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ICMC RECERTIFICATION SUMMARY AUDIT REPORT <br /> <br />CC&V uses the Newmont corporate procedures for management of change to evaluate changes in <br />processes, materials, equipment, systems, programs, or resources and control their implementation. The <br />proposed change is evaluated using a risk assessment. Required controls to reduce any potential risks <br />associated with the proposed change are assigned to specific staff with target completion dates and <br />described in an action plan. For high or extreme changes, the approvers include the safety and <br />environmental managers. The approved change is communicated to workers and training is provided, if <br />necessary, prior to the change implementation. The auditors reviewed examples of completed management <br />of change forms and risk assessments to verify compliance. <br />Inspections of the cyanide facilities are conducted on a shift, weekly, monthly, quarterly, and annually basis. <br />These inspections are sufficient to assure and document that the cyanide facilities are functioning within the <br />design parameters. The operational safety walkthrough inspections for the ADR1, ADR2 and HGM and <br />PSES areas cover the condition of tanks, pumps, valves, pipes secondary containments, HCN sensors and <br />safety showers and eye stations. The operational safety walkthrough inspections for the two VLF areas <br />cover the condition of the PSSA pumps and the ESP. In addition, maintenance people conduct monthly <br />inspections of the tanks, sumps, pumps, secondary containments and others. CC&V conducts <br />non-destructive testing (NDT) on the reagent strength cyanide tanks and all cyanide process tanks. The <br />solution reports for ADR1, ADR2 and the Mill daily leach round report for the HGM cover elements such as <br />tonnages, densities, pH and cyanide concentrations and pond levels to assure the facilities are operating <br />within design parameters. CC&V monitors the leak collection systems at the PSSAs of the VLFs and the <br />ESP as well as the leak collection systems and underdrains at the VLF ore placement areas on a weekly <br />basis. Operations also conducts inspections of the leak collection systems every shift. Stormwater ditches <br />and sedimentation traps are inspected quarterly by the Environmental Department. The auditors reviewed <br />completed examples of the inspection forms to verify compliance. The auditors also observed that the <br />cyanide facilities were generally in good condition, without leaks, salts, or other issues that would be related <br />to inefficient inspections. <br />CC&V has implemented a maintenance program via the SAP software that includes both preventative <br />(scheduled) maintenance and corrective (unscheduled) maintenance. The maintenance program includes <br />the elements necessary for cyanide safety management including fixed HCN monitors, pH meters, NDT on <br />cyanide solution tanks, tank level indicators and interlock systems, pond level indicators, sump level <br />indicators, tanks and pumps, backup generators and others. The auditors reviewed examples of completed <br />maintenance records from the SAP system from 2014 to March 2017 to verify that the preventive and <br />corrective maintenance programs were implemented as required during the recertification period. The nature <br />and date of corrective actions are documented in the inspection forms or through the SAP records. The <br />auditors randomly picked a couple of deficiencies noted on inspection forms for the recertification audit, and <br />the maintenance staff were able to pull up the records in SAP to verify the completion date, the name of the <br />staff involved, and the time it took to complete. <br />CC&V has 11 fixed backup generators to operate the critical components at the cyanide facilities in the event <br />of a power outage. In addition, of the generators, CC&V has designed the PSSAs of VLF1 and VLF2 to <br />contain a 12-hour draindown volume due to power loss. The auditors observed these generators to verify <br />they exist and are in good condition (visually) during the site visit. The auditors reviewed closed maintenance <br />work orders related to the generators to verify compliance. <br />Standard of Practice 4.2: Introduce management and operating systems to minimize cyanide <br />use, thereby limiting concentrations of cyanide in mill tailings. <br />CC&V is: <br /> in full compliance with <br />Standard of Practice 4.2 in substantial compliance with <br /> not in compliance with <br />Summarize the basis for this finding: <br />The operation is in FULL COMPLIANCE with Standard of Practice 4.2; introduce management and operating <br />systems to minimize cyanide use, thereby limiting concentrations of cyanide in mill tailings. <br />CC&V Mine <br />Name of Facility __________________________________ <br />Signature of Lead Auditor <br />July 28, 2017 <br />Date <br />July 2017 <br />Report No. 1663584-003-R-Rev0 10