Tonto National Forest

The Executive Summary provides an overview of the Draft Environmental Impact Statement (DEIS) for the proposed Resolution Copper Project and Land Exchange.

The Draft EIS describes the process undertaken by the USDA Forest Service, to evaluate the issues related to and predicted effects of the submittal by Resolution Copper's mining GPO, and legislatively-mandated land exchange.

This document summarizes the Resolution Copper Project and Land Exchange Environmental Impact Statement (EIS) alternatives development process.

This document includes the appendices for the report that summarizes the Resolution Copper Project and Land Exchange Environmental Impact Statement (EIS) alternatives development process.

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.

Shares several similarities with Alternative 2; one key difference is it 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’ 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.

Presentation slides from Alternative Development Public Workshop on March 22, 2017 in Gilbert, AZ.

Pages

Public Hearings

The Forest Service will host its remaining two public meetings in Queen Valley on October 8 and in Tempe on October 10.

Public Hearings

Video & Materials

A video presentation – the same information introduced at each public meeting – as well as meeting materials (posters and newsletter) are available for public review.

Video - Draft EIS

Public Meeting Materials

Draft EIS Released

The Draft Environmental Impact Statement (DEIS) for the Resolution Copper Project and Land Exchange is now available for review under the 'EIS Info' tab.

Draft EIS

Comment on DEIS

Optional ways to comment on the Draft EIS are located under the 'EIS Info' and the 'Public Involvement' tabs.

Comment

Media & General Info

Point of Contact
John Scaggs
Tonto National Forest
john.scaggs@usda.gov

Apache Leap Special Management Area
Apache Leap SMA website