These July 1981 exposure rate estimates indicate that all of the islands Yugui have estimated exposure rates similar to those of Bikini Island in 1975 (Gr 79). The yo year net external integrated dose equivalent is estimated to be less than 2.2 rem for any full time inhabitant of these islands. ,The 10 year net extenp@ integrated dose equivalent for all other islands at Rongelap Atoll is estifiated to be less than 0.25 ren. Significant internal dose equivalent could arise from the coconut food product and coconut crab dietary pathways. An adult who ingested an average of 100 grams per week (Du 57) of northern island coconut crab would have incurred a dose equivalent commitment from Cs-137 and Sr-90 of 15 mrem to red marrow and 5 mrem to the total body during the year April 1978 to April 1979 (Le 81). In the future, this dose equivalent commitment from crab intake will decline as the radioactivity content of crab declines with time. At least a three fold decrease in the annual dose equivalent commitment could be expected every 20 years if the crab population were not reduced by harvesting. Coconut tree products from Rongelap Island were obtained in April 1978 and the results are presented in Table 2. In addition a ratio of exposure rate to coconut activity per unit mass for Cs-137 is shown in Table 2. This ratio leads to calculated 1981 coconut activity per unit mass estimates as listed. Other studies indicate a one to one ratio between the wet activity per unit mass of coconut meat and coconut fluid (NVO-140). The BNL measurements are based on a small sample size (12 fruits) and this could account for the difference. However, a similar ratio is obtained with data from UW 55. According to Na 80, the adult coconut product intake could be as much as 380 kilograms per year of coconut milk, 390 kilograms per year of coconut meat, and 140 kilograms per year of coconut sap. person consuming only locally available food. These quantities are for a Based on this product intake, the adult Cs-137 activity intake from the ingestion of coconut products was determined for a 10 year period post July 1981. The total Cs-137 and Sr-90 intake from coconut crab was also determined for this same 10 year period. These estimates take into account the decline in Sr-90 and Cs-137 activity in these food products with time. In order to calculate the intake by an adult, the coconut sap Cs-137 per unit mass was assumed to equal the coconut milk Cs-137 per unit mass value. This is approximately an average of the relationship between sap and milk reported by Ro 81 and by. Le 80. For example, the total Cs-137 intake on Naen Island from the ingestion of coconut products and crab over a 10 year period is estimated to be 160 uCi. The total Sr-90 at Naen from the ingestion of crab is estimated to be 0.28 yCi. A total intake of Cs-137 and Sr-90 was calculated for each island of the atoll. From the intake data, an estimate of future dose equivalent commitment was determined. The results are shown in Table 3. For each island four assumptions were made: 1) all food eaten is indigenous, 2) the quantity of food eaten is that suggested for a person in a type A community (Na 81), 3) coconut products and coconut crab are the major internal dose pathways, and 4) tay. "iw of Rongelap Atoll could be inhabited year-round, if there were no contribution to dose from internal sources. The islands of Gejin, Naen, Kabelle, Aerik and