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Radiological Dispersal Device (RDD) Briefing Products provide guidance on the potential need for short-term evacuation/sheltering and/or longer-term relocation of the general population, as well as addressing emergency worker safety and possible contamination of agricultural crops. The contours shown reflect the dose levels at which actions should be considered according to U.S. EPA/DHS Protective Action Guides.
Protective Action Guide (PAGs) levels are the projected doses at which specific protective actions to reduce or avoid that dose are warranted. PAG dose thresholds are based on federal EPA/DHS guideline
Note: Exposure calculations assume that individuals remain outdoors in the same location throughout the exposure period.
Manual of Protective Action Guides and Protective Actions for Nuclear Incidents (EPA 400-R-92-001, May 1992).
"Protective Action Guides for Radiological Dispersal Device (RDD) and Improvised Nuclear Device (IND) Incidents", (Federal Register, Vol. 71, No. 1, Jan. 3, 2006, p. 174).