Liverpool Water Space - British Waterways
When British Waterways sought to take over management
of Liverpool Docks from English Heritage, they
required an investigation of the sediments within
each of the ten interlocking docks.
The investigation was not associated with the
usual construction aspects of the proposed redevelopment
- of the docks but instead its purpose was to
establish the presence of any contamination and
hence financial liability that may be contained
within the sediment.
In accordance with current legislation and to
safeguard against possible future problems, the
overall depths of sediment had to be established
together with proving the presence or absence
of any contamination. Mott MacDonald, - Consultant
Engineer for the contract called upon the services
and expertise of Geocone to carry out the project.
All of the work was undertaken over water from
a floating pontoon fitted with sectional spud
legs, the legs were especially adapted for the
project in order that the pontoon could be moved
under the low head room road bridges that joined
adjacent docks.
The sediment depths and thicknesses were established
using standard Cone Penetration Testing methods
at two locations in each dock. The composition
of the sediment was identified from a series of
grab samples together with samples taken at various
depths within the sediment using the MOSTAP Sampler
in conjunction with the CPT work.
All of the samples were sent to TES Bretby, analytical
laboratories for a suite of chemical analysis
under the direction of the Consultant Engineer.
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