The
background
papers
on
the
candidate
national
program
priorities
are
intended
to
be
thought
pieces
to
initiate
further
discussion.
When
priorities
are
selected
more
detailed
strategies
with
in­
depth
background
information,
numerical
targets,
schedules,
milestones
and
performance
measures
will
be
developed.
______________________________________________________________________________

November,
2003
1
Proposed
Priority:
Clean
Air
Act/
Air
Toxics
(
implementation
of
Maximum
Achievable
Control
Technology
(
MACT)
Compliance
and
Enforcement
Strategy)

Universe
and
Types
of
Facilities
Sources
of
hazardous
air
pollutants
(
HAPs)
for
which
MACT
Standards
have
been
promulgated
under
Section
112
of
the
Clean
Air
Act
(
CAA).

Geographic
Range
All
Regions
Environmental
Risks
MACT
standards
are
promulgated
under
the
CAA
to
regulate
the
most
hazardous
air
pollutants
and
those
posing
the
highest
degree
of
risk
to
human
health
and
the
environment.
By
ensuring
compliance
with
MACT
standards,
the
Agency
will
reduce
public
exposure
to
toxic
air
emissions.
Emphasis
on
MACT
standards
over
several
years
can
ensure
that
the
requirements
are
clearly
understood,
guidance
and
compliance
assistance
tools
(
e.
g.,
permitting
and
enforcement
guidance,
inspector
checklist
and
applicability
flow
charts)
are
developed
for
both
regulatory
agencies
and
the
regulated
community
and
targeted
inspections
and
enforcement
are
carried
out.

By
2004,
EPA
will
have
promulgated
approximately
90
MACT
standards.
Since
FY
2000,
the
Air
Toxics
program
has
been
an
OECA
priority.
The
objective
of
the
priority
has
been
to
distribute
the
substantial
MACT
implementation
workload
between
headquarters
and
the
regions
through
a
Regional
Adopt­
a­
MACT
program.
Through
the
program,
the
regions
adopted
MACT
standards
for
which
they
developed
compliance
monitoring
and
compliance
assistance
tools.
This
program
has
resulted
in
the
availability
of
a
wide
array
of
MACT
implementation
tools
such
as
inspector
check
lists,
applicability
flowcharts
and
compliance
timelines.
Now
that
compliance
dates
are
in
place
for
more
than
40
MACT
Standards
and
implementation
tools
are
available
for
the
majority
of
these
standards,
the
focus
of
the
Air
Toxics
priority
will
shift
from
primarily
a
compliance
assistance
and
tool
development
effort
to
compliance
monitoring
and
enforcement.
To
facilitate
this
shift
in
focus,
OECA
has
developed
the
MACT
Compliance
and
Enforcement
Strategy
(
MACT
Strategy).
Implementation
of
the
MACT
Strategy
will
help
EPA
to
establish
compliance
baselines,
and
develop
and
evaluate
compliance
trends
for
major
MACT
sources
and
source
categories.
The
background
papers
on
the
candidate
national
program
priorities
are
intended
to
be
thought
pieces
to
initiate
further
discussion.
When
priorities
are
selected
more
detailed
strategies
with
in­
depth
background
information,
numerical
targets,
schedules,
milestones
and
performance
measures
will
be
developed.
______________________________________________________________________________

November,
2003
2
Noncompliance
Information
To
achieve
the
maximum
environmental
benefit,
EPA
regional
offices
will
primarily
focus
on
major
sources
of
hazardous
air
pollutants
and
specifically
target
larger
sources
with
higher
potential
of
environmental
risk.
As
the
EPA
regional
offices
complete
compliance
evaluations,
noncompliance
information
will
be
gathered
and
shared
among
the
regional
offices
and
with
our
state
and
local
agency
counterparts
to
facilitate
compliance
monitoring
and
enforcement.
