If there is increased utilization of Bikini Island, the projected doses can be estimated by applying the finding thdt the respective Bikini doses would be about eight to ten times the doses for -. Eneu residence shown above (maximum annual and 30-year doses) .16 If return to Eneu and Bikini is delayed, the above dose estimates would be reduced by a factor of two for every 30-year period the return is delayed. This is due to the fact that the radioactivity of the two radionuclides (cesium-137 and strontium-90)} that contribute most to whole body and bone marrow doses, decays in the environment with an effective half-time of 30 years. Attachments 5 and 6 present estimaces of the maximum annual whole body and bone marrow doses for the average population if, Starting with 1979 as the zero time, a return to live on Eneu Island (the six lower curves) or on Bikini Island (the two highest curves) is delayed. Attachments 7 and 8 present similar information for the individuals receiving the highest doses. Attachment 9 shows the predictions for 30-year doses. DISCUSSION The predicted maximum annual whole body and bone marrow doses for the average Eneu Island population in Attachments 5 and 6 can be compared with the 170 mrem/yr federal guidance. If a monitoring program TéThe basis for this estimate is that the concentrations of radio~ nuclides in the soil and in coconuts on Bikini are about eight to ten times greater than those on Eneu. Therefore, consumption of foods grown on Bikini Island would increase the annual dose rate estimates significantly, the increase depending upon the type and quantity of food eaten, Estimates based upon assumed combinations of Eneu and Bikini foods, and imported foods, other than those included herein, can be provided if needed.