...
Putting
...
risks
...
in
...
perspective
...
The
...
objectives
...
for
...
the
...
megasite
...
management
...
are
...
derived
...
as
...
the
...
result
...
of
...
the
...
risk
...
assessment.
...
This
...
is
...
done
...
regarding
...
groundwater
...
and
...
other
...
receptors
...
located
...
both
...
inside
...
and
...
outside
...
the
...
Risk
...
Management
...
Zone
...
(RMZ).
...
In
...
terms
...
of
...
the
...
risks
...
to
...
all
...
identified
...
receptors
...
outside
...
and
...
inside
...
the
...
RMZ,
...
its
...
boundaries
...
are
...
re-adjusted
...
according
...
to
...
the
...
results
...
of
...
the
...
risk
...
assessment
...
(see
...
figure
...
below).
...
After
...
the
...
approval
...
of
...
stakeholders
...
the
...
evaluation
...
and
...
selection
...
of
...
the
...
risk
...
reduction
...
measures
...
at
...
a
...
cluster
...
level
...
should
...
be
...
carried
...
out.
...
The
...
necessity
...
of
...
the
...
risk
...
reduction
...
measures
...
regarding
...
the
...
protection
...
of
...
receptors
...
can
...
be
...
assessed
...
based
...
on
...
planes
...
of
...
compliance
...
and
...
site-specific
...
threshold
...
values,
...
which
...
are
...
determined
...
for
...
each
...
receptor.
...
Measures
...
are
...
required
...
if
...
the
...
receptor-specific
...
local
...
threshold
...
values
...
are
...
not
...
complied
...
with.
...
Output
As a result of this step the final risk clusters and RMZ boundaries are defined for the megasite.