[Federal Register Volume 59, Number 179 (Friday, September 16, 1994)]
[Unknown Section]
[Page 0]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 94-22978]


[[Page Unknown]]

[Federal Register: September 16, 1994]


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ENVIRONMENTAL PROTECTION AGENCY
[FRL-5073-2]

 

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

AGENCY: U.S. Environmental Protection Agency (EPA).

ACTION: Notice of availability.

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SUMMARY: This notice announces the availability of a report entitled 
``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''. This report compiles discussions and 
recommendations from a 1993 workshop sponsored by EPA's Risk Assessment 
Forum. While the report addresses scientific issues related to 
ecological risk assessment, considerations of EPA policy on TCDD, 
revisions to EPA's ecological risk framework, formulating a complete 
TCDD risk assessment, and issues related to the health effects of TCDD 
were beyond the scope of the workshop and are not addressed.

ADDRESSES: To obtain a single copy of the report, interested parties 
should contact the ORD Publications Office, CERI, U.S. Environmental 
Protection Agency, 26 West Martin Luther King Drive, Cincinnati, OH 
45268, Tel: (513) 569-7562, FAX: (513) 569-7566. Please provide your 
name and mailing address, and request the document by the title and EPA 
number (EPA/630/R-94/002).

FOR FURTHER INFORMATION CONTACT:
Bill van der Schalie, U.S. Environmental Protection Agency (8101), 401 
M Street, SW., Washington, DC 20460, Telephone (202) 260-6743.

SUPPLEMENTARY INFORMATION: In March, 1993, EPA released 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 (Interim Report; EPA 600/R-93/055). This report compiled and 
critically reviewed current scientific literature concerning toxicity 
and exposure data for TCDD-related effects on aquatic and wildlife 
species. On September 15 and 16, 1993, EPA's Risk Assessment Forum 
sponsored a workshop to discuss use of data and methods in the Interim 
Report for ecological risk assessments. Workshop participants used both 
the Interim Report and the EPA report Framework for Ecological Risk 
Assessment (EPA/630/R-92/001) as starting materials. Workshop 
participants identified significant issues, discussed major 
uncertainties and recommended research needs for future assessments. In 
addition, workshop participants developed a ``conceptual model'' for a 
hypothetical scenario concerning TCDD effects on aquatic life and 
wildlife. This model, which includes comments and suggestions on the 
transport, fate, and effects of TCDD and related compounds, should be 
helpful to risk assessors planning to evaluate the ecological risks of 
TCDD. While the report addresses scientific issues related to 
ecological risk assessment, considerations of EPA policy on TCDD, 
revisions to EPA's ecological risk framework, formulating a complete 
TCDD risk assessment, and issues related to the health effects of TCDD 
were beyond the scope of the workshop and were not addressed.

    Dated: August 30, 1994.
Carl Gerber,
Acting Assistant Administrator for Research and Development.
[FR Doc. 94-22978 Filed 9-15-94; 8:45 am]
BILLING CODE 6560-50-M