Regulation of Fuels and Fuel Additives: Revised Definition of Substantially Similar Rule for Alaska, 22318-22320 [E8-8945]
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ebenthall on PRODPC60 with PROPOSALS
22318
Federal Register / Vol. 73, No. 81 / Friday, April 25, 2008 / Proposed Rules
governments, as described in the
Unfunded Mandates Reform Act of 1995
(Pub. L. 104–4).
Executive Order 13175 (65 FR 67249,
November 9, 2000) requires EPA to
develop an accountable process to
ensure ‘‘meaningful and timely input by
tribal officials in the development of
regulatory policies that have tribal
implications.’’ Seven Indian tribes have
reservations located within the
boundaries of the proposed SJVAB. EPA
plans to consult with representatives of
the seven Tribes and will continue to
work with the Tribes, as provided for in
Executive Order 13175. Accordingly,
EPA has addressed Executive Order
13175 to the extent that it applies to this
action. This proposed action also does
not have Federalism implications
because it does not have substantial
direct effects on the States, on the
relationship between the national
government and the States, or on the
distribution of power and
responsibilities among the various
levels of government, as specified in
Executive Order 13132 (64 FR 43255,
August 10, 1999). This proposed action
merely proposes to approve requests or
submittals from the State and does not
alter the relationship or the distribution
of power and responsibilities
established in the CAA. Executive Order
12898 establishes a Federal policy for
incorporating environmental justice into
Federal agency actions by directing
agencies to identify and address, as
appropriate, disproportionately high
and adverse human health or
environmental effects of their programs,
policies, and activities on minority and
low-income populations. Today’s action
involves proposed approvals of a
revised boundary designation, a
redesignation to attainment for the
SJVAB, a maintenance plan for the
SJVAB, motor vehicle emissions budgets
and conformity trading mechanism for
the area and commitments for East Kern.
It will not have disproportionately high
and adverse effects on any communities
in the area, including minority and lowincome communities.
This proposed rule also is not subject
to Executive Order 13045 ‘‘Protection of
Children from Environmental Health
Risks and Safety Risks’’ (62 FR 19885,
April 23, 1997), because it is not
economically significant. The
requirements of section 12(d) of the
National Technology Transfer and
Advancement Act of 1995 (15 U.S.C.
272 note) do not apply. This proposed
rule does not impose an information
collection burden under the provisions
of the Paperwork Reduction Act of 1995
(44 U.S.C. 3501 et seq.).
VerDate Aug<31>2005
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Jkt 214001
List of Subjects
40 CFR Parts 52
Environmental protection, Air
pollution control, Incorporation by
reference, Intergovernmental relations,
Particulate matter, Reporting and
recordkeeping requirements.
40 CFR Part 81
Environmental protection, Air
pollution control, National parks,
Wilderness areas.
Authority: 42 U.S.C. 7401 et seq.
Dated: April 21, 2008.
Laura Yoshii,
Acting Regional Administrator, Region IX.
[FR Doc. E8–9139 Filed 4–24–08; 8:45 am]
BILLING CODE 6560–50–P
1200 Pennsylvania Ave., NW.,
Washington, DC 20460. Comments may
also be submitted electronically or
through hand delivery/courier by
following the detailed instructions in
the ADDRESSES section of the direct final
rule located in the rules section of this
Federal Register.
FOR FURTHER INFORMATION CONTACT:
Jaimee Dong, Compliance and
Innovative Strategies Division, Office of
Transportation and Air Quality, Office
of Air and Radiation, Environmental
Protection Agency, Mail Code 6406J,
1200 Pennsylvania Avenue,
Washington, DC 20460; telephone
number: (202) 343–9672; fax number:
(202) 343–2800; e-mail address:
Dong.Jaimee@epa.gov.
SUPPLEMENTARY INFORMATION:
ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 79
[EPA–HQ–OAR–2007–0071; FRL–8557–7]
RIN 2060–AN94
Regulation of Fuels and Fuel
Additives: Revised Definition of
Substantially Similar Rule for Alaska
Environmental Protection
Agency (EPA).
ACTION: Proposed interpretive rule.
AGENCY:
SUMMARY: EPA is proposing to revise an
interpretive rule defining the term
‘‘substantially similar’’ for unleaded
gasoline as that phrase is used in section
211(f) of the Clean Air Act (the Act). To
meet the current definition, fuel or fuel
additives must possess, at the time of
manufacture, all of the physical and
chemical characteristics of an unleaded
gasoline as specified in ASTM Standard
D 4814–88 for at least one of the
Seasonal and Geographical Volatility
Classes specified in the standard. EPA
proposes to amend the definition to
allow some additional flexibility for the
vapor/liquid ratio specification for fuel
introduced into commerce in the state of
Alaska. In the ‘‘Rules and Regulations’’
section of this Federal Register, we are
amending the ‘‘substantially similar’’
definition as a direct final rule without
a prior proposed rule. If we receive no
adverse comment, we will not take
further action on this proposed rule.
DATES: Comments must be received by
May 27, 2008.
ADDRESSES: Submit your comments,
identified by Docket ID No. EPA–HQ–
OAR–2007–0071, by mail to Air and
Radiation Docket, Environmental
Protection Agency, Mailcode: 2822T,
PO 00000
Frm 00030
Fmt 4702
Sfmt 4702
I. Why Is EPA Issuing This Proposed
Rule?
This document proposes to revise the
‘‘substantially similar’’ interpretive rule.
EPA is not statutorily obligated to
conduct notice and comment
rulemaking when amending this
interpretive rule. See APA section
553(b)(A); CAA section 307(d).
However, as it has done when
previously amending this rule, EPA
desires to provide an opportunity for the
public to comment on this amendment.
We have published a direct final rule
amending the ‘‘substantially similar’’
interpretive rule in the ‘‘Rules and
Regulations’’ section of this Federal
Register because we view this as a
noncontroversial action and anticipate
no adverse comment. We have
explained our reasons for this action in
the preamble to the direct final rule.
If we receive no adverse comment, we
will not take further action on this
proposed rule. If we receive adverse
comment, we will withdraw the direct
final rule and it will not take effect. We
would address all public comments in
any subsequent final rule based on this
proposed rule.
We do not intend to institute a second
comment period on this action. Any
parties interested in commenting must
do so at this time. For further
information, please see the information
provided in the ADDRESSES section of
this document.
II. General Information
A. Does This Action Apply to Me?
Entities potentially affected by this
action include those involved with the
production or importation of unleaded
gasoline for use in Alaska. Categories
and entities affected by this action
include:
E:\FR\FM\25APP1.SGM
25APP1
Federal Register / Vol. 73, No. 81 / Friday, April 25, 2008 / Proposed Rules
NAICS codes a
Category
Industry ................................................................................
Industry ................................................................................
Industry ................................................................................
a North
324110
422710
422720
484220
484230
SIC codes b
2911
5171
5172
4212
4213
22319
Examples of potentially regulated entities
Petroleum Refiners.
Gasoline Marketers and Distributors.
Gasoline Carriers.
American Industry Classification System (NAICS).
Industrial Classification (SIC) system code.
b Standard
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.
3. Docket Copying Costs. You may be
charged a reasonable fee for
photocopying docket materials, as
provided by 40 CFR Part 2.
B. What Should I Consider as I Prepare
My Comments for EPA?
ebenthall on PRODPC60 with PROPOSALS
This table is not intended to be
exhaustive, but rather provides a guide
for readers regarding entities likely to be
affected by this action; however, other
types of entities not listed in the table
could also be affected. To determine
whether your entity is affected by this
action, you should examine the
applicability criteria of Parts 79 and 80
of title 40 of the Code of Federal
Regulations. If you have any question
regarding applicability of this action to
a particular entity, consult the person in
the preceding FOR FURTHER INFORMATION
CONTACT section.
III. Statutory Background
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
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Jkt 214001
Section 211(f)(1) of the Act makes it
unlawful for any manufacturer of a fuel
or fuel additive to first introduce into
commerce, or to increase the
concentration in use of, any fuel or fuel
additive for use in motor vehicles
manufactured after model year 1974
which is not substantially similar to any
fuel or fuel additive utilized in the
certification of any model year 1975, or
subsequent model year, vehicle or
engine under section 206 of the Act. An
EPA interpretive rule, published at 46
FR 38582 (July 28, 1981) and amended
at 56 FR 5352 (February 11, 1991),
defines the term ‘‘substantially similar’’
for unleaded gasoline. Under this
definition, unleaded gasoline that meets
several conditions, including complying
with the physical and chemical
specifications of ASTM Standard D
4814–88 for at least one of the Seasonal
and Geographical Volatility classes
specified in the standard, is considered
substantially similar. Further conditions
are described in the interpretive rule
and its amendment.
IV. Need for Action
Discussions with an Alaskan refiner
have highlighted the need for an
amendment to the definition of
‘‘substantially similar’’ for unleaded
gasoline. Currently, manufacturers of
gasoline for Alaska may not use a
temperature below 41 degrees Celsius
when testing the vapor-liquid (V/L) ratio
of the fuel and still be within the
current definition of ‘‘substantially
similar.’’ This amendment would allow
manufacturers producing unleaded
PO 00000
Frm 00031
Fmt 4702
Sfmt 4702
gasoline for use only in Alaska during
the winter months to use a minimum
test temperature of 35 degrees Celsius
when testing for a maximum V/L ratio
of 20 instead of requiring a V/L test
temperature of 41 degrees Celsius.
ASTM D 2533 is a test method that
covers a procedure for measuring the
volume of vapor formed at atmospheric
pressure from a given volume of
gasoline. The ratio of these volumes is
expressed as the V/L ratio of the
gasoline at the temperature of the test.
The tendency of a fuel to vaporize in
common automobile fuel systems is
indicated by the V/L ratio of that fuel at
conditions approximating those in
critical parts of the fuel system.
Allowing a lower test temperature
means that the vapor fraction of the fuel
may be higher.
The extreme cold of Alaska during the
winter months increases the risk that
engines using typical gasoline blends
will suffer from difficulty in cold
starting. A higher vapor fraction
improves mixing of the fuel with air,
which in turn improves cold starting.
Because the automotive fuel system is
closed, the lower test temperature of 35
degrees Celsius compared to 41 degrees
Celsius in the winter months is unlikely
to significantly increase evaporative
emissions. In addition, Alaska presently
does not possess ozone non-attainment
areas, most likely due to the cold
temperatures observed in Alaska.
Therefore, in the Agency’s judgment,
the impact on emissions would not be
significant and this increased flexibility
will allow refiners to provide a fuel
more suitable to the climatic conditions
of Alaska.
EPA invites comment from all
interested parties on this proposed
interpretive rule revision.
V. Statutory and Executive Order
Reviews
See Section V in the direct final rule
amending the ‘‘substantially similar’’
interpretive rule in the ‘‘Rules and
Regulations’’ section of this Federal
Register for a discussion of the
applicable statutes and executive orders.
E:\FR\FM\25APP1.SGM
25APP1
22320
Federal Register / Vol. 73, No. 81 / Friday, April 25, 2008 / Proposed Rules
Dated: April 17, 2008.
Stephen L. Johnson,
Administrator.
For the reasons set forth above, EPA
proposes to amend the definition of
substantially similar as follows:
Definition—Substantially Similar
EPA will treat a fuel or fuel additive
for general use in light-duty vehicles
manufactured after model year 1974 as
substantially similar to any fuel or fuel
additive utilized in the certification of
any model year 1975, or subsequent
model year vehicle or engine, under
section 206 of the Act, i.e.,
‘‘substantially similar,’’ if the following
criteria are met.
(1) The fuel must contain carbon,
hydrogen, and oxygen, nitrogen, and/or
sulfur, exclusively,1 in the form of some
combination of the following:
(a) Hydrocarbons;
(b) Aliphatic ethers;
(c) Aliphatic alcohols other than
methanol;
(d) (i) Up to 0.3 percent methanol by
volume;
(ii) Up to 2.75 percent methanol by
volume with an equal volume of
butanol, or higher molecular weight
alcohol;
(e) A fuel additive 2 at a concentration
of no more than 0.25 percent by weight
which contributes no more than 15 ppm
sulfur by weight to the fuel.
(2) The fuel must contain no more
than 2.0 percent oxygen by weight,
except fuels containing aliphatic ethers
and/or alcohols (excluding methanol)
must contain no more than 2.7 percent
oxygen by weight.
(3) The fuel must possess, at the time
of manufacture, all of the physical and
chemical characteristics of an unleaded
gasoline as specified in ASTM Standard
D 4814–88 for at least one of the
Seasonal and Geographical Volatility
Classes specified in the standard, with
the exception of fuel introduced into
commerce in the state of Alaska. For
fuel introduced into commerce in the
state of Alaska, all of the requirements
of this section (3) apply, with the
exception of the test temperature for a
maximum Vapor/Liquid Ratio (V/L) of
20, which shall be a minimum of 35°C
(95°F) for the period from September 16
through May 31.
(4) The fuel additive must contain
only carbon, hydrogen, and any one or
all of the following elements: Oxygen,
nitrogen, and/or sulfur.3
[FR Doc. E8–8945 Filed 4–24–08; 8:45 am]
BILLING CODE 6560–50–P
which produce gaseous combustion
products (i.e., products which exist as a gas at
Standard Temperature and Pressure) may be
present in the fuel at trace levels. An impurity is
that substance which is present through
ebenthall on PRODPC60 with PROPOSALS
1 Impurities
VerDate Aug<31>2005
15:13 Apr 24, 2008
Jkt 214001
contamination, or remains naturally, after
processing of the fuel is completed.
2 For the purposes of this interpretive rule, the
term ‘‘fuel additive’’ refers only to that part of the
additive package which is not hydrocarbon.
PO 00000
Frm 00032
Fmt 4702
Sfmt 4702
3 Impurities which produce gaseous combustion
products may be present in the fuel additive at trace
levels.
E:\FR\FM\25APP1.SGM
25APP1
]]>Agencies
[Federal Register Volume 73, Number 81 (Friday, April 25, 2008)]
[Proposed Rules]
[Pages 22318-22320]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E8-8945]
-----------------------------------------------------------------------
ENVIRONMENTAL PROTECTION AGENCY
40 CFR Part 79
[EPA-HQ-OAR-2007-0071; FRL-8557-7]
RIN 2060-AN94
Regulation of Fuels and Fuel Additives: Revised Definition of
Substantially Similar Rule for Alaska
AGENCY: Environmental Protection Agency (EPA).
ACTION: Proposed interpretive rule.
-----------------------------------------------------------------------
SUMMARY: EPA is proposing to revise an interpretive rule defining the
term ``substantially similar'' for unleaded gasoline as that phrase is
used in section 211(f) of the Clean Air Act (the Act). To meet the
current definition, fuel or fuel additives must possess, at the time of
manufacture, all of the physical and chemical characteristics of an
unleaded gasoline as specified in ASTM Standard D 4814-88 for at least
one of the Seasonal and Geographical Volatility Classes specified in
the standard. EPA proposes to amend the definition to allow some
additional flexibility for the vapor/liquid ratio specification for
fuel introduced into commerce in the state of Alaska. In the ``Rules
and Regulations'' section of this Federal Register, we are amending the
``substantially similar'' definition as a direct final rule without a
prior proposed rule. If we receive no adverse comment, we will not take
further action on this proposed rule.
DATES: Comments must be received by May 27, 2008.
ADDRESSES: Submit your comments, identified by Docket ID No. EPA-HQ-
OAR-2007-0071, by mail to Air and Radiation Docket, Environmental
Protection Agency, Mailcode: 2822T, 1200 Pennsylvania Ave., NW.,
Washington, DC 20460. Comments may also be submitted electronically or
through hand delivery/courier by following the detailed instructions in
the ADDRESSES section of the direct final rule located in the rules
section of this Federal Register.
FOR FURTHER INFORMATION CONTACT: Jaimee Dong, Compliance and Innovative
Strategies Division, Office of Transportation and Air Quality, Office
of Air and Radiation, Environmental Protection Agency, Mail Code 6406J,
1200 Pennsylvania Avenue, Washington, DC 20460; telephone number: (202)
343-9672; fax number: (202) 343-2800; e-mail address:
Dong.Jaimee@epa.gov.
SUPPLEMENTARY INFORMATION:
I. Why Is EPA Issuing This Proposed Rule?
This document proposes to revise the ``substantially similar''
interpretive rule. EPA is not statutorily obligated to conduct notice
and comment rulemaking when amending this interpretive rule. See APA
section 553(b)(A); CAA section 307(d). However, as it has done when
previously amending this rule, EPA desires to provide an opportunity
for the public to comment on this amendment. We have published a direct
final rule amending the ``substantially similar'' interpretive rule in
the ``Rules and Regulations'' section of this Federal Register because
we view this as a noncontroversial action and anticipate no adverse
comment. We have explained our reasons for this action in the preamble
to the direct final rule.
If we receive no adverse comment, we will not take further action
on this proposed rule. If we receive adverse comment, we will withdraw
the direct final rule and it will not take effect. We would address all
public comments in any subsequent final rule based on this proposed
rule.
We do not intend to institute a second comment period on this
action. Any parties interested in commenting must do so at this time.
For further information, please see the information provided in the
ADDRESSES section of this document.
II. General Information
A. Does This Action Apply to Me?
Entities potentially affected by this action include those involved
with the production or importation of unleaded gasoline for use in
Alaska. Categories and entities affected by this action include:
[[Page 22319]]
--------------------------------------------------------------------------------------------------------------------------------------------------------
Category NAICS codes \a\ SIC codes \b\ Examples of potentially regulated entities
--------------------------------------------------------------------------------------------------------------------------------------------------------
Industry..................................... 324110 2911 Petroleum Refiners.
Industry..................................... 422710 5171 Gasoline Marketers and Distributors.
422720 5172 .....................................................................
Industry..................................... 484220 4212 Gasoline Carriers.
484230 4213 .....................................................................
--------------------------------------------------------------------------------------------------------------------------------------------------------
\a\ North American Industry Classification System (NAICS).
\b\ Standard Industrial Classification (SIC) system code.
This table is not intended to be exhaustive, but rather provides a
guide for readers regarding entities likely to be affected by this
action; however, other types of entities not listed in the table could
also be affected. To determine whether your entity is affected by this
action, you should examine the applicability criteria of Parts 79 and
80 of title 40 of the Code of Federal Regulations. If you have any
question regarding applicability of this action to a particular entity,
consult the person in the preceding FOR FURTHER INFORMATION CONTACT
section.
B. 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.
3. Docket Copying Costs. You may be charged a reasonable fee for
photocopying docket materials, as provided by 40 CFR Part 2.
III. Statutory Background
Section 211(f)(1) of the Act makes it unlawful for any manufacturer
of a fuel or fuel additive to first introduce into commerce, or to
increase the concentration in use of, any fuel or fuel additive for use
in motor vehicles manufactured after model year 1974 which is not
substantially similar to any fuel or fuel additive utilized in the
certification of any model year 1975, or subsequent model year, vehicle
or engine under section 206 of the Act. An EPA interpretive rule,
published at 46 FR 38582 (July 28, 1981) and amended at 56 FR 5352
(February 11, 1991), defines the term ``substantially similar'' for
unleaded gasoline. Under this definition, unleaded gasoline that meets
several conditions, including complying with the physical and chemical
specifications of ASTM Standard D 4814-88 for at least one of the
Seasonal and Geographical Volatility classes specified in the standard,
is considered substantially similar. Further conditions are described
in the interpretive rule and its amendment.
IV. Need for Action
Discussions with an Alaskan refiner have highlighted the need for
an amendment to the definition of ``substantially similar'' for
unleaded gasoline. Currently, manufacturers of gasoline for Alaska may
not use a temperature below 41 degrees Celsius when testing the vapor-
liquid (V/L) ratio of the fuel and still be within the current
definition of ``substantially similar.'' This amendment would allow
manufacturers producing unleaded gasoline for use only in Alaska during
the winter months to use a minimum test temperature of 35 degrees
Celsius when testing for a maximum V/L ratio of 20 instead of requiring
a V/L test temperature of 41 degrees Celsius.
ASTM D 2533 is a test method that covers a procedure for measuring
the volume of vapor formed at atmospheric pressure from a given volume
of gasoline. The ratio of these volumes is expressed as the V/L ratio
of the gasoline at the temperature of the test. The tendency of a fuel
to vaporize in common automobile fuel systems is indicated by the V/L
ratio of that fuel at conditions approximating those in critical parts
of the fuel system. Allowing a lower test temperature means that the
vapor fraction of the fuel may be higher.
The extreme cold of Alaska during the winter months increases the
risk that engines using typical gasoline blends will suffer from
difficulty in cold starting. A higher vapor fraction improves mixing of
the fuel with air, which in turn improves cold starting. Because the
automotive fuel system is closed, the lower test temperature of 35
degrees Celsius compared to 41 degrees Celsius in the winter months is
unlikely to significantly increase evaporative emissions. In addition,
Alaska presently does not possess ozone non-attainment areas, most
likely due to the cold temperatures observed in Alaska. Therefore, in
the Agency's judgment, the impact on emissions would not be significant
and this increased flexibility will allow refiners to provide a fuel
more suitable to the climatic conditions of Alaska.
EPA invites comment from all interested parties on this proposed
interpretive rule revision.
V. Statutory and Executive Order Reviews
See Section V in the direct final rule amending the ``substantially
similar'' interpretive rule in the ``Rules and Regulations'' section of
this Federal Register for a discussion of the applicable statutes and
executive orders.
[[Page 22320]]
Dated: April 17, 2008.
Stephen L. Johnson,
Administrator.
For the reasons set forth above, EPA proposes to amend the
definition of substantially similar as follows:
Definition--Substantially Similar
EPA will treat a fuel or fuel additive for general use in light-
duty vehicles manufactured after model year 1974 as substantially
similar to any fuel or fuel additive utilized in the certification of
any model year 1975, or subsequent model year vehicle or engine, under
section 206 of the Act, i.e., ``substantially similar,'' if the
following criteria are met.
(1) The fuel must contain carbon, hydrogen, and oxygen, nitrogen,
and/or sulfur, exclusively,\1\ in the form of some combination of the
following:
---------------------------------------------------------------------------
\1\ Impurities which produce gaseous combustion products (i.e.,
products which exist as a gas at Standard Temperature and Pressure)
may be present in the fuel at trace levels. An impurity is that
substance which is present through contamination, or remains
naturally, after processing of the fuel is completed.
---------------------------------------------------------------------------
(a) Hydrocarbons;
(b) Aliphatic ethers;
(c) Aliphatic alcohols other than methanol;
(d) (i) Up to 0.3 percent methanol by volume;
(ii) Up to 2.75 percent methanol by volume with an equal volume of
butanol, or higher molecular weight alcohol;
(e) A fuel additive \2\ at a concentration of no more than 0.25
percent by weight which contributes no more than 15 ppm sulfur by
weight to the fuel.
---------------------------------------------------------------------------
\2\ For the purposes of this interpretive rule, the term ``fuel
additive'' refers only to that part of the additive package which is
not hydrocarbon.
---------------------------------------------------------------------------
(2) The fuel must contain no more than 2.0 percent oxygen by
weight, except fuels containing aliphatic ethers and/or alcohols
(excluding methanol) must contain no more than 2.7 percent oxygen by
weight.
(3) The fuel must possess, at the time of manufacture, all of the
physical and chemical characteristics of an unleaded gasoline as
specified in ASTM Standard D 4814-88 for at least one of the Seasonal
and Geographical Volatility Classes specified in the standard, with the
exception of fuel introduced into commerce in the state of Alaska. For
fuel introduced into commerce in the state of Alaska, all of the
requirements of this section (3) apply, with the exception of the test
temperature for a maximum Vapor/Liquid Ratio (V/L) of 20, which shall
be a minimum of 35[deg]C (95[deg]F) for the period from September 16
through May 31.
(4) The fuel additive must contain only carbon, hydrogen, and any
one or all of the following elements: Oxygen, nitrogen, and/or
sulfur.\3\
---------------------------------------------------------------------------
\3\ Impurities which produce gaseous combustion products may be
present in the fuel additive at trace levels.
[FR Doc. E8-8945 Filed 4-24-08; 8:45 am]
BILLING CODE 6560-50-P
