...
Addressing
...
groundwater,
...
surface
...
water
...
and
...
soil
...
contamination
...
on
...
large
...
(former)
...
industrial
...
sites
In Europe,
...
large
...
areas
...
and
...
regions
...
with
...
a
...
high
...
density
...
of
...
industry
...
(e.g.
...
sea
...
ports,
...
large
...
scale
...
chemical
...
industry
...
complexes,
...
metal
...
mining
...
areas,
...
military
...
complexes)
...
suffer
...
from
...
subsurface
...
contamination.
...
At
...
these
...
areas,
...
which
...
are
...
referred
...
to
...
as
...
megasites,
...
soil,
...
surface
...
water
...
and
...
groundwater
...
are
...
usually
...
polluted
...
with
...
a
...
mix
...
of
...
a
...
wide
...
variety
...
of
...
pollutants.
...
For
...
megasites,
...
redevelopment
...
combined
...
with
...
a
...
comprehensive
...
remediation
...
is
...
often
...
impossible
...
on
...
short
...
terms.
...
Remediation
...
costs
...
are
...
high,
...
thus
...
obstructing
...
an
...
economically
...
balanced
...
redevelopment
...
program.
...
On
...
the
...
other
...
hand,
...
severe
...
contamination
...
in
...
soil,
...
surface
...
water
...
and
...
groundwater
...
can
...
be
...
hazardous
...
for
...
humans
...
and
...
ecosystems
...
and
...
limit
...
free
...
use
...
of
...
resources
...
like
...
surface
...
water,
...
groundwater
...
and
...
land.
...
Welcome
...
is
...
an
...
acronym
...
of
...
Water,
...
Environment
...
and
...
Landscape
...
management
...
at
...
COntaminated
...
MEgasites.
...
The
...
goal
...
of
...
the
...
WELCOME-project
...
was
...
to
...
make
...
an
...
Integrated
...
Management
...
Strategy
...
(IMS)
...
for
...
Prevention
...
and
...
Reduction
...
of
...
risks
...
at
...
Contaminated
...
Industrial
...
Megasites.
...
This
...
IMS
...
is
...
a
...
stepwise
...
approach
...
that
...
takes
...
the
...
present
...
situation
...
as
...
a
...
starting
...
point.
...
A
...
risk
...
assessment
...
that
...
takes
...
the
...
soil-water
...
system
...
and
...
the
...
technical
...
and
...
economic
...
feasilibity
...
of
...
the
...
remediation
...
actions
...
into
...
account,
...
form
...
the
...
core
...
of
...
this
...
methodology.
...
The
...
WELCOME-project
...
was
...
funded
...
by
...
the
...
European
...
Union
...
(FP5,
...
EESD,
...
EVK1-CT-2001-00103)
...
and
...
executed
...
from
...
January
...
2002
...
until
...
December
...
2004.
...
The
...
result
...
is
...
an
...
Integrated
...
Management
...
Strategy
...
for
...
Megasites
...
(IMS)
...
. The IMS used to be available on the website euwelcome.eu, but has in 2013 been transferred to this location due to technical and support-reasons. The reason that the IMS is still 'alive' is because many of its subjects are still actual and usefull. Some of the features of the former website has been removed, because they were outdated. This website presents the following subjects:
- basic strategies of the IMS,
- a manual for technical experts and environmental managers and
- examples of the implementation of the IMS at the Welcome megasite cases