Office of Transportation                                EPA420-F-05-014
                   and Air Quality                                       November 2005
United States
Environmental Protection
Agency

                                                      the
                                            on                   in the

                               the
                    Program
                   The U.S. Environmental Protection Agency (EPA) is amending the
                   provisions in the gasoline deposit control additive regulations regarding
                   the allowed variability in the composition and concentration of deposit
                   control additives. All gasoline used in the United States must contain
                   additives that have been certified by EPA in order to help decrease
                   vehicle emissions. Changes in the rule will assist regulated entities with
                   program compliance while maintaining the environmental benefits of the
                   gasoline deposit control program.
                   Background
                   Deposits that form in the engines and fuel supply systems of gasoline-powered
                   motor vehicles have been shown to increase emissions of harmful air pollut-
                   ants. On July 5,1996, EPA established a gasoline deposit control additive
                   program to ensure that all gasoline used in the United States contains additives
                   that limit the formation of such deposits. These additives must be certified
                   using EPA-specified test procedures. During certification, additive manufac-
                   turers must provide EPA with information on additive composition. To ensure
                   that in-use additives meet EPA requirements, manufacturers are required to
                   limit variation in the composition of additive production batches from that
                   reported during certification.

-------
Summary of Amendments
This final rule amends and clarifies the provisions regarding variability in the
composition and concentration of additives certified under the gasoline deposit
control program. The amendments include: 1) allowing flexibility in the formula-
tion of the non-detergent active components in gasoline additive packages
provided that the level of deposit control protection is not reduced; and 2)
clarifying that the concentration of the detergent-active components in additive
production batches may exceed the minimum required level established during
certification testing. The changes to the regulatory requirements made by this
action addresses additive manufacturer concerns that compliance with the
previous requirements would be burdensome and difficult.
Health      Environmental
The regulatory changes contained in this final rule do not affect the level
of deposit control protection and associated emissions benefits under
EPA's gasoline deposit control program. Since non-detergent active additive
components do not influence the level of deposit control protection, the addi-
tional flexibility in the composition of these components provided by this rule
will not affect the environmental benefits of the gasoline deposit control pro-
gram.
Economic  Impact
The regulatory amendments contained in this rule reduce the burden of compli-
ance for all regulated parties including small entities. This final rule does not
impose new information collection requirements or increase the information
collection burden on the regulated community.
For More Information
You can access the final rule and related documents on the Office of
Transportation and Air Quality (OTAQ) Web site at:

    www. epa. gov/otaq/additive .htm

For further information on this final rule, please contact Jeff Herzog at:

    U.S. Environmental Protection Agency
    Office of Transportation and Air Quality
    Assessment & Standards Division
    2000 Traverwood Drive
    Ann Arbor, MI 48105
    (734)214-4227
    E-mail: herzog.jeff@epa.gov

-------