BUDGET TITLE Dose Reassessment for Rongelap and Utirik CONTRACTOR NAME Associated Universities, 20eo REPORTING DATE PREPARED CODE HA-02 -01-01-O CODE Inc. AND BNL WP NUMBER 03/31/80 TASK NO. REV. NO. o Approach. . The study will comprise: . a. Literature search for all qvailable data concerning the BRAVO test, such as, meteorological conditions and radiation measurements. Discussions with scientific and technical personnel involved in the BRAVO test. b. Use of historic samples and teeth samples to determine 1291, 90Sr, and 239s 240Pu concentrations to derive concentrations of other radionucldies. In addition, excised thyroid glands from exposed Marshallese will be analyzed for 1291 and 99TC and data so generated will be used to estimate the concentrations of short lived iodine isotopes. c. Diet and life style studies to provide information for dose assessment. d. Computer simulation of the BRAVO test fallout to determine the transport and deposition of radionuclides. Management Controls Fiscal control will be exercised in the form of monthly comparisons, over the task term, of actual costs incurred against corresponding line items of the budget. Technical results shall be monitored through a periodic review, by the Contractor Task Manager, of accomplishments by measuring actual performance as compared to expected progress. All work shall be conducted in conformance with generally accepted standards for R&D and other investigative or analytic procedures, as observed by universities Znd large independent research facilities including Brookhaven National Laboratory (BNL). . 2of. Tech~ical Progress. Technical Progress in BY-3 (FY 1979). , A preliminary literature search and consultations with Dr. C.A. Sondhaus, University of California, have been completed. This has resulted in defining areas of uncertainty in information available and establishing the procedural steps that should be carried out to reassess ~he dose estimates. All available data on external radiation measurements, radionuclide concentrations in soil, water, vegetation, animal and food items have been collated. Historic samples collected from Rongelap and Utirik have been submitted for ’291 analysis. Pertinent neteoroIogical data pertaining to the BRA.VO test has been researched and the information s~pplied to Lawrence Livermore Laboratory so that they can go ahead with the computer simulation of fallout transportation and deposition. The !291 determinations of the soil samples have been completed for those historic samples :hat were available. Some of these samples will also be analyzed for ‘9Tc. ln addition, we are exploring the possibility of analyzing “Bikini-