there is a probability of appreciable homogeneity concerning the distribution of the dose within the population included in the average."8 Third, "When the size of the population group under consideration is sufficiently large, consideration must be given to the contribution to the genetically significant population dose. The Federal Radiation Council...recommends the use of the Radiation Protection Guide of 5 rem in 30 years...for limiting the average genetically significant exposure of the total U.S. population. The use of 0.17 rem per capita per year, as described (above) as a technique for assuring that the basic Guide for individual whole body dose is not exceeded, is likely in the immediate future to assure that the gonadal exposure Guide is not exceeded."9 body dose is considered to be the equivalent of the Therefore, the whole genetically significant dose. Because of the absence of radiation protection guides specific for the Marshall Islands, criteria were developed from the basic Federal guidance for evaluating land use options for use in planning the cleanup and rehabilitation of Enewetak Atol1.+° These criteria are presented here since they were developed subsequent to the decision regarding the cleanup and rehabilitation of Bikini Atoll. It was + 8See Note 4, p. 27. 9See Note 4, p. 27. l0cleanup, Rehabilitation, Resettlement of Enewetak Atoll ~ Marshall Islands, Environmental Impact Statement, Defense Nuclear Agency, April 1975.