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Transcript of P2 Beckton STW SIP
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I n t r o d
u c t i on
I n t r o d
u c t i on
Beckton SewageTreatment Works
Currently, untreated sewage regularly overows into the River Thames from London’s Victorian sewerage systemvia combined sewer overows (CSOs). The proposed Thames Tunnel would intercept these overows through the
use of a new storage and transfer tunnel, which would link west London and Abbey Mills Pumping Station. Thesewage ow would then be transferred to Beckton Sewage Treatment Works via the Lee Tunnel. The reductionin untreated sewage entering the River Thames would bring long-term benets for the environment and users of the River Thames. In order to deliver the project we need a number of sites along the route and this documentidenties our current preferred site at Beckton Sewage Treatment Works.
Thames Tunnel
S i t ei nf or m a t i on p a p er
1
Key facts
Local authority: Newham
Works proposed: Modications to Sewage Treatment Works to cater
for sewage ows from Thames Tunnel project
Duration of main construction works: Approximately four and a half years.
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Beckton Sewage Treatment Works
2
Our preferred route for the main tunnel ends at Abbey
Mills Pumping Station where it would connect with the
Lee Tunnel. The Lee Tunnel would then transfer flows
captured by the main tunnel from Abbey Mills Pumping
Station to Beckton Sewage Treatment Works for
treatment.
We need to carry out works at Beckton Sewage Treatment
Works to allow the additional storm flows from the main
tunnel arriving via the Lee Tunnel to be pumped out. The
works would be contained within the boundary of Beckton
Sewage Treatment Works, which is located on the north
bank of the River Thames. The River Roding (Barking
Creek) is to the east of the site and to the west a mixture
of business parks and retail parks on Armada Way. The
works would be carried out in two sites within Beckton
Sewage Treatment Works as shown in Figure 1A.
Section 1: Introduction and site information
Related documents:
Build
Abbey Mills
Pumping StationAMPS
This site information paper sets out our proposals
at Beckton Sewage Treatment Works. We have also
produced project information papers, which cover
overarching topics relating to the project. Where we
consider that a project information paper is particularly
relevant, we have highlighted this in a related documents
box. At the end of this site information paper is a list of
other documents, which may be of interest and a glossary
of terms.
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Introduction
3
Figure 1A: Beckton Sewage Treatment Works location plan
Gallions ReachRetail Park
J e n k
i n s
L a n e
Beckton Gas Works
BarkingBarrier
River Thames A r m
a d
a
W a y
B a r k i n
g C r e e k
N
BARKING &
DAGENHAM
NEWHAM
Local authority boundary
Draft limit of land to beacquired or used
Proposed siphon tunnelroute – centreline
Beckton SewageTreatment Works
R o
y a
l
D o c k s R o a
d
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Beckton Sewage Treatment Works
4
Section 2: Construction
Construction activitiesThe work would last approximately four and a half years.
The works would normally be undertaken during typical
standard working hours, except where noted, and
consist of:
•Installation of pumps in addition to those already being
installed as part of the Lee Tunnel. The Lee Tunnel
project will build the Tideway Pumping Station and
install four of the six pumps required. As part of theThames Tunnel project we would install the remaining
two pumps.
•Construction of works to transfer the flows from the
Tideway Pumping Station to the inlet works of the
Sewage Treatment Works.
•Installation of additional equipment at the inlet works
of the Sewage Treatment Works.
•A siphon tunnel to transfer tunnel overflows to the Lee
Tunnel overflow shaft, which would be constructed
under continuous working hours.
Related documents:
Managing construction
Works to extend Beckton Sewage Treatment Works have
been approved and have started on site as part of the Lee
Tunnel and Beckton Sewage Treatment Works extension
projects. The works underway have been designed to
ensure that they can accommodate the additional
infrastructure required by the construction of the main
tunnel, and that sufficient treatment capacity will be
available at the works.
Our typical working hours are expected to be:Standard: 8am-6pm weekdays, 8am-1pm Saturday*
Continuous: 24 hours a day, seven days a week**
* Standard working hours would also include, subject to agreement with the local authority:
– a short period (up to one hour) before works start and after they have finished to allow our workers to prepare for work and check the site.
– equipment and machinery maintenance could also take place 1pm-5pm Saturday and 10am-4pm Sunday.
** The main activities taking place 24 hours a day are below ground or within an enclosure.
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Construction
C on s t r u c t i on
5
Site layoutThe works would be contained within the site boundaries
shown in Figure 1A, with the exact layout subject to the
construction method chosen by the contractor.
Construction transport and access
We have considered the use of the River Thames to
transport materials to and from this site. However, giventhe need to move relatively small volumes of material, we
consider that it is unlikely to be cost effective. We have
therefore assumed that all materials would be moved
by road. The contractor would however be given the
flexibility to use river transport where they consider it is
practical and cost effective to do so.
Construction traffic would access the site from Alfred’s
Way (A13), through the existing sewage treatment worksentrance off Jenkins Lane. Traffic would leave the site via
the same route. This access route is shown on Figure 2A.
Beyond this, construction traffic would use the major road
network to get to and from its final destination.
As the proposed works would be located within the
operational sewage treatment works, we do not
anticipate that any footpath or road diversions, bus stop
relocations, junction changes or parking bay suspensionswould be required.
Related documents:
Transport
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Beckton Sewage Treatment Works
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Figure 2A: Proposed access route to the site from the nearest major road
N
Royal Docks Road
A1020
Eric Clarke Lane
Jenkins Lane
A 1 3 A l f
r e d ’ s W a y
BARKING & DAGENHAM
NEWHAM
Draft limit of land to beacquired or used
Site access
Local authority boundary
Transport for London(TfL) road network
Proposed lorry access toTfL road network
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Construction
7
Management of construction works
Our construction works would be managed in accordance
with an agreed Code of construction practice (CoCP).For phase two consultation, we have produced a draft
CoCP Part A: General requirements, informed by CoCPs
from other major construction projects in London and
consultation with the local authorities. Through the
environmental impact assessment process, scheme-
wide principles to address potential effects on the local
environment have been identified and integrated into
the design. The CoCP Part A sets out scheme-wide control
measures that would be used to minimise potentialeffects during the construction process.
Table 2.1 sets out what we consider to be the key issue
for this site during construction, and how we are currently
proposing to address it.
Issue Our response
Containment of contamination.A strategy would be established to ensure that ground contamination at
the site if found is appropriately managed and contained.
Table 2.1: Key issue relating to construction
Related documents:
Environment
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Beckton Sewage Treatment Works
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This section describes the site after the completion of the
construction work, ie when the main tunnel is in use – the‘operational phase’.
Design
Since phase one consultation which was held between
September 2010 and January 2011, we have progressed
the design for the permanent use and appearance of
the structures at Beckton Sewage Treatment Works. Thedesign of the permanent proposals follows our scheme-
wide principles and takes into account comments made
and ongoing engagement with the London Borough of
Newham and other technical consultees.
Our permanent works incorporate those set out at
Section 2.
Section 3: Future Use
Issue Our response
The layout of the existing sewers
and other infrastructure at Beckton
Sewage Treatment Works.
Careful siting of permanent works to avoid existing above and below ground
infrastructure to enable the site to remain operational during construction.
Table 3.1: Site specific issue that has influenced our permanent design
Table 3.1 sets out the site specific issue that has
influenced our permanent design proposals and howwe are currently proposing to address it in our proposed
design.
Figure 3A provides an illustration of our design proposal.
Further information on the development of our design
can be found in the Design development report.
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F u t ur e
u s e
Future use
9
Figure 3A: Layout of site once construction works complete
Installation of additional
equipment at inlet works
Transfer pipelines from pumping station toinlet works following route of Lee Tunneltransfer pipeline, part above ground
New shaft and building
for siphon tunnel
New shaft for
siphon tunnelNew valve chamber
Installation of additionalpumps in TidewayPumping Station
Installation of additionalelectrical equipment inpower complex building
New valve chamber
N
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Beckton Sewage Treatment Works
10
Issue Our response
Capacity to process additional
sewage from the tunnel.
The planned extension at Beckton Sewage Treatment Works, which is currently
under construction, would provide sufficient capacity to accommodate and process
the additional sewage flow directed to Beckton Sewage Treatment Works.
Operation and maintenance
Once the tunnel is operational, we expect to undertake
inspection and maintenance of the ventilation andbelow ground equipment approximately once every
three to six months. This will be undertaken within our
site and as part of the existing maintenance routine.
Management of operational effects
We have undertaken technical work, including
stakeholder engagement, to assess and identify the key
issues associated with this site once it is operational.Table 3.2 summarises the issue and how we are
addressing it.
Table 3.2: Key issue relating to site operation
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Further information
This section sets out documents which may be of particular interest. Further information on our proposals can be
found on our website (www.thamestunnelconsultation.co.uk) or is available upon request (call our customer centre
on 0800 0721 086).
Phase two public consultation material
Project information papers include general information about the Thames Tunnel project. There are 17 project
information papers, which cover various aspects of the project. Those project information papers that may be of
particular interest are set out below.
Icon Title Details
Build
Provides information on the different types of sites required for the Thames Tunnel
project and the typical construction activities that will be undertaken at each site.
EnvironmentSets out the process the project is following to assess potential environmental
effects of the Thames Tunnel project.
Managingconstruction Includes information on what measures our contractors will put in place at our sitesduring construction.
Options Outlines the various ways to deal with sewage overflows.
OverflowSets out how London’s sewerage system works and why the capital has an overflow
problem.
Route and
tunnel
alignment
Sets out the preferred route of the main tunnel and the reasons for our preference.
TransportContains information on the different transport options we have considered for
delivering and removing materials from our sites.
11
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12
Further information
Phase two public consultation material
Site information papers provide information that relate to each preferred site along the route of the Thames Tunnelproject. The following site information paper may be of particular interest.
Abbey Mills Pumping Station
Technical reports
Phase two
constructioninformation
Code of construction
practice Part A: Generalrequirements (CoCP)
Sets out control measures to be adopted during theproject construction period.
Phase two
environmental
information
Preliminary environmental
information report (PEIR)
Contains initial assessments on the environmental
effects of the Thames Tunnel project based on
information collected to date. Please refer to volume
28 of the non-technical summary and volume 28 of
the PEIR for more information on this site.
Phase two
schemedevelopment
Design development report
Provides a general overview of how the scheme
design at each site has evolved to date. Please referto chapter 25 for more information on this site.
AMPS
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Site glossary
Term Definition
Draft limit of land to be
acquired or used
The extent of land that we may need to use or acquire, or over which rights may be needed
to carry out works that are essential to the project.
Lee TunnelA tunnel, currently under construction, which will intercept the Abbey Mills Pumping Station
CSO, store and then transfer flows onward to Beckton Sewage Treatment Works.
Main tunnel The tunnel from Acton Storm Tanks to Abbey Mills Pumping Station.
Operational phase After the completion of the construction work, when the main tunnel is in use.
Thames Tunnel project
The Thames Tunnel project comprises a storage and transfer tunnel, from west London to
Beckton Sewage Treatment Works in east London, and the control of 34 CSOs along theThames Tideway.
Transport for London
Road Network (TLRN)
The network of roads managed by Transport for London. These are the major or ‘strategic’
roads, which have high capacity.
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B kt S T t t W k
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Beckton Sewage Treatment Works
16
Phase two consultation: Beckton Sewage Treatment Works
For further information or to comment on ourproposals see our website:
www.thamestunnelconsultation.co.uk
110-ED-PNC-00000-000071
Autumn 2011
It is very important that you understand theinformation we have provided. If you needfurther information in another language,braille, large print or audio format pleasecontact us on 0800 0721 086.