February
12,
2004
Mr.
Allen
Biaggi,
Administrator
Nevada
Division
of
Environmental
Protection
333
N.
Nye
Lane,
Room
138
Carson
City,
Nevada
89706
Re:
Recommendation
on
Designation
for
the
Federal
PM2.5
Standard
 
Clark
County
Dear
Mr.
Biaggi:

In
accordance
with
EPA
guidance
regarding
attainment
status
with
the
PM2.5
National
Ambient
Air
Quality
Standard
(
NAAQS),
we
have
reviewed
the
relevant
data
and
have
made
a
determination
Clark
County
is
in
attainment
of
the
24­
hour
and
annual
average
NAAQS
for
PM2.5.
Based
on
the
2000­
2002
quality
assured
data
for
all
sites
monitored
in
Clark
County
by
the
Department
of
Air
Quality
Management
(
DAQM),
the
3rd
highest
24­
hour
value
is
in
compliance
with
the
NAAQS.
The
average
of
the
12
quarterly
averages
is
also
in
compliance
with
the
annual
NAAQS.
Given
this
information,
it
is
our
recommendation
that
Clark
County
be
designed
as
Attainment/
Unclassifiable.

Enclosed
is
the
DAQM
monitoring
data
for
the
ambient
sites
in
Clark
County
for
your
review.
If
you
have
any
questions
or
need
clarification
on
any
item
related
to
this
issue,
please
contact
Mrs.
Catherine
MacDougall
of
my
staff
at
(
702)
455­
1602.

In
Public
Service,

Christine
Robinson,
Director
Enc
Cc:
Jolaine
Johnson,
NDEP
Colleen
Cripps,
NDEP
Jacob
Snow,
General
Manager,
RTC
Richard
Holmes,
Assistant
County
Manager
Alan
Pinkerton,
Assistant
Director,
Comprehensive
Planning
Catherine
MacDougall,
Assistant
Director,
DAQM
John
Koswan,
Assistant
Planning
Manager,
DAQM
