A Geology and Subsidence Workgroup (Workgroup) was convened as part of the Resolution Copper Project Environmental Impact Statement (EIS) team. The purpose of the Workgroup was to review Resolution Copper Mining’s (RCM) procedures, data, and geologic and geotechnical baseline documents.
The Skunk Camp TSF was indicated as the preferred alternative in the DEIS, which also included a mitigation measure (FS-227) to complete a “more robust and refined” Failure Mode and Effects Analysis (FMEA) risk assessment “with more refined designs and site-specific information,” to be conducted between the DEIS and the Final EIS to address dam safety comments.
The purpose of this memorandum is to detail the steps taken between the DEIS and final EIS (FEIS) to further revaluate potential mitigations for the project, leading to the mitigation and monitoring measures included in the revised appendix J of the FEIS.
