VICTOR (LUKOJ) AND WILLIAM (JELETE) These two adjacent islands located at the southwest end of the atoll are very similar in vegetative cover and background radiation levels. In general, the background ranges from 10 to 180 yR/hr on Lukoj and 10 to 150 uR/hr on Jelete (see Figures 10 and 11). No radiation debris was found on either island. A soil sample taken on Jelete showed the primary contaminants to be 137Cs (75%), ©9Co (12.5%) and }°2™Rh (12.5%). Figure 12 indicates the projected exposure rate reduction based upon these percentages. This sample also contained 82 pCi/g of 23992" Dy and 42 pCi/g of 238Pu (air-dried weight). There are few coconut trees on either island. A single sample from Jelete gave the concentration of !37Cs to be 5.4 pCi/g wet weight. YOKE (ADRIKAN), ZEBRA (OROKEN), ALPHA (BOKAETOKTOK), AND BRAVO (BOKDROLUL) These four small islands located along the western side of the atoll displayed uniformly low levels of background radiation. Maximum ex- posure rates due to gamma radiation were: Adrikan - 50 yR/hr Oroken - 30 yR/hr Bokaetoktok - 15 yR/hr Bokdrolul - 25 yR/hr No radioactive scrap was encountered on any of these islands. Tradi- tionally the islands are used by the Bikinians for the collection of birds and eggs which are abundant. Samples of birds, eggs, and crabs have been collected by the Laboratory of Radiation Ecology, School of Fisheries, University of Washington. Two soil samples taken on Oroken in the same location indicate !37Cs to be 20-25% by concentration of the gamma emitting radionuclides. One sample (surface to one inch deep) showed !25Sb to be about 75% of the total and &°Co about 5%, while in the other (one inch to six inches din depth) !125Sb was not detectable by gamma spectroscopy, 6°Co contributed about 50% and 192MRh the remaining 25%. 20