Mixed Waste

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    If mixed waste has been generated, there are two avenues left to avoid costly disposal.

    • Neutralization/Inactivation

      • If the “hazardous” portion of the mixed waste can be made non-hazardous, it can be disposed of as regular radioactive waste.

    • Radioactive Decay.

      • If the “radioactive” portion of the mixed waste has a relatively short half-life (less than 120 days), it can be held for decay in the lab and disposed of as regular hazardous waste after monitoring it to ensure the material does not read any counts above natural background.


      • The waste must be held for at least 10 half-lives.


      • RSO does not hold mixed waste for decay.


      • The reason RSO does not hold mixed waste is that hazardous waste picked up by the UW for disposal must be disposed of within 90 days, regardless of its radioactivity.


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