FFCAct BB 1.
Mixed waste is waste that includes both radioactive and hazardous components.
The FFCAct defines mixed waste as waste containing both hazardous waste subject to RCRA, and source, special nuclear, or by-product material subject to the Atomic Energy Act of 1954. As an example, a hazardous compound such as xylene could have been used as a cleaning solvent in a radioactive environment, and residual solvent could have become contaminated with nuclear materials, making it both hazardous and radioactive. DOE operations related to energy research, production and storage of nuclear materials for defense programs, and other applications generate mixed waste. Mixed waste is also generated as DOE facilities are decontaminated and dismantled and as old burial and storage sites are cleaned up. Transuranic mixed wastes contain long-lived radionuclide particles that are heavier than uranium.