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High level waste at the SRS F- and H-Area Tank Farms consists of both sludge and supernate fractions. Supernate contains soluble species. Sludge contains both insoluble species and entrained supernate. The nature and extent of contamination present on waste generated during operation of the F- and H-Area Tank Farms is a function of the tank, the nature of the job generating the waste, variability in waste handling techniques, and other factors. Historically, supernate-contaminated waste had been segregated and manifested as supernate waste. A single, comprehensive characterization for supernate has been developed previously (Reference 4). Sludge-contaminated waste has been manifested by combining sludge and supernate waste streams to account for entrained supernate present in sludge. Separate sludge waste stream characterizations have been developed for each of the F- and H-Area Tank Farms (Ref. 1 and 2). Low-activity waste (LAW) consists of both sludge and supernate fractions. Routine LAW is waste that has a maximum dose rate of 50mrem/hr at 5cm for Sealands and 35mrem/hr at 5 cm for Roll-Offs. However, it is intended that routine, low-activity waste not be segregated; therefore, individual low-activity waste cuts may consist of items contaminated with either supernate or sludge in the same container. Historical waste generation rates of the two waste streams will be used to develop a single waste stream distribution representative of low-activity waste. The single distribution is based on the assumption that the actual contamination present on waste in a series of containers from these tanks will be representative of the average supernate/sludge radionuclide distribution. This document develops a characterization for low-activity waste consisting of both radioactive and hazardous constituents. The characterization includes quantification of the average Sealand and Roll-Off containers of routine, low-activity waste. This characterization will apply only to low-level waste that has a whole body (30 cm) dose rate less than or equal to 5 mrem/hr from an individual waste bag or item and has a radionuclide distribution that is represented by the existing high level supernate and sludge waste streams (FHW-00001 and HTK-00002). This document specifically refers to the issues of waste management related to the F- and H-Area Tank Farms. However, the characterization presented in this document of low-activity waste managed in Sealand and Roll-Off containers applies to any SRS facilities that process the supernate or sludge waste streams that are presently stored in the F- and H-Area Tank Farms

WSRC-TR-2003-00130