We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

To contact the EPA for questions about radiation risk assessment and/or this calculator, please Contact Us.

page title goes here Risk Assessment

A new Peak PRG output option has been added. Please see the What's New page for details.

Peak Risk Interval PRG

Hover over any form section for instructions about the individual selection and requirements.


Select Target Risk


Select Scenario


Select Media:

Select Site Info Type


Select Risk Output


Select Units


Select Individual Isotopes


Complete List

Selected

Common Isotopes

Or Select All


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