Document ID: EPA-HQ-OAR-2003-0083-0670
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2003-08-28T04:00Z

WARREN
COUNTY,
KENTUCKY
Warren
County
is
located
in
south
central
Kentucky.
Warren
County
is
located
approximately
60
miles
northeast
of
Nashville,
Tennessee.
Warren
2
Warren
County,
Kentucky
Warren
County
is
located
on
the
I­
65
South
interstate
corridor
and
is
located
in
Pennyrile
region
of
Kentucky.

Geography/
Topography
Warren
County,
Kentucky
is
situated
in
south
central
Kentucky.
Warren
County
has
a
land
area
of
545
square
miles.
The
county
is
located
south
of
Mammoth
Cave
National
Park
which
is
located
in
Edmonson
County,
Kentucky.

Meteorological
Information
Due
to
the
close
proximity
of
Nashville,
Tennessee,
meteorological
data
from
Nashville
was
used
for
this
south
central
Kentucky
area.
Wind
speed/
wind
direction
information
for
Nashville
shows
that
the
majority
of
the
time
for
the
period
1988
 
1992,
the
wind
in
the
Warren
County
area
came
from
the
southwest
and
typically
from
7­
10
knots.
(
See
figure
1­
A)
The
mean
high
temperature
for
July
for
the
area
from
1961
through
1990
was
90
°
F,
the
mean
low
was
69
°
F.
The
mean
precipitation
for
the
same
period
was
4.0
inches.

Planning
The
authority
for
air
quality
planning
in
the
Warren
County
area
resides
with
the
Kentucky
Natural
Resources
and
Environmental
Protection
Cabinet.
Transportation
planning
for
Warren
County
is
performed
by
the
Kentucky
Transportation
Cabinet.

Air
Monitoring
For
the
2000
 
2002
monitoring
period,
the
ozone
monitor
(
21­
227­
0008)
located
in
Warren
County
shows
an
8­
hour
design
value
of
.086
parts
per
million
(
ppm)
which
would
be
classified
as
a
county
in
violation
of
the
standard.
(
See
table
1­
A)

Population
Based
on
projections
to
2001
from
2000
census
data,
there
are
93,232
persons
living
in
Warren
County.
That
represents
approximately
171
persons
per
square
mile.
The
population
of
Warren
County
is
approximately
37%
rural
with
the
remaining
63%
living
in
incorporated
areas.
The
largest
city
in
Warren
County
is
Bowling
Green.
(
See
table
1­
C)
3
Warren
County's
population
from
1990
through
2000
increased
by
approximately
19%
(
77,720
to
92,522).
The
population
is
further
expected
to
increase
by
an
additional
17%
between
2000
and
2010.
(
See
table
1­
B)

Air
Emissions
Point
source
VOC
emissions
from
Warren
County
were
estimated
at
4.86
tons
per
summer
day
(
tpsd)
in
2001.
The
Warren
County
point
source
NOx
emissions
were
estimated
to
be
0.10
tpsd.
(
See
table
1­
D)

Point
sources
located
within
Warren
County
are
subject
to
PSD
requirements,
CTG
RACT
requirements,
Maximum
Achievable
Control
Technology
(
MACT)
requirements
for
sources
of
Hazardous
Air
Pollutants,
and
New
Source
Performance
Standards
(
NSPS).

Onroad
mobile
source
VOC
emissions
within
Warren
County
were
estimated
to
be
7.08
tpsd
in
2001.
Onroad
mobile
source
NOx
emissions
were
estimated
to
be
11.47
tpsd.
(
See
table
1­
D)

Commuting
traffic
from
other
counties
into
Warren
County
is
minimal,
and
the
commuting
traffic
from
Warren
County
into
other
counties
is
minimal.

Commuting
Classifications
Not
Significant
0­
10%
Minimal
11­
30%
High
31­
50%
Significant
51%
or
more
4
2001
VOC
Contribution
(
tons
per
summer
day)

2001
NOx
Contribution
(
tons
per
summer
day)
4.86
7.08
0
5
10
15
20
25
Warren
Mobile
Point
0.1
11.47
0
5
10
15
20
25
30
35
40
Warren
Mobile
Point
5
Conclusion
and
Recommendation
The
monitoring
data
and
growth
patterns
presented
indicate
that
Warren
County,
Kentucky,
should
be
designated
nonattainment
for
the
8­
hour
standard.
6
Warren
County,
Kentucky
Figure
1­
A
Wind
Rose
Patterns
Figure
1­
B
2001
Warren
County
VOC
and
NOx
Emissions
(
tons
per
summer
day)

11.94
11.57
0
2
4
6
8
10
12
14
Warren
VOC
NOx
7
Table
1­
A
Ozone
Design
Values
(
parts
per
million)

Monitor
2000
2001
2002
Design
Value
Warren
.088
.081
.090
.086
Table
1­
B
Warren
County
Kentucky
Population
Growth
Data
County
1990
2000
%
Growth
1990
 
2000
2010
%
Growth
2000
 
2010
Warren
77,720
92,522
19.0%
108,054
16.8%

Table
1­
C
2001
Estimated
Warren
County
Kentucky
Population
Kentucky
Estimated
Population
Warren
County
93,232
Table
1­
D
2001
Warren
County
VOC
and
NOx
Emissions
(
tons
per
summer
day)

VOC
NOx
County
Point
Mobile
Total
Point
Mobile
Total
Warren
4.86
7.08
11.94
0.10
11.47
11.57