1
Date:
August
23,
2003
Subject:
Telephone
Conference
Summary
­
EPA
and
representatives
from
Cleveland­
Cliffs
and
Tilden
Mining
From:
Chris
Sarsony,
Alpha­
Gamma
Technologies,
Inc
To:
Docket
OAR­
2002
 
0039
I.
Purpose
The
primary
purpose
of
these
meetings
was
to
discuss
why
continuous
opacity
monitors
may
not
work
on
taconite
indurating
furnace
stacks.

II.
Date
May
07
and
08,
2003
III.
Attendees
U.
S.
Environmental
Protection
Agency
Conrad
Chin,
OAQPS/
ESD/
MG
Industry
Representatives
John
Meier,
Cleveland­
Cliffs
Leonard
Parker,
Tilden
Mining
Alpha­
Gamma
Technologies
Chris
Sarsony
IV.
Discussion
Tilden
contacted
Land
Instruments
regarding
their
Premier
COMS
model.
This
model
will
not
work
on
indurating
furnace
stacks
due
to
the
high
moisture
content
of
the
stack
exhaust
(
10%)
and
the
variability
of
the
moisture
content
of
the
stack
exhaust.
Also,
the
premier
model
will
not
work
properly
when
the
temperature
fluctuates
significantly,
as
is
the
case
in
their
indurating
furnace
stacks.

Tilden
indicated
that
they
are
currently
planning
to
install
a
COMS
on
one
of
their
indurating
furnace
stacks
on
a
trial
basis.
They
stated
that
they
will
not
know
how
well
it
OAR­
2002­
0039
IV­
E­
16
2
works
until
they
try
it.
They
have
received
conflicting
information
on
how
the
high
moisture
content
of
the
stack
exhaust
will
affect
the
performance
of
COMS.

With
regard
to
COMS
they
are
concerned
about
the
following
three
things:
°
plugging
of
the
COMS,
°
being
able
to
reproduce
the
COMS
results,
and
°
how
accurately
the
COMS
readings
represent
emissions
of
PM.

Once
the
COMS
is
installed
they
will
share
their
data
with
the
EPA.
