DISCLAIMER The following is a staff memorandum or other working document prepared for the members of the Advisory Committee on Human Radiation Experiments. It should not be construed as representing the final conclusions of fact or interpretation of the issues. All staff memoranda are subject to revision based on further information and analysis. For conclusions and recommendations of the Advisory Committee, readers are advised to consult the Final Report to be published in 1995. TAB H PART 1D xxx DRAFT x FOR DISCUSSION PURPOSES xxx MEMORANDUM TO: Members of the Advisory Committee on Human Radiation Experiments FROM: Advisory Committee Staff DATE: November 9, 1994 RE: Environmental Dose Reconstruction One of the ethics issues for intentional environmental releases of radioactivity is the risk to people. Documents and data about the release and about other human and environmental factors (atmospheric conditions, eating habits) allow experts to estimate radiation doses and the uncertainties in those doses for members of the public. John Till will be giving a presentation to the Advisory Committee, and a background paper is attached. Attachment: Scientists Use Dosimetry To Estimate Hanford Radiation Doses, Fact Sheet 7, Technical Steering Panel, Hanford Environmental Dose Reconstruction Project, July 1990.