Amentum Holdings Inc. has secured positions on a new multi-billion pound framework to provide decommissioning solutions for the Sellafield nuclear site in the United Kingdom. Under the 15-year Decommissioning and Nuclear Waste Partnership (DNWP), Amentum will undertake remediation work on disused facilities and retrieve hazardous waste from legacy ponds at the site in Cumbria, England. Sellafield Ltd selected Amentum as the remediation partner for work inside the site's High Security Area and also selected The Decommissioning Alliance $(TDA)$-a joint venture comprising Amentum, AtkinsRéalis, and Westinghouse-as the pond retrievals partner. The work that could be awarded to Amentum is estimated to be worth up to £1.4 billion ($1.9 billion USD). The scope includes waste-led decommissioning, clearance of redundant buildings, preparatory decommissioning work, and the deployment of advanced technologies for site remediation and hazardous material retrieval.