Ree 2 Gath dak dubbed ale oo, . ., : Re a ee Ratio of observed activity to MPC (water)* Ryl06Sample** Rnt06 y92 p54 pe55 we59 C997 C058 G69 765 Clam kidney Belle Is. 9-22-56 -.- 0.05 O.1 le. 40. dil. 9.7 44.7 8.65 --- ~-- O,42 0.32 --- 1 .2 03 9-23-56 --- “-- 0.32 3.2 --- 09 14 03 0.13 Fish liver Belle Is. 5 and 6, 54 --- --- 0.08 5.3 --- 005 --- .008 0.01 9-23-56 CeO EN Bhai Fish liver homogenate Fox Is. Bonito liver Fox Is. In the clam kidney the levels of Mn", Fe», Fe°2, Co’ and Co are greater than the maximum permissible concentration in water for human consumption. In 4&n average of the fish livers, however, only the level of Fe is greater than the MPC. The levels of activity in these samples, however, are undoubtedly greater than the average for the animals of the Pacific Proving Ground, since the samples were collected in regions subjected to greater than average amounts of contamination. The gen- eral levels of non-fission product radioisotopes in the marine organisms and the variation in radioactivity content between indi- * MPC/ml Ho0 for Mn2*21.3x1973 ue (Seymour, 1957), Fe>>=4x1073, Fe°921x1074 uc, Co?’e7.2x1073, C05821,5x10-3, Co%2x1072, *#* See appendix table r at ay ve ] zn©5.6x19-2 (Handbook-52)