hig. —y [ r ‘hy 13. PUBLICATIONS: 1. 4k, 2. ik, ; Wi, Laboratory Studies of Radionuciide Availability in Prant and Soil Compartments, Lawrence Livermore Laboratory, Rect. ie. (1978). Vy I J.J. Koranda, W.L. Robison, $.£. Thompson, and M.M, Stuart, Enewetak Atoll Radiocecology and Dose Evaluation Program: Ecological Studies om Engebi island 1975-76, Lawrence Livermore Laboratory, Rept. UCRL-52409-1 (1978) J.J. Koranda, W.L. Robison, $.E. Thompson, and C. Tafoyo, Enewetak Atoll Radioecology and Dose Evaluation Prograr: 14A. SCOPE ABSTRACT: A program of radionuclide measurements in soil water, tiute, arc radioecological transport modeling in the Marshall Islands is designe: to fulfill two immediate objectives of meeting high-priority needs for developing information on radionuclide transport and cycling to delineate the effective resettlement of Enewetak Atoll, and supporting the ongoing evaluation at Bikini Atoll. The tong-term goals are tc identify the key parameters affecting the dose to man, determine ttc residence time of key radionuclides in the atoll énvironment, anc provide information required for the implementation of resettlement in both regions. 4B. SCOPE: The Enewetak people, the Micronesian Legal Services, and the Trust Territory were told in 1976 that within a 5-y period we cou'd produce more definitive information ccncerning the time~dependence of the radionuclides in the environment and a timetable for the use of the northern part of Enewetak Atol!?. Mcre recently, DOE and LLL agreed te evaluate closely the possible use of Eneu Island at Bikini Atoll Therefore, our program is designed to ensure that the appropriate data are obtained for these evaluations. Specifically, we will: @ Make measurements to delineate the rates of uptake, redistribution, and removal of radionuclides in the ecosystem, and to develop or refine the concentration factcr. for the critical radionuclides. ® Develop further understanding of radionuclide cycling in the terrestrial foodchains and derive cuidelines for egricultura’ practices that will minimize population exposure via terrestrial foods. e Employ these new data and constants as input to the assessment program for refining the projected doses publishes in NVO-140 (Enewetak Radtological Survey, 1973) for Eneweta: and in the preliminary assessment report for Bikini (sec publication Nos. } and 2).