APPENDIX
1
Memo
from
John
S.
Seitz,
Director,
Office
of
Air
Quality
Planning
and
Standards,
U.
S.
EPA,
to
EPA
Air
Directors,
"
Boundary
Guidance
on
Air
Quality
Designations
for
the
8­
Hour
Ozone
National
Ambient
Air
Quality
Standards
(
NAAQS
or
Standard)",
March
28,
2000
