TABLE Ul NCRP DOSE Limits 2/ Individual Whole body Gonads 0.5 rem/yr - - Gonads (alternative 3/ Population 0.17 rem/yr 0.17 rem/yr ai 5.0 rems/30 yrs objective) Criteria Against Which Survey Findings and Alternative Measures Will Be Evaluated The Task Group approached the question of radiation dose criteria from two directions. First, FRC, ICRP, and NCRP recommendations reviewed above were judged as to applicability in this situation. Second, a risk approach was reviewed using information from ICRP, UNSCEAR, and the National Academy of Science BEIR Committee. The results of this latter effort are summarized in Part F which follows. The radiological survey of Enewetak Atoll provides a comprehensive data base needed to derive recommendations relative to the radiologically safe return of the Enewetak people. These recommendations are to be based on an evaluation of the significance of all radioactivity on the Atoll in terms of the total exposure to be ex- pected in the returning population, and on consideration of those reasonable actions and constraints which, where made, will result in minimum exposures. The guidelines used in deriving these recommendations can be summarized as two interdependent considerations: 1. Expected exposures should be minimized and should fallina range consistent with guidance put forward by the Federal Radiation Council (FRC), 1/ For conditions and qualifications on application, see NCRP Report No. 39, ''Basic Radiation Protection Criteria." 2/ To be applied as the average yearly value for the population of the United States as a whole. Report No. 39. 3/ See paragraph 247, NCRP See paragraph 247, NCRP Report Noa. 39. I~6