The Oak Ridge Site, located in eastern Tennessee, is one of the three original sites in the Manhattan Project. The K-25 and Y-12 plants were built to explore different methods to enrich uranium, while the X-10 Site was established as a pilot plant for the Graphite Reactor and to explore methods for the production of plutonium. Throughout the following decades, the three sites purified isotopes, conducted advanced research, manufactured weapons components, and enriched uranium. These activities created environmental legacies that placed the Oak Ridge Reservation on EPA’s National Priorities List in 1989.
Watch the video below to learn how environmental cleanup operations in Oak Ridge are modernizing the Y-12 National Security Complex and Oak Ridge National Laboratory and creating new opportunities for the community. It also explores Oak Ridge’s first-of-a-kind achievements and the projects underway that will transform the site in the years ahead.
Oak Ridge News
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In a unique collaboration, the Oak Ridge Office of Environmental Management and contactor UCOR recently assisted one of the largest companies locating at the East Tennessee Technology Park, helping keep a key energy project on track. July 15, 2025July 15, 2025
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For the first time ever, cleanup crews are conducting more than one demolition project simultaneously at Oak Ridge National Laboratory. July 8, 2025July 8, 2025
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Federal and state leaders recently signed a record of decision confirming cleanup of soil is complete at a portion of the East Tennessee Technology Park (ETTP) at Oak Ridge, enabling the reuse of land for continuing economic development. July 1, 2025July 1, 2025
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The Oak Ridge Office of Environmental Management and contractor UCOR have developed a first-of-its-kind training program for workers supporting cleanup at mercury-contaminated facilities. June 24, 2025.June 24, 2025
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Just six months into 2025, the U.S. Department of Energy Office of Environmental Management has racked up significant cleanup accomplishments across the country, with more progress on the horizon, senior EM federal and contractor executives said here last week. June 17, 2025.June 17, 2025
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Oak Ridge Office of Environmental Management contractor Isotek Systems found savings of more than $10,000 annually thanks to the initiative and questioning attitude of its employees. June 17, 2025.June 17, 2025
Erik Olds became the manager for the DOE Oak Ridge Office of Environmental Management (OREM) on June 1, 2025.
Olds previously served at the OREM deputy manager since January 2024, serving as the acting manager from March to June 2025. He has been with the Department of Energy for more than 30 years, including 20 years within the EM program.
As the OREM manager, he oversees the daily operations needed to perform the organization’s environmental cleanup and stewardship, decontamination and decommissioning activities, waste processing and management, surveillance and maintenance programs, and procurement and contract functions. Before his assignment as OREM deputy manager, Olds served as communications director for DOE's Office of Environmental Management headquarters (EM-HQ) and previously as acting chief of staff for EM-HQ.
Click here to view full bio.
High-Level Budget Information
FY22 Enacted (in the millions) | FY23 Request (in the millions) | FY23 Enacted (in the millions) | FY24 Enacted (in the millions) | FY24 Enacted (in the millions) | FY25 Requested (in the millions) |
| $630 | $612 | $637 | $635 | $694 | $658 |
For more information on the Office of Environmental Management's budget process and performance check out the Budget & Performance page.