Klohn Crippen Berger

This letter provides the potential range of uncaptured seepage with discussion on uncertainties for the Alternative 4 Silver King Filtered TSF.

During a December 2018 meeting, it was agreed by the participants that a catastrophic failure of any of the alternatives would have unacceptable consequences due to the potential for impacts to life, environment and property.

A number of tailings storage facility (TSF) designs are currently being assessed and will be included in the draft EIS (DEIS). This report presents Alternative 8 - Skunk Camp.

A number of tailings storage facility (TSF) designs are currently being assessed and will be included in the draft EIS (DEIS). This report presents Alternative 6 - Skunk Camp.

A number of tailings storage facility (TSF) designs are currently being assessed and will be included in the draft EIS (DEIS). This report presents Alternative 4 - Silver King Filtered.

A number of tailings storage facility (TSF) designs are currently being assessed and will be included in the draft EIS (DEIS). This report presents Alternative 3B - Near West Modified Proposed Action.

A number of tailings storage facility (TSF) designs are currently being assessed and will be included in the draft EIS (DEIS). This report presents Alternative 3A - Near West Modified Proposed Action.

This report presents available ground investigation data for the proposed Near West Tailings Storage Facility (TSF) site in Pinal County, Arizona, and has been prepared for Resolution Copper Mining (RCM) as part of the baseline geotechnical characterization to support the Environmental Impact Statement (EIS).

Assesses conceptual closure covers for the proposed Near West Tailings Storage Facility (TSF) which will be used to store scavenger tailings and cleaner tailings.

This letter report describes the static geochemical testing carried out on cleaner and scavenger tailing slurries. The static testing program is designed to provide data on the short term geochemical behavior of the tailings solid phase as well as an indication of the quality of associated process waters.

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Media Point of Contact

Susan Blake
susan.blake@usda.gov

Apache Leap Special Management Area
Apache Leap SMA website