BGC Engineering

This report summarizes the Groundwater Modeling Workgroup evaluation of the model construction and approach for the groundwater model used to evaluate future groundwater conditions at and surrounding the proposed Resolution Copper panel cave mine.

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.

The purpose of this memorandum is to summarize the available information supporting this approach, some considerations in managing pyrite tailings, the available guidance and best practice, other examples of subaqueous tailings disposal, and to generally comment on the applicability for this Project.

The Geology/Subsidence Workgroup initially reviewed data supplied by RCM and their consultants in the GPO, and other available data.

This internal draft memorandum provides a summary of mining-induced seismicity as it may relate to the Resolution Copper Project block-caving mine currently proposed near Superior, Arizona. This document includes a brief discussion of the causes, mechanisms, and occurrences of induced seismicity, particularly as it relates to the proposed mine and possible impacts from the proposed mining activities.

This memorandum has been prepared to document hydrologic analyses completed for the DEIS alternatives.

This technical memo summarizes the evaluation of the model construction and approach for the groundwater model used to evaluate future groundwater conditions at and surrounding the proposed Resolution Copper panel cave mine. The groundwater model does not consider impacts from the future tailings facility or water supply pumping over 5 miles distant from the site.

This memorandum provides a background of relevant state regulations and guidelines for assessing fault-related geohazards around tailings facilities, summarizes published geological mapping around the Skunk Camp TSF site, evaluates the Project’s assessments of Quaternary faulting, and provides recommendations to fill key knowledge gaps.

This memorandum provides a summary of relevant state regulations and guidelines for assessing seismic hazard and estimating design ground motions as well as a summary assessment and any review comments pertaining to the objectives listed above.

This memorandum provides a summary of relevant state regulations and guidelines for assessing seismic hazard and estimating design ground motions as well as a summary assessment and any review comments pertaining to the objectives listed above.