EPA Announces Decision for
Regulation of Fuel and Fuel Additives:
Modification to Octa mix Waiver,
Correction Notice
The Environmental Protection Agency (EPA) is announcing a
correction notice on its June 14, 2012 decision of the Texas
MethanoPs gasoline-alcohol fuel waiver, also known as OCTAMIX,
to allow the use of Baker Hughes corrosion inhibitor, TOLAD
MFA-10A.
Elements of this Notice
The Environmental Protection Agency reconsidered a portion of a fuel waiver
granted under section 211 (f) of the Clean Air Act to the Texas Methanol Corpora-
tion (Texas Methanol) on June 14, 2012, by issuing a notice to approve the use of an
alternative corrosion inhibitor, TOLAD MFA-10A, in Texas Methanol's gasoline-
alcohol fuel, OCTAMIX. This correction notice explains that TOLAD MFA-10A is
to be blended into the final fuel at 42.7 milligrams per liter (mg/1) rather than at 25
mg/1, as indicated in the June 14 notice.
On October 14, 2011, Baker Hughes requested that EPA allow the use of its alter-
native corrosion inhibitor, TOLAD™ MFA-10A, at a concentration of 42 mg/1, in
the OCTAMIX gasoline-alcohol fuel blend which otherwise would not be allowed
under the OCTAMIX waiver.1 TOLADTM MFA-10A is a fuel additive formulation
consisting of a corrosion inhibitor. On January 20, 2012, EPA published a notice in
the Federal Register (77 FR 2979) announcing receipt of Baker Hughes's request and
inviting comment on it. The comment period closed on February 21, 2012. On June
14, 2012, EPA approved the use of TOLAD MFA-10A as an alternative corrosion
inhibitor in Texas Methanol's gasoline-alcohol fuel, OCTAMIX.2
EPA-HQ-O AR-2011 -0894-0001.
2 77 FR 35677.
SEPA
United States
Environmental Protection
Agency
Office of Transportation and Air Quality
EPA-420-F-12-069
October 2012
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In that June 14, 2012 decision notice, EPA mistakenly listed the approved concentration of
TOLADTM MFA'IOA as 25 mg/1 instead of the requested 42 mg/1. Today's notice corrects that
mistake and explains why the previous approval is still appropriate when using the concentra'
tion of 42 mg/1 as originally requested by Baker Hughes,
Health and Environmental Impacts
There will be no adverse health or environmental impact as a result of allowing this alterna-
tive corrosion inhibitor, TOLAD MFA'IOA, and the clean air benefits of EPA's gasoline motor
vehicle fuel programs will continue to be realized.
Gasoline Supply Benefits
This action may provide additional flexibility to the regulated community by allowing an
additional corrosion inhibitor for use in Texas Methanol's gasoline-alcohol fuel, also known
as OCTAMIX.
For More Information
You can access the rule and related documents on EPA's Office of Transportation and Air
Quality (OTAQ) Web site at:
www.epa.gov/otaq/fuels/registrationfuels/notices.htm
For more information on this rule, please contact Joe Sopata at:
U.S. Environmental Protection Agency
Office of Transportation and Air Quality (6406J)
1200 Pennsylvania Avenue NW
Washington, DC 20460
(202) 343-9034
E-mail: sopata.joe@epa.gov
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