Summary Report for the Workshop on Issues Associated with Dermal Exposure and Uptake

The EPA Risk Assessment Forum organized a workshop on December 10 and 11, 1998, to address generic technical issues related to dermal exposure and risk assessment that were raised during the February 1998 peer review of the Superfund Dermal Guidance (SDG). The issues were organized into four categories: 1) dermal exposure to contaminants in water, 2) dermal exposure to contaminants in soil, 3) adjustment of toxicity factors to reflect absorbed dose, and 4) risk characterization and uncertainty analysis for dermal assessments. Questions within each category were presented to help structure and guide the workshop discussion. In addressing these questions, workshop participants were asked to consider: what do we know today that can be applied to answering the question or providing additional guidance on the topic; what short-term studies could be conducted to answer the question or provide additional guidance; and what longer-term research may be needed to answer the question or provide additional guidance. This report summarizes the discussions at the workshop.

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