Categorized Under: Environment
ICF conducted a quantitative human exposure and health risk assessment in support of a 2008 review of the National Ambient Air Quality Standard (NAAQS) for lead.
The effort involved environmental fate and transport modeling, the analysis of complex environmental monitoring data, estimation of exposure concentrations, the use of biokinetic models to estimate children’s blood lead responses to specific exposure scenarios, and the application of exposure-response functions to relate changes in children’s blood lead concentrations to changes in IQ for the different scenarios. The results of ICF's risk assessment were used to inform and support EPA's final NAAQS rule for lead, which resulted in a 90-percent reduction from the previous standard.
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