2008-04-15_REVISION - M1980244 (329)

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• • C] CC&V has implemented measures to protect wildlife from open waters that exceed 50 mg/1. Apart from the single small equalization pond previously mentioned, there is no open water, and no opportunity exists for cyanide concentrations to exceed 50 mg/1 WAD cyanide. These measures and design features include: • maintaining the cyanide concentration/addition at about 0.21b/ton of ore or approximately 10 mg/1; • using buried drip emitters, except for side hill leaching; • regular visual inspections of ponds, pads and distribution lines by each shift; • fencing of the emergency storage pond; • employing bird balls and fencing at the small equalization pond used to maintain equilibrium between the Phase II drainage basin and the Phase II PSSA; • installation of a hydrogen peroxide detoxification system upstream of the emergency storage pond to ensure that WAD cyanide concentrations of any water released to the emergency storage pond as a result of unusual precipitation events are less than 50 ppm; and • site-wide implementation of the CC&V Wildlife Protection Plan, which includes an electronic bird hazing system at the external storage pond. This plan describes policies and SOPs related to preventative measures, maintenance requirements, reclamation considerations, and reporting. Monitoring results for a single 15' X 20' open water equalization pond (a.k.a. the "birdball pond") were reviewed; values consistently ranged between 10-15 mg/1 WAD cyanide. The pond was securely fenced and entirely covered with birdballs. No wildlife mortalities associated with cyanide have been recorded since the mine began operation; this was verified by discussions with CC&V staff and the review of the three most recent years of inspection data. Cresson Project Name of Mine J ~C/ ~` Signature of Lead Auditor 10 September 2007 Date Page 16 of 41