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to
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Signature:
Project
No.:
0172.02.005.050
 
DISTRIBUTION
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Project
Name:
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TELEPHONE
CALL
RECORD
Outgoing
Call
Date:
5/
23/
05
Time:
1:
06
PM
Company
Name:
DuPont
Belle,
WV
Contact
Name:
Dr.
Wayne
Appleton
Phone
No.:
(
304)­
357­
1723
Name:
Meghan
Kandle
Eastern
Research
Group
GENERAL
SUBJECT
:
Sodium
Nitrite
Discharges
Reported
to
TRI
TOPICS
DISCUSSED
AND
ACTION
TAKEN
I
called
Mr.
Tim
Albert
of
DuPont
on
Monday,
May
23
regarding
sodium
nitrite
releases
reported
to
TRI
for
2002.
The
DuPont
Belle
plant
reported
275,000
pounds
of
sodium
nitrite
released
to
surface
water
for
2002.
I
asked
Mr.
Albert
how
the
facility
estimates
those
discharges.
Mr.
Albert
said
he
would
transfer
my
question
to
Dr.
Wayne
Appleton.

Dr.
Appleton
returned
my
call
at
1:
06
PM.
Dr.
Appleton
said
that
the
sodium
nitrite
reported
to
TRI
is
actually
nitrite.
DuPont
has
developed
nitrogen
ratios
using
historical
analytical
data.
Based
on
past
wastewater
analyses,
DuPont,
Belle
has
determined
that
the
nitrite
to
nitrate
ratio
is
about
10
percent.
DuPont
estimates
the
nitrate
releases
using
a
nitrogen
balance
around
their
wastewater
treatment
system:

Nitrate
=
TKN
effluent
+
Ammonia
effluent
­
TKN
influent.

The
plant
also
assumes
that
about
1%
of
the
nitrate
gets
tied
up
in
the
biological
treatment
system.
The
release
is
then
calculated
by
assuming
that
nitrite
accounts
for
about
10%
of
the
nitrates.

Nitrite
=
0.10*
Nitrate
