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Cripple Creek & Victor Gold Mine <br />Valley Leach Facility Expansions <br />Detailed Design for Permitting <br />NewFields Project No. 475.0106.064 <br />September 2025 <br /> <br /> <br /> <br />Page 8 <br /> <br />Figure 3.1 - Particle Size Analysis <br /> <br />4. VALLEY LEACH FACILITY DESIGN <br />4.1. General <br />The VLF1 and VLF2 Expansions’ designs are consistent with the previously approved VLF designs <br />that have been constructed, with some minor modifications that allow for the utilization of <br />existing infrastructure. Characteristics of the proposed expansion are summarized below: <br /> The expansion will push the VLF2 footprint south and east until it is adjacent to VLF1 Phase <br />4, adding 4.1 million square feet of lined area. The VLF1 footprint will expand to the north <br />and east, adding 4.4 million square feet of lined area. The VLF1 and VLF2 Expansions will <br />add a total of 189 million tons of ore capacity to the existing facilities. <br /> With the exception of Joe Dandy Hill, the VLF1 and VLF2 Expansions’ footprint <br />predominantly sits within previously disturbed land; i.e., the footprint already has been <br />cleared and grubbed of unsuitable materials, topsoil has been removed and stockpiled, <br />and the underground workings have been removed or already remediated. <br />The VLF2 Expansion is graded to drain towards the existing VLF2. Solution intercepted by the <br />High-Volume Collection Pipes will feed directly into ADR2. During periods of time of plant <br />maintenance or a power outage, the solution coming from VLF2 Phase 4 will be directed into the <br />VLF2 Phase 1/2’s PSSA by way of an infiltration gallery as shown on Drawings A028 and A029. <br /> The VLF1 Phase 6 Expansion includes a new PSSA in the facility. This expansion proposes <br />the PSSA be located within the existing crusher area and has an embankment located on <br />the eastern edge of the VLF1 Phase 6 expansion.