Louisville
Metro
Air
Pollution
Control
District
Periodic
Monitoring
Requirements
"
Periodic
Monitoring
Rule"

40
CFR
70.6(
a)(
3)(
i)(
B)

Each
permit
shall
contain
periodic
monitoring
sufficient
to
yield
reliable
data
from
the
relevant
time
period
that
are
representative
of
the
source's
compliance
with
the
permit.

Each
Permit
Shall
Contain...

The
actual
provisions
have
to
be
in
the
permit.

Requirement
to
prepare
a
monitoring
plan
is
not
enough
The
monitoring
must
be
done
at
the
source's
initiative,
not
the
permitting
authority's
Inspections
by
permitting
authorities
don't
count
For
federally
enforceable
emission
limits,
the
periodic
monitoring
requirements
must
also
be
federally
enforceable.

Periodic
Monitoring...

Periodic
The
frequency
of
the
monitoring
must
be
made
clear.

Continuous
(
e.
g.,
COMs,
CEMs,
PEMs)

Periodic
(
e.
g.,
hourly,
daily)

Monitoring
Includes
testing,
readings,
recordkeeping,
and
recording
Sufficient
to
Yield
Reliable
Data...

The
reliability
of
the
data
will
usually
be
obvious
from
the
method
Include
a
technical
justification
in
the
permit
record,
if
necessary
Emission
factors
Should
apply
to
the
particular
emission
unit
in
question
AP­
42
is
only
an
estimate
From
the
Relevant
Time
Period...

The
averaging
period
of
the
emission
limit
When
the
emission
limit
has
no
time
element
(
e.
g.,
0.5
grains/
dscf),
the
relevant
time
period
is
the
time
needed
to
conduct
an
emission
test
The
relevant
time
period
can
be
instantaneous
(
e.
g.,
no
holes
or
cracks
in
a
lid
for
any
amount
of
time)

...
Representative
of
the
Source's
Compliance
The
data
collected
should
provide
for
a
reasonable
assessment
of
the
source's
compliance
status
with
permit
emission
limits
What
Units
are
Subject
to
Periodic
Monitoring?

All
emission
units
When
is
Periodic
Monitoring
Presumed
in
a
Rule?

NSPS
and
NESHAP
after
November
15,
1990
Federal
or
SIP
standards
specifying
a
continuous
compliance
determination
method
Acid
Rain
rules
(
the
permit
must
have
the
monitoring,
recordkeeping,
and
reporting
requirements
specified
by
the
above
rules)

Factors
to
Consider
Likelihood
of
violating
an
applicable
requirement
Presence
of
add­
on
controls
Variability
of
emission
level
over
time
Monitoring
data
already
available
Technical
and
economic
feasibility
Monitoring
done
for
similar
emission
Other
factors
that
may
apply
on
a
case­
by­
case
basis
Checklist
for
Practical
Enforceability
Frequency
of
monitoring
Data
averaging
period
Procedures
for
checking
data
validity
Minimum
period
of
data
availability
Recordkeeping
Prompt
deviation
and
summary
reports
Rationale
is
documented
CAM
Rule
40
CFR
64
Compliance
Assurance
Monitoring
"
It's
only
a
monitoring
rule."

What
Does
the
CAM
Rule
Apply
To?

Pollutant­
Specific
Emission
Units
(
PSEUs)

Located
at
major
sources
Subject
to
an
emission
limit
Use
and
add­
on
control
devices
to
comply
with
an
emission
limit
Have
pre­
control
emissions
that
meet
or
exceed
a
major
source
applicability
threshold
When
Doesn't
the
CAM
Rule
Apply?

PSEUs
subject
to
NSPS,
NESHAP
or
MACT
standards
promulgated
after
November
15,
1990
(
exemption
does
not
apply
regarding
other
standards)

PSEUs
subject
to
acid
rain
program
or
another
program
requiring
continuous
compliance
determination
methods
Municipally
owned
peaking
units
When
Does
CAM
apply?

For
Large
PSEUs
(
PTE
>
the
major
source
threshold),
when
a
permit
application
is
submitted
after
April
20,
1998
At
a
significant
modification
At
renewal
of
the
Title
V
permit
What
is
in
a
CAM
Plan?

Monitoring
Provisions
How
parameters
will
be
measured
QA/
QC
Monitoring
frequency
Indicator
Ranges
Boundaries
within
which
the
control
device
must
operate
Compliance
can
reasonably
be
assured
in
this
range
Rationale
for
indicator
range
What
Needs
to
Be
in
a
Title
V
Permit?

The
approved
monitoring
approach
The
indicator
range
The
means
for
reporting
emission
limit
exceedances
What
Happens
If
There
Is
An
Exceedance?

Quality
Improvement
Plan
(
QIP)

Procedures
for
determining
the
cause
of
exceedances
Procedures
for
reducing
exceedances
Schedule
for
the
procedures
Failure
to
follow
the
QIP
may
be
a
violation
of
the
Title
V
permit
