The main exposure pathways for atmospheric releases of radionuclides include inhalation, external exposure, ingestion of food items (e.g., garden crops, milk and meat), and incidental ingestion of soil (e.g., by individuals working in dusty environments).

Exposure scenarios are defined for representative individuals in the population (i.e., hypothetical individuals chosen to provide reasonably realistic representations of exposures of the public). For the purpose of analyzing the effects of emissions from the Idaho Chemical Processing Plant (ICPP), six basic exposure scenarios were defined. The scenarios are based on site-specific information collected from detailed documents about the INEL site and surrounding regions, from individuals living in the area, and from members of the Idaho Health Effects Subcommittee (IHES). The basic scenarios include scenarios for exposure beyond the INEL site boundary or exposure at onsite locations. The off-site scenarios include estimation of doses for: a) a rural resident, b) an urban residents, and c) a migrant farm worker. The on-site exposure scenarios include: a) an on-site rancher, b) a hunter, and c) a visitor to the INEL site. These exposure scenarios are discussed at length in the following report:

Exposure Scenarios Report

Principal authors:
A. Iulian Apostoaei, SENES Oak Ridge, Inc.
Elizabeth W. Reed, SENES Oak Ridge, Inc.