Document ID: EPA-HQ-OW-2002-0049-0305
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2003-03-19T05:00Z

­­­­­
Forwarded
by
Tom
Wall/
DC/
USEPA/
US
on
12/
18/
02
05:
34
PM
­­­­­
Caroline
Ejimofor
12/
18/
02
04:
24
PM
To:
316b
<
316b@
tetratech­
ffx.
com>
cc:
Bruce
Kent/
P2/
R8/
USEPA/
US@
EPA,
Deborah
Nagle/
DC/
USEPA/
US@
EPA,
Ericp
Nelson/
R1/
USEPA/
US@
EPA,
Evelyn
MacKnight/
R3/
USEPA/
US@
EPA,
Isaac
Chen/
R6/
USEPA/
US@
EPA,
John
Dunn/
WWPD/
R7/
USEPA/
US@
EPA,
Karrie­
Jo
Shell/
R4/
USEPA/
US@
EPA,
Larry
Merrill/
R3/
USEPA/
US@
EPA,
Mark
Stein/
R1/
USEPA/
US@
EPA,
Moses
Chang/
R2/
USEPA/
US@
EPA,
Paulette
Johnsey/
R6/
USEPA/
US@
EPA,
Peter
Howe/
R5/
USEPA/
US@
EPA,
Phil
Colarusso/
R1/
USEPA/
US@
EPA,
Philip
Sweeney/
R2/
USEPA/
US@
EPA,
Robyn
Stuber/
R9/
USEPA/
US@
EPA,
Terry
Oda/
R9/
USEPA/
US@
EPA,
Tom
Wall/
DC/
USEPA/
US@
EPA
Subject:
Re:
316(
b)
Help
needed
­­­
From
Deborah
Nagle
Deborah,
For
the
Region
4
states
that
have
done
316b
analysis,
an
assumption
is
not
made
up
front
on
the
percentage
of
entrainment
survival.
They,
typically,
assess
the
entrainment
at
their
facility
and
report
the
approximate
survival
percentages
that
their
data
indicate
in
their
NPDES
applications.

Hope
this
helps.

Caroline
Ejimofor
NPDES
and
Biosolids
Permits
Section
Permits,
Grants
and
Technical
Assistance
Branch
EPA
Water
Management
Division
e­
mail
address:
Ejimofor.
Caroline@
epa.
gov
phone
number:
404­
562­
9209
fax
number:
404­
562­
8692
316b
<
316b@
tetratech­
f
fx.
com>
Sent:
12/
16/
2002
04:
04
PM
To:
Bruce
Kent/
P2/
R8/
USEPA/
US@
EPA,
Caroline
Ejimofor/
R4/
USEPA/
US@
EPA,
Ericp
Nelson/
R1/
USEPA/
US@
EPA,
Evelyn
MacKnight/
R3/
USEPA/
US@
EPA,
Isaac
Chen/
R6/
USEPA/
US@
EPA,
John
Dunn/
WWPD/
R7/
USEPA/
US@
EPA,
Karrie­
Jo
Shell/
R4/
USEPA/
US@
EPA,
Terry
Oda/
R9/
USEPA/
US@
EPA,
Larry
Merrill/
R3/
USEPA/
US@
EPA,
Mark
Stein/
R1/
USEPA/
US@
EPA,
Moses
Chang/
R2/
USEPA/
US@
EPA,
Paulette
Johnsey/
R6/
USEPA/
US@
EPA,
Peter
Howe/
R5/
USEPA/
US@
EPA,
Phil
Colarusso/
R1/
USEPA/
US@
EPA,
Philip
Sweeney/
R2/
USEPA/
US@
EPA,
Robyn
Stuber/
R9/
USEPA/
US@
EPA
cc:
Tom
Wall/
DC/
USEPA/
US@
EPA,
Deborah
Nagle/
DC/
USEPA/
US@
EPA
Subject:
316(
b)
Help
needed
­­­
From
Deborah
Nagle
I
need
some
help
from
the
field,
concerning
entrainment
survival.
We
have
been
reviewing
and
critiqueing
multiple
entrainment
survival
studies
for
the
316(
b)
Phase
II
NODA.
It
is
very
important
for
us
to
know
if
States
consider
entrainment
survival
when
making
316(
b)
determinations.
For
each
State
in
your
Region,
I
need
you
to
apply
one
of
the
answers
below:

ANSWERS
1.
Does
not
consider
entrainment
survival
at
all
2.
Assumes
entrainment
survival
is
0%
(
100%
mortality)
3.
Assumes
entrainment
survival
is
X%
(
fill
in
the
number
for
X)

I
need
this
information
quickly­­
this
week
if
possible.
Send
partial
information
instead
of
waiting
until
you
have
information
for
all
your
states.
Thanks
for
your
help.

­
Deborah