ANTIMONY-BASED LIQUID METAL BATTERIES
NEPA SCOPE NARROWED FOLLOWING SDEIS¹
2020 DEIS
2022 Supplemental
DEIS
Preferred Alternative
Identified
Plan of Restoration and Operations (PRO)
Modified Mine Plan - Burntlog Route
Alternative
Modified Mine Plan - Burntlog Route
Alternative
Modified PRO
Modified Mine Plan - Johnson Creek
Route Alternative
Alternative Tailings Location
No Action Alternative
Johnson Creek Access Route
No Action Alternative
2022 SDEIS Preferred Alternative:
Incorporates water management &
closure activities reducing long-
term water treatment duration.
Incorporates measures to manage
stream temperatures.
Reduces potential for impacts
associated with access,
transportation, and hazardous
materials on Johnson Creek and
the East Fork SFSR.
Perpetua's Proposed Plan identified as Preferred Alternative in Supplemental Draft EIS
1 Under NEPA, a "Preferred Alternative" is identified by a Federal Agency in a DEIS to let the public know which action the agency is leaning toward selecting as final.
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