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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 1 <br />1. INTRODUCTION <br />Cripple Creek & Victor Gold Mining Company (CC&V) operates the Cresson Project located in <br />Teller County, Colorado, near the cities of Cripple Creek and Victor. The Cresson Project is a <br />mining and ore beneficiation facility that is composed of surface mines as well as two Valley Leach <br />Facilities (VLFs), two absorption, desorption, and recovery (ADR) plants, and associated <br />infrastructure; all of which were designed to meet or exceed the requirements established by <br />C.R.S. §34 32-101 et seq. and regulations promulgated there under the Mined Land Reclamation <br />Board (MLRB). <br />The existing VLFs, VLF1 and VLF2 have been constructed in multiple phases. VLF1 has five phases, <br />the most recent of which was completed in 2010. VLF2 has three phases, and construction on <br />the third phase was recently completed in 2023. CC&V is proposing to expand the footprints of <br />VLF1 and VLF2 to accommodate additional ore reserves being identified within the mine area. <br />This report presents the design for the VLF1 Phase 6 and VLF2 Phase 4 Expansions, which will <br />generally expand the footprint of VLF2 to the south, and VLF1 to the north. <br />1.1. Project Description <br />The VLF Expansions is the proposed expansions of the existing VLF1 and VLF2. The proposed <br />expansion of VLF2 will add approximately 4.1 million square feet of lined pad area to the south <br />and east of the existing facility, and the proposed expansion of VLF1 will add approximately 4.4 <br />million square feet to the north and east of the existing facility. The two expansions will meet in <br />the middle to effectively form one large VLF, increasing the total lined pad area to 47.4 million <br />square feet. With the proposed expansions, the total capacity of the VLF’s will increase by 189 <br />million tons to a total capacity of 716 million tons assuming an average ore density of 110 lb/ft3. <br />Currently, two types of materials are placed in VLF2 with haul trucks for subsequent leaching: <br /> Crushed ore, that has been through a primary and secondary crushing operations to <br />reduce the nominal size of the material to ¾-inch or less (¾-inch minus); and <br /> Run-of-Mine ore (ROM), material that has not been through the crusher. <br />The general design of the VLF Expansions is comprised of a geomembrane lined pad expansion <br />and a new dedicated internal Process Solution Storage Area (PSSA) for VLF1 Phase 6. The VLF2 <br />Phase 4 expansion will drain towards the existing VLF2. The solution applied to ore within the <br />VLF2 Phase 4 footprint will be routed directly to ADR2, except when flows cannot be routed to <br />ADR2, it would flow into VLF2 Phase 1/2 PSSA via an infiltration gallery on the 9550-foot bench <br />above ADR2, as shown on Drawings A028 and A029. VLF1 Phase 6, which is a part of the VLF1 <br />Expansion, will include a new PSSA that will collect solution from the Expansion footprint.