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Sources and Levels of PCBs in Indoor Environments
Citation:
Thomas, K. Sources and Levels of PCBs in Indoor Environments. Joint EPA Clu-In Training and NIEHS Superfund Research Program National Webinar, Research Triangle Park, NC, April 21, 2014.
Impact/Purpose:
The National Exposure Research Laboratory (NERL) Human Exposure and Atmospheric Sciences Division (HEASD) conducts research in support of EPA mission to protect human health and the environment. HEASD research program supports Goal 1 (Clean Air) and Goal 4 (Healthy People) of EPA strategic plan. More specifically, our division conducts research to characterize the movement of pollutants from the source to contact with humans. Our multidisciplinary research program produces Methods, Measurements, and Models to identify relationships between and characterize processes that link source emissions, environmental concentrations, human exposures, and target-tissue dose. The impact of these tools is improved regulatory programs and policies for EPA.
Description:
Source assessment• Primary sources – caulk and light ballasts (6 schools)• Secondary sources – paint, tile, furnishings, etc. (3 schools)• Emission rate estimation Environmental levels (6 schools except dust)• Air, surface, dust, soil PCB concentrations• Within and between-school variability Congener and homolog measurements for one school Exposure modeling• Estimate PCB exposure distributions for different age groups• Assess relative importance of different exposure pathways