Subaqueous Disposal of Pyrite Tailings

The objectives of this memorandum are to:

• Summarize the information provided by RCM and reviewed by BGC and the Workgroup
• Describe key considerations, as well as available guidance and best practice in the industry for subaqueous disposal of reactive tailings
• Comment on the applicability of subaqueous disposal in an arid environment.

This memorandum does not address other technical aspects of the proposed TSF and does not include an independent assessment of the minimum water cover requirements, or the associated make-up water requirements necessary to ensure adequate water cover.