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Cripple Creek & Victor Gold Mining Company <br />Cresson Project <br />Quality Assurance Monitoring and Test Results <br />Phase 413/C Triangle Liner Certification <br />August 10, 2010 <br /> <br />2.0 SUMMARY OF EARTHWORK CONSTRUCTION <br />Earthworks activities associated with the LOB relocation included the following: <br />¦ Minor site grading and reshaping; <br />• SLF installation, placement and compaction, depth verification testing, and preparation <br />of SLF surface for geomembrane deployment; and <br />¦ DCF placement above the geomembrane layer. <br />Ames generally used the following equipment during construction: <br />¦ Caterpillar D6R LGP Dozer; <br />¦ Caterpillar D8R Dozer; <br />¦ Mack RD6885 Tandem Axle Haul Trucks (3) <br />¦ Caterpillar 966G Loader; <br />¦ Caterpillar 773 Water Wagon; <br />¦ Caterpillar CS563 Compactors (2); <br />¦ Caterpillar 330 Trackhoe (2); <br /> <br />¦ Caterpillar 375 Trackhoe; <br />Table 2 presents a summary of the weather during the period of May 6 through May 15, 2010 <br />for the construction activities. <br />2.1 Subgrade Preparation <br />Prior to SLF placement, Ames moisture conditioned and compacted the entire surface of the <br />Phase 46/4C Triangle with a smooth drum vibratory compactor. The quality of the finished <br />surface was then maintained until SLF was placed. <br />2.2 Soil Liner Fill <br />Based on neat-line survey, Ames placed and compacted approximately 280 cubic yards of SLF <br />in the Phase 4B/4C Triangle footprint. <br />S:\PROJECTS\1125E CCV CQA\H2 - DESIGN\TRIANGLE\FINAL\TRIANGLE CERTIFICATION REPORT FINAL REVI.DOC <br />5