Storm
Water
Runoff
Data
at
Creosote
Facilities
Effluent
Limitations
Guidelines
Calculation
of
Toxic
Weighting
Factor
Using
Samples
With
at
Least
One
Positive
Result
for
a
PAC
Chemical
PAC
Number:
1
2
4
5
7
8
11
18
1
2
4
5
7
8
11
18
Chemical:
Benz(
a)
anthracene
Benzo(
b)
fluoranthene
Benzo(
k)
fluoranthene
Fluoranthene
(
Benzo(
j,
k)

fluorene)
Chrysene
(
Benzo(
a)
phenanthrene)
Benzo(
a)

pyrene
Dibenzo(
a,
h)

anthracene
Indeno(
1,2,3­

cd)
pyrene
Benz(
a)
anthracene
Benzo(
b)
fluoranthene
Benzo(
k)
fluoranthene
Fluoranthene
(
Benzo(
j,
k)

fluorene)
Chrysene
(
Benzo(
a)
phenanthrene)
Benzo(
a)

pyrene
Dibenzo(
a,
h)

anthracene
Indeno(
1,2,3­

cd)
pyrene
CAS
Number:
0056­
55­
3
00205­
99­
2
00207­
08­
9
00206­
44­
0
00218­
01­
9
00050­
32­
8
00053­
70­
3
00193­
39­
5
0056­
55­
3
00205­
99­
2
00207­
08­
9
00206­
44­
0
00218­
01­
9
00050­
32­
8
00053­
70­
3
00193­
39­
5
Sample
Number
Rain,
inches
µ
g/
l
µ
g/
l
µ
g/
l
µ
g/
l
µ
g/
l
µ
g/
l
µ
g/
l
µ
g/
l
rain
x
conc
(
inches
x
µ
g/
l)
rain
x
conc
(
inches
x
µ
g/
l)
rain
x
conc
(
inches
x
µ
g/
l)
rain
x
conc
(
inches
x
µ
g/
l)
rain
x
conc
(
inches
x
µ
g/
l)
rain
x
conc
(
inches
x
µ
g/
l)
rain
x
conc
(
inches
x
µ
g/
l)
rain
x
conc
(
inches
x
µ
g/
l)

6
<
20.0
<
20.0
<
20.0
42.00
<
20.0
<
20.0
<
100.
<
20.0
0
0
0
59
0
0
0
0
7
<
20.0
<
20.0
<
20.0
52.00
<
20.0
<
20.0
<
100.
<
20.0
0
0
0
73
0
0
0
0
8
<
20.0
<
20.0
<
20.0
68.00
<
20.0
<
20.0
<
100.
<
20.0
0
0
0
95
0
0
0
0
9
<
20.0
<
20.0
<
20.0
40.00
<
20.0
<
20.0
<
100.
<
20.0
0
0
0
56
0
0
0
0
10
<
10.0
<
10.0
<
10.0
18.000
<
10.0
<
10.0
<
10.0
<
10.0
0
0
0
8
0
0
0
0
11
<
10.0
<
10.0
<
10.0
18.000
<
10.0
<
10.0
<
10.0
<
10.0
0
0
0
8
0
0
0
0
12
<
10.0
<
10.0
<
10.0
14.000
<
10.0
<
10.0
<
10.0
<
10.0
0
0
0
6
0
0
0
0
27
<
2.00
<
5.00
<
5.00
3.000
<
2.00
<
2.00
<
5.00
<
5.00
0
0
0
3
0
0
0
0
28
3.000
8.000
9.000
20.000
6.000
<
2.00
<
5.00
<
5.00
3
8
9
21
6
0
0
0
29
<
2.00
<
5.00
<
5.00
15.000
4.000
<
2.00
<
5.00
<
5.00
0
0
0
16
4
0
0
0
30
5.000
5.000
<
5.00
29.000
6.000
<
2.00
<
5.00
<
5.00
5
5
0
30
6
0
0
0
31
5.000
5.000
<
5.00
36.000
7.000
<
2.00
<
6.00
<
6.00
5
5
0
38
7
0
0
0
32
5.000
<
5.00
<
5.00
33.000
6.000
<
2.00
<
5.00
<
5.00
5
0
0
35
6
0
0
0
35
<
2.00
<
5.00
<
5.00
3.000
<
2.00
<
2.00
<
5.00
<
5.00
0
0
0
3
0
0
0
0
36
<
2.00
<
5.00
<
5.00
11.000
3.000
<
2.00
<
5.00
<
5.00
0
0
0
33
9
0
0
0
37
<
2.00
<
6.00
<
6.00
12.000
3.000
<
2.00
<
6.00
<
6.00
0
0
0
36
9
0
0
0
38
3.000
<
6.00
<
6.00
17.000
4.000
<
2.00
<
6.00
<
6.00
9
0
0
51
12
0
0
0
39
3.000
<
5.00
<
5.00
18.000
4.000
<
2.00
<
5.00
<
5.00
9
0
0
54
12
0
0
0
40
<
2.00
<
6.00
<
6.00
14.000
3.000
<
2.00
<
6.00
<
6.00
0
0
0
42
9
0
0
0
41
<
2.00
<
5.00
<
5.00
14.000
4.000
<
2.00
<
5.00
<
5.00
0
0
0
42
12
0
0
0
42
<
2.00
<
5.00
<
5.00
8.000
<
2.00
<
2.00
<
5.00
<
5.00
0
0
0
24
0
0
0
0
43
<
2.00
<
5.00
<
5.00
7.000
<
2.00
<
2.00
<
5.00
<
5.00
0
0
0
21
0
0
0
0
44
<
2.00
<
5.00
<
5.00
7.000
<
2.00
<
2.00
<
5.00
<
5.00
0
0
0
21
0
0
0
0
48
<
5.00
<
5.00
<
5.00
9.70
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
13
0
0
0
0
49
<
5.00
<
5.00
<
5.00
13.30
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
17
0
0
0
0
50
<
5.00
<
5.00
<
5.00
9.80
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
13
0
0
0
0
51
<
5.00
<
5.00
<
5.00
19.40
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
19
0
0
0
0
52
14.50
13.80
<
5.00
95.90
17.90
<
5.00
<
5.00
<
5.00
15
14
0
96
18
0
0
0
53
13.60
10.70
<
5.00
87.90
17.30
<
5.00
<
5.00
<
5.00
14
11
0
88
17
0
0
0
54
19.200
14.800
<
4.70
97.20
19.800
5.600
<
4.70
<
4.70
21
16
0
107
22
6
0
0
55
6.10
<
4.70
<
4.70
34.30
6.90
<
4.70
<
4.70
<
4.70
7
0
0
38
8
0
0
0
56
<
4.70
<
4.70
<
4.70
15.70
<
4.70
<
4.70
<
4.70
<
4.70
0
0
0
17
0
0
0
0
57
<
5.00
<
5.00
<
5.00
5.300
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
10
0
0
0
0
58
<
5.00
<
5.00
<
5.00
5.000
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
9
0
0
0
0
59
<
5.00
<
5.00
<
5.00
5.000
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
9
0
0
0
0
60
<
5.00
<
5.00
<
5.00
25.000
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
35
0
0
0
0
61
<
5.00
<
5.00
<
5.00
8.300
<
5.00
<
5.00
<
5.00
<
5.00
0
0
0
12
0
0
0
0
Average:
1.52
2.09
1.55
0.24
25.16
3.02
0.15
0.00
0.00
32.22
3
2
0
34
4
0
0
0
43
%
of
PACs:
0.06
0.05
0.01
0.78
0.09
0.005
0.00
0.00
1.00
0.06
0.04
0.01
0.79
0.10
0.004
0.00
0.00
1.00
EPA
TWF:
180.9752
421.3560
42.1356
0.8030
2.1038
4283.5600
1693.0160
1.1388
6625.09
180.9752
421.3560
42.1356
0.8030
2.1038
4283.5600
1693.0160
1.1388
6625.09
Weighted
TWF:
11.75
20.25
0.32
0.63
0.20
20.12
0.00
0.00
53.27
10.61
15.86
0.25
0.64
0.21
16.64
0.00
0.00
44.20
Notes:
1)
Where
no
rainfall
amount
data
was
available
(
sample
numbers
6­
12),
the
average
rainfall
amount
from
the
other
listed
storms
was
used
in
the
flow­
weighted
toxic
weighting
factor
calculation.

2)
Concentrations
reported
as
being
above
detection
limits
(
positive)
are
shown
in
bold
type.

3)
"<"
indicates
that
the
chemical
being
monitored
for
was
not
found
at
levels
above
the
detection
limit
(
the
value
found
to
the
right
of
the
<).
In
these
cases,
a
concentration
of
zero
was
used.

Non­
Flow
Weighted
TWF
Computation
Flow
Weighted
TWF
Computation
Calculation
of
Non­

Flow
Weighted
TWF
Using
Reported
PAC
Concentrations
and
Zero
for
Non­

Detects
Calculation
of
Flow
Weighted
TWF
Using
Rainfall
Amounts
and
Reported
PAC
Concentrations
with
Zero
for
Non­

Detects
1.80
1.40
3.02
1.30
1.00
1.4
0.45
1.05
1.10
Flow
Wtd
TWFs
(
0DL)

May
25,
2005
H.
M.
Rollins
Co.,
Inc.

Gulfport,
Mississippi
