recognized that decisions on land use involve consideration of predicted radiation doses which have inherent uncertainties. To make allowance for this, radiation criteria were chosen that are 504 of the annual Federal guidance for individual whole body and bone marrow doses and 80% of the 30-year whole body dose for population exposures. Therefore, the Enewetak criteria limits the dose to the whole body or the bone marrow of individuals to 250 mrem/yr and the dose to the average individual within the population to 4000 nrem/30 yr. (It should be noted that use of a percentage of the FRC values "... is not to be viewed as an attempt to establish new standards but is considered to be a necessary precaution in the application of current standards." The adoption of Limits for Enewetak equal to one-half the FRC guide for individuals and 80 percent of the FRC guide for 30-year limits is a result of the uncertainty concerning dose estimates which depend greatly on the foods people will choose to eat and the way they will choose to live,14 While dose estimates are to be compared to these percentages of the FRC guides, actual exposure levels monitored after the people return should be compared to the 100 percent values of the FRC guides.1) CALCULATED DOSES LIVING IN ENEU The calculated doses for two assumed diets. 14 shown below are for two living patterns and The diets are based on the recent experience Ilsee footnote 10, Vol. II., Sec. B, p. III-10. 12See footnote 10, Vol. I., Sec. 5, p. 5-7. 13see footnote 10, Vol. I., Sec. 5, p. 5-7 and Vol. II., Sec. B, p. III-1i. 14411 dose estimates are rounded off and are based upon information contained in "An Updated Radiological Dose Assessment of Eneu Island at Bikini Atoll," Robison, Gm W. L. and Phillips, 300421 W. A., UCRL-52775, 1979, in draft.