Mandatory Reporting of Greenhouse Gases: Notice of Data Availability Regarding Global Warming Potential Values for Certain Fluorinated Greenhouse Gases and Fluorinated Heat Transfer Fluids, 20632-20637 [2013-07977]
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FOR FURTHER INFORMATION CONTACT:
George W. Denning, Office of
Emergency Management, Mail Code
5104A, Environmental Protection
Agency, 1200 Pennsylvania Ave., NW.,
Washington, DC 20460; telephone
number: (202) 564–2404; fax number:
(202) 564–2625; email address:
Denning.George@epa.gov.
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Supporting documents which explain
in detail the information that the EPA
will be collecting are available in the
public docket for this ICR. The docket
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Respondents/affected entities: Private
facilities, State/Local/Tribal
governments.
Respondent’s obligation to respond:
Mandatory per 40 CFR part 112.
Estimated number of respondents:
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Frequency of response: Less than once
per year.
Total estimated burden: 8,798,928
hours (per year). Burden is defined at 5
CFR 1320.3(b).
Total estimated cost: $987,220,025,
includes $186,674,814 annualized
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costs.
Changes in the Estimates: Differences
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[EPA–HQ–OAR–2009–0927; FRL–9799–4]
Mandatory Reporting of Greenhouse
Gases: Notice of Data Availability
Regarding Global Warming Potential
Values for Certain Fluorinated
Greenhouse Gases and Fluorinated
Heat Transfer Fluids
Environmental Protection
Agency (EPA).
ACTION: Notice of data availability and
request for comment.
AGENCY:
The EPA is announcing to the
public the availability of estimated
global warming potentials, as well as
data and analysis submitted in support
of them, for eight fluorinated heat
transfer fluids. We are requesting
comments on the estimated global
warming potentials and the data and
analysis supporting them. We are also
requesting comment on the cited global
warming potentials for 35 other
fluorinated greenhouse gases and
fluorinated heat transfer fluids for
which we do not currently possess
supporting data and analysis. The EPA
is requesting comment on the global
warming potentials of all 43 chemicals
as we consider adding these global
warming potentials to the Greenhouse
Gas Reporting rule.
DATES: Comments must be received on
or before May 6, 2013.
ADDRESSES: Submit your comments,
identified by Docket ID No. EPA–HQ–
OAR–2009–0927, by one of the
following methods:
SUMMARY:
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• Federal eRulemaking Portal: https://
www.regulations.gov: Follow the online
instructions for submitting comments.
• Email:
GHGReportingFGHG@epa.gov.
• Fax: (202) 566–1741.
• Mail: EPA Docket Center, Attention
Docket EPA–HQ–OAR–2009–0927, Mail
code: 2822T, 1200 Pennsylvania Avenue
NW., Washington, DC 20460.
• Hand Delivery: EPA Docket Center,
Public Reading Room, Room 3334, EPA
West Building, Attention Docket EPA–
HQ–OAR–2009–0927, 1301 Constitution
Avenue NW., Washington, DC 20004.
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–2009–
0927. 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
https://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 https://
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‘‘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 email comment directly
to EPA without going through https://
www.regulations.gov your email 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 comment, the 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 the 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.
Docket: All documents in the docket
are listed in the https://
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listed in the index, some information is
not publicly available, e.g., CBI or other
information whose disclosure is
restricted by statute. Certain other
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will be publicly available only in hard
copy. Publicly available docket
materials are available either
electronically in https://
www.regulations.gov or in hard copy at
EPA’s Docket Center, Public Reading
Room, EPA West Building, Room 3334,
1301 Constitution Avenue NW.,
Washington, DC 20004. This Docket
Facility is open from 8:30 a.m. to 4:30
p.m., Monday through Friday, excluding
legal holidays. The telephone number
for the Public Reading Room is (202)
566–1744, and the telephone number for
the Air Docket is (202) 566–1742.
FOR FURTHER INFORMATION CONTACT:
Deborah Ottinger, Climate Change
Division, Office of Atmospheric
Programs (6207J), Environmental
Protection Agency, 1200 Pennsylvania
Avenue NW., Washington, DC 20460;
telephone number: (202) 343–9149; fax
number: (202) 343–2342; email address:
ottinger.deborah@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. What is today’s notice about?
• The EPA is making available for
public comment estimated GWPs for the
eight fluorinated heat transfer fluids
(HTFs) listed in Table 1 of this notice as
well as data and analysis submitted in
support of those GWPs.
• The EPA is also making available
for public comment cited GWPs for the
35 fluorinated GHGs and fluorinated
HTFs listed in Table 2 of this notice.
The EPA does not currently possess
supporting data and analysis for these
GWPs.
• Both sets of chemicals and their
GWPs are being considered for addition
to Table A–1 to subpart A of part 98, the
compendium of GWPs used to convert
tons of chemical into tons of carbon
dioxide equivalent (CO2e) under the
Greenhouse Gas Reporting Program.
B. How does this notice relate to the
forthcoming proposed rule titled ‘‘2013
Revisions to the Greenhouse Gas
Reporting Rule and Proposed
Confidentiality Determinations for New
or Substantially Revised Data
Elements’’?
In the proposed rule signed March 8,
2013, titled ‘‘2013 Revisions to the
Greenhouse Gas Reporting Rule and
Proposed Confidentiality
Determinations for New or Substantially
Revised Data Elements’’ (hereinafter
referred to as the ‘‘2013 Technical
Corrections Proposed Rule’’), the EPA is
proposing to amend subpart A, General
Provisions, to propose GWPs for certain
fluorinated greenhouse gases not
currently listed in Table A–1 to subpart
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A. This notice requests comment on
GWPs for fluorinated GHGs and
fluorinated HTFs for which documented
GWPs were not available in time for
inclusion in the 2013 Technical
Corrections Proposed Rule. The
comments submitted in response to this
notice are intended to inform a potential
future rulemaking to amend Table A–1
to subpart A to add the GWPs of some
or all of the fluorinated GHGs and
fluorinated HTFs listed in this notice.
C. Where can I get the information?
All of the information can be obtained
through the Docket and at https://
www.regulations.gov (see ADDRESSES
section above for docket contact
information).
D. What is the EPA taking comment on
and what supporting documentation do
I need to include in my comments?
The EPA requests comment on topics
including but not limited to the
following:
• For the fluorinated HTFs in Table 1
of this notice, the reliability, including
the likely accuracy and precision, of the
GWPs listed in Table 1 given the data
and analysis submitted in support of
them, and
• The completeness, quality, and
transparency of the data and analysis
submitted in support of the GWPs in
Table 1 of this notice.
• For the fluorinated GHGs and HTFs
in Table 2 of this notice, the reliability,
including the likely accuracy and
precision, of the GWPs listed, and
• The accuracy of the chemical names
and formulas listed.
For the fluorinated HTFs in Table 1 of
this notice, the EPA is specifically
seeking comment on the extent to which
the supporting data and analysis
includes the following:
• Data and analysis related to the
low-pressure gas phase infrared
absorption spectrum of the fluorinated
GHG.
• Data and analysis related to the
estimated atmospheric lifetime of the
fluorinated GHG (reaction mechanisms
and rates, including e.g., photolysis and
reaction with atmospheric components
such as OH, O3, CO, and water),
including descriptions of the
measurements or modeling.
• The radiative transfer analysis that
integrates the lifetime and infrared
absorption spectrum data to calculate
the GWP.
• Any published or unpublished
studies of the GWP of the gas.
Where quantitative structure–activity
relationship (QSAR) models have been
used, the EPA is seeking comment on
the extent to which the data and
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analysis include information
documenting the level of accuracy of the
QSAR-derived GWP, including:
• Information on how the structure of
the ‘‘target’’ fluorinated GHG is similar
to the structures of the fluorinated GHGs
used to model the radiative forcing and/
or reaction rate of the ‘‘target’’
fluorinated GHG.
• Information on the quality (i.e.,
accuracy and precision) and quantity of
the measurements of the radiative
forcings and/or reaction rates of the
fluorinated GHGs used to model these
parameters for the ‘‘target’’ fluorinated
GHG.
• Estimated uncertainties of the
modeled forcings and/or reaction rates.
• Descriptions and results of any
efforts to validate the QSAR model(s).
E. What should I consider as I prepare
my comments for EPA?
• Explain your views as clearly as
possible.
• Describe any assumptions that you
used.
• Provide any technical information
or data you used that support your
views.
• Provide specific examples to
illustrate your concerns.
• Offer alternatives.
• Make sure to submit your
comments by the comment period
deadline identified.
• To ensure proper receipt by EPA,
identify the appropriate docket
identification number in the subject line
on the first page of your response. It
would also be helpful if you provided
the name, date, and Federal Register
citation related to your comments.
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F. Submitting Confidential Business
Information (CBI)
Do not submit information you are
claiming as CBI to EPA through https://
www.regulations.gov or email. Clearly
mark the part of the information that
you claim to be CBI. Information so
marked will not be disclosed except in
accordance with procedures set forth in
40 CFR part 2. 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
1 Fully fluorinated compounds are defined as
compounds that contain only single bonds and in
which all available valence locations are filled by
fluorine atoms (e.g., saturated perfluorocarbons;
fully fluorinated linear, branched and cyclic
alkanes; fully fluorinated ethers; fully fluorinated
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that does not contain the information
claimed as CBI must be submitted for
inclusion in the public docket.
II. Background
Table A–1 to subpart A of 40 CFR part
98 (‘‘Table A–1’’) is a compendium of
GWP values of certain GHGs that are
required to be reported under one or
more subparts of the Greenhouse Gas
Reporting rule (‘‘Part 98’’). These GWPs
are used to convert tons of chemical into
tons of CO2-equivalent for purposes of
various calculations and reporting
under the rule. As acknowledged in the
Federal Register notice for the final Part
98 (74 FR 56348, October 30, 2009), it
is the EPA’s intent to periodically
update Table A–1 as GWPs are
evaluated or re-evaluated by the
scientific community. This will provide
a more accurate and complete account
of the atmospheric impacts of GHG
emissions and supplies.
Table A–1 of Part 98 currently
includes 10 fluorinated HTFs of which
EPA is aware, but there are a number
that it does not include. Of the 42
fluorinated HTFs listed in this notice
(none of which is on Table A–1 of Part
98), electronics facilities reported
emissions of 17 under the Greenhouse
Gas Reporting Program (GHGRP).
Electronics facilities reported use of
another four in a 2009 industry survey
by the International SEMATECH
Manufacturing Initiative (Technology
Transfer #09065014A–TR). Other HTFs
(those with vapor pressures below 1 mm
Hg at 25 degrees C) may be reported for
the first time this year because of an
expanded definition of fluorinated HTF
that went into effect in 2012. Several of
the fluorinated HTFs in this notice are
fully fluorinated. Fully fluorinated
compounds are likely to have long
atmospheric lifetimes and high GWPs.1
There are two primary suppliers of
fluorinated HTFs used in the United
States: 3M Company (3M) and Solvay.
After evaluating the reports submitted
under subpart I, the EPA contacted 3M
and Solvay and requested any data and
information they had regarding the
GWPs of the fluorinated HTFs that they
supplied.
3M responded with estimated GWPs
and supporting data and analysis for
eight fluorinated HTFs collectively
composed of nine fluorinated
compounds. (One of the HTFs, FC–77,
is a blend of two fluorinated
tertiary amines; fully fluorinated aminoethers; and
perfluoropolyethers).
2 Solvay provided a peer-reviewed paper
regarding a fluorinated compound, PFPMIE, that is
already on Table A–1 and that is sold under the
trade name of Galden HT 70. (There are multiple
PFPMIEs, which have the general chemical
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compounds.) For one of the fluorinated
compounds, C8F18, the EPA is proposing
a GWP in the 2013 Technical
Corrections Proposed Rule. Thus, the
EPA is not requesting comment on the
GWP of C8F18 through this action.
However, the EPA is requesting
comment on the GWPs and supporting
data and analysis for the other eight
compounds, which are listed in Table 1
of this notice. These compounds (along
with the 3M HTFs already included on
Table A–1 of Part 98) account for most
of the emissions of 3M-supplied HTFs
reported to EPA under subpart I to date
(i.e., in 2012).
Solvay indicated that it generally did
not possess data and analysis to support
estimated GWPs for the Solvay-supplied
HTFs that are not already on Table A–
1 of Part 98.2 Table 2 of this notice
therefore includes all of the Solvaysupplied fluorinated HTFs of which
EPA is aware and which are not already
included on Table A–1. It also includes
some 3M-supplied fluorinated HTFs
(and one fluorinated GHG used as a
chamber cleaning gas) for whose
estimated GWPs 3M did not submit
supporting data and analysis. 3M
indicates that some of these HTFs are no
longer produced.
For several of the fluorinated HTFs
(and for the fluorinated GHG) in Table
2 of this notice, approximate GWPs have
been presented or published (e.g., in
presentations to the EPA or in material
safety data sheets (MSDSs)) without
accompanying explanation or
documentation of how those GWPs have
been developed. For a large subset of
these fully fluorinated chemicals, GWPs
of 10,000 were identified in a
presentation given by 3M to EPA. For
some of these chemicals, different GWPs
were identified in other sources, such as
MSDSs issued by 3M or Solvay. These
are the GWPs that are included in Table
2. The EPA does not intend to add the
cited GWPs for these compounds to
Table A–1 of Part 98 without supporting
data and analysis. We are therefore
continuing to assemble and evaluate
information regarding the GWPs for the
compounds in Table 2 of this notice. We
request comment on these GWPs and on
the accuracy of the listed chemical
names and formulas for the compounds.
III. GWP Values on Which EPA is
Seeking Comment
structure F3C(OCFCF3CF2)m(OCF2)nOCF3. The
PFPMIE that is listed on Table A–1 and is the
primary component of HT 70 is the simplest
version, with m=n=1.) In addition, Solvay
submitted an infrared absorption spectrum for
another fluorinated HTF that it imports into the
U.S., Galden HT–110.
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TABLE 1—F–HTFS WITH DOCUMENTED GWPS
Trade name(s)
CAS No.
Chemical name and formula
Submitted GWP
Fluorinert FC–77 (component);
Fluorinert FC–75.
335–36–4 .............
9,600 ....................
Fluorinert FC–3283 ......................
338–83–0 .............
Perfluoro-2-butyltetrahydrofuran.
C8F16O ......................................
Perfluoro-tripropylamine (PTPA)
(C3F7)3N ....................................
Fluorinert FC–40 ..........................
1064698–37–8 .....
Perfluoro-tributylamine (PTBA)
(C4F9)3N ....................................
9,020 ....................
Fluorinert FC–3284, PF–5052 .....
382–28–5 .............
9,500 ....................
Fluorinert FC–770 ........................
1093615–61–2 .....
Novec 7300, HFE–7300 ..............
132182–92–4 .......
Novec 7500, HFE–7500 ..............
297730–93–9 .......
Perfluoromethyl
morpholine
(PMM).
C5F11NO ...................................
Perfluoro-isopropyl morpholine
(PIPM).
C7F15NO ...................................
1,1,1,2,2,3,4,5,5,5-decafluoro-3methoxy-4-trifluoromethylpentane.
CF3CF2CF(OCH3)CF(CF3)2 ......
3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6dodecafluoro-2trifluoromethyl-hexane.
CF3CF2CF2CF(OC2H5)CF(CF3)2
8,690 ....................
11,000 ..................
310 .......................
100 .......................
Source of submitted GWP
GWP and calculation methodology provided by manufacturer
GWP and calculation methodology provided by manufacturer
GWP and calculation methodology provided by manufacturer
GWP and calculation methodology provided by manufacturer
GWP and calculation methodology provided by manufacturer
GWP and calculation methodology provided by manufacturer
GWP and calculation methodology provided by manufacturer
F–HTFs with Vapor Pressure Less than 1 mm Hg
Fluorinert FC–70 ..........................
338–84–1 .............
Perfluoro-triamylamine (PTAA)
(C5F11)3N ..................................
8,900 ....................
GWP and calculation methodology provided by manufacturer
TABLE 2—F–GHGS AND F–HTFS FOR WHOSE GWPS DOCUMENTATION IS NOT AVAILABLE
Trade name(s)
CAS No.
Chemical name and formula
Cited GWP
Heptafluorobutanoyl fluoride ........
773–14–8 .............
C4F8O .......................................
8,700 ....................
Fluorinert FC–3255, FC–104 .......
335–36–4 .............
Predominantly C5-C18 ...............
10,000 ..................
Fluorinert
FC–5311,
Phenanthrene.
Fluorinert FC–5320 ......................
306–91–2 .............
10,000 ..................
86508–42–1 .........
Perfluoroperhydrophenanthrene
C14F24 .......................................
Perfluoro-compounds C5-C18 ....
Fluorinert FC–8270 ......................
338–83–0 .............
Novec 7600, HFE–7600 ..............
870778–34–0 .......
H-Galden ZT–130 ........................
>5,000 ..................
3000–5000 ...........
H-Galden ZT–150 ........................
188690–77–9 .......
HCF2OCF2OCF2CF2OCF2H .....
3000–5000 ...........
H-Galden ZT–180 ........................
188690–77–9 .......
HCF2OCF2OCF2CF2OCF2H .....
3000–5000 ...........
H-Galden ZV60 ............................
Not Available ........
Not Available ........
HCF2O-(CF2O)p-(CF2CF2O)qCF2H.
(ratio of p/q is 2/3) ....................
Not Available ............................
3,000–5,000 .........
H-Galden ZV85, ZT–85 ...............
H-Galden ZV100 ..........................
Not Available ........
Not Available ............................
3,000–5,000 .........
H-Galden ZV135 ..........................
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188690–77–9 .......
Perfluoro compounds (primarily
compounds with 9 carbons).
1,1,1,2,3,3-Hexafluoro-4(1,1,2,3,3,3-hexafluoropropoxy)-pentane.
C8H6F12O ..................................
HCF2OCF2OCF2CF2OCF2H .....
Not Available ........
Not Available ............................
3,000–5,000 .........
Galden DET .................................
Not Available ........
10,000 ..................
Galden E85 ..................................
Not Available ........
Galden HT–55 .............................
69991–67–9 .........
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 2.03 to 9.26 h ......................
m = 0.04 to 0.19 .......................
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10,000 ..................
700 .......................
3,000–5,000 .........
10,000 ..................
10,000 ..................
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Source of cited GWP
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EPA b
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EPA b
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Pruette et al.
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manufacturer’s litpresentation to
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Identified
EPA b
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EPA b
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EPA b
in presentation to
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EPA b
Identified
EPA b
Identified
EPA b
Identified
EPA b
Identified
EPA b
in presentation to
in presentation to
in presentation to
in presentation to
in presentation to
in presentation to
in presentation to
in presentation to
in presentation to
20636
Federal Register / Vol. 78, No. 66 / Friday, April 5, 2013 / Notices
TABLE 2—F–GHGS AND F–HTFS FOR WHOSE GWPS DOCUMENTATION IS NOT AVAILABLE—Continued
Trade name(s)
CAS No.
Chemical name and formula
Cited GWP
Galden HT–90 .............................
69991–67–9 .........
10,000 ..................
Identified in presentation to
EPA b
Galden HT–110 ...........................
69991–67–9 .........
10,000 ..................
Identified in presentation to
EPA b,e
Galden HT–135 ...........................
69991–67–9 .........
10,000 ..................
Identified in presentation to
EPA b
Galden HT–170 ...........................
69991–67–9 .........
10,000 ..................
Identified in presentation to
EPA b
Galden D02—TS .........................
69991–67–9 .........
10,000 ..................
Galden D02—TSX .......................
69991–67–9 .........
Identified in presentation to
EPA b
No GWP found
Galden PFS 2 ..............................
69991–67–9 and
9002–84–0.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 2.03 to 9.26 h) .....................
m = 0.04 to 0.19 .......................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 2.03 to 9.26 h ......................
m = 0.04 to 0.19 .......................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 2.03 to 9.26 h ......................
m = 0.04 to 0.19 .......................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 2.03 to 9.26 h ......................
m = 0.04 to 0.19 .......................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
None provided ......
None provided ......
Source of cited GWP
HTF identified in distributor’s literature f
F–HTFs with Vapor Pressure Less than 1 mm Hg
311–89–7 .............
N(CF2CF2CF2CF3)3 ...................
10,000 ..................
Fluorinert FC–5312 ......................
338–84–1 .............
69991–67–9 .........
Galden D03 ..................................
69991–67–9 .........
Galden D05 ..................................
69991–67–9 .........
Galden HS–240 ...........................
69991–67–9 .........
Galden HS–260 ...........................
69991–67–9 .........
Galden HT–200 ...........................
69991–67–9 .........
Galden HT–230 ...........................
69991–67–9 .........
Galden LS–200 ............................
69991–67–9 .........
Galden LS–215 ............................
69991–67–9 .........
Galden LS–230 ............................
69991–67–9 .........
Perfluoro compounds (primarily
with 15 carbons).
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 6.4 to 7.3 h ..........................
m = 0.1 to 0.15 .........................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 6.4 to 7.3 h ..........................
m = 0.1 to 0.15 .........................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 2.03 to 9.26 h ......................
m = 0.04 to 0.19 .......................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 2.03 to 9.26 h ......................
m = 0.04 to 0.19 .......................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 5.2 to 6.1 h ..........................
m = 0.1 to 0.12 .........................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 5.2 to 6.1 h ..........................
m = 0.1 to 0.12 .........................
CF3(OCFCF3CF2)n-(OCF2)mOCF3.
n = 5.2 to 6.1 h ..........................
m = 0.1 to 0.12 .........................
10,000 ..................
Galden D02 ..................................
mstockstill on DSK4VPTVN1PROD with NOTICES
Fluorinert FC–43 ..........................
10,000 ..................
10,000 ..................
10,000 ..................
10,000 ..................
Identified
EPA b
Identified
EPA b
Identified
EPA b
Identified
EPA b
Identified
EPA b
Identified
EPA b
in presentation to
in presentation to
in presentation to
in presentation to
in presentation to
in presentation to
10,000 ..................
Identified in presentation to
EPA b
10,000 ..................
Identified in presentation to
EPA b
None provided ......
HTF identified in distributor’s literature g
10,000 ..................
Identified in presentation to
EPA b
10,000 ..................
Identified in presentation to
EPA b
10,000 ..................
Identified in presentation to
EPA b
a Pruette, L., S. Karecki, R. Reif, L. Tousignant, W. Reagan, S. Kesari, and L. Zazzera. ‘‘Evaulation of C4F8O as an Alternative Plasma-Enhanced Chemical Vapor Deposition Chamber Clean Chemistry.’’ Journal of the Electrochemical Society, 147 (3): 1149–1153, 2000.
b 3M Company. ‘‘Greenhouse Gas Reporting of Heat Transfer Fluids.’’ Presentation by Kurt Werner of 3M Electronics Markets Materials Division. Presented to the EPA, January 2011. Available in Docket No. EPA–HQ–OAR–2011–0512.
c 3M Company. ‘‘Material Safety Data Sheet: 3MTM FluorinertTM FC–5320 Electronic Liquid.’’ 2012. Available online at: https://multimedia.3m.com/mws/mediawebserver?SSSSSuUn_zu8l00x4xtZm8m94v70k17zHvu9lxtD7SSSSSS—
d 3M Company. ‘‘Material Safety Data Sheet: 3MTM NovecTM 7600 Engineered Fluid.’’ 2011. Available online at: https://multimedia.3m.com/
mws/mediawebserver?mwsId=SSSSSuUn_zu8l00xMxmGmxtx4v70k17zHvu9lxtD7SSSSSS—.
e Solvay provided an infrared (IR) spectrum for this compound, but not an estimated atmospheric lifetime or GWP.
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20637
f https://www.sigmaaldrich.com/catalog/product/aldrich/374431?lang=en®ion=US.
g https://www.lesker.com/newweb/fluids/msds/Galden_HT230.pdf.
h In the chemical formulas for the Galden series, ‘‘n’’ and ‘‘m’’ indicate the number of times each group (in parentheses) is repeated in the
compound. While ‘‘n’’ and ‘‘m’’ are integers in any single molecule, the Galden HTFs are typically made up of mixtures of different molecules.
The values for ‘‘n’’ and ‘‘m’’ for any single Galden HTF represent averages for that HTF. Table 2 provides the ranges of the average values of
‘‘n’’ and ‘‘m’’ for the Solvay HTFs in each Galden series (Galden HT, LS, etc.).
mstockstill on DSK4VPTVN1PROD with NOTICES
IV. Summary of EPA Assessment of
Submitted GWPs and the Data and
Analysis Supporting Them
The EPA completed a review of the
GWPs listed in Table 1 of this notice
and the data and analysis submitted in
support of them. That assessment is
available in the docket, together with
the submitted data and analyses. In
general, we found that the data and
methods used to estimate the GWPs
were reasonable and that the GWPs
were consistent with what would be
expected for compounds of the types
analyzed. However, there were some
limitations to the data and analysis.
First, in some cases the transparency of
the data and analysis were limited
because some of the reports containing
the detailed background information
were not available for review in time for
this notice. Second, some of the data
were of uncertain quality because they
were based on an unpublished master’s
thesis. Third, because some of the
analyses were performed in the early
1990s, some of the models used to
estimate lifetimes or radiative
efficiencies were out of date. Fourth, in
one case (PTAA), radiative efficiency
estimates were based on a quantitative
structural activity relationship (QSAR)
of uncertain predictive ability. Fifth, the
atmospheric lifetime for one of the
short-lived compounds (HFE–7300) was
estimated based on an atmospheric
lifetime for methane that is lower than
the currently accepted lifetime,
resulting in an underestimated lifetimes
for that compound. Finally, for the six
long-lived compounds, experimental
limitations prevented 3M or its
researchers from establishing more than
minimum atmospheric lifetimes, and
the GWPs based on these lifetimes are
therefore also minimums.
Overall, we do not expect that these
limitations resulted in large errors in the
resulting GWPs; and with the exception
of the errors attributable to the last two
issues (related to atmospheric lifetimes),
we expect that these are random rather
than systematic errors. To address the
last two issues, we examined the
sensitivity of the GWPs of the
compounds to atmospheric lifetime. In
general, 100-year GWPs for very longlived compounds are relatively
insensitive to increases in assumed
atmospheric lifetime, and our analysis
confirmed this. However, the 100-year
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Jkt 229001
GWPs for the short-lived compounds are
sensitive to increases in the assumed
atmospheric lifetime. For example,
updating the atmospheric lifetime for
HFE–7300 based on the currently
accepted atmospheric lifetime of
methane increases the estimated GWP of
HFE–7300 by 10 percent.
Dated: April 1, 2013.
Sarah Dunham,
Director, Office of Atmospheric Programs.
[FR Doc. 2013–07977 Filed 4–4–13; 8:45 am]
BILLING CODE 6560–50–P
ENVIRONMENTAL PROTECTION
AGENCY
[FRL–9796–4]
Notification of Public Meeting and a
Public Teleconference of the Hydraulic
Fracturing Research Advisory Panel
Environmental Protection
Agency (EPA).
ACTION: Notice.
AGENCY:
The Environmental Protection
Agency (EPA) Science Advisory Board
(SAB) Staff Office announces a public
meeting and public teleconference of
the Hydraulic Fracturing Research
Advisory Panel to provide an
opportunity for independent expert
members of the ad hoc Panel to provide
comment on EPA’s Study of the
Potential Impacts of Hydraulic
Fracturing on Drinking Water
Resources: Progress Report, which was
released in December 2012. The meeting
will also begin a broader commitment to
provide opportunities to brief the panel
on the last scientific and technical
developments in this emerging topic
area.
DATES: The public meeting will be held
on Tuesday, May 7, 2013, from 9:30 a.m.
to 6:00 p.m. and Wednesday, May 8,
2013, from 8:00 a.m. to 6:00 p.m.
(Eastern Daylight Time). The public
teleconference will be held on May 16,
2013, from 1:00 p.m. to 5:00 p.m.
(Eastern Daylight Time).
ADDRESSES: The public meeting will be
held at the Westin Arlington Gateway
Hotel located at 801 North Glebe Road,
Arlington, VA, 22203. The public
teleconference will be conducted by
telephone only. The public can also
view the May 7–8, 2013 meeting via a
non-interactive webcast that will be
SUMMARY:
PO 00000
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Fmt 4703
Sfmt 4703
broadcast on the internet. The
connection information to view the
meeting via webcast will be provided on
the SAB Web site at https://
www.epa.gov/sab in advance of the
meeting.
Any
member of the public who wants further
information concerning the
teleconference and meeting may contact
Mr. Edward Hanlon, Designated Federal
Officer (DFO), EPA Science Advisory
Board (1400R), U.S. Environmental
Protection Agency, 1200 Pennsylvania
Avenue NW., Washington, DC 20460;
via telephone/voicemail at (202) 564–
2134, fax at (202) 565–2098; or email at
hanlon.edward@epa.gov. General
information concerning the SAB can be
found on the EPA Web site at https://
www.epa.gov/sab.
SUPPLEMENTARY INFORMATION:
Background: The SAB was
established pursuant to the
Environmental Research, Development,
and Demonstration Authorization Act
(ERDDAA), codified at 42 U.S.C. 4365,
to provide independent scientific and
technical advice to the Administrator on
the technical basis for Agency positions
and regulations. The SAB is a Federal
Advisory Committee chartered under
the Federal Advisory Committee Act
(FACA), 5 U.S.C., App. 2. The SAB will
comply with the provisions of FACA
and all appropriate SAB Staff Office
procedural policies. Pursuant to FACA
and EPA policy, notice is hereby given
that the SAB will hold a public meeting
and public teleconference to receive
public comments and to provide an
opportunity for independent expert
members of the SAB Panel to discuss,
deliberate, and provide comment on the
topics below.
In response to public concern,
Congress directed EPA to study the
relationship between hydraulic
fracturing and drinking water. In 2011,
EPA’s Office of Research and
Development (ORD) published its Plan
to Study the Potential Impacts of
Hydraulic Fracturing on Drinking Water
Resources. EPA has requested comment
from individual ad hoc panel members
on its Study of the Potential Impacts of
Hydraulic Fracturing on Drinking Water
Resources as well as plan future
potential activities of the panel. The
Progress Report describes the status of
EPA’s ongoing research on the potential
FOR FURTHER INFORMATION CONTACT:
E:\FR\FM\05APN1.SGM
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]]>Agencies
[Federal Register Volume 78, Number 66 (Friday, April 5, 2013)]
[Notices]
[Pages 20632-20637]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-07977]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
[EPA-HQ-OAR-2009-0927; FRL-9799-4]
Mandatory Reporting of Greenhouse Gases: Notice of Data
Availability Regarding Global Warming Potential Values for Certain
Fluorinated Greenhouse Gases and Fluorinated Heat Transfer Fluids
AGENCY: Environmental Protection Agency (EPA).
ACTION: Notice of data availability and request for comment.
-----------------------------------------------------------------------
SUMMARY: The EPA is announcing to the public the availability of
estimated global warming potentials, as well as data and analysis
submitted in support of them, for eight fluorinated heat transfer
fluids. We are requesting comments on the estimated global warming
potentials and the data and analysis supporting them. We are also
requesting comment on the cited global warming potentials for 35 other
fluorinated greenhouse gases and fluorinated heat transfer fluids for
which we do not currently possess supporting data and analysis. The EPA
is requesting comment on the global warming potentials of all 43
chemicals as we consider adding these global warming potentials to the
Greenhouse Gas Reporting rule.
DATES: Comments must be received on or before May 6, 2013.
ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2009-0927, by one of the following methods:
[[Page 20633]]
Federal eRulemaking Portal: https://www.regulations.gov:
Follow the online instructions for submitting comments.
Email: GHGReportingFGHG@epa.gov.
Fax: (202) 566-1741.
Mail: EPA Docket Center, Attention Docket EPA-HQ-OAR-2009-
0927, Mail code: 2822T, 1200 Pennsylvania Avenue NW., Washington, DC
20460.
Hand Delivery: EPA Docket Center, Public Reading Room,
Room 3334, EPA West Building, Attention Docket EPA-HQ-OAR-2009-0927,
1301 Constitution Avenue NW., Washington, DC 20004. 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-
2009-0927. 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 https://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 https://www.regulations.gov. The https://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 email comment directly to EPA without
going through https://www.regulations.gov your email 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 comment, the 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 the 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.
Docket: All documents in the docket are listed in the https://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 https://www.regulations.gov or in hard copy at EPA's Docket Center,
Public Reading Room, EPA West Building, Room 3334, 1301 Constitution
Avenue NW., Washington, DC 20004. This Docket Facility is open from
8:30 a.m. to 4:30 p.m., Monday through Friday, excluding legal
holidays. The telephone number for the Public Reading Room is (202)
566-1744, and the telephone number for the Air Docket is (202) 566-
1742.
FOR FURTHER INFORMATION CONTACT: Deborah Ottinger, Climate Change
Division, Office of Atmospheric Programs (6207J), Environmental
Protection Agency, 1200 Pennsylvania Avenue NW., Washington, DC 20460;
telephone number: (202) 343-9149; fax number: (202) 343-2342; email
address: ottinger.deborah@epa.gov.
SUPPLEMENTARY INFORMATION:
I. General Information
A. What is today's notice about?
The EPA is making available for public comment estimated
GWPs for the eight fluorinated heat transfer fluids (HTFs) listed in
Table 1 of this notice as well as data and analysis submitted in
support of those GWPs.
The EPA is also making available for public comment cited
GWPs for the 35 fluorinated GHGs and fluorinated HTFs listed in Table 2
of this notice. The EPA does not currently possess supporting data and
analysis for these GWPs.
Both sets of chemicals and their GWPs are being considered
for addition to Table A-1 to subpart A of part 98, the compendium of
GWPs used to convert tons of chemical into tons of carbon dioxide
equivalent (CO2e) under the Greenhouse Gas Reporting
Program.
B. How does this notice relate to the forthcoming proposed rule titled
``2013 Revisions to the Greenhouse Gas Reporting Rule and Proposed
Confidentiality Determinations for New or Substantially Revised Data
Elements''?
In the proposed rule signed March 8, 2013, titled ``2013 Revisions
to the Greenhouse Gas Reporting Rule and Proposed Confidentiality
Determinations for New or Substantially Revised Data Elements''
(hereinafter referred to as the ``2013 Technical Corrections Proposed
Rule''), the EPA is proposing to amend subpart A, General Provisions,
to propose GWPs for certain fluorinated greenhouse gases not currently
listed in Table A-1 to subpart A. This notice requests comment on GWPs
for fluorinated GHGs and fluorinated HTFs for which documented GWPs
were not available in time for inclusion in the 2013 Technical
Corrections Proposed Rule. The comments submitted in response to this
notice are intended to inform a potential future rulemaking to amend
Table A-1 to subpart A to add the GWPs of some or all of the
fluorinated GHGs and fluorinated HTFs listed in this notice.
C. Where can I get the information?
All of the information can be obtained through the Docket and at
https://www.regulations.gov (see ADDRESSES section above for docket
contact information).
D. What is the EPA taking comment on and what supporting documentation
do I need to include in my comments?
The EPA requests comment on topics including but not limited to the
following:
For the fluorinated HTFs in Table 1 of this notice, the
reliability, including the likely accuracy and precision, of the GWPs
listed in Table 1 given the data and analysis submitted in support of
them, and
The completeness, quality, and transparency of the data
and analysis submitted in support of the GWPs in Table 1 of this
notice.
For the fluorinated GHGs and HTFs in Table 2 of this
notice, the reliability, including the likely accuracy and precision,
of the GWPs listed, and
The accuracy of the chemical names and formulas listed.
For the fluorinated HTFs in Table 1 of this notice, the EPA is
specifically seeking comment on the extent to which the supporting data
and analysis includes the following:
Data and analysis related to the low-pressure gas phase
infrared absorption spectrum of the fluorinated GHG.
Data and analysis related to the estimated atmospheric
lifetime of the fluorinated GHG (reaction mechanisms and rates,
including e.g., photolysis and reaction with atmospheric components
such as OH, O3, CO, and water), including descriptions of
the measurements or modeling.
The radiative transfer analysis that integrates the
lifetime and infrared absorption spectrum data to calculate the GWP.
Any published or unpublished studies of the GWP of the
gas.
Where quantitative structure-activity relationship (QSAR) models
have been used, the EPA is seeking comment on the extent to which the
data and
[[Page 20634]]
analysis include information documenting the level of accuracy of the
QSAR-derived GWP, including:
Information on how the structure of the ``target''
fluorinated GHG is similar to the structures of the fluorinated GHGs
used to model the radiative forcing and/or reaction rate of the
``target'' fluorinated GHG.
Information on the quality (i.e., accuracy and precision)
and quantity of the measurements of the radiative forcings and/or
reaction rates of the fluorinated GHGs used to model these parameters
for the ``target'' fluorinated GHG.
Estimated uncertainties of the modeled forcings and/or
reaction rates.
Descriptions and results of any efforts to validate the
QSAR model(s).
E. What should I consider as I prepare my comments for EPA?
Explain your views as clearly as possible.
Describe any assumptions that you used.
Provide any technical information or data you used that
support your views.
Provide specific examples to illustrate your concerns.
Offer alternatives.
Make sure to submit your comments by the comment period
deadline identified.
To ensure proper receipt by EPA, identify the appropriate
docket identification number in the subject line on the first page of
your response. It would also be helpful if you provided the name, date,
and Federal Register citation related to your comments.
F. Submitting Confidential Business Information (CBI)
Do not submit information you are claiming as CBI to EPA through
https://www.regulations.gov or email. Clearly mark the part of the
information that you claim to be CBI. Information so marked will not be
disclosed except in accordance with procedures set forth in 40 CFR part
2. 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.
II. Background
Table A-1 to subpart A of 40 CFR part 98 (``Table A-1'') is a
compendium of GWP values of certain GHGs that are required to be
reported under one or more subparts of the Greenhouse Gas Reporting
rule (``Part 98''). These GWPs are used to convert tons of chemical
into tons of CO2-equivalent for purposes of various
calculations and reporting under the rule. As acknowledged in the
Federal Register notice for the final Part 98 (74 FR 56348, October 30,
2009), it is the EPA's intent to periodically update Table A-1 as GWPs
are evaluated or re-evaluated by the scientific community. This will
provide a more accurate and complete account of the atmospheric impacts
of GHG emissions and supplies.
Table A-1 of Part 98 currently includes 10 fluorinated HTFs of
which EPA is aware, but there are a number that it does not include. Of
the 42 fluorinated HTFs listed in this notice (none of which is on
Table A-1 of Part 98), electronics facilities reported emissions of 17
under the Greenhouse Gas Reporting Program (GHGRP). Electronics
facilities reported use of another four in a 2009 industry survey by
the International SEMATECH Manufacturing Initiative (Technology
Transfer 09065014A-TR). Other HTFs (those with vapor pressures
below 1 mm Hg at 25 degrees C) may be reported for the first time this
year because of an expanded definition of fluorinated HTF that went
into effect in 2012. Several of the fluorinated HTFs in this notice are
fully fluorinated. Fully fluorinated compounds are likely to have long
atmospheric lifetimes and high GWPs.\1\
---------------------------------------------------------------------------
\1\ Fully fluorinated compounds are defined as compounds that
contain only single bonds and in which all available valence
locations are filled by fluorine atoms (e.g., saturated
perfluorocarbons; fully fluorinated linear, branched and cyclic
alkanes; fully fluorinated ethers; fully fluorinated tertiary
amines; fully fluorinated aminoethers; and perfluoropolyethers).
---------------------------------------------------------------------------
There are two primary suppliers of fluorinated HTFs used in the
United States: 3M Company (3M) and Solvay. After evaluating the reports
submitted under subpart I, the EPA contacted 3M and Solvay and
requested any data and information they had regarding the GWPs of the
fluorinated HTFs that they supplied.
3M responded with estimated GWPs and supporting data and analysis
for eight fluorinated HTFs collectively composed of nine fluorinated
compounds. (One of the HTFs, FC-77, is a blend of two fluorinated
compounds.) For one of the fluorinated compounds,
C8F18, the EPA is proposing a GWP in the 2013
Technical Corrections Proposed Rule. Thus, the EPA is not requesting
comment on the GWP of C8F18 through this action.
However, the EPA is requesting comment on the GWPs and supporting data
and analysis for the other eight compounds, which are listed in Table 1
of this notice. These compounds (along with the 3M HTFs already
included on Table A-1 of Part 98) account for most of the emissions of
3M-supplied HTFs reported to EPA under subpart I to date (i.e., in
2012).
Solvay indicated that it generally did not possess data and
analysis to support estimated GWPs for the Solvay-supplied HTFs that
are not already on Table A-1 of Part 98.\2\ Table 2 of this notice
therefore includes all of the Solvay-supplied fluorinated HTFs of which
EPA is aware and which are not already included on Table A-1. It also
includes some 3M-supplied fluorinated HTFs (and one fluorinated GHG
used as a chamber cleaning gas) for whose estimated GWPs 3M did not
submit supporting data and analysis. 3M indicates that some of these
HTFs are no longer produced.
---------------------------------------------------------------------------
\2\ Solvay provided a peer-reviewed paper regarding a
fluorinated compound, PFPMIE, that is already on Table A-1 and that
is sold under the trade name of Galden HT 70. (There are multiple
PFPMIEs, which have the general chemical structure
F3C(OCFCF3CF2)m(OCF2
)nOCF3. The PFPMIE that is listed on Table A-1
and is the primary component of HT 70 is the simplest version, with
m=n=1.) In addition, Solvay submitted an infrared absorption
spectrum for another fluorinated HTF that it imports into the U.S.,
Galden HT-110.
---------------------------------------------------------------------------
For several of the fluorinated HTFs (and for the fluorinated GHG)
in Table 2 of this notice, approximate GWPs have been presented or
published (e.g., in presentations to the EPA or in material safety data
sheets (MSDSs)) without accompanying explanation or documentation of
how those GWPs have been developed. For a large subset of these fully
fluorinated chemicals, GWPs of 10,000 were identified in a presentation
given by 3M to EPA. For some of these chemicals, different GWPs were
identified in other sources, such as MSDSs issued by 3M or Solvay.
These are the GWPs that are included in Table 2. The EPA does not
intend to add the cited GWPs for these compounds to Table A-1 of Part
98 without supporting data and analysis. We are therefore continuing to
assemble and evaluate information regarding the GWPs for the compounds
in Table 2 of this notice. We request comment on these GWPs and on the
accuracy of the listed chemical names and formulas for the compounds.
III. GWP Values on Which EPA is Seeking Comment
[[Page 20635]]
Table 1--F-HTFs With Documented GWPs
----------------------------------------------------------------------------------------------------------------
Chemical name and Source of submitted
Trade name(s) CAS No. formula Submitted GWP GWP
----------------------------------------------------------------------------------------------------------------
Fluorinert FC-77 (component); 335-36-4........ Perfluoro-2- 9,600........... GWP and calculation
Fluorinert FC-75. butyltetrahydro- methodology provided
furan. by manufacturer
C8F16O...............
Fluorinert FC-3283............ 338-83-0........ Perfluoro- 8,690........... GWP and calculation
tripropylamine methodology provided
(PTPA). by manufacturer
(C3F7)3N.............
Fluorinert FC-40.............. 1064698-37-8.... Perfluoro- 9,020........... GWP and calculation
tributylamine (PTBA). methodology provided
(C4F9)3N............. by manufacturer
Fluorinert FC-3284, PF-5052... 382-28-5........ Perfluoromethyl 9,500........... GWP and calculation
morpholine (PMM). methodology provided
C5F11NO.............. by manufacturer
Fluorinert FC-770............. 1093615-61-2.... Perfluoro-isopropyl 11,000.......... GWP and calculation
morpholine (PIPM). methodology provided
C7F15NO.............. by manufacturer
Novec 7300, HFE-7300.......... 132182-92-4..... 1,1,1,2,2,3,4,5,5,5- 310............. GWP and calculation
decafluoro-3-methoxy- methodology provided
4-trifluoromethyl- by manufacturer
pentane.
CF3CF2CF(OCH3)CF(CF3)
2.
Novec 7500, HFE-7500.......... 297730-93-9..... 3-ethoxy- 100............. GWP and calculation
1,1,1,2,3,4,4,5,5,6, methodology provided
6,6-dodecafluoro-2- by manufacturer
trifluoromethyl-
hexane.
CF3CF2CF2CF(OC2H5)CF(
CF3)2.
----------------------------------------------------------------------------------------------------------------
F-HTFs with Vapor Pressure Less than 1 mm Hg
----------------------------------------------------------------------------------------------------------------
Fluorinert FC-70.............. 338-84-1........ Perfluoro- 8,900........... GWP and calculation
triamylamine (PTAA). methodology provided
(C5F11)3N............ by manufacturer
----------------------------------------------------------------------------------------------------------------
Table 2--F-GHGs and F-HTFs for whose GWPs Documentation is Not Available
----------------------------------------------------------------------------------------------------------------
Chemical name and
Trade name(s) CAS No. formula Cited GWP Source of cited GWP
----------------------------------------------------------------------------------------------------------------
Heptafluorobutanoyl fluoride.. 773-14-8........ C4F8O................ 8,700........... Identified in Pruette
et al. (2000) \a\
Fluorinert FC-3255, FC-104.... 335-36-4........ Predominantly C5-C18. 10,000.......... Identified in
presentation to EPA
\b\
Fluorinert FC-5311, 306-91-2........ Perfluoroperhydrophen 10,000.......... Identified in
Phenanthrene. anthrene. presentation to EPA
C14F24............... \b\
Fluorinert FC-5320............ 86508-42-1...... Perfluoro-compounds >5,000.......... Identified in
C5-C18. manufacturer's
literature \c\
Fluorinert FC-8270............ 338-83-0........ Perfluoro compounds 10,000.......... Identified in
(primarily compounds presentation to EPA
with 9 carbons). \b\
Novec 7600, HFE-7600.......... 870778-34-0..... 1,1,1,2,3,3- 700............. Identified in
Hexafluoro-4- manufacturer's
(1,1,2,3,3,3- literature \d\
hexafluoroprop-oxy)-
pentane.
C8H6F12O.............
H-Galden ZT-130............... 188690-77-9..... HCF2OCF2OCF2CF2OCF2H. 3000-5000....... Identified in
presentation to EPA
\b\
H-Galden ZT-150............... 188690-77-9..... HCF2OCF2OCF2CF2OCF2H. 3000-5000....... Identified in
presentation to EPA
\b\
H-Galden ZT-180............... 188690-77-9..... HCF2OCF2OCF2CF2OCF2H. 3000-5000....... Identified in
presentation to EPA
\b\
H-Galden ZV60................. Not Available... HCF2O-(CF2O)p- 3,000-5,000..... Identified in
(CF2CF2O)q-CF2H. presentation to EPA
(ratio of p/q is 2/3) \b\
H-Galden ZV85, ZT-85.......... Not Available... Not Available........ 3,000-5,000..... Identified in
presentation to EPA
\b\
H-Galden ZV100................ Not Available... Not Available........ 3,000-5,000..... Identified in
presentation to EPA
\b\
H-Galden ZV135................ Not Available... Not Available........ 3,000-5,000..... Identified in
presentation to EPA
\b\
Galden DET.................... Not Available... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
\b\
Galden E85.................... Not Available... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
\b\
Galden HT-55.................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 2.03 to 9.26 \h\. \b\
m = 0.04 to 0.19.....
[[Page 20636]]
Galden HT-90.................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 2.03 to 9.26 \h\) \b\
m = 0.04 to 0.19.....
Galden HT-110................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 2.03 to 9.26 \h\. b,e
m = 0.04 to 0.19.....
Galden HT-135................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 2.03 to 9.26 \h\. \b\
m = 0.04 to 0.19.....
Galden HT-170................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 2.03 to 9.26 \h\. \b\
m = 0.04 to 0.19.....
Galden D02--TS................ 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
\b\
Galden D02--TSX............... 69991-67-9...... CF3(OCFCF3CF2)n- None provided... No GWP found
(OCF2)m-OCF3.
Galden PFS 2.................. 69991-67-9 and CF3(OCFCF3CF2)n- None provided... HTF identified in
9002-84-0. (OCF2)m-OCF3. distributor's
literature \f\
----------------------------------------------------------------------------------------------------------------
F-HTFs with Vapor Pressure Less than 1 mm Hg
----------------------------------------------------------------------------------------------------------------
Fluorinert FC-43.............. 311-89-7........ N(CF2CF2CF2CF3)3..... 10,000.......... Identified in
presentation to EPA
\b\
Fluorinert FC-5312............ 338-84-1........ Perfluoro compounds 10,000.......... Identified in
(primarily with 15 presentation to EPA
carbons). \b\
Galden D02.................... 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
\b\
Galden D03.................... 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
\b\
Galden D05.................... 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
\b\
Galden HS-240................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 6.4 to 7.3 \h\... \b\
m = 0.1 to 0.15......
Galden HS-260................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 6.4 to 7.3 \h\... \b\
m = 0.1 to 0.15......
Galden HT-200................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 2.03 to 9.26 \h\. \b\
m = 0.04 to 0.19.....
Galden HT-230................. 69991-67-9...... CF3(OCFCF3CF2)n- None provided... HTF identified in
(OCF2)m-OCF3. distributor's
n = 2.03 to 9.26 \h\. literature \g\
m = 0.04 to 0.19.....
Galden LS-200................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 5.2 to 6.1 \h\... \b\
m = 0.1 to 0.12......
Galden LS-215................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 5.2 to 6.1 \h\... \b\
m = 0.1 to 0.12......
Galden LS-230................. 69991-67-9...... CF3(OCFCF3CF2)n- 10,000.......... Identified in
(OCF2)m-OCF3. presentation to EPA
n = 5.2 to 6.1 \h\... \b\
m = 0.1 to 0.12......
----------------------------------------------------------------------------------------------------------------
\a\ Pruette, L., S. Karecki, R. Reif, L. Tousignant, W. Reagan, S. Kesari, and L. Zazzera. ``Evaulation of C4F8O
as an Alternative Plasma-Enhanced Chemical Vapor Deposition Chamber Clean Chemistry.'' Journal of the
Electrochemical Society, 147 (3): 1149-1153, 2000.
\b\ 3M Company. ``Greenhouse Gas Reporting of Heat Transfer Fluids.'' Presentation by Kurt Werner of 3M
Electronics Markets Materials Division. Presented to the EPA, January 2011. Available in Docket No. EPA-HQ-OAR-
2011-0512.
\c\ 3M Company. ``Material Safety Data Sheet: 3MTM FluorinertTM FC-5320 Electronic Liquid.'' 2012. Available
online at: https://multimedia.3m.com/mws/mediawebserver?SSSSSuUn_zu8l00x4xtZm8m94v70k17zHvu9lxtD7SSSSSS--
\d\ 3M Company. ``Material Safety Data Sheet: 3MTM NovecTM 7600 Engineered Fluid.'' 2011. Available online at:
https://multimedia.3m.com/mws/mediawebserver?mwsId=SSSSSuUn_zu8l00xMxmGmxtx4v70k17zHvu9lxtD7SSSSSS--.
\e\ Solvay provided an infrared (IR) spectrum for this compound, but not an estimated atmospheric lifetime or
GWP.
[[Page 20637]]
\f\ https://www.sigmaaldrich.com/catalog/product/aldrich/374431?lang=en®ion=US.
\g\ https://www.lesker.com/newweb/fluids/msds/Galden_HT230.pdf.
\h\ In the chemical formulas for the Galden series, ``n'' and ``m'' indicate the number of times each group (in
parentheses) is repeated in the compound. While ``n'' and ``m'' are integers in any single molecule, the
Galden HTFs are typically made up of mixtures of different molecules. The values for ``n'' and ``m'' for any
single Galden HTF represent averages for that HTF. Table 2 provides the ranges of the average values of ``n''
and ``m'' for the Solvay HTFs in each Galden series (Galden HT, LS, etc.).
IV. Summary of EPA Assessment of Submitted GWPs and the Data and
Analysis Supporting Them
The EPA completed a review of the GWPs listed in Table 1 of this
notice and the data and analysis submitted in support of them. That
assessment is available in the docket, together with the submitted data
and analyses. In general, we found that the data and methods used to
estimate the GWPs were reasonable and that the GWPs were consistent
with what would be expected for compounds of the types analyzed.
However, there were some limitations to the data and analysis. First,
in some cases the transparency of the data and analysis were limited
because some of the reports containing the detailed background
information were not available for review in time for this notice.
Second, some of the data were of uncertain quality because they were
based on an unpublished master's thesis. Third, because some of the
analyses were performed in the early 1990s, some of the models used to
estimate lifetimes or radiative efficiencies were out of date. Fourth,
in one case (PTAA), radiative efficiency estimates were based on a
quantitative structural activity relationship (QSAR) of uncertain
predictive ability. Fifth, the atmospheric lifetime for one of the
short-lived compounds (HFE-7300) was estimated based on an atmospheric
lifetime for methane that is lower than the currently accepted
lifetime, resulting in an underestimated lifetimes for that compound.
Finally, for the six long-lived compounds, experimental limitations
prevented 3M or its researchers from establishing more than minimum
atmospheric lifetimes, and the GWPs based on these lifetimes are
therefore also minimums.
Overall, we do not expect that these limitations resulted in large
errors in the resulting GWPs; and with the exception of the errors
attributable to the last two issues (related to atmospheric lifetimes),
we expect that these are random rather than systematic errors. To
address the last two issues, we examined the sensitivity of the GWPs of
the compounds to atmospheric lifetime. In general, 100-year GWPs for
very long-lived compounds are relatively insensitive to increases in
assumed atmospheric lifetime, and our analysis confirmed this. However,
the 100-year GWPs for the short-lived compounds are sensitive to
increases in the assumed atmospheric lifetime. For example, updating
the atmospheric lifetime for HFE-7300 based on the currently accepted
atmospheric lifetime of methane increases the estimated GWP of HFE-7300
by 10 percent.
Dated: April 1, 2013.
Sarah Dunham,
Director, Office of Atmospheric Programs.
[FR Doc. 2013-07977 Filed 4-4-13; 8:45 am]
BILLING CODE 6560-50-P
