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EPA's Human Exposure Measurement Program

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Abstract: The goal of NERL's Exposure Research Program is to improve the scientific basis for conducting human exposure assessments that are part of the EPA's risk assessment, risk management and compliance process. Overall, we aim to address aggregate and cumulative exposures that pose the greatest risks to the American public. The program addresses exposures for the general population and susceptible subpopulations including children, asthmatics, and the elderly. A systemic approach is taken to planning and implementing our research. First, the highest priority regulatory needs for exposure data are identified. An iterative process between methods development, measurements, and modeling is then used to develop and conduct the research. Preliminary models are developed to identify key data gaps and uncertainties. Specific laboratory or field measurement studies are designed to:

1. Identify those chemicals, pathways, and activities that represent the highest potential exposures;

2. Systematically identify the data (exposure factors) required to estimate exposure by each route;

3. Develop approaches for generating the required data; and

4. Apply these approaches in field studies to develop data on exposures and the relevant exposure factors.

Currently, exposure measurement studies are addressing two critical areas: children's aggregate exposures to pesticides and inhalation exposure to PM, PM constituents, and air toxics. Outputs of current studies will be described. Details of new studies in both areas will also be provided.

This is an abstract of a proposed presentation and does not necessarily reflect the United States Environmental Protection Agency (EPA) policy. The actual presentation has not been peer reviewed by EPA. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.

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Citation:Sheldon, L. S. EPA's Human Exposure Measurement Program. Presented at American Chemistry Council Long-Range Research Initiative Annual Science Meeting, Herndon, VA, June 24-25, 2003.
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Contact: Liz Hope - (919) 541-2785 or hope.elizabeth@epa.gov
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Division: Human Exposure & Atmospheric Sciences Division
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Branch: Immediate Office
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Product Type: Abstrct/Oral
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Presented: 06/24/2003
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Last Updated on Monday, October 22, 2007
URL: http://cfpub.epa.gov