Document ID: EPA-HQ-OPPT-2004-0128-0001
Agency: epa
Document Type: Notice
Title: National Advisory Committee for Acute Exposure Guideline Levels (AEGLs) for Hazardous Substances; Proposed AEGL Values; Notice of Availability
Posted Date: 2006-10-12T20:44:30Z

[Federal Register: October 12, 2006 (Volume 71, Number 197)]
[Notices]               
[Page 60141-60143]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr12oc06-44]                         

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ENVIRONMENTAL PROTECTION AGENCY

[EPA-HQ-OPPT-2004-0128; FRL-8095-1]

 
National Advisory Committee for Acute Exposure Guideline Levels 
(AEGLs) for Hazardous Substances; Proposed AEGL Values; Notice of 
Availability

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice.

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SUMMARY: The National Advisory Committee for Acute Exposure Guideline 
Levels for Hazardous Substances (NAC/AEGL Committee) is developing 
AEGLs on an ongoing basis to provide Federal, State, and local agencies 
with information on short-term exposures to hazardous chemicals. This 
notice provides a list of 46 proposed AEGL chemicals that are available 
for public review and comment. Comments are welcome on both the AEGL 
values and the technical support documents placed in the docket.

DATES: Comments must be received on or before November 13, 2006.

ADDRESSES: Submit your comments, identified by docket identification 
(ID) number EPA-HQ-OPPT-2004-0128, by one of the following methods:
     Federal eRulemaking Portal: http://www.regulations.gov. 

Follow the on-line instructions for submitting comments.
     Mail: Document Control Office (7407M), Office of Pollution 
Prevention and Toxics (OPPT), Environmental Protection Agency, 1200 
Pennsylvania Ave., NW., Washington, DC 20460-0001.
     Hand Delivery: OPPT Document Control Office (DCO), EPA 
East, Rm. 6428, 1201 Constitution Ave., NW., Washington, DC. Attention: 
Docket ID Number EPA-HQ-OPPT-2004-0128. The DCO is open from 8 a.m. to 
4 p.m., Monday through Friday, excluding legal holidays. The telephone 
number for the DCO is (202) 564-8930. Such deliveries are only accepted 
during the DCO's normal hours of operation, and special arrangements 
should be made for deliveries of boxed information.
     Instructions: Direct your comments to docket ID number EPA-HQ-
OPPT-2004-0128. EPA's policy is that all comments received will be 
included in the docket without change and may be made available on-line 
at http://www.regulations.gov, including any personal information 

provided, unless the comment includes information claimed to be 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Do not submit information that you 
consider to be CBI or otherwise protected through regulations.gov or e-
mail. The regulations.gov Web site is an ``anonymous access'' system, 
which means EPA will not know your identity or contact information 
unless you provide it in the body of your comment. If you send an e-
mail comment directly to EPA without going through regulations.gov, 
your e-mail address will be automatically captured and included as part 
of the comment that is placed in the docket and made available on the 
Internet. If you submit an electronic comment, EPA recommends that you 
include your name and other contact information in the body of your 
comment and with any disk or CD-ROM you submit. If EPA cannot read your 
comment due to technical difficulties and cannot contact you for 
clarification, EPA may not be able to consider your comment. Electronic 
files should avoid the use of special characters, any form of 
encryption, and be free of any defects or viruses. For additional 
information about EPA's public docket, visit the EPA Docket Center 
homepage at http://www.epa.gov/epahome/dockets.htm.

    Docket: All documents in the docket are listed in the 
regulations.gov index. Although listed in the index, some information 
is not publicly available, e.g., CBI or other information whose 
disclosure is restricted by statute. Certain other material, such as 
copyrighted material, will be publicly available only in hard copy. 
Publicly available docket materials are available electronically at 
http://www.regulations.gov, or, if only available in hard copy, at the 

OPPT Docket, EPA Docket Center (EPA/DC). The EPA/DC suffered structural 
damage due to flooding in June 2006. Although the EPA/DC is continuing 
operations, there will be temporary changes to the EPA/DC during the 
clean-up. The EPA/DC Public Reading Room, which was temporarily closed 
due to flooding, has been relocated in the EPA Headquarters Library, 
Infoterra Room (Room Number 3334) in EPA West, located at 1301 
Constitution Ave., NW., Washington, DC. The EPA/DC Public Reading Room

[[Page 60142]]

is open from 8:30 a.m. to 4:30 p.m., Monday through Friday, excluding 
legal holidays. The telephone number of the EPA/DC Public Reading Room 
is (202) 566-1744, and the telephone number for the OPPT Docket is 
(202) 566-0280. EPA visitors are required to show photographic 
identification and sign the EPA visitor log. Visitors to the EPA/DC 
Public Reading Room will be provided with an EPA/DC badge that must be 
visible at all times while in the EPA Building and returned to the 
guard upon departure. In addition, security personnel will escort 
visitors to and from the new EPA/DC Public Reading Room location. Up-
to-date information about the EPA/DC is on the EPA Web site at http://www.epa.gov/epahome/dockets.htm
.

FOR FURTHER INFORMATION CONTACT: For general information contact: Colby 
Lintner, Regulatory Coordinator, Environmental Assistance Division 
(7408M), Office of Pollution Prevention and Toxics, Environmental 
Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460-
0001; telephone number: (202) 554-1404; e-mail address: 
TSCA-Hotline@epa.gov.

    For technical information contact: Paul S. Tobin, Designated 
Federal Officer (DFO), Office of Pollution Prevention and Toxics 
(7406M), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., 
Washington, DC 20460-0001; telephone number: (202) 564-8557; e-mail 
address: tobin.paul@epa.gov.

SUPPLEMENTARY INFORMATION:

I. General Information

A. Does this Action Apply to Me?

    This action is directed to the general public to provide an 
opportunity for review and comment on proposed AEGL values and their 
supporting scientific rationale. This action may be of particular 
interest to anyone who may be affected if the AEGL values are adopted 
by government agencies for emergency planning, prevention, or response 
programs, such as EPAs Risk Management Program under the Clean Air Act 
and Amendments Section 112r. It is possible that other Federal agencies 
besides EPA, as well as State and local agencies and private 
organizations, may adopt the AEGL values for their programs. As such, 
the Agency has not attempted to describe all the specific entities that 
may be affected by this action. If you have any questions regarding the 
applicability of this action to a particular entity, consult the DFO 
listed under FOR FURTHER INFORMATION CONTACT.

B. What Should I Consider as I Prepare My Comments for EPA?

    1. Submitting CBI. Do not submit this information to EPA through 
regulations.gov or e-mail. Clearly mark the part or all of the 
information that you claim to be CBI. For CBI information in a disk or 
CD ROM that you mail to EPA, mark the outside of the disk or CD ROM 
that you mail to EPA, mark the outside of the disk or CD ROM as CBI and 
then identify electronically within the disk or CD ROM the specific 
information that is claimed as CBI. In addition to one complete version 
of the comment that includes information claimed as CBI, a copy of the 
comment that does not contain the information claimed as CBI must be 
submitted for inclusion in the public docket. Information so marked 
will not be disclosed except in accordance with procedures set forth in 
40 CFR part 2.
    2. Tips for preparing your comments. When submitting comments, 
remember to:
    i. Identify the document by docket ID number and other identifying 
information (subject heading, Federal Register date and page number).
    ii. Follow directions. The Agency may ask you to respond to 
specific questions or organize comments by referencing a Code of 
Federal Regulations (CFR) part or section number.
    iii. Explain why you agree or disagree; suggest alternatives and 
substitute language for your requested changes.
    iv. Describe any assumptions and provide any technical information 
and/or data that you used.
    v. If you estimate potential costs or burdens, explain how you 
arrived at your estimate in sufficient detail to allow for it to be 
reproduced.
    vi. Provide specific examples to illustrate your concerns and 
suggest alternatives.
    vii. Explain your views as clearly as possible, avoiding the use of 
profanity or personal threats.
    viii. Make sure to submit your comments by the comment period 
deadline identified.

II. What Action is the Agency Taking?

    EPAs Office of Prevention, Pesticides and Toxic Substances (OPPTS) 
provided notice on October 31, 1995 (60 FR 55376) (FRL-4987-3) of the 
establishment of the NAC/AEGL Committee with the stated charter 
objective as ``the efficient and effective development of AEGLs and the 
preparation of supplementary qualitative information on the hazardous 
substances for Federal, State, and Local agencies and organizations in 
the private sector concerned with [chemical] emergency planning, 
prevention, and response.'' The NAC/AEGL Committee is a discretionary 
Federal advisory committee formed with the intent to develop AEGLs for 
chemicals through the combined efforts of stakeholder members from both 
the public and private sectors in a cost-effective approach that avoids 
duplication of efforts and provides uniform values, while employing the 
most scientifically sound methods available.
    This action provides notice of availability, for public review and 
comment, of proposed AEGL values and underlying supporting documents 
for 46 hazardous substances. These values represent the ninth set of 
exposure levels proposed and published by the NAC/AEGL Committee. EPA 
published the first ``proposed'' AEGLs for 12 chemicals from the 
initial priority list in the Federal Register of October 30, 1997 (62 
FR 58840-58851) (FRL-5737-3); for 10 chemicals in the Federal Register 
of March 15, 2000 (65 FR 14186-14197) (FRL-6492-4); for 14 chemicals in 
the Federal Register of June 23, 2000 (65 FR 39263-39277 ) (FRL-6591-
2); for 7 chemicals in the Federal Register of December 13, 2000 (65 FR 
77866-77874) (FRL-6752-5); for 18 chemicals in the Federal Register of 
May 2, 2001 (66 FR 21940-21964) (FRL-6776-3); for 8 chemicals in the 
Federal Register of February 15, 2002 (67 FR 7164-7176) (FRL-6815-8); 
for 10 chemicals in the Federal Register of July 18, 2003 (68 FR 42710-
42726) (FRL-7189-8); and for 15 chemicals in the Federal Register of 
September 7, 2004 (69 FR 54144-54148) (FRL-7350-2) in order to provide 
an opportunity for public review and comment. Background information on 
the AEGL Program may be found in these earlier Federal Register 
notices, in regulations.gov, or on the AEGL Web site at http://www.epa.gov/oppt/aegl
.

------------------------------------------------------------------------
               Chemical name                           CAS No.
------------------------------------------------------------------------
Acetaldehyde                                75-07-0
------------------------------------------------------------------------
Acetonitrile                                75-05-8
------------------------------------------------------------------------
Benzene                                     71-43-2
------------------------------------------------------------------------
Benzonitrile                                100-47-0
------------------------------------------------------------------------
Bromine pentafluoride                       7789-30-2
------------------------------------------------------------------------
Bromine trifluoride                         7787-71-5
------------------------------------------------------------------------
Butadiene                                   106-99-0
------------------------------------------------------------------------
Butane                                      106-97-8
------------------------------------------------------------------------
Butyl acrylate                              141-32-2
------------------------------------------------------------------------

[[Page 60143]]

Chlorine pentafluoride                      13637-63-3
------------------------------------------------------------------------
Chloroacetaldehye                           107-20-0
------------------------------------------------------------------------
Chloroacetone                               78-95-5
------------------------------------------------------------------------
Chloroacetonitrile                          107-14-2
------------------------------------------------------------------------
Chloroacetyl chloride                       79-04-9
------------------------------------------------------------------------
Cumene                                      98-82-8
------------------------------------------------------------------------
Dichloroacetyl chloride                     79-36-7
------------------------------------------------------------------------
Dimethyl sulfate                            77-78-1
------------------------------------------------------------------------
Disulfur dichloride                         10025-67-9
------------------------------------------------------------------------
Ethyl acrylate                              140-88-5
------------------------------------------------------------------------
Ethyl mercaptan                             75-08-1
------------------------------------------------------------------------
Formaldehyde                                50-00-0
------------------------------------------------------------------------
Hexane                                      110-54-3
------------------------------------------------------------------------
Hydrogen bromide                            10035-10-6
------------------------------------------------------------------------
Hydrogen iodide                             10034-85-2
------------------------------------------------------------------------
Hydrogen selenide                           7783-07-5
------------------------------------------------------------------------
Isobutyronitrile                            78-82-0
------------------------------------------------------------------------
Lewisite L-1                                541-25-3
------------------------------------------------------------------------
Lewisite L-2                                40334-69-8
------------------------------------------------------------------------
Lewisite L-3                                40334-70-1
------------------------------------------------------------------------
Malononitrile                               109-77-3
------------------------------------------------------------------------
Methacrylic acid                            79-41-4
------------------------------------------------------------------------
Methacrylonitrile                           126-98-7
------------------------------------------------------------------------
Methyl bromide                              74-83-9
------------------------------------------------------------------------
Methyl chloride                             74-87-3
------------------------------------------------------------------------
Methyl methacrylate                         80-62-6
------------------------------------------------------------------------
Methylene chloride                          75-09-2
------------------------------------------------------------------------
Oleum                                       8014-95-7
------------------------------------------------------------------------
Piperidine                                  110-89-4
------------------------------------------------------------------------
Propane                                     74-98-6
------------------------------------------------------------------------
Propionaldehyde                             123-38-6
------------------------------------------------------------------------
Proprionitrile                              107-12-0
------------------------------------------------------------------------
Styrene                                     110-42-5
------------------------------------------------------------------------
Sulfur trioxide                             7446-11-9
------------------------------------------------------------------------
Sulfuric acid                               7664-93-9
------------------------------------------------------------------------
Titanium tetrachloride                      7550-45-0
------------------------------------------------------------------------
Vinyl chloride                              75-01-4
------------------------------------------------------------------------

List of Subjects

    Environmental protection, Acute Exposure Guideline Levels (AEGLs), 
Hazardous substances.

    Dated: October 5, 2006.
Charles M. Auer,
Director, Office of Pollution Prevention and Toxics.
[FR Doc. E6-16908 Filed 10-11-06; 8:45 am]

BILLING CODE 6560-50-S