Caldwell Canyon Mine Project
PROJECT WEBSITE: Caldwell Canyon Revised Mine and Reclamation Plan EIS
All dates below are specific to the schedule of the Environmental Review and Permitting processes for this project.
ENVIRONMENTAL REVIEW AND PERMITTING STATUS
IN PROGRESS
ESTIMATED COMPLETION DATE OF ENVIRONMENTAL REVIEW AND PERMITTING
10/15/2025
ENVIRONMENTAL REVIEW AND PERMITTING PROCESSES
COMPLETED
SECTOR
Mining
CATEGORY
Project Category
FAST-41 Transparency Projects
LEAD AGENCY
Department of the Interior, Bureau of Land Management
Other Agencies with Actions or Authorizations:
Department of the Interior, Fish and Wildlife Service
Description:
Project Sponsor proposes to mine phosphate ore in Caribou County, Idaho, from three existing federal phosphate leases and one state phosphate lease, by constructing two open pits, constructing haul and access roads, installing various utility lines, and constructing water management features, monitoring wells, shop and office facilities, while implementing environmental protection measures and reclamation. Total proposed disturbance is approximately 1,830 acres.
Mining operations would occur on federal phosphate leases and public lands administered by the BLM, on National Forest System lands administered by the USFS, on a State of Idaho phosphate lease and state lands administered by IDL, and on private lands. The leases grant exclusive rights to the leaseholder to mine and otherwise dispose of the phosphate resource at the sites.
Cooperating Agencies: Idaho Office of Energy and Mineral Resources, Idaho Department of Lands, Idaho Department of Environmental Quality, United States Army Corps of Engineers
This project is posted in the interest of transparency and response to Executive Order 14241.
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Permitting Timetable
The permitting timetable below displays data as reported by agencies. Dates for Environmental Review and Permitting processes (Actions) that are in 'Paused' or 'Planned' status are subject to change and are not indicative of a project's final schedule.
- For information about extensions, select an Action from the timetable below and select 'View Action Details' at the bottom of the page.
Action Information
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