Impact/Purpose:

The Uncertainty Report will provide regulators and the regulated community with a better understanding of the errors associated with the risk coefficient parameter and a better appreciation for the precision of risk estimates.

Description:

EPA has published excess cancer risk coefficients for the US population in Federal Guidance Report 13 (FGR 13). FGR 13 gives separate risk coefficients for food ingestion, water ingestion, inhalation, and external exposure for each of over 800 radionuclides. Some information on the sources of uncertainty for these risk estimates is presented in FGR 13. The Uncertainty Report described here is an effort to provide a quantitative approach for estimating the uncertainty for these radionuclides.

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