Snapshots

A variation of the proposed action described in the May 9, 2016, version of Resolution Copper’s General Plan of Operations, this alternative would include a split-stream tailings processing method with two tailings types.

It shares several similarities with Alternative 2, but proposes to reduce the amount of water retained in non-potentially acid generating (NPAG) tailings as well as reduce seepage potential through on-site thickening of NPAG tailings and ‘Thin-lift’ (also known as thin layer) deposition.

The only alternative proposing to use filtered tailings instead of slurry tailings. Conveyors and mobile equipment would mechanically deposit potentially acid generating tailings and non-potentially acid generating tailings in two separate, adjacent tailings storage facilities.

This alternative allows for a comparison of the impacts of slurry tailings if placed in a flatter, alluvial setting instead of an upland wash or canyon.

The location for this alternative would enable use of cross-valley embankments/dams requiring less fill to retain tailings compared to a ring-like impoundment, simplifying construction and operations.

Snapshots Updated

The Forest Service is considering five reasonable action alternatives for a Tailings Storage Facility. To view Snapshot summaries and accompanying maps, click here.

View Updated Snapshots

EIS Status

Thumbnail image of EIS Status file

EIS Status graphic updated March 2018

Forest Points of Contact

Media & General Info
John Scaggs
jscaggs@fs.fed.us

Project Manager
Resolution Copper
Mary Rasmussen
mcrasmussen@fs.fed.us

Apache Leap Special Management Area
Apache Leap SMA website