Workshop on the Use of Available Data and Methods for Assessing the Ecological Risks of 2,3,7,8-Tetrachlorodibenzo-P-Dioxin to Aquatic Life and Associated Wildlife
Risk Assessment Forum
In April 1991, EPA initiated efforts to conduct a scientific reassessment of the human health and environmental risks of TCDD and related compounds. The first document to address ecological effects developed under this reassessment is the Interim Report on Data and Methods for the Assessment of 2,3,7,8-Tetrachlorodibenzo-p-Dioxin (TCDD) Risks to Aquatic Life and Associated Wildlife (U.S. EPA, 1993; Interim Report). The Interim Report compiles and critically reviews current scientific literature concerning toxicity and exposure data for TCDD ecological risks to aquatic and wildlife species. This report summarizes the discussions of a peer panel workshop that evaluated the utility of the information in the Interim Report for future ecological risk assessments. In addition to the Interim Report, workshop participants used a hypothetical scenario and the EPA report Framework for Ecological Risk Assessment to identify significant issues, discuss major uncertainties and recommend research needs for future assessments. The focus of the workshop was on the problem formulation or scoping phase of the ecological risk assessment process. Participants evaluated a "conceptual model" from the hypothetical scenario and provided comments and suggestions on the transport, fate, and ecological effects of TCDD and related compounds.
- Interim Report on Data Methods for Assessment of 2,3,7,8-Tetrachloro-P-Dioxin Risks to Aquatic Life and Associated Wildlife (PDF) (159 pp, 1MB, About PDF)
Note: a complete electronic version of this document that preserves its original appearance (such as in a pdf file format) is not currently available. However, a scanned version is available in image or text format from EPA's National Environmental Publications Information System. Paper copies may be ordered from the National Technical Information Service.
Note: this report is not EPA's reassessment of the health risks from dioxin. For more information about the dioxin reassessment, please visit EPA's Dioxin Reassessment pages.
US EPA. Workshop on the Use of Available Data and Methods for Assessing the Ecological Risks of 2,3,7,8-Tetrachlorodibenzo-P-Dioxin to Aquatic Life and Associated Wildlife. U.S. Environmental Protection Agency, Risk Assessment Forum, Washington, DC, EPA/630/R-94/002, 1994.