The U.S. Department of Energy’s Oak Ridge Office of Environmental Management uses multiple prime contractors to conduct its major cleanup projects at the site. These companies include United Cleanup Oak Ridge (UCOR), Isotek Systems LLC, and APTIM North Wind Construction.

United Cleanup Oak Ridge (UCOR) is the Department of Energy's primary cleanup contractor for the DOE Oak Ridge Reservation focused on large-scale cleanup of the Y-12 National Security Complex and Oak Ridge National Laboratory. The contractor is also responsible for completing soil and groundwater remediation and facilitating land transfers at the East Tennessee Technology Park (the former Oak Ridge K-25 Site). UCOR is a limited liability company made up of the following members: AECOM Energy & Construction, Inc., an Amentum Company; Jacobs Technology Inc., a Jacobs Company; and Honeywell International Inc., a Honeywell Company. UCOR’s teaming subcontractors include RSI EnTech, LLC; Strata-G, LLC; Longenecker & Associates, Inc.; and Environmental Alternatives, Inc. 

Isotek is a wholly-owned subsidiary of Atkins. The company’s principal mission in Oak Ridge is the processing and disposition of the Department’s inventory of Uranium-233 that is stored at the Oak Ridge National Laboratory.

For more information about current ongoing acquisitions with the Office of Environmental Management, visit the EM Consolidated Business Center.

Contracts & Fee Determinations