Multimedia Pathway Modeling
SC&A experts provide complete multimedia pathway modeling
of the fate and effects of radioactive material released to and
in the environment, including:
- Routine, episodic, and accidental radioactive releases
to air, surface water, and ground water
- Dispersion, dilution, deposition, and reconcentration
of radionuclides released to air and water
- The movement and reconcentration of radionuclides through
food chains
- Individual and population radiation doses and health risks
- Impacts on plants and animals
- Radionuclide transport and fate in complex systems, such
as fractured media and Karst aquifers, and facilitated transport,
such as radionuclides in the presence of colloids and complexing
agents
Sample Projects
- For the U.S. Environmental Protection Agency’s
(EPA’s) Office of Emergency and Remedial Response,
SC&A improved population risk assessments, revised parts
of the Risk Assessment Guidance for Superfund, and wrote
Soil Screening Guidance: Technical Background Document
(EPA/540/R-95/128, May 1996).
- For the U.S. Nuclear Regulatory Commission (NRC), SC&A wrote
NUREG-1640, which modeled the fate and effects of the clearance of
recycled radionuclides contained in steel and concrete.
- For the EPA, SC&A modeled the fate and effects of radionuclides
released to the atmosphere and wrote
Risk Assessments Methodology, Environmental Impact Statement,
NESHAPS for Radionuclides, Background Information Document,
Volume 1 (EPA/520/1-89-005, September 1989).
- For a joint program sponsored by the EPA, NRC, and
U.S. Department of Energy, SC&A wrote guidance documents on
multimedia model selection and implementation, including
Environmental Pathway Models—Ground-Water Modeling in Support of
Remedial Decision-Making at Sites Contaminated with Radioactive
Material (EPA 402-R-93-009, March 1993).
