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[Federal Register Volume 76, Number 180 (Friday, September 16, 2011)]
[Notices]
[Page 57739]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-23818]

[[Page 57739]]

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ENVIRONMENTAL PROTECTION AGENCY

[FRL-9466-4; Docket ID No. EPA-HQ-ORD-2011-0390]

Draft Toxicological Review of 1,4-Dioxane: In Support of Summary 
Information on the Integrated Risk Information System (IRIS)

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice of Public Comment Period; extension.

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SUMMARY: EPA announced a 60-day public comment period on August 31, 
2011 (76 FR 54225) for the external review draft human health 
assessment titled, ``Toxicological Review of 1,4-Dioxane: In Support of 
Summary Information on the Integrated Risk Information System (IRIS)'' 
(EPA/635/R-11/003). New inhalation studies regarding the toxicity of 
1,4-dioxane are now included in the 1,4-dioxane assessment. EPA is 
extending the public comment period because of a 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 assessment. The external 
peer review meeting will be scheduled at a later date and announced in 
the Federal Register. Public comments submitted during the public 
comment period will be provided to the external peer reviewers before 
the panel meeting and considered by EPA in the disposition of public 
comments. Public comments received after the public comment period 
closes will not be submitted to the external peer reviewers and will 
only be considered by EPA if time permits.

DATES: The public comment period will be extended to end November 15, 
2011. Comments should be in writing and must be received by EPA by 
November 15, 2011.

ADDRESSES: The draft ``Toxicological Review of 1,4-Dioxane: In Support 
of Summary Information on the Integrated Risk Information System 
(IRIS)'' is available primarily via the Internet on the NCEA home page 
under the Recent Additions and Publications menus at http://www.epa.gov/ncea. A limited number of paper copies are available from 
the Information Management Team (Address: Information Management Team, 
National Center for Environmental Assessment, (Mail Code: 8601P), U.S. 
Environmental Protection Agency, 1200 Pennsylvania Avenue, NW., 
Washington, DC 20460; telephone: 703-347-8561; facsimile: 703-347-
8691). If you request a paper copy, please provide your name, mailing 
address, and the draft assessment title.
    Comments may be submitted electronically via http://www.regulations.gov, by e-mail, by mail, by facsimile, or by hand 
delivery/courier. Please follow the detailed instructions provided in 
the SUPPLEMENTARY INFORMATION section of the previous notice (76 FR 
54225).
    Additional Information: For information on the docket, http://www.regulations.gov, or the public comment period, please contact the 
Office of Environmental Information (OEI) Docket (Mail Code: 2822T), 
U.S. Environmental Protection Agency, 1200 Pennsylvania Ave., NW., 
Washington, DC 20460; telephone: 202-566-1752; facsimile: 202-566-1753; 
or e-mail: ORD.Docket@epa.gov.
    For information on the draft assessment, please contact Patricia 
Gillespie, National Center for Environmental Assessment [Mail Code: B-
243-01], U.S. Environmental Protection Agency, National Center for 
Environmental Assessment, Office of Research and Development, U.S. 
Environmental Protection Agency, Research Triangle Park, NC 27711; 
telephone: 919-541-1964; facsimile: 919-541-2985; or e-mail: FRN_Questions@epa.gov.

    Dated: September 9, 2011.
Darrell A. Winner,
Acting Director, National Center for Environmental Assessment.
[FR Doc. 2011-23818 Filed 9-15-11; 8:45 am]
BILLING CODE 6560-50-P
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