 <br />amecs <br />one test per 207 cubic yards exceeded the minimum specified testing frequency of one test per <br />500 cubic yards. Nuclear density tests performed for the LOB SLF are summarized in Table 8. <br />Holes made in the SLF during testing were filled by tamping fine SLF material into the holes. <br />4.2.4.3 Depth Verification <br />Ames drilled a total of 2 holes in the compacted SLF to verify that the minimum 12-inch <br />compacted depth had been achieved. AMEC monitored the SLF depth verification tests and <br />documented results. Depth verification holes were filled with bentonite chips and water. Both of <br />the holes drilled into the SLF had compacted depths of 12 inches. The testing frequency met the <br />minimum specified testing frequency of two measurements per acre. The Soil Liner depth <br />verification results are presented in Table 9. <br />4.2.5 Drain Cover Fill <br />AMEC provided visual monitoring of DCF placement. One AMEC monitor and at least two <br />Ames laborers were present monitoring each dozer, unless two dozers were within <br />approximately 50 feet of each other during DCF placement. AMEC verified that wrinkles in the <br />geomembrane did not fold over, that PVC grade markers were placed on a maximum 50-foot by <br />50-foot grid and at grade breaks, and that unsuitable material was not present in the fill. AMEC <br />continuously inspected geomembrane during DCF placement, and marked areas for repair, if <br />required. If needed, any repairs were documented and AMEC verified the repairs were <br />completed. After final grading, AMEC monitored removal of PVC grade markers. <br />4.2.6 Temperature Monitoring <br />AMEC monitored ambient air temperatures using a digital thermometer. Temperatures were <br />monitored throughout the day. The lowest and highest daily temperatures are summarized in <br />Table 2. <br />During placement of SF, when the ambient air temperature was less than 32°F for longer than <br />1 hour in the previous 24 hours, AMEC was required to monitor the fill temperatures at depths of <br />3 inches and 6 inches, at a frequency of 6 tests per acre, and calculate the average fill <br />temperature from the lower temperature of the 3-inch and 6-inch tests. <br />SAPROJECTS\1125E CCV CQA\H3 - CONSTRUCTION\LOB CERT REPORTIREPORT BOD`/\LOB CERT REPORT 2009.07.07.DOC <br />14