2012-02-28_REVISION - M1980244 (84)

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and multiple gas meters) are available either through Process personnel, Safety, or the Mine Rescue Team. VI. Notification All notification should be done in accordance with the Emergency Response Procedures (ERP). All contact information for both internal and external contacts can be found in the ERP under the CONTACTS tab. VII. Monitoring and Remediation Releases to the Land All releases of cyanide or cyanide solution to the land will be cleaned up as soon as practicable. Spills of solid cyanide will be picked up by shovel such that all visible cyanide is recovered. Releases of cyanide solution shall be recovered if practicable, treated in place and contaminated soil shall be excavated. Ponded solution shall be recovered for use in the leaching process if possible. Remaining contamination on the soil surface shall be treated with sodium hypochlorite solution to oxidize the cyanide to less toxic cyanate. Where ground conditions allow, the extent of contamination resulting from a release of cyanide solution will be determined visually. After treatment, solution spills will be over - excavated to remove all wet soil. Where soil already was wet prior to the release or in other situations where the extent of potential contamination can not be determined visually, CC &V initially shall excavate soil believed to be contaminated. Contaminated soil shall be placed on the VLF for recovery /use of any remaining reagent values, or disposed of in compliance with applicable hazardous waste regulations. A report of the spill and its remediation shall be retained in the files of the Environmental Resources Department. Releases to Surface Water In the unlikely event that cyanide solution is released to Arequa Gulch, CC &V shall sample the solution released (if possible), at established surface water sampling locations, and downstream from but as close to the point of entry of the release as is safely possible. Standard sampling, preservation, handling, and analytical methods shall be used and coordinated by a member of the CC &V Environmental Resources Department. In no case shall CC &V attempt to oxidize, neutralize, or otherwise treat cyanide once it has entered Arequa Gulch. Since all cyanide treatment chemicals are themselves toxic to aquatic life, and in situ treatment is only marginally effective at best, all efforts must focus on preventing releases to surface waters. Cyanide Emergency Response Plan EMS: AGANA/CCV Printed Copies are Uncontrolled G: \EMS \Plans \Emergency Response Plans \Cyanide Emergency Response Plan \CERP.doc August 17, 2010 Doe.# E -012 Rcv 07