r ;- ..4 DRAFT . EPA is the agencyresponsible for establishing guidance on radiation dose limits for persons exposed to radioactive elements in the general environment. In September 1977, EPA published proposed guidance on more stringent dose limits for persons exposed to transuranium elements. DOE EPA revised the Enewetak cleanup criteria to try to meet these guidelines. did not, howeve$ participate in establishing the Enewetak Atoll radiological cleanup criteria nor has it evaluated the criteria being USed= DOE’s advisory group on the cleanup criteria is of the opinion that the revised cleanup criteria will result in average transuriinicraai~tion doses commensurate with the proposed EPA guidelines. But, it stated th:t it did not find it possible to develop reasonable guidance that would assure that radiatfon doses from transuranics to the returning people of Enewetak would not significantly exceed the proposed EPA guidelines. It pointed out the uncertainties inherent in our present understanding of the problem . Further, it advised DOE that perhaps more important, many of the factors that are involved in movement of transuranics in the environment and the disposition and retention of transuranics in human beings are not well establ-ished. Post-cleanup hazards DOE is responsible for providing radiological cleanup criteria for Enewetak Atoll as well as for assessing the post-cleanup situability of the atoll for habitation. EPA has analyzed the potential hazards to individuals in the general population as a result of present levels-of transuranic -elements existing , 23 nn”D/ ~.\ ‘~~:- .