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• <br />Construction of Phase 5 of the VLF is anticipated to begin in 2009 and take about 3 <br />construction seasons to complete. Utilities within the Phase 5 extension area footprint <br />will be relocated in 2009, followed by preparation of the subgrade. The SLF is expected <br />to be constructed in 2010. The liner will be placed in 2011. The actual construction <br />schedule will depend on various factors, with weather conditions during the construction <br />season being an important consideration. <br />6.3.1 Clearing and Soil Stripping <br />Preparation of the foundation for Phase 5 includes clearing and grubbing of <br />vegetation and stripping of unsuitable foundation material. Observations indicate <br />that some suitable growth medium material may be available from the Phase 5 <br />area. Much of the area has been affected by previous activities and the actual <br />quantity of growth medium available may vary from the estimated volumes. This <br />growth medium will be placed in one of the stockpiles as shown on Drawing C- <br />4b. <br />6.3.2 Site Regrading <br />Along the western edge of the Phase 5 PSSA, the foundation will consist of <br />compacted Phase IV ore. The Phase IV ore will be regraded to support <br />geomembrane liner placement. The regraded ore surface will be ripped, moisture <br />conditioned, and compacted to provide a firm surface for the PSSA. This is <br />similar to the construction of the Phase IV PSSA over the Phase III ore slope. <br />The eastern edge of the PSSA and the VLF will be founded on either compacted <br />fill over bedrock or compacted AGOSA overburden. In areas adjacent to Squaw <br />Mountain, the PSSA and VLF will be founded on compacted fill overlying <br />granodiorite bedrock. The northeastern section of the PSSA and VLF will be <br />founded on regraded AGOSA overburden. To reduce the potential for differential <br />settlement due to large variances in particle size in the OSA, a 3-foot thick layer <br />of structural fill will be placed and compacted over the regraded AGOSA slope. <br />In some areas, geogrid and/or geotextile will be used to bridge between gaps in <br />regraded slope and help distribute localized differential settlement. <br />Along the northern edge of the PSSA and VLF, the foundation will consist of <br />compacted structural fill. Compacted structural fill will form the northern <br />termination berm for the VLF and the PSSA embankment. Within the east-central <br />• Cripple Creek & Victor Gold Mining Company <br />Cresson Project Mine Life Extension <br />6-7