Page 18 - Contractors World - UK & Ireland Edition Vol 2 No 7

RSPB Chief Executive Mike Clarke said: “This is the
largest coastal habitat creation of its kind in Europe and
it will transform an area more than double the size of
the City of London back to the coastal marshland it once
was. Wallasea Island will show for the first time on a large
scale, how it’s possible to ‘future proof’ low lying coasts
against sea level rise caused by climate change.”
Crossrail Chief Executive Andrew Wolstenholme said:
This landmark project is a pioneering example of how
the construction industry and environment groups can
work in partnership to build a sustainable Britain that
benefits both the economy and the environment. Crossrail
is delighted to be involved in a project that will leave a
lasting legacy long after the construction of the new rail
line has been completed.”
New public amenity
The new island, while being a protected environment, will
be open to the public. About eight miles of coastal walks
and cycle routes will be created as part of the project,
which means that the nature reserve will also become a
wonderful place for people to explore and enjoy.
Mike Clarke added: “Many special wildlife sites have
been lost in our crowded islands, but through intelligent
partnerships there’s great potential to put nature back at
a landscape-scale.”
Material transported by river
Crossrail has constructed a new 180 m long jetty which
can accommodate two ships at one time.
BAM Nuttal, together with Van Oord, the contractors,
also installed an excavated material handling facility at
Wallasea Island. At its peak 10,000 tonnes of material will
be unloaded from ships per day. Eighty-five per cent of
earth will be transported by rail and water. This strategy
has prevented the need for up to 270,000 lorry journeys.
Crossrail will deliver more than 2,000 ship loads of
excavated material. The earth will be transported from
Crossrail’s western tunnels via freight train from west
London to Northfleet in Kent where it will be loaded
on to ships. Excavated material will also be loaded onto
ships directly from the eastern tunnelling site at Limmo
near Canning Town station in east London, with further
material shipped from a storage site on the River Thames
at Barking.
The government has set a combined target for the
recreation of saltmarshes and mudflats, of 3,600 hectares
(8,895
acres) by 2015. The Wallasea Island Wild Coast
Project will deliver 670 hectares of marshland.
The Essex estuaries are in the top five most important
coastal wetlands in the country and are protected by
national and European law.
[
CWMAGS]
Able to handle two ships at a time, the waste material
from CrossRail project is transferred from the pier to a long
enclosed conveyor belt for transportation to the central
location from where it is dispersed as required.
Page 18
Contractors World - UK & Ireland Vol 2 No 7