Jacobs Engineering Group Inc., as a member of the United Cleanup Oak Ridge LLC (UCOR) joint venture, was awarded the Oak Ridge Reservation Cleanup Contract (ORRCC). UCOR, formed by Amentum, Jacobs and Honeywell, will support the U.S. Department of Energy's (DOE) mission by performing environmental clean-up at the Oak Ridge Reservation (ORR), which includes the Y-12 National Security Complex (Y-12), Oak Ridge National Laboratory (ORNL) and the East Tennessee Technology Park (ETTP). The DOE estimates the contract value at $8.3 billion, to be awarded over a 10-year period. The new contract will replace the ETTP contract awarded in 2011 to Jacobs as part of URS|CH2M Oak Ridge LLC. UCOR will deliver the ORRCC under DOE's End-State Contracting Model. UCOR's team includes four pre-selected small businesses, RSI EnTech, Strata-G, Longenecker & Associates and Environmental Alternatives Inc. The single award indefinite delivery/indefinite quantity contract allows DOE, UCOR and project stakeholders to collaborate to define the end states necessary to accelerate work at ORR. UCOR will be responsible for cleanup and remedial actions at ETTP; cleanup of excess facilities at ORNL and Y-12; design, construction and operation of the new onsite disposal facility, Environmental Management Disposal Facility; operational activities and surveillance and maintenance for multiple EM operational and non-operational facilities; and core functions for central and project services.