Page
1
of
2
Memorandum
From:
Carey
A.
Johnston,
P.
E.
USEPA/
OW/
OST
ph:
(
202)
566
1014
johnston.
carey@
epa.
gov
To:
Public
Record
for
the
Effluent
Guidelines
Program
Plan
for
2004/
2005
DCN
01126,
Section
3.23
EPA
Docket
Number
OW­
2003­
0074
(
www.
epa.
gov/
edockets/)

Date:
August
6,
2004
Re:
Management
of
De­
icing
Activities
at
Toronto
Lester
B.
Pearson
International
Airport
The
following
text
describes
some
of
the
management
of
de­
icing
activities
at
the
Toronto
Lester
B.
Pearson
International
Airport.
It
was
copied
from
the
Toronto
Board
of
Health
April
8,
2002,
meeting
notes.

Management
of
De­
icing
Activities
at
Toronto
Lester
B.
Pearson
International
Airport.
Medical
Officer
of
Health
http://
www.
city.
toronto.
on.
ca/
legdocs/
2002/
agendas/
committees/
hl/
hl020408/
agenda.
pdf
(
March
21,
2002)

Reporting
on
the
collection,
treatment,
monitoring
and
reporting
procedures
that
are
in
place
at
the
Toronto
Lester
B.
Pearson
International
Airport
on
discharge
management
of
de­
icing
fluids
to
mitigate
health
and
environmental
effects;
advising
that
there
are
no
financial
implications
resulting
from
the
adoption
of
this
report;
and
recommending
that
the
Board
of
Health:

(
1)
request
the
Greater
Toronto
Airports
Authority
(
GTAA)
to:
(
a)
continue
to
monitor
discharges
from
the
airport
for
ethylene
glycol,
including
at
locations
along
the
property
boundary;
and
(
b)
continue
to
enhance
and
fine­
tune
their
de­
icing
fluid
and
stormwater
management
program
at
Toronto
Lester
B.
Pearson
International
Airport;

(
2)
request
the
Federal
Ministers
of
the
Environment
and
Transport
to:
(
a)
work
with
the
GTAA
and
other
Canadian
Airport
Authorities
to
encourage
manufacturers
to
replace
tolyltriazole
in
the
aircraft
de­
icing
and
anti­
icing
formulations
with
less
toxic
additives;
and
(
b)
work
with
the
GTAA
and
other
Canadian
Airport
Authorities
to
investigate
the
level
and
total
loading
of
tolytriazole
in
the
effluents
of
Canadian
airports.
Should
there
be
concerns
identified,
the
Federal
Minister
of
the
Environment
must
develop
a
suitable
effluent
guideline
for
tolyltriazole
discharge
to
the
natural
waterways,
and
assess
the
Page
2
of
2
treatability
of
tolytriazole
and
its
potential
impact
on
the
treatment
of
spent
de­
icing
and
anti­
icing
fluids;

(
3)
request
that
the
GTAA
consult
with
Works
and
Emergency
Services
on
the
safe
discharge
of
tolyltriazole
into
the
municipal
sanitary
sewer
system
if
concerns
are
identified.
In
this
case,
the
GTAA
should
include
tolyltriazole
in
its
monitoring
program
prior
to
discharge
of
spent
de­
icing
waste
to
the
sanitary
sewer
system
and
the
environment;

(
4)
request
the
Ontario
Minister
of
the
Environment
and
the
Commissioner
of
Works
and
Emergency
Services
to
continue
to
make
random
site
visits
to
ensure
all
the
environmental
management
procedures
for
de­
icing
are
followed;

(
5)
forward
this
report
to
the
GTAA,
Works
Committee,
the
Federal
Ministers
of
the
Environment
and
Transport,
the
Ontario
Minister
of
the
Environment,
and
the
Medical
Officer
of
Health
of
the
Regional
Municipality
of
Peel
for
their
information
and
appropriate
action;
and
(
6)
the
appropriate
City
officials
be
authorized
and
directed
to
take
the
necessary
action
to
give
effect
thereto.
