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Derivation of Soil Screening Guidelines for Gross Alpha/Beta Radioactivity for United States Air Force Deployment Sites

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Technical Report

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Uniformed Services University Of The Health Sciences Bethesda United States

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The US Air Force USAF has created radiation dose levels to indicate how much environmental exposure to ionizing radiation is necessary to warrant further individual dose investigation as well as decide what medical surveillance is necessary. However, gross alpha and beta screening limits for radionuclides in soil that would coincide with these dose levels have not been developed. USACHPPM United States Army Center for Health Promotion and Preventive Medicine has received soil samples from worldwide locations to be analyzed for radiation safety purposes. The concentrations of radionuclides in these soils can be used to estimate the dose so that further health assessments can be made. A dose rate can be related to the concentration of specific radionuclides in soil by using the computer program RESRAD. These soil concentrations can be related to gross alpha and beta limits based on their individual decay emissions. The objective of this study is to develop gross alpha and beta screening levels that, if exceeded, indicate a potential dose to deployed Airmen that is above a specified total dose limit. The results of this study are to be used to analyze isolated areas or small batches of samples.

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