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<br />Cripple Creek & Victor Gold Mining Company Exhibit U <br />Cresson Project Amendment 13 <br /> 8 <br />6 DESIGNATED CHEMICAL(S) AND MATERIAL(S) HANDLING <br />Final closure of the VLFs will include double rinsing of the ore with recirculated solution from the <br />VLFs, followed by a hydrogen peroxide-assisted rinsing cycle, if needed, to complete removal of <br />sodium cyanide, per the discussions in Exhibit E. As a result of recirculation and rinsing, <br />associated process equipment will be rinsed and rendered suitable for demolition and salvage. <br />The Mined Land Reclamation Board (MLRB) has approved a standard of an average <br />concentration of CNWAD less than 0.2 mg/L in the rinse water or in results from meteoric water <br />mobility testing of the neutralized ore material. Data supporting achievement of this standard will <br />be provided to the DRMS for review and concurrence. Following concurrence, physical <br />reclamation of the VLFs will proceed. <br />The HG Mill facilities will be decommissioned prior to closure of the VLF2. Chemicals associated <br />with the HG Mill will be removed as part of facility demolition. Rinse water from decontamination <br />of the equipment will be recirculated into the VLF through makeup water. The pH modifiers and <br />dilute sodium cyanide solutions also will be recycled through this process. <br />During periods of temporary cessation, adequate staffing will be maintained to continue to <br />circulate solutions and monitor and maintain water balances associated with the VLFs. Power <br />and emergency back-up power will be maintained. Monitoring and associated reporting activities <br />also will continue during temporary cessation.