Document ID: EPA-HQ-OAR-2002-0039-0046
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2003-08-28T04:00Z

1
Date:
August
25,
2003
Subject:
Meeting
Summary
­
EPA
and
representatives
from
Northshore
Mining
From:
Chris
Sarsony,
Alpha­
Gamma
Technologies,
Inc
To:
Docket
OAR­
2002
 
0039
I.
Purpose
The
primary
purpose
of
the
meeting
was
to
discuss
the
parametric
monitoring
of
wet
ESP
at
Northshore.

II.
Date
June
9,
2003
III.
Attendees
U.
S.
Environmental
Protection
Agency
Conrad
Chin,
OAQPS/
ESD/
MG
Northshore
Representatives
Dave
Skolasinski,
Northshore
Mining
Alpha­
Gamma
Technologies
Chris
Sarsony
IV.
Discussion
A.
Parametric
Monitoring
for
Wet
ESP
°
Northshore
monitors
the
inlet
and
outlet
temperature
for
their
ESP,
but
they
do
not
know
how
much
of
an
effect
temperature
has
on
HAP
emissions.
Waterflow
seems
to
have
the
greatest
impact
on
emissions
for
their
wet
ESP.
Voltage
and
current
does
not
seem
to
have
a
significant
impact
on
emissions.
Their
wet
ESPs
are
operating
more
like
wet
scrubbers
than
ESPs.
They
do
have
the
capability
of
monitoring
the
current
and
voltage
of
each
ESP
if
required.
°
Northshore's
wet
ESPs
contain
concentric
cylinders
that
get
scale
buildup
over
OAR­
2002­
0039
IV­
E­
17
2
time.
According
to
Northshore's
representative
the
amount
of
scale
buildup
appears
to
have
no
effect
on
emissions
(
no
data
was
provided
to
support
this).

°
Northshore
requested
that
the
rule
contain
the
flexibility
to
submit
a
monitoring
plan
for
alternative
monitoring
parameters.
The
EPA
explained
that
the
proposed
rule
allowed
that
flexibility.

B.
Ore
Crushing
and
Handling
­
Northshore
does
not
know
whether
the
emission
units
controlled
by
older
multiclones
will
be
able
to
meet
the
emission
limit
in
the
rule.
Only
one
or
two
of
these
units
have
been
tested.
All
of
the
emission
units
controlled
by
baghouses
have
emissions
around
0.002
gr/
dscf.
Therefore,
units
controlled
by
baghouses
will
meet
the
proposed
emission
limit.

C.
Finished
Pellet
Handling
­
Even
with
averaging
the
emission
units
controlled
by
rotoclones
will
not
be
able
to
meet
the
proposed
emission
limit.