Mrs. Ruth Clusen 4 May 29, 1979 The Group, therefore, recommends that DOE bring to the attention of appropriate authorities the need for a careful study to assess both the risks and benefits. The study should be done in concert with the Enewetak people. Brookhaven Bikini Data The presentation by Nat Greenhouse to the Advisory Group on March 28 and the letter dated January 10, 1979, from Mr. Greenhouse to Tommy McCraw suggest the following: 1. That communication should be improved between Brookhaven National Laboratory and LLL regarding the design, implementation, statistical analysis and dose estimation procedures with regard to radiological surveys of the environs and people inhabiting the Northern Marshal] Islands. 2. That an attempt be made to improve the statistical analyses of data in all letter and formal reports to DOE. Even though letters may be followed by more comprehensive formal reports it is important that letter reports present effective data summaries to provide DOE with timely information upon which decisions may be based. Use of Rongelap Crabs for Food The Advisory Group was asked by staff to review a memorandum on the radiological impact of coconut crabs from the Northern Islands of Rongelap (Greenhouse; BNL - McCraw; DOE 1/10/79). The Group assumes that the assessment will be the subject of a more formal report since the conclusions given in the verbal presentation appeared to be in conflict with the memorandum. The staff should review the final report and insure that their recommendations are communicated in an effective manner to the Rongelap people. Predictions of Radiation Doses to Present and Returning Residents of the Marshall Islands Because decisions regarding habitation of the Marshall Islands will be based on predictions of radiation doses to present and returning residents, the Advisory Group recommends that all such dose calculations be independently verified by two or more organizations and that the basis for these calculations be clearly presented. This is not intended to reflect on Livermore activities, but we believe DOE cannot risk a repeat of the Bikini experience. A small error could have major consequences. Sin { rely yours, j W. J. Bair, Ph.D. Manager Environment, Health and Safety Research Program wWJB:ms cc: Northern Marshall Islands Advisory Group J. L. Deal G. P. Dix T. F. McCraw