TITLE | BUDGET AND 2EPORTING CCOE DATE PREPARED I ' Dose Reassessment for Rongelap | and Utirix CONTRACTOR NAME CODE Associcted Universities, Inc. -Jt. HAO2-01-901-0 BNL WP NUMBER 03/31/80 | TASK NO, REV NO. 0 Technical Progress cont. ash” che fallout material thace settled on the Japanese fishing vessel, These samples should provide the most accurate characterization of the fallout. Prelininary compucer sigulations of fallout transportation and deposition have been conmoleced. Daca analysis of the recent diet and life style study has been completed. Discussion with scientists and technical people who were involved with the BRAVO tesce is being continued. Analysis of the Marshallese teeth samples for Pu {isotopes is in progress. Expected Proeress in BY-2 (FY 1980). A Final report on the diet and life scyle for the Marshallese will be completed. The compucer simulation of fallout will also be completed. Thyroid glands from the exposed Marshallese will be analyzed for 99Tc and 129T, Analysis of the “Bikini-ash” will be done as soon as we get an aliquot of the sample. It is also expected that data on the exposed Japanese fishermen will be made avatilable ac chac cime. Preliminary analysis of the data generated so far will be made using existing models. The results will be extrapolated to presenc times so as to test the validity of the models used. Expected Progress in BY-1 (1981), Final dose estimates to che exposed inhabitants of Utirik and Rongelap should se completed. The methodology developed will be extended to Likiap and other islands which were on the “fringe” of the fallour pattern. 20g. Future Accomolishments. The cechniques and expertise developed in the course of this study could be used Co reassess doses to population in ocher areas subjected to exposure from zallouc or even those resulting from occupational situations in the past. ~Oh. Relationship to Other Projects. a. This study will help establish dose estimates from the time of the inci- b. This study will be in close conjunction with che BNL Radiological Safety dent to the present, and will complement the aerial survey for external radiation measuremencs, over these islands, which has been completed. Together they should present a reliable piccure of doses received by the populations and also enable dose estimates to be projected into the future. Program in the Marshall Islands (HA-02-01-02-0) and with related programs of the 3NL Medical Department (HA~02-01-01-0). Continued collaboracion with the University of Washington, Laboratory of Radiation Ecology, and the Batrelle Pacific Northwest Laboratory will be maintained in the area of sample analysis and data interpretacion.