316b
REGULATORY
DEVELOPMENT
TELEPHONE
LOG
Name
of
Caller:
John
Sunda,
SAIC
Date:
June
26,
2002
Company
Name:
Johnson
Screens
Street
Address:
New
Brighton,
MN
City/
State/
ZIP:

Person
Contacted:
Hank
Wells
&
Mark
Watson
Title:

Telephone
#:
800­
833­
9473
ext
287
(
used
this
#)
651­
638­
3287
(
Gave
this
direct
#)
In
brief
previous
contact
with
Al
Smith,
was
referred
to:
Linda
Cook
(
General
info)
Ext
218
(
left
message)
Hank
wells
(
design
info)
Ext
287
Mark
Watson
Hank
Wells
Asked
about
percent
open
area
for
coarse
mesh
traveling
screens
compared
to
fine
mesh
screens.
He
was
not
certain
about
traveling
screens
since
they
are
made
by
a
different
mfr.
Suggested
I
contact
Envirex.
He
said
their
fine
screens
could
range
from
as
low
as
30%
to
70­
80%
depending
on
spacing
and
wire
size.
He
sent
via
email
several
brochures
(
one
of
which
shows
table
with
open
area
as
a
function
of
spacing
and
3
available
wire
sizes).
He
said
percent
open
area
is
calculated
as
slot
width
divided
by
slot
width
plus
wire
width.
Said
that
when
they
provide
competitive
bids
with
traveling
screens
their
costs
usually
come
out
about
½
lower.
Mentioned
a
recent
job
in
Iowa
City,
IA,
I
think
it
was
a
water
plant.
He
said
Johnson
Scren
was
more
than
willing
to
assist
EPA
and
felt
it
was
important
that
EPA
got
good
information.
They
are
the
largest
supplier
of
t­
screens
in
the
US
He
also
asked
if
I
had
talked
to
Mark
Watson
Mark
Watson
Mark
Watson
called
later
in
the
day
(
responding
to
message
left
with
Linda)
He
was
not
able
provide
traveling
screen
%
open
area
info
but
offered
to
answer
questions
in
future.
We
briefly
discussed
retrofitting
traveling
screens.
He
said
that
one
solution
they
have
employed
was
to
install
a
plate
over
the
screen
opening.
Passive
screens
such
as
t­
screens
are
attached
to
the
front
of
the
plate.
He
said
they
sometimes
leave
one
or
two
traveling
screens
in
place
because
their
action
tends
to
help
sweep
debris
away.

He
said
that
all
three,
Linda,
Mark,
and
himself
could
be
contacted
to
answer
questions.
