Todd
Hawes/
RTP/
USEPA/
US
05/
03/
2005
06:
24
PM
To
afraas@
omb.
eop.
gov,
Bill
Wehrum/
DC/
USEPA/
US@
EPA,
Peter
Tsirigotis/
RTP/
USEPA/
US@
EPA,
Lydia
Wegman/
RTP/
USEPA/
US@
EPA,
Joe
Paisie/
RTP/
USEPA/
US
cc
Subject
data
for
developing
model
plants
(
and
a
call
in
#
for
noon
meeting)

Below
is
a
summary
of
the
median
values
for
the
stack
parameters
of
the
top
five
non­
EGU
source
categories
in
terms
of
SO2
emissions.
In
developing
"
model
plant"
stack
parameters,
we
used
the
BART­
eligible
sources
identified
in
the
CAIR
modeling
platform
file
for
each
of
the
categories.
The
data,
presented
in
the
table
below,
are
all
median
values
and
are
based
on
sources
having
actual
SO2
emissions
greater
than
250
TPY.
Using
SO2
as
the
"
controlling
stack"
is
consistent
with
what
was
done
for
the
EGU
analysis
and
is
appropriate
since
particle
formation
is
initially
preferentially
driven
by
Sulfate.
Note
that
we
did
not
include
Nitric
Acid
plants
since
there
are
no
SO2
emissions
from
those
plants.
Also,
Chemical
Process
sources
were
not
included
because
there
were
only
two
SO2
sources
and
median
values
from
those
two
stacks
are
not
meaningful.
The
attached
spreadsheet
includes
the
raw
data.

Median
values
Stack
Height
Diameter
Temp.
flow
Velocity
#
records
from
CAIR
modeling
file
feet
feet
Fahrenheit
ft3/
sec
ft/
sec
Industrial
boilers
182
8.5
350
1833
37.4
472
Kraft
Pulp
Mills
234
8.5
339
2871
50.6
48
Petroleum
Refineries
177
7.1
550
1483
41.9
95
Portland
Cement
177
10.3
365
2895
41.2
85
Sulfuric
Acid
187
7.3
170
1457
41.4
59
[
attachment
"
model
plant
data.
xls"]
CALL
IN
#
for
12:
00
p.
m.
Wednesday:
919­
541­
4376
