Draft Toxicological Review of n-Butanol: In Support of Summary Information on the Integrated Risk Information System (IRIS)

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EPA announced a 60-day public comment period and a listening session on August 31, 2011 (76 FR 54227) for the external review draft human health assessment titled, "Toxicological Review of n-Butanol: In Support of Summary Information on the Integrated Risk Information System (IRIS)" (EPA/635/R-11/081A). EPA is extending the public comment period one week because of a one-week delay in the release of the Toxicological Review to the public. The draft assessment was prepared by the National Center for Environmental Assessment (NCEA) within the EPA Office of Research and Development (ORD). EPA is releasing this draft assessment solely for the purpose of pre- dissemination peer review under applicable information quality guidelines. This draft assessment has not been formally disseminated by EPA. It does not represent and should not be construed to represent any Agency policy or determination. After public review and comment, an EPA contractor will convene an expert panel for independent external peer review of this draft assessment. The public comment period and external peer review meeting are separate processes that provide opportunities for all interested parties to comment on the a