June 21, 2006
1
NATIONAL BIODIESEL BOARD
FUEL QUALITY POLICY


Purpose: The American Society of Testing and Materials (ASTM) is the recognized
standard-setting body for fuels and additives in the United States. ASTM has adopted a
specification for pure biodiesel (ASTM D 6751) that is to be used in blends up to 20%
with diesel fuel which meets its respective specification (ASTM D 975). When biodiesel
that meets its specification is properly blended into diesel fuel which meets its
specification, and is handled according to proper fuel management techniques, the
resulting fuel is a high quality, premium diesel fuel which has been shown to perform
well in virtually any unmodified diesel engine. However, use of any fuel that does not
meet its quality specifications could cause performance problems or equipment damage,
and this includes biodiesel. The National Biodiesel Board (NBB) believes strongly that
rigorous adherence to D 6751 is important in order to protect consumers from
unknowingly purchasing substandard fuel, in order to maintain the integrity of the
nation’s fuel supply, and in order to protect the reputation of biodiesel as a high quality,
high performance fuel. Sale of off-spec fuel is usually a violation of federal and state
law. Several federal and state government agencies are responsible for the regulation and
enforcement of fuel quality in the United States. The National Biodiesel Board (NBB) is
a non-profit trade association and does not have authority to regulate or enforce fuel
quality. However, this “F uel Q uality P olicy” outlines the m easures that the N B B w ill
take to enhance overall fuel quality in the industry.

Government Adoption of ASTM D— 6751: ASTM D-6751: The National
Biodiesel Board is a strong proponent of ASTM D-6751. The National Biodiesel Board
expects each of its producer Members to be dedicated to the consistent production of
ASTM D-6751 compliant B100. The National Biodiesel Board will continue to urge the
adoption of ASTM D-6751 by every appropriate level of federal, state, and local
government as a legal requirement for the manufacture and sale of Biodiesel. As to
Member & Non-Member Producers: The National Biodiesel Board will, upon receiving
a complaint regarding fuel quality, offer the complainant all available information
regarding fuel quality enforcement efforts by any applicable state or federal government
agency.

ASTM Standards for Biodiesel Blends. ASTM is currently developing one or
more uniform standards for blends of B100 and diesel fuel. The National Biodiesel
Board is fully supportive of those efforts. When adopted, the National Biodiesel Board
will be an active and strong supporter of those ASTM standards.

BQ-9000 Certification. The National Biodiesel Board created the National
Biodiesel Accreditation Commission in 2000 and charged it with developing a
certification program for quality biodiesel producers and marketers. The resulting
certification program is BQ-9000. There are two certifications: Certified Marketer and
Accredited Producer. In either case, the certified party must possess a Quality Manual, a
Quality Control System, and employ best practices as required to assure the delivery of a