DRAET -19- bone marrow and 0.03 to 0.05 rem for whole body. All doses were based upon a daily intake of water of 2 liters. ‘4. Marine Foodchain No marine samples were collected during the June 1975 survey. This was the result of both the limited manpower and time available for the “survey and the fact that the marine pathway proved to be much less significant than the terrestrial and external gamma pathways at Enewetak (1, 24). From this relative point of view we expected both atolls to be very similar. The data used, therefore, to evaluate the potential dose via the marine foodchain was obtained from published data (22, 25) and from unpublished data supplied through the courtesy of Dr. Vic Nelson of the Laboratory of Radiation Ecology-University of Washington. the fish data used for the dose assessment. Table 11 lists Table 12 lists the clam data. The average concentration of the radionuclides were determined from the _ Gata in Tables 1) and 12 by weighting by sample size and by assuming that detection limit values ("less than" numbers) were actual concentration values. The final concentration values used in conjunction with the 600 g per day intake of fish to calculate the pCi per day intake via the marine foodchain are listed in Table 13. The species of birds that are readily caught and used as part of the diet are marine feeders, mostly species of terns. Therefore the radionuclide concentrations in their muscle tissue is similar to that in the marine diet. For this reason, birds and bird eggs are considered part of the marine diet for dose calculation purposes. No birds or bird eggs were collected in June of 1975 so the data used to evaluate this gf 9009894