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Suggested Citation:"THE CHARGE TO THE SUBCOMMITTEE." National Research Council. 2004. Tenth Interim Report of the Subcommittee on Acute Exposure Guideline Levels. Washington, DC: The National Academies Press. doi: 10.17226/10894.
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TENTH INTERIM REPORT OF THE SUBCOMMITTEE ON ACUTE EXPOSURE GUIDELINE LEVELS 1 Tenth Interim Report of the Subcommittee on Acute Exposure Guideline Levels BACKGROUND In 1991, the U.S. Environmental Protection Agency (EPA) and the Agency for Toxic Substances and Disease Registry (ATSDR) asked the National Research Council (NRC) to provide technical guidance for establishing community emergency exposure levels (CEELs) for extremely hazardous substances (EHSs) pursuant to the Superfund Amendments and Reauthorization Act of 1986. In response to that request, a subcommittee of the NRC Committee on Toxicology (COT) prepared a report titled Guidelines for Developing Community Emergency Exposure Levels for Hazardous Substances (NRC 1993). That report provides step-by- step guidance for the derivation of CEELs for EHSs. In 1995, EPA, several other federal and state agencies, and several private organizations convened an advisory committee—the National Advisory Committee on Acute Exposure Guideline Levels (AEGLs) for Hazardous Substances (referred to as the NAC)—to develop, review, and approve AEGLs (similar to CEELs) for up to 400 EHSs. AEGLs developed by the NAC have a broad array of potential applications for federal, state, and local governments and for the private sector. AEGLs are needed for prevention and emergency response planning for potential releases of EHSs either unintentionally from accidents or as a result of terrorist activities. THE CHARGE TO THE SUBCOMMITTEE The NRC convened the Subcommittee on Acute Exposure Guideline Levels to review the AEGL documents approved by the NAC. The subcommittee members were selected for their expertise in toxicology, pharmacology, medicine, industrial hygiene, biostatistics, risk assessment, and risk communication. The charge to the subcommittee is to (1) review AEGLs developed by the NAC for scientific validity, completeness, and conformance to the NRC (1993) guidelines report, (2) identify priorities for research to fill data gaps, and (3) identify guidance issues that may require modification or further development based on the toxicological database for the chemicals reviewed. This interim report presents the subcommittee's comments concerning the NAC's draft AEGL documents for 17 chemicals: hydrazine, ethylene oxide, propylene oxide, iron pentacarbonyl, nickel carbonyl, phosphine, boron trichloride, chlorine trifluoride, dichlorodimethyl silane, trichloromethyl silane, ethyleneimine, propylenimine, allyl alcohol, aniline, arsine, monomethylhydrazine, and dimethylhydrazine.

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