Document ID: EPA-HQ-OAR-2003-0079-0976
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2005-11-08T05:00Z

1Although
some
8­
hour
ozone
nonattainment
areas
have
additional
areas
beyond
the
boundary
of
the
former
1­
hour
nonattainment
area
and
thus
would
be
faced
with
new
requirements
for
the
higher
classification.
8/
1/
05
8­
hr
O3
NAAQS
implementation
rule
 
phase
2
Voluntary
bump­
up
language
inserted
into
RFP
section
(
in
italics)

The
requirements
for
RFP
under
subparts
1
and
2,
as
described
above,
are
the
minimum
required
for
an
area.
More
reductions
may
be
necessary
for
attainment
within
the
nonattainment
area.
Moreover,
an
upwind
area
that
contributes
to
nonattainment
in
a
downwind
area
in
the
same
State
may
need
more
reductions
in
a
shorter
time
in
order
for
the
downwind
area
to
reach
attainment
by
its
required
attainment
date.
Although
we
believe
most
8­
hour
nonattainment
areas
will
attain
the
standard
by
their
statutory
attainment
date,
we
recognize
that
some
areas
classified
under
subpart
2
may
need
additional
time
beyond
the
statutory
attainment
date
for
their
area
to
attain
as
expediously
as
practicable.
As
discussed
in
the
Phase
1
Rule
(
69
FR
at
23959,
col.
3),
in
the
event
an
area
cannot
practicably
attain
by
the
maximum
date
for
its
classification,
the
Clean
Air
Act
provides
the
opportunity
for
more
time.
An
area
regulated
under
subpart
2
can
receive
a
later
maximum
attainment
date
through
a
State
request
to
bump­
up
to
a
higher
classification
(
e.
g.
from
moderate
to
serious).
The
Act
requires
EPA
to
grant
a
State
request
to
reclassify
an
area
to
a
higher
classification;
the
State
plan
still
must
provide
for
attainment
as
expeditiously
as
practicable.
Although
bump­
up
means
that
certain
additional
specified
requirements
apply,
an
area
may
already
be
meeting
most
or
all
of
these
specified
requirements
due
to
controls
previously
adopted
to
implement
the
1­
hour
ozone
standard.
This
is
because
some
areas
had
1­
hour
classifications
that
were
higher
(
and
more
restrictive)
than
the
areas'
8­
hour
classification,
1
and
because
the
Phase
1
final
implementation
rule
for
the
8­
hour
O3
NAAQS
contains
anti­
backsliding
provisions
generally
requiring
areas
to
continue
implementating
measures
required
for
the
1­
hour
classification.
Although
there
may
not
be
additional
mandatory
control
measures
required
because
the
areas
may
already
have
such
measures
in
place,
an
area
that
needs
more
time
to
attain
may
need
additional
emission
reductions
to
reach
attainment.
These
reductions
may
be
achieved
through
implementation
of
measures
that
are
necessary
to
demonstrate
RFP
requirements
or
additional
reductions
beyond
RFP
may
be
needed.
Preliminary
analyses
indicate
that
already
required
control
measures
(
e.
g.,
motor
vehicle
and
nonroad­
engine
rules,
CAIR,
etc.)
may
largely
or
fully
fulfill
reasonable
further
progress
requirements
for
many
areas
and
that
they
will
provide
substantial
progress
toward
attainment
for
most
areas.