The 890 square-mile Idaho National Laboratory Site (INL), located in southeastern Idaho, was first established in 1952 as the National Reactor Testing Station. The original mission of the INL site was to develop and test civilian and defense nuclear reactor technologies and manage spent nuclear fuel. Fifty-two reactors — most of them first of a kind — were built at the site, including the Navy’s first prototype nuclear propulsion plant. Of the 52 reactors, four remain in operation.
Idaho Cleanup Project Photo Gallery
Idaho News
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Idaho Cleanup Project efforts have improved the water quality of the Snake River Plain Aquifer for over 35 years. January 20, 2026January 20, 2026
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Idaho Cleanup Project crews replaced aging ducting at the Idaho Nuclear Technology and Engineering Center to improve a crucial ventilation system supporting operation of onsite underground waste tanks, completing an infrastructure upgrade that will increase safety and functionality. January 13, 2025January 13, 2026
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The Idaho Cleanup Project has closed the first chapter of cleanup of three legacy nuclear propulsion prototypes at the Naval Reactors Facility by completing deactivation and demolition of the defueled Submarine 1st Generation Westinghouse — the historic Navy prototype that helped develop the first nuclear-powered submarine, USS Nautilus. December 23, 2025December 23, 2025
Site Manager
Nicholas Balsmeier became the manager for the Idaho Cleanup Project (ICP) on June 1, 2025. He joined EM with over 20 years of experience with aerospace, nuclear maintenance, operations and oversight of environmental restoration activities.
Before becoming the manager, he was with the ICP for more than 11 years as federal staff and five years as a contractor. He was formerly the Assistant Manager for Idaho Nuclear Technology and Engineering Center.
As the ICP manager he is responsible for the management and oversight of the treatment, storage, and disposition of a variety of radioactive and hazardous waste streams, removal and disposition of targeted buried waste, and the removal of the Department of Energy's inventory of spent nuclear fuel and high-level waste from Idaho.
Click here to view full bio.
High Level Budget Information
| FY24 Request (in the millions) | FY24 Enacted (in the millions) | FY25 Request (in the millions) | FY25 Enacted (in the millions) | FY26 Request (in the millions) |
|---|---|---|---|---|
| $459 | $490 | $471 | $493 | $473 |
For more information on the Office of Environmental Management's budget process and performance check out the Budget & Performance page.