All agree that coconut radionuclide source in the diet calculation it would planning dose (6). nothing. account consumption has been the principal (e.g., 19, 20), and by Lawrence Livermore for more than 80 percent of the internal Fish meat, an important staple, contributes practically The posstble contribution from fish bone is under investigation. Coconut consumption, however, has been declining in recent years, and imported foods have become increasingly important as Marshallese lifestyle has reacted to hand, resettlement the with influence of external a planned agricultural cultures. program On might the other very well increase the importance of local produce. In view of the foregoing, judgment must be exercised in deciding on a likely “planning diet" allow for for estimating daily radionuclide intake. To possible errors of one sort or another, and especially for the possibility of increased use of local produce after resettlement in order to become more self-sufficient, we have decided to multiply the estimates employed by the Lawrence Livermore team by the factor of 1.75. On this basis, the 30-year cumulative dose Bikini would be 3.3 nm lO a we would be within the 5-rem Federal for Eneu of 4.2 rem standard, but the dose of 30.8 rem for far beyond it (Table 5). Internal Dosage: Water Cistern (rain) water is the chief source of drinking water and is practically uncontaminated (6). On the other hand, the radionuclide levels in ground water, though low, are notable because they exceed one of the two ~ Federal standards (Table 4). Drinking water is regulated by a “practical" Federal standard (21, 22) that sets specific-activity limits for cesium-137 at 200 pCi/l and for strontium-90 at present, the standard Soceazy 8 pCi/l (Table for each is 4). reduced 2s When two or more proportionally. nuclides As stated are in