Document ID: EPA-HQ-OW-2004-0032-0811
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2005-08-18T04:00Z

DuPont
­
EdgeMoor,
DE
Titanium
Dioxide
Plant
Responses
2002
TRI
Reported
Releases
to
Water
Material
Released
Dioxin
&
dioxin
like
compounds
Quantity
13.6
gms*
How
was
release
estimated?
Using
analysis
of
wastewater
and
measurement
of
flow
Was
wastewater
analyzed?
Yes
Wastewater
source?
Treated
process
water
outfall
Measured
concentrations?
pg/
L
(
see
congener
details
below)
No.
of
samples
analyzed?
3
Date(
s)
samples
collected?
1
in
1999
and
2
in
2002*
Detection
limit?
to
be
provided
later
Flow
measurement
method?
Continuous
weir
flowmeter
Source
of
released
material?
Unintentional
trace
reaction
byproduct
of
intermediate
production
in
TiO2
manufacturing
process
*
Note:
very
conservative
estimate
due
to
average
strongly
weighted
toward
much
higher
levels
in
1999
sample
compared
to
2002
samples
Material
Released
Hexachlorobenzene
Quantity
52.9
lbs.
How
was
release
estimated?
Using
1/
2
detection
limit
times
annual
wastewater
flow
Was
wastewater
analyzed?
Yes
Wastewater
source?
Treated
process
water
outfall
Measured
concentrations?
ND
No.
of
samples
analyzed?
1
Date(
s)
samples
collected?
2002
Detection
limit?
10
ug/
l
Flow
measurement
method?
Continuous
weir
flowmeter
Source
of
released
material?
Unintentional
trace
reaction
byproduct
of
intermediate
production
in
TiO2
manufacturing
process
Material
Released
Pentachlorobenzene
Quantity
15.9
lbs.
How
was
release
estimated?
Using
1/
2
detection
limit
times
annual
wastewater
flow
Was
wastewater
analyzed?
Yes
Wastewater
source?
Treated
process
water
outfall
Measured
concentrations?
ND
No.
of
samples
analyzed?
1
Date(
s)
samples
collected?
2002
Detection
limit?
3
ug/
l
Flow
measurement
method?
Continuous
weir
flowmeter
Source
of
released
material?
Unintentional
trace
reaction
byproduct
of
intermediate
production
in
TiO2
manufacturing
process
Material
Released
Manganese
Quantity
34,910
How
was
release
estimated?
Wastewater
analysis
(
prior
year)
times
total
annual
flow
Was
wastewater
analyzed?
Yes
Wastewater
source?
Treated
process
water
outfall.
Measured
concentrations?
3.3
mg/
l
Detection
limit?
N/
A
Date(
s)
samples
collected?
2000
Flow
measurement
method?
Continuous
weir
flowmeter
Source
of
released
material?
Process
raw
material
impurity
Material
Released
Polychlorinated
Biphenyls
Quantity
0.3
lbs
How
was
release
estimated?
Using
analysis
of
wastewater
and
stormwater
times
annual
flow
Was
wastewater
analyzed?
Yes
Wastewater
source?
Treated
process
water
and
stormwater
outfalls
Measured
concentrations?
Wastewater:
281.6
pg/
l
avg;
Stormwater:
202.7
ng/
l
avg.
No.
of
samples
analyzed?
Wastewater:
7
samples;
Stormwater:
3
samples
Date(
s)
samples
collected?
Wastewater
­
2002;
Stormwater
­
2001
Detection
limit?
3.1
­
458
pg/
l
Flow
measurement
method?
Wastewater:
Continuous
flowmeter;
Stormwater:
rainfall
times
area
Source
of
released
material?
Unintentional
trace
reaction
byproduct
of
intermediate
production
in
TiO2
manufacturing
process
Dioxin
&
DLCs­
Compound
Specific
Results
Analyte
Result*
(
pg/
l)

1,2,3,4,6,7,8­
HpCDF
28.5
ND
in
2002
1,2,3,4,7,8,9­
HpCDF
23.3
ND
in
2002
1,2,3,4,7,8­
HxCDF
15.8
ND
in
2002
1,2,3,6,7,8­
HxCDF
2.3
ND
in
2002
1,2,3,7,8,9­
HxCDF
2
ND
in
2002
2,3,4,6,7,8,­
HxCDF
2
ND
in
2002
1,2,3,4,7,8­
HxCDD
2.9
ND
in
2002
1,2,3,6,7,8­
HxCDD
3.2
ND
in
2002
1,2,3,7,8,9­
HxCDD
2.7
ND
in
2002
1,2,3,4,6,7,8­
HpCDD
5.2
ND
in
2002
OCDF
2708.3
OCDD
19.5
ND
in
2002
1,2,3,7,8­
PeCDF
4.7
ND
in
2002
2,3,4,7,8­
PeCDF
4.1
ND
in
2002
1,2,3,7,8­
PeCDD
1.5
ND
in
2002
2,3,7,8­
TCDF
2.3
ND
in
2002
2,3,7,8­
TCDD
1.7
ND
in
2002
Total
pg/
L
of
detected
&
non­
detected
congeners
2830
*
weighted
average
of
1999
and
2002
sample
results;
nondetected
values
=
ND/
2
DuPont
­
New
Johnsville,
TN
Titanium
Dioxide
Plant
Responses
2002
TRI
Reported
Releases
to
Water
Dioxin
&
dioxin
like
compounds
16.2
gms.
(
see
Note
1)
Using
analysis
of
wastewater
and
measurement
of
flow
Yes
Process
water
outfall.
pg/
L
(
see
congener
details
below)
No.
of
samples
analyzed?
1
Date(
s)
samples
collected?
08/
29/
00
1.41­
5.9
pg/
l
(
see
congener
details
below)
Continuous
weir
flowmeter
Note
1:
0.2
gms
less
than
16.4
gms
reported­
based
on
ND
=
0
for
congeners
not
detected
Hexachlorobenzene
188
lbs.

Yes
Treated
process
water
outfall
ND
No.
of
samples
analyzed?
1
Date(
s)
samples
collected?
2002
0.000001
g/
l
Continuous
weir
flowmeter
Pentachlorobenzene
117
lbs.
Using
empirical
ratio
of
PeCB
to
D&
DLC
found
at
another
site
No
Treated
process
water
outfall
N/
A
No.
of
samples
analyzed?
0
Date(
s)
samples
collected?
N/
A
N/
A
N/
A
Nickel
6500
lbs.

Yes
Treated
process
water
outfall
10
­
98
ug/
l;
average
=
32.6
No.
of
samples
analyzed?
53
Date(
s)
samples
collected?
Weekly
sampling
5
ug/
l
Continuous
weir
flowmeter
Process
raw
material
impurity
Unintentional
trace
reaction
byproduct
of
intermediate
production
in
TiO2
manufacturing
process
Unintentional
trace
reaction
byproduct
of
intermediate
production
in
TiO2
manufacturing
process
Unintentional
trace
reaction
byproduct
of
intermediate
production
in
TiO2
manufacturing
process
Using
1/
2
detection
limit
reported
for
sample
taken
for
NPDES
permit
application
times
annual
wastewater
flow
How
was
release
estimated?

Using
weekly
sample
analysis
and
associated
average
monthly
discharge
flows
How
was
release
estimated?
Quantity
How
was
release
estimated?

Source
of
released
material?
Was
wastewater
analyzed?
Wastewater
source?
Detection
limit?
Flow
measurement
method?

Source
of
released
material?

Material
Released
Measured
concentrations?

Detection
limit?
Flow
measurement
method?
Flow
measurement
method?

Wastewater
source?
Measured
concentrations?
Was
wastewater
analyzed?
Wastewater
source?
Measured
concentrations?

Detection
limit?

Source
of
released
material?

Material
Released
Quantity
Was
wastewater
analyzed?
Source
of
released
material?

Material
Released
Quantity
Wastewater
source?
Measured
concentrations?

Detection
limit?
Flow
measurement
method?
Material
Released
Quantity
How
was
release
estimated?
Was
wastewater
analyzed?
Chromium
3200
lbs.

Yes
Treated
process
water
outfall
ND
­
240
ug/
l;
average
=
17.4
No.
of
samples
analyzed?
53
Date(
s)
samples
collected?
Weekly
sampling
5
ug/
l
Continuous
weir
flowmeter
Process
raw
material
impurity
Dioxin
&
DLCs­
Compound
Specific
Results
Analyte
Sample
8­
29­
00
Detection
Limit
Value
used
at
ND
=
0
pg/
L
pg/
L
2,3,7,8­
TCDD
ND
1.55
0
1,2,3,7,8­
PeCDD
ND
1.51
0
1,2,3,4,7,8­
HxCDD
ND
3.1
0
1,2,3,6,7,8­
HxCDD
ND
3.47
0
1,2,3,7,8,9­
HxCDD
ND
3.08
0
1,2,3,4,6,7,8­
HpCDD
ND
2.64
0
OCDD
18.9
18.9
2,3,7,8­
TCDF
ND
3.11
0
1,2,3,7,8­
PeCDF
ND
1.5
0
2,3,4,7,8­
PeCDF
ND
1.41
0
1,2,3,4,7,8­
HxCDF
5.9
5.9
1,2,3,6,7,8­
HxCDF
ND
1.6
0
2,3,4,6,7,8,­
HxCDF
ND
1.76
0
1,2,3,7,8,9­
HxCDF
ND
2.58
0
1,2,3,4,6,7,8­
HpCDF
16.5
16.5
1,2,3,4,7,8,9­
HpCDF
ND
3.77
0
OCDF
148
148
Total
concentration
of
congeners
189.3
Was
wastewater
analyzed?
Using
weekly
sample
analysis
and
associated
average
monthly
discharge
flows
Source
of
released
material?
Wastewater
source?
Measured
concentrations?

Detection
limit?
Flow
measurement
method?
Material
Released
Quantity
How
was
release
estimated?