5/10/79 AC 1 20 1 RADIOLOGICAL IMPLICATION FOR RESETTLEMENT OF ENEU ISLAND SUMMARY Unless imported food is a substantial and continuing part of ‘the diet of the Eneu population for about 20 years, unless the Eneu population can effectively be prevented from access to Bikini Island for several years, and unless no food from Bikini Island is eaten for about 30 years, it is unlikely that radiation doses to people living on Eneu Island would be in compliance with federal radiation protection guidancel, past practices, however, Based upon previous experience and it is doubtful whether imported food will be a part of the daily diet and that access to Bikini Island can be restricted. Therefore, a return to Eneu Island should be delayed for close to 20 years if radiological dose is the only governing factor unless a firm commitment can be made which will guarantee that adequate imported food will be available and used by the people, and that residence can be restricted to Eneu Island. If the Enewetak radiation exposure criteria’ are to be applied to the Eneu population, it is unlikely that the radiation doses to the people would be in compliance with the criteria for approxiinately 20 years, even if imported food is available and if mobility is restricted. criteria, because of Under either a return to Bikini Island would be delayed even longer the higher levels of radionuclides in the soil. iThe Federal Radiation Council (FRC) recommended exposure limits of 500 mrem/yr to individuals, 170 mrem/yr to average population groups, and 5000 mrem/30 yrs to the average population of the U.S. 2Fnewetak criteria are one half of the FRC exposure limit for individuals 5009210 and 80 percent of the FRC 30-year exposure limit. Gum