Jefferson
County
Technical
Support
Documentation
Summary
Jefferson
County
has
a
land
area
of
274
square
miles
and
is
located
in
the
Ridge
and
Valley
region
of
the
East
Grand
Division
east
of
Knoxville
along
the
I­
81
corridor.
It
is
contiguous
to,
but
not
part
of,
the
Knoxville
MSA.
The
predominate
wind
direction
and
speed
is
from
the
southwest
at
7
to
10
knots.

For
the
2001­
2003
monitoring
period,
the
ozone
monitor
47­
089­
002­
1,
located
in
Jefferson
County
shows
an
8­
hour
design
value
of
0.091
parts
per
million
(
ppm)
which
would
be
classified
as
nonattainment.

Based
on
projections
to
2002
from
the
2000
census
data,
there
are
45,801
persons
living
in
Jefferson
County.
This
indicates
a
population
density
of
167
persons
per
square
mile.
The
population
of
Jefferson
County
is
approximately
75.3%
rural
with
the
remaining
24.7%
living
in
incorporated
areas.
The
population
is
expected
to
increase
by
13%
between
2000
and
2010.
Based
on
the
2002
population
data
for
the
entire
Knoxville
MSA,
if
Jefferson
County
were
included,
Jefferson
County
would
represent
approximately
6%
of
the
total
population.

Point
source
NOX
emissions
from
Jefferson
County
were
estimated
at
0.10
ton/
day
in
1999
which
represents
less
than
one
percent
of
the
81.10
ton/
day
of
overall
NOX
point
source
emissions
from
the
Knoxville
MSA
area.
Point
source
VOC
emissions
were
estimated
at
5.71
ton/
day
in
1999
which
represents
approximately
7%
of
the
80.25
ton/
day
of
overall
VOC
point
source
emissions
from
the
Knoxville
MSA
area.

For
NOX
and
VOC
control,
point
sources
located
within
Jefferson
County
are
subject
to
Prevention
of
Significant
Deterioration
(
PSD)
requirements,
Control
Technology
Guideline
Reasonable
Available
Control
Technology
(
CTG
RACT)
requirements,
Maximum
Achievable
Control
Technology
(
MACT)
requirements
for
Hazardous
Air
Pollutants
(
HAP),
and
New
Source
Performance
Standards
(
NSPS).

Mobile
source
NOX
emissions
from
Jefferson
County
were
estimated
at
16.10
ton/
day
in
1999
which
represents
approximately
12%
of
the
136.80
ton/
day
of
overall
NOX
mobile
source
emissions
from
the
Knoxville
MSA
area.
VOC
emissions
were
estimated
at
6.52
ton/
day
in
1999
which
represents
approximately
8%
of
the
77.52
ton/
day
of
overall
VOC
mobile
source
emissions
from
the
Knoxville
MSA
area.
Commuting
traffic
from
surrounding
counties
into
Jefferson
County
is
high.
Commuting
traffic
from
Jefferson
County
into
surrounding
counties
is
significant.

Preliminary
analysis
of
the
2003
ozone
data
for
the
representative
monitor
indicates
that
the
2001­
2003
design
value
will
be
approximately
0.091
ppm.
Jefferson
County
represents
less
than
one
percent
of
the
NOX
point
source
emissions
and
about
7%
of
the
VOC
emissions
with
mobile
source
emissions
of
12
and
8%
respectively.
These
emissions
are
primarily
located
along
or
near
the
Hwy
11
and
I
40
corridors
through
the
county.
For
these
reasons
a
partial
county
area
extending
from
I
40
northward
to
include
all
of
Jefferson
County
beyond
the
interstate
should
be
designated
nonattainment.
