[Federal Register Volume 73, Number 170 (Tuesday, September 2, 2008)]
[Notices]
[Pages 51297-51298]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E8-20240]
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ENVIRONMENTAL PROTECTION AGENCY
[EPA-HQ-OAR-2006-0922; FRL-8704-1]
Draft Risk and Exposure Assessment Report for Nitrogen Dioxide
(NOX)
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice of draft report for public review and comment.
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SUMMARY: On or about August 12, 2008, the Office of Air Quality
Planning and Standards (OAQPS) of EPA is making available for public
review and comment a draft document titled, Risk and Exposure
Assessment to Support the Review of the NO2 Primary National
Ambient Air Quality Standard: Second Draft. This draft document has two
purposes: To convey the approaches taken to characterize exposures and
risks associated with ambient NO2, and to present the
results of these analyses.
DATES: Comments on the above reports must be received on or before
September 26, 2008.
ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2006-0922, by one of the following methods:
www.regulations.gov: Follow the on-line instructions for
submitting comments.
E-mail: Comments may be sent by electronic mail (e-mail)
to [email protected], Attention Docket ID No. EPA-HQ-OAR-2006-
0922.
Fax: Fax your comments to 202-566-9744, Attention Docket
ID No. EPA-HQ-OAR-2006-0922.
Mail: Send your comments to: Air and Radiation Docket and
Information Center, Environmental Protection Agency, Mailcode: 2822T,
1200 Pennsylvania Ave., NW., Washington, DC 20460, Attention Docket ID
No. EPA-HQ-OAR-2006-0922.
Hand Delivery or Courier: Deliver your comments to: EPA
Docket Center, 1301 Constitution Ave., NW., Room 3334, Washington, DC.
Such deliveries are only accepted during the Docket's normal hours of
operation, and special arrangements should be made for deliveries of
boxed information.
Instructions: Direct your comments to Docket ID No. EPA-HQ-OAR-
2006-0922. The EPA's policy is that all comments received will be
included in the public docket without change and may be made available
online at 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 www.regulations.gov
or e-mail. The www.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
www.regulations.gov your e-mail address will be automatically captured
and included as part of the comment that is placed in the public docket
and made available on the Internet. If you submit an electronic
[[Page 51298]]
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 home page at http://www.epa.gov/epahome/dockets.htm.
Docket: All documents in the docket are listed in the
www.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 either electronically
in www.regulations.gov or in hard copy at the Air Docket in the EPA
Docket Center, EPA West, Room 3334, 1301 Constitution Ave., NW.,
Washington, DC. This Docket Facility is open from 8:30 a.m. to 4:30
p.m. Monday through Friday, excluding legal holidays. The Docket
telephone number is 202-566-1742; fax 202-566-9744.
FOR FURTHER INFORMATION CONTACT: Dr. Scott Jenkins, Office of Air
Quality Planning and Standards (Mailcode C504-06), U.S. Environmental
Protection Agency, Research Triangle Park, NC 27711; e-mail:
[email protected]; telephone: 919-541-1167; fax: 919-541-0237.
General Information
A. What Should I Consider as I Prepare My Comments for EPA?
1. Submitting CBI. Do not submit this information to EPA through
www.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 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:
Identify the rulemaking by docket number and other
identifying information (subject heading, Federal Register date and
page number).
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.
Explain why you agree or disagree; suggest alternatives
and substitute language for your requested changes.
Describe any assumptions and provide any technical
information and/or data that you used.
If you estimate potential costs or burdens, explain how
you arrived at your estimate in sufficient detail to allow for it to be
reproduced.
Provide specific examples to illustrate your concerns, and
suggest alternatives.
Explain your views as clearly as possible, avoiding the
use of profanity or personal threats.
Make sure to submit your comments by the comment period
deadline identified.
SUPPLEMENTARY INFORMATION: Under section 108(a) of the Clean Air Act
(CAA), the Administrator identifies and lists certain pollutants which
``cause or contribute to air pollution which may reasonably be
anticipated to endanger public health or welfare.'' The EPA then issues
air quality criteria for listed pollutants, which are commonly referred
to as ``criteria pollutants.'' The air quality criteria are to
``accurately reflect the latest scientific knowledge useful in
indicating the kind and extent of all identifiable effects on public
health or welfare which may be expected from the presence of [a]
pollutant in the ambient air, in varying quantities.'' Under section
109 of the CAA, EPA establishes national ambient air quality standards
(NAAQS) for each listed pollutant, with the NAAQS based on the air
quality criteria. Section 109(d) of the CAA requires periodic review
and, if appropriate, revision of existing air quality criteria. The
revised air quality criteria reflect advances in scientific knowledge
on the effects of the pollutant on public health or welfare. The EPA is
also required to periodically review and revise the NAAQS, if
appropriate, based on the revised criteria.
Air quality criteria have been established for the nitrogen oxides
(NOX) and NAAQS have been established for nitrogen dioxide
(NO2), an indicator for gaseous NOX. Presently,
EPA is in the process of reviewing the NAAQS for NO2. As
part of its review of the NAAQS, EPA is preparing an assessment of
exposures and health risks associated with ambient NO2. A
draft plan describing the proposed approaches to assessing exposures
and risks is described in the draft document, Nitrogen Dioxide Health
Assessment Plan: Scope and Methods for Exposure and Risk Assessment.
This document was released for public review and comment in September
2007 and was the subject of a consultation with the Clean Air
Scientific Advisory Committee (CASAC) on October 24 and 25, 2007.
Comments received from that consultation were considered in developing
the document titled, Risk and Exposure Assessment to Support the Review
of the NO2 Primary National Ambient Air Quality Standard: First Draft,
which was released for public review and comment in April 2008. This
document was the subject of a CASAC review on May 1 and 2, 2008.
Comments received from that review have been considered in developing
the document titled, Risk and Exposure Assessment to Support the Review
of the NO2 Primary National Ambient Air Quality Standard: Second Draft,
which is being released at this time.
This draft document is available online at: http://www.epa.gov/ttn/naaqs/standards/nox/s_nox_cr_rea.html. It has two primary purposes:
To convey the approaches taken to characterize exposures and risks
associated with ambient NO2, and to present the results of
these analyses. The EPA has solicited advice and recommendations from
the CASAC by means of a review of the draft document at a public
meeting to be held on September 9-10, 2008 in Research Triangle Park,
North Carolina. A separate Federal Register notice will provide
additional details about this meeting and the process for
participation. In preparing a final risk and exposure assessment
report, EPA will consider comments received from the CASAC and the
public at this upcoming meeting.
Dated: August 7, 2008.
Jennifer Edmonds,
Acting Director, Office of Air Quality Planning and Standards.
[FR Doc. E8-20240 Filed 8-29-08; 8:45 am]
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