Professional
Lake
Management
began
Sonar
treatments
on
June
14th,
2006.
Professional
Lake
Management’s
pre-treatment
weed
survey
revealed
limited Hydrilla
growth
in
proposed
treatment
areas, alternative
sites
have
been
selected
and
have
been treated
as Hydrilla
growth
and
budget
dictated.
For
more
information
contact
Professional
Lake
Management
at
(866)
PRO-LAKE
or
send
an
e-mail
to
gaston@prolakemgmt.com
Treatment
areas
were
selected
based
on
information
from
the
2005
fall
survey,
and
a
comparison
of
sites
selected
for
treatment
in
prior
years.
This
budget
allowed
for
the
chemical
control
for
nuisance
vegetation
at
for
the
areas
listed
below:
Click
the
following
links
for
a
treatment
map
&
schedule of
each
area:
Pea
Hill
Sites
A-E
Pigeonroost,
Songbird,
and
Mill
Creek
Pretty
Creek
Woodland
Hurst
and
Sledge
Creek
Lees
Creek
Great
Creek
Jimmies
Creek
Jordan
Creek
and
Sixpound
Creek
Big
Stonehouse
and
Little
Stonehouse
Creek
The
treatment
areas
highlighted
in
yellow
indicate
a
site
that
has
been
treated
with
a
product
called
Sonar
(Fluridone).
This
is
a
systemic
herbicide
that
is
used
to
treat
water
as
a
volume.
The
formulation
of
Sonar
that
we
are
using
is
a
slow
release
compound
that
works
over
a
few
weeks.
It
has
impacted
the
entire
area
of
Great
Creek.
Sonar
is
engineered
to
sustain
a
low
dose
of
herbicide
in
large
systems
for
an
extend
period
of
time.
We
have
applied
the
product
a
total
of
four
times
over
several
weeks
to
sustain
a
concentration
of
3
to
5
parts
per
billion.
Therefore,
the
treatment
areas
are
not
clearly
defined
by
lot
or
by
physical
application.
We
have
impacted
targeted
nuisance
vegetation
outside
of
the
defined
treatment
area.
This
is
defined
as
the
treatment
area
of
impact.
We
ascertain
the
amount
of
product
to
apply
based
on
the
total
acreage
of
the
site
along
with
the
average
depth
of
the
water.
A
technology
called FasTEST
has
been
used
to
measure
the
amount
of
concentrate
present
in
the
water.
Based
on
our
test
results,
we
determined
the
amount
of
product
required
to
bump
the
concentration
to
maintain
our
targeted
levels
of
herbicide.
Sonar is
engineered
to
affect
the
plants
ability
to
create
chlorophyll.
The
visible
result
will
appear
as
a
whitening
of
the Hydrilla
stem
and
leaflets.
The
product
will
take
approximately
30
days
to
injure
the
plants
to
the
level
at
which
this
is
apparent.
We
have
verified
the
results
of
this
action
over
several
weeks.
Areas
of
public
use
and
public
access,
including
public
boat
ramps,
public
swim
areas
and
dry
hydrants
have
been
given
priority.
Treatments
began
in
priority
areas
on
June
15th,
2006.
Residents
contracting
with
private
application
firms
should
verify
that
their
contractor
has
notified
Dominion
Power.
It
is
important
to
coordinate
the
public
treatments
with
private
treatments
to
minimize
the
risk
of
applying
herbicide
multiple
times
to
the
same
area.
Please
note
the
location
of
the
proposed
public
treatment
sites
and
notify
your
private
application
firm
if
you
are
currently
under
contract.
Professional
Lake
Management
has
contacted
our
customers
regarding
existing
contracts
based
on
the
locations
of
the
public
treatment
areas.
