MEMORANDUM
SUBJECT:
Exhaust
Emission
Certification
Results
for
Model
Years
2004
to
2006,
Cold
Hydrocarbon
Data
FROM:
Brent
Lignell,
Engineer
Assessment
and
Standards
Division
TO:
Docket
EPA­
HQ­
OAR­
2005­
0036
Attached
to
this
memorandum
are
exhaust
emissions
certification
data
for
2004
to
2006
model
year
highway
light­
duty
vehicles,
light­
duty
trucks,
and
medium­
duty
passenger
vehicles
from
the
Environmental
Protection
Agency's
(
EPA)
Certification
and
Fuel
Economy
Information
System
(
CFEIS).
1
These
data
are
from
a
November
30,
2005,
query
of
the
exhaust
emissions
data
in
CFEIS
for
vehicles
that
submitted
cold
temperature
hydrocarbon
emissions
data
along
with
the
required
cold
temperature
carbon
monoxide
data.

The
hydrocarbon
emissions
data
were
used
for
the
development
of
the
cold
temperature
non­
methane
hydrocarbon
program
in
the
Mobile
Source
Air
Toxics
(
MSAT)
Notice
of
Proposed
Rulemaking
signed
by
the
EPA
Administrator
on
February
28,
2006.
The
data
were
used
to
demonstrate
the
feasibility
of
the
proposed
standard.
A
more
detailed
discussion
of
the
data
and
the
methods
by
which
data
were
analyzed
are
discussed
in
the
Regulatory
Impact
Assessment,
Chapter
5
"
Vehicle
Technological
Feasibility."

Attachments
____________________________
1
The
Certification
and
Fuel
Economy
Information
System
(
CFEIS)
is
EPA's
Relational
Database
Management
System
(
RDBMS)
for
processing
vehicle
emissions
and
fuel
economy
information.
The
information
in
CFEIS
is
gathered
from
automobile
manufacturers,
testing
laboratories,
and
EPA
analysts,
and
it
is
used
to
determine
if
a
particular
car
or
truck
is
in
compliance
with
federal
regulations
so
EPA
can
verify
it
for
sale
in
the
United
States.
The
EPA
web
site
for
CFEIS
is
as
follows:
http://
www.
epa.
gov/
otaq/
cfeis.
htm.
