(c)(1)(C) thereof on such barrel as the fraction of 
such gallon of gas is of the whole barrel.’’. 
(3) CREDIT FOR ALCOHOL FUEL, BIODIESEL, 
AND
ALTERNATIVE
FUEL
MIXTURES.—Section 
6426(a) of the Internal Revenue Code of 1986 is 
amended by striking ‘‘and’’ at the end of paragraph 
(1), by striking the period at the end of paragraph 
(2) and inserting a comma, and by inserting after 
paragraph (2) the following: 
‘‘(3) against so much of the tax imposed by sec-
tion 4611 as is attributable to the carbon dioxide 
equivalent rate of tax under subsection (c)(1)(C) an 
amount equal to the credit described in subsection 
(c), determined on the same fraction of the amount 
of such tax as the number of gallons of diesel used 
by the taxpayer in producing any biodiesel mixture 
for sale or use in a trade or business of the tax-
payer, and 
‘‘(4) against the tax imposed by section 4611A 
an amount equal to the sum of the credits described 
in subsections (b), (c), and (e), determined on the 
same fraction of the amount of such tax as the num-
ber of gallons of alcohol, biodiesel, or alternative fuel 
used by the taxpayer in producing any fuel mixture 
of taxable fuel.’’. 
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(4) FUELS
NOT
USED
FOR
TAXABLE
PUR-
POSES.—Section 6427 of the Internal Revenue Code 
of 1986 is amended by redesignating subsection (p) 
as subsection (q) and by inserting after subsection 
(o) the following: 
‘‘(p) SPECIAL RULE FOR CARBON DIOXIDE EQUIVA-
LENT RATE.—For purposes of this section, in the case of 
a gallon of fuel refined from a barrel of crude oil or petro-
leum product on which tax was imposed under section 
4611 at the carbon dioxide equivalent rate of tax under 
subsection (c)(1)(C) thereof, or produced from methanol, 
ethanol, or biodiesel on which tax was imposed under sec-
tion 4611A, if the sale or use of such fuel would give rise 
to a payment under this section but for the fact that such 
fuel was taxed under section 4611 or 4611A and not sec-
tion 4041 or 4081— 
‘‘(1) this section shall be applied as if such fuel 
had been taxed under section 4041 or 4081, and 
‘‘(2) the rate at which tax was imposed under 
section 4611 or 4611A with respect to such fuel 
shall be— 
‘‘(A) in the case of tax imposed under sec-
tion 4611(c)(1)(C), the same fraction of such 
tax on such barrel as the fraction of a gallon 
of such fuel is of the whole barrel, and 
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‘‘(B) in the case of tax imposed under sec-
tion 4611A, the same fraction of the amount of 
such tax as the amount of fuel giving rise to a 
payment under this section.’’. 
(e) EFFECTIVE DATE.—The amendments made by 
this section shall take effect on January 1, 2016. 
SEC. 4. LIFE-CYCLE EMISSIONS. 
(a) CARBON DIOXIDE EMISSIONS REPORT.—Not 
later than the first llll occurring at least 1 year 
after the date of enactment of this Act, the Administrator 
shall transmit to the Internal Revenue Service and make 
public a report on the total life-cycle emissions of carbon 
dioxide for each covered transportation fuel, expressed in 
tons of carbon dioxide emissions per barrel of fuel or an 
appropriate alternate measure. Such report shall take into 
account the differences in carbon dioxide emissions per 
barrel of fuel across different regions and countries due 
to means of resource extraction and production, transpor-
tation, and other factors, with each covered transportation 
fuel being as regionally specific as determined by the Ad-
ministrator. 
(b) ADDITION
OF
COVERED
TRANSPORTATION 
FUEL.—The Administrator shall— 
(1) from time to time determine which trans-
portation fuels have achieved a sufficient share of 
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the on-road transportation fuel market to warrant 
being considered a covered transportation fuel, and 
(2) update the report transmitted under sub-
section (a), and transmit such updated report to 
Congress, with the specifications on the total life- 
cycle emissions of carbon dioxide and other green-
house gases for each fuel newly determined under 
paragraph (1) to be considered a covered transpor-
tation fuel. 
(c) DEFINITIONS.—In this section: 
(1) ADMINISTRATOR.—The term ‘‘Adminis-
trator’’ means the Administrator of the Environ-
mental Protection Agency. 
(2) BIOFUEL.—The term ‘‘biofuel’’ means the 
biofuel component of a transportation fuel. 
(3) COVERED
TRANSPORTATION
FUEL.—The 
term ‘‘covered transportation fuel’’ means gasoline, 
diesel fuel, biofuel, and any other fuel the Adminis-
trator determines has achieved a sufficient share of 
the on-road transportation fuel market to warrant 
regulation under this section. 
(4) GREENHOUSE GAS.—The term ‘‘greenhouse 
gas’’ has the same meaning given the term in sec-
tion 211(o)(1) of the Clean Air Act (42 U.S.C. 
7545(o)(1)). 
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(5) LIFE-CYCLE
EMISSIONS.—The term ‘‘life- 
cycle emissions’’ means emissions from all activities 
included in the production, transport, storage, and 
use of a fuel, including land use changes, means of 
resource extraction and production, transportation 
systems, and leakages. 
Æ 
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