Mixed Waste:
Any radioactive waste that meets the requirements of LLW that contains a RCRA hazardous component. Also, mixed waste is waste that contains both hazardous waste and radioactive material (source, special nuclear, or by-product material as regulated by the Atomic Energy Act of 1954 [42 U.S.C. 2011 et seq.]). Mixed waste is classified by DOE according to the type of radioactive waste that it contains as either mixed low-level waste (MLLW), or mixed transuranic waste (MTRU). DOE's high-level waste (HLW) is assumed to be mixed waste because it contains hazardous components or exhibits the characteristic of corrosivity. If the radionuclides are those that have an atomic number greater than 92, have a half life longer than 20 years, and are present in concentrations greater than 100 nanocuries/gram the waste is termed Mixed TRU waste. The waste in Oak Ridge is predominantly Mixed Low Level Waste.
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