Notice of Opportunity To Comment on Proposed Update of PM2.5 Data From T640/T640X PM Mass Monitors
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Issuing agencies
Abstract
The Environmental Protection Agency (EPA) is requesting comment on its plan to retroactively apply the approved modification of the Federal Equivalent Method (FEM) designation for the Teledyne Advanced Pollution Instrumentation Model T640 particulate matter (PM) mass monitor including the 640X option (hereafter T640 and T640X) to all of the PM with a diameter 2.5 micrometers or smaller (PM<INF>2.5</INF>) concentration data from the T640 and T640X monitors in the EPA's Air Quality System (AQS) that was reported prior to the modification. This update, which will be applied to the unmodified hourly PM<INF>2.5</INF> concentration data in AQS using collocated ambient temperature when available, is expected to result in a much higher number of PM<INF>2.5</INF> monitoring sites using the T640 and T640X FEM methods meeting the bias measurement quality objectives (MQOs). More details related to this update can be found in the document titled, "Proposal to Update PM<INF>2.5</INF> Data from T640/T640X PM Mass Monitors," located in the docket for this action and on the EPA's website at https://www.epa.gov/aqs/aqs-memos- monitoring-and-policy. Because of the importance of this air quality data for regulatory, scientific, and public use, the EPA is providing an opportunity for the public to comment on this update and the subsequent use of the updated data in regulatory and non-regulatory applications.
Full Text
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<title>Federal Register, Volume 89 Issue 32 (Thursday, February 15, 2024)</title>
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[Federal Register Volume 89, Number 32 (Thursday, February 15, 2024)]
[Notices]
[Pages 11831-11832]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-02935]
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ENVIRONMENTAL PROTECTION AGENCY
[EPA-HQ-OAR-2023-0642; FRL: 11720-01-OAR]
Notice of Opportunity To Comment on Proposed Update of PM2.5 Data
From T640/T640X PM Mass Monitors
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice.
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SUMMARY: The Environmental Protection Agency (EPA) is requesting
comment on its plan to retroactively apply the approved modification of
the Federal Equivalent Method (FEM) designation for the Teledyne
Advanced Pollution Instrumentation Model T640 particulate matter (PM)
mass monitor including the 640X option (hereafter T640 and T640X) to
all of the PM with a diameter 2.5 micrometers or smaller
(PM<INF>2.5</INF>) concentration data from the T640 and
[[Page 11832]]
T640X monitors in the EPA's Air Quality System (AQS) that was reported
prior to the modification. This update, which will be applied to the
unmodified hourly PM<INF>2.5</INF> concentration data in AQS using
collocated ambient temperature when available, is expected to result in
a much higher number of PM<INF>2.5</INF> monitoring sites using the
T640 and T640X FEM methods meeting the bias measurement quality
objectives (MQOs). More details related to this update can be found in
the document titled, ``Proposal to Update PM<INF>2.5</INF> Data from
T640/T640X PM Mass Monitors,'' located in the docket for this action
and on the EPA's website at <a href="https://www.epa.gov/aqs/aqs-memos-monitoring-and-policy">https://www.epa.gov/aqs/aqs-memos-monitoring-and-policy</a>. Because of the importance of this air quality
data for regulatory, scientific, and public use, the EPA is providing
an opportunity for the public to comment on this update and the
subsequent use of the updated data in regulatory and non-regulatory
applications.
DATES: Comments must be received on or before March 15, 2024.
ADDRESSES: You may send comments, identified by Docket ID No. EPA-HQ-
OAR-2023-0642, by any of the following methods:
<bullet> Federal eRulemaking Portal: <a href="https://www.regulations.gov/">https://www.regulations.gov/</a>
(our preferred method). Follow the online instructions for submitting
comments.
<bullet> Email: <a href="/cdn-cgi/l/email-protection#17763a7679733a653a7378747c72635772677639707861"><span class="__cf_email__" data-cfemail="6c0d410d0208411e4108030f0709182c091c0d420b031a">[email protected]</span></a>. Include Docket ID No. EPA-
HQ-OAR-2023-0642 in the subject line of the message.
<bullet> Mail: U.S. Environmental Protection Agency, EPA Docket
Center, OAQPS Docket, Mail Code 28221T, 1200 Pennsylvania Avenue NW,
Washington, DC 20460.
<bullet> Hand Delivery or Courier (by appointment only): EPA Docket
Center, WJC West Building, Room 3334, 1301 Constitution Avenue NW,
Washington, DC 20004. The Docket Center's hours of operations are 8:30
a.m.-4:30 p.m., Monday-Friday (except Federal Holidays).
Instructions: All submissions received must include the Docket ID
No. for this rulemaking. Comments received may be posted without change
to <a href="https://www.regulations.gov">https://www.regulations.gov</a>, including any personal information
provided. For detailed instructions on sending comments and additional
information on the rulemaking process, see the ``Public Participation''
heading of the SUPPLEMENTARY INFORMATION section of this document.
FOR FURTHER INFORMATION CONTACT: Brett Gantt, Office of Air Quality
Planning and Standards, Air Quality Assessment Division, Air Quality
Analysis Group (Mail Code: C304-04), Environmental Protection Agency,
109 T.W. Alexander Drive, Research Triangle Park, NC 27711; telephone
number: (919) 541-5274; email address <a href="/cdn-cgi/l/email-protection#5e393f302a2a703c2c3b2a2a1e3b2e3f70393128"><span class="__cf_email__" data-cfemail="4027212e34346e2232253434002530216e272f36">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
I. Proposed Data Correction
For detailed information regarding the retroactive correction of
air quality data and the use of corrected data, please see the document
titled, ``Proposal to Update PM<INF>2.5</INF> Data from T640/T640X PM
Mass Monitors,'' located in the docket for this action and on the EPA's
website at <a href="https://www.epa.gov/aqs/aqs-memos-monitoring-and-policy">https://www.epa.gov/aqs/aqs-memos-monitoring-and-policy</a>.
The EPA seeks comment on this document, including the proposed
timing for the data correction and how the EPA and other monitoring
authorities may use the data once corrected. The EPA will consider
comments received prior to making a final determination on the
retroactive application of the approved modification to the FEM for the
Teledyne T640/T640X monitoring data.
II. Public Participation
A. Written Comments
Submit your comments, identified by Docket ID No. EPA-HQ-OAR-2023-
0642, at <a href="https://www.regulations.gov">https://www.regulations.gov</a> (our preferred method), or using
one of the other methods identified in the ADDRESSES section. Once
submitted, comments cannot be edited or removed from the docket. The
EPA may publish any comment received to its public docket. Do not
submit to the docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> any information you
consider to be Confidential Business Information (CBI), Proprietary
Business Information (PBI), or other information whose disclosure is
restricted by statute. Multimedia submissions (audio, video, etc.) must
be accompanied by a written comment. The written comment is considered
the official comment and should include discussion of all points you
wish to make. The EPA will generally not consider comments or comment
contents located outside of the primary submission (i.e., on the web,
cloud, or other file sharing system). Please visit <a href="https://www.epa.gov/dockets/commenting-epa-dockets">https://www.epa.gov/dockets/commenting-epa-dockets</a> for additional submission methods; the
full EPA public comment policy; information about CBI, PBI, or
multimedia submissions; and general guidance on making effective
comments.
Richard A. Wayland,
Director, Air Quality Assessment Division.
[FR Doc. 2024-02935 Filed 2-14-24; 8:45 am]
BILLING CODE 6560-50-P
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