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Cripple Creek & Victor Gold Mining Company <br />Cresson Project ��� <br />Quality Assurance Monitoring and Test Results <br />Liner Recertification <br />December 17, 2009 <br />2.0 SUMMARY OF EARTHWORK CONSTRUCTION <br />Earthworks activities associated with the LOB relocation included the following: <br />■ Site grading (Phase IVa ramp only); <br />■ SLF installation, placement and compaction, depth verification testing, and preparation <br />of SLF surface for geomembrane deployment; and <br />IN DCF placement above the geomembrane layer. <br />Ames generally used the following equipment during construction: <br />■ Caterpillar D6R LGP Dozer (4); <br />■ Caterpillar D8R Dozer <br />■ Caterpillar 966G Loader (4); <br />0 , ■ Caterpillar 773 Water Wagon; <br />■ Caterpillar CS563 Compactors (2); <br />■ Caterpillar 330 Trackhoe (2); <br />■ Caterpillar 375 Trackhoe; <br />Table 2 presents a summary of the weather during the period of November 10 through <br />November 24 2009 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 IVa ramp with a smooth drum vibratory compactor. The quality of the finished surface <br />was then maintained until SLF was placed. <br />2.2 Soil Liner Fill <br />Based on neat -line survey, Ames placed and compacted approximately 300 cubic yards of SLF <br />in the Phase IVa ramp footprint to project specifications. <br />Ames processed the SLF for the Phase IVa construction as part of the Phase 5 construction. <br />Ames worked the borrow material through a rotary mill and screen to remove oversized material <br />S: \PROJECTS \1125E CCV COA \H2 - DESIGN\LINER RECERTIFICATION REPORT\REPORT BODY\OA MONTIORING AND TEST RESULTS LINER 5 <br />REC ERTI FICATION. DOC <br />