What is a baseline risk assessment?
The NFSS baseline risk assessment evaluates current and potential future risks to human health and the environment from site contamination to provide a decision-making tool for use in determining the need for further investigation or site cleanup based upon present site conditions. The assessment attempted to model the potential risks to the only current site occupant, i.e., the site maintenance workers. In addition, risks to other hypothetical receptors who may come onto the site now or in the future were also modeled. The modeled exposures for these receptors are based on EPA-approved models and parameters such that a reasonable estimate of the risk to these receptors can be calculated. The mathematical models were based on guidance documents prepared by the regulatory agencies. These models are recommended as a reasonable means to provide a conservative estimate of the effect of chemicals radionuclides of potential concern on human receptors.
