When compared to the Peg Leg–Slurry Alternative, this alternative allows a direct comparison of the impacts of using a liner on a slurry tailings facility. It also allows a comparison between dam types.
When compared to the Proposed Action, this alternative allows a comparison of the impacts of slurry tailings if they were placed in a flatter alluvial setting instead of the rougher topography near Superior. This location also allows a comparison if tailings were moved to a location farther from people and with less recreation.
This alternative allows a comparison of the impacts of slurry tailings versus dry-stack (or filtered) tailings, and allows a comparison of whether the specific location selected for tailings in the General Plan of Operations is preferable to other locations near Superior, Arizona.