DISPOSAL OF CONTAMINATED MATERIAL For disposal of contaminated material, there avpearesobe several categories, each requiring separate consideration: 1. Contaminated scrap, non-plutoniun. 2. Contaminated soil, non=-plutoniun. 3. Contaminated scrap, plutonium. 4. Contaminated soil, plutonium. 5. Pieces of plutonium metal. Some of the above are below the ground surface such as in burial sites. Some is near the surface such as the pieces of plutonium metal on YVONNE. With regard to disposal, the Task Group considers it appropriate to cite the objectives for disposal, to list possible approaches for disposal, and to suggest possible interim measures where appropriate. seteptlgtig/ Table 12 and the,discussion in NV-140, Vol. I, contains information on known or suspected burial sites for radioactive debris. The Holmes and Narver “Engineering Study For A Cleanup Plan, Enewetak Atoll-Marshall Islands," Hn.-1348.1, contains information on the location and quantity of other above ground contaminated scrap. Considering the relative short radiological halftimes for the fission products and induced radioactivity found on such scrap and debris, the Task Group suggests that the objective for disposal is to make this debris, particularly scrap metal, unavailable to the people when they return. Possible approaches for disposal are: l. Disposal in water filled and underwater craters. 2. Shallow land burial wherein the radiation level of the scrap is not significantly greater than the radiation level on land. 014