.. TITLE 9UDGET AND REPORTING CODE 1 DATE ?REPARED I CONTRACTOR Assoc!ared 20. f. NAME Universities, CODE BNL Inc. Detail Attachments. 03/31/81 FLA-02-01-01 Dose Reassessment for Rongelap and Utiri;< WP NUMBER I TASK NO, I ?:ViNO. i cont. Technical Progress cont. Expected Progress in FY 1981. Additional samples of soil, food and ash will be analyzed for 1-129. Sr-90 and Pu-239, 240 analysis of teeth samples, especially that from exposed individuals, will be done. Data derived frcm the “’BikiniAsh” studies will be factored into the refinement of the dose estimate. Diet and living pattern studies will be updated. Expected progress i~ FY 1982. of iodine isotopes in fallout, the possible conFactors such as soll~bility tribution from neutron induced activity, the iapact of thyroid seekers other than iodine isotopes on dose, and confidence levels far values of derived quantities such as airborne activity concentrations during fallout will be investigated. Diet and living pattern stzdies will be updated. Expected progress in ~ 1983* !)iet and living pattern studies and dose reassessment will continue until completed for all areas of interest in the Xarshalls. g“ Future Accomplishments. The techniques and expertise developed in the course of this s~udy could be areas subjected to exposure from used to reassess doses zo populations in other fallout or even those resulting from occupational situations in the past. .Ad d itionally, this study will provide a better estinare of the true value for thyroid nodule incidence per unit rad enabling technically sound risk factors to be associated with ionizing radiation exposurz. h. Relationship co Other ?rojects. 1. This study will help establish external and internal dose estimates from the time of the incident to the present, and will complement the aerial survey for external radiation measurements, over these islands, ,~hich has been completed. Together they should present a relia51e picture of doses received by the populations and also enable dose estimates to be projected into the future. 7 -. This stwiy sill be in close conjunction with the 3??%Yarshall Islands Radiological Safety Pr~gram (3.1-02-01-02). Continued collaboration with the ~ni.~ersity of ‘Jashingcon,Laboratory of Radiation Ecology, and the Battelle i?acific Xorthwest Laboratory will be ~intai~ed in the area of sample analysis and data interpretation.