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Transcript of P2 Abbey Mills Pumping Station 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
Abbey MillsPumping Station
Thames Tunnel
S i t ei nf or m a t i on p a p er
1
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 Abbey Mills Pumping Station.
Key facts
Local authority: Newham
Site type: Main tunnel reception site
Duration of main construction works: Approximately four years.
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Abbey Mills Pumping Station
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Section 1: Introduction and site informationWe are proposing to use the southern and western part
of our existing Abbey Mills Pumping Station site for the
construction work. The site would receive the main tunnel
from Chambers Wharf and connect the main tunnel to
the Lee Tunnel, which would transfer the flows of sewage
to Beckton Sewage Treatment Works.
The location of the site is shown in Figure 1A, to the west
of Abbey Mills Pumping Station and the Lee Tunnel, which
is currently under construction. The site is located within
the Three Mills Conservation Area, with Prescott Channel
to the west and the Channelsea River to the south and
east. Residential properties are located to the north and
north west of the site on Gay Road and Riverside Road.
This site information paper sets out our proposals at
Abbey Mills Pumping Station. 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.
Related documents:
Build
Beckton SewageTreatment Works
BSTW
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Introduction
3
Figure 1A: Abbey Mills Pumping Station location plan
Three MillsStudios
C h a n n e l s e
a R i v e
r
Three MillsGreen
Three Mills Lock
Abbey MillsPumping Station
P r e s c o t t C
h a n n e l
N
Local authority boundary
Draft limit of land to beacquired or used
Proposed tunnelroute – centreline
Lee Tunnel currentlyunder construction
R i v
e r s i d
e R o a d
G a y R o a
d
NEWHAM
TOWERHAMLETS
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Abbey Mills Pumping Station
4
Why we have amended our proposalsSince January 2011, we have considered the comments
from phase one consultation, feedback from ongoing
engagement and new information; and undertaken
further technical work. We reviewed our tunnelling
strategy and concluded that Abbey Mills Pumping Station
should be used as a main tunnel reception site rather
than a main tunnel drive site, with the main tunnel being
driven to Abbey Mills Pumping Station from Chambers
Wharf. This is because:
•Further technical work has shown that transporting
material to and from the site by the River Lee would be
very difficult to achieve and is highly undesirable when
material needs to be transported daily over a two to
three year period. This level of barge movements would
be required if Abbey Mills Pumping Station were to be
used as a main tunnel drive site, given the volume of
excavated material that would be produced.
•Given the constraints to using the River Lee to transport
materials, we would need to use the residential roads to
access the site.
In comparison, Chambers Wharf has significantly better
river access for transporting materials. There are also
fewer navigational restrictions on the River Thames when
compared to the River Lee, which would allow the use of larger barges and therefore more efficient transportation
of materials.
How we chose this site
What we proposed at phase one consultationIn addition to sites to intercept the CSOs, we require sites
to build the main tunnel at:
•each end of the main tunnel in west and east London
•suitable intervals along the route of the main tunnel
• locations where the type of geology that the main
tunnel goes through changes.
Prior to identifying the precise location of the main tunnel
sites, we established the broad areas within which they
would be needed. One of the main tunnel sites is required
in the Abbey Mills Pumping Station area, which is where
the main tunnel would end.
Through our site selection process, we identified three
possible shortlisted sites which could be used as a main
tunnel drive site. At phase one consultation, which was
held between September 2010 and January 2011, we
presented these sites:
•Three Mills Studios
•Three Mills Green
•Abbey Mills Pumping Station.
Abbey Mills Pumping Station was identified as our
preferred site at phase one consultation to drive the maintunnel to King’s Stairs Gardens.
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Introduction
5
What we are proposing at phase two consultationAbbey Mills Pumping Station is our preferred site for
a main tunnel reception site. This is because using this
site allows us to make use of land that we own, is part
of a large area of brownfield land and is close to the
Lee Tunnel shaft which the main tunnel would need
to connect to in order to transfer the flows to Beckton
Sewage Treatment Works.
Related documents:
Changes
Q&A Consultation
Site selection
Beckton SewageTreatment Works
Chambers Wharf CW
BSTW
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Abbey Mills Pumping Station
6
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Construction
C on s t r u c t i on
7
Section 2: Construction
Construction activitiesConstruction activities are required to construct the
main tunnel. We would construct a shaft with an internal
diameter of approximately 20m (approximately 67m
deep) to connect to the main tunnel. The shaft would
receive the tunnel boring machine from Chambers Wharf
which would be removed from the shaft and removed
from the site. The shaft would also be used to install
the secondary lining into the main tunnel. Figure 2A
illustrates the below ground infrastructure proposed.These activities would take place within the area
indicated by the red line in Figure 1A, in five main phases,
lasting approximately four years in total. The main
construction activities associated with these phases are
set out in Table 2.1.
Related documents:
Build
Managing construction
Figure 2A: Illustration showing typical elements of below ground infrastructure
Shaft
Main tunnel
Lee Tunnel
Lee Tunnel shaft
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Abbey Mills Pumping Station
8
Advanceworks
Phase 1
Site setup
Figure reference _ Figure 2C
Typical working hours Varies Standard
M a i n c o n s t r u c t i o n
a c t i v i t i e s
Utilities connected ü
Utilities diverted or protected ü
Site cleared ü
Site facilities and access set up ü
Shaft excavated and built
Lee Tunnel connection built
Tunnel boring machine removed from shaft and disassembled
Internal (secondary) tunnel lining constructed
Above and below ground structures constructed
Mechanical and electrical equipment installed
Site restored and landscaped
Temporary site facilities removed
Table 2.1: Main activities during construction phases
Our typical working hours are expected to be:
Standard: 8am-6pm weekdays, 8am-1pm Saturday*
Extended standard: 6pm-10pm weekdays, 1pm-5pm SaturdaysContinuous: 24 hours a day, seven days a week**
Varies: Working hours for advanced works will depend on the nature of the works and will be agreed
with the local authority
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Construction
9
Phase 2
Shaft construction
Phase 3
Secondary lining
Phase 4
Construction of
other structures
Phase 5
Completion of
works and siterestoration
Figure 2C Figure 2D Figure 2D _
Standard with
occasional extended
standard
Continuous Standard Standard
ü
ü
ü
ü
ü
ü
ü
ü
* 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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Site layout and construction phases
Figures 2C and 2D show how the site might be laid out
during the construction phases, which are set out in Table2.1 and Figure 2B. These layouts have been informed by
the size of the infrastructure proposed, the construction
methods required and the location of neighbouring
buildings and structures. They have also been developed
to minimise effects on the local community and
environment. A particular factor at this site that has
influenced the layout is as follows:
Year 1
A d v a n c e
w o r k s
Year 2 Year 3 Year 4
P1
P2
P3
P4
P5
Figure 2B: Construction timeline showing approximate duration of
works in phases (P)
•If the Lee Tunnel is able to use barges on the River
Lee via Bow Creek and the Prescott Channel toexport materials from its shaft construction, similar
arrangements could be used for construction activities
at this site. Our site layout has changed to reflect this.
The site layouts are indicative only, and the contractor
may arrange the site in a different way, depending on
the chosen construction methods, provided that any
environmental effects are appropriately managed, and
that the main construction activities are undertaken
within the red line shown in Figure 1A.
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Construction
11
Figure 2C: Illustrative phases 1 and 2 construction plan
Shaft
Piling rig
Cranes
N
Lee Tunnel shaft
Maximum extent of construction site forphases 1 and 2
Site hoarding
Local authority boundary
Site support/welfare
Excavated materialstorage and processing
Maintenance workshopand storage
Construction support
Internal site road
Site access
Option for contractorto transport materials
using barges
TOWERHAMLETS
C h a n
n e l s e
a R i v e
r
P r e s c o t t C
h a n n e l
R i v
e r s i d
e R o a d
G a y R o a d
NEWHAM
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Figure 2D: Illustrative phases 3 and 4 construction plan
Shaft
Cranes
N
Maximum extent of construction site for
phases 3 and 4Site hoarding
Local authority boundary
Site support/welfare
Maintenance workshopand storage
Construction supportInternal site road
Site access
TOWERHAMLETS
C h a n
n e l s e
a R i v e
r
P r e s c o t t C h a
n n e l
R i v
e r s i d
e R o a d
G a y R o a d
Option for contractorto transport materials
using barges
NEWHAM
Lee Tunnel shaft
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Construction
13
Additional works and activities
The main construction activities at this site are set out in
Table 2.1. We would also need to undertake additionalworks and activities, some of which may be located
outside of the area indicated by the red line in Figure 1A.
The anticipated additional works and activities are set
out in Table 2.2.
When Type of works What we would do
Required for
construction phase
Installation of equipment to monitor
environmental matters such as noise,vibration and dust.
The locations of monitoring equipment would
be agreed with the local authority and relevantlandowners.
Protection works to third party
structures (such as buildings, bridges
and tunnels).
We would undertake studies to identify any effects our
construction work may have on third party structures.
The studies may recommend particular construction
methods or, in very limited instances, protection works.
Temporary connection to utilities
(such as water, sewer, phone and
electricity supply).
We expect to connect to utilities within the pumping
station site.
Traffic management works.
These may need to extend beyond our site and could
include relocating kerb lines, repainting road lines and
modifying traffic signals.
Required for
operational phase
Permanent connection to utilities
(such as water, phone and electricity
supply) for the operational tunnel.
We expect to connect to utilities from within the
pumping station site.
Table 2.2: Additional works and activities
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Construction transport and access
We have considered the use of the River Lee to transport
materials to and from this site, however, given thenavigational constraints and the relatively small volumes
of material that we would need to move, we consider
that it is unlikely to be cost effective. We have therefore
assumed that all materials would be moved by road.
However, the scope of works currently being carried out at
this site as part of the Lee Tunnel contract is very similar
to our proposed scope of works. If the Lee Tunnel shaft
construction proves that river transport is viable from this
site, it is likely that we would adopt the same strategy.Table 2.3 sets out the anticipated average daily number
of lorries visiting (ie travelling to and from) the site during
the peak months of each phase.
Construction traffic would access the site from High
Street (A11), turning right into Abbey Lane and turningleft into the site via an existing entrance from Gay
Road. Traffic would leave the site via the same route.
This access route is shown on Figure 2E. Beyond this,
construction traffic would use the major road network to
get to and from its final destination.
The existing footpath around the site is being reinstated
as part of the current Lee Tunnel works. Our works for the
Thames Tunnel project would not affect the footpath.Based on our current design we do not anticipate that
any parking bay suspensions, road diversions, bus stop
relocations or junction changes would be required.
Phase 1
Site setup
Phase 2
Shaftconstruction
Phase 3
Secondarylining
Phase 4
Constructionof other
structures
Phase 5
Completion of works and site
restoration
Average daily
lorry visits 25 lorries 53 lorries 18 lorries 28 lorries 11 lorries
Table 2.3: Average daily lorry visits during the peak months
Related documents:
Transport
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Construction
15
Figure 2E: Proposed access route to the site from the nearest major road
High Street
Abbey Lane
Gay Road
A11
A12
G a y R o a
d
Left turn in,right turn out
Existingentrance
NEWHAM
TOWERHAMLETS
Draft limit of land tobe acquired or used
Internal site road
Site access
Local authority boundary
Transport for London(TfL) road network
Proposed lorry access toTfL road network
N
Abb Mill P i St ti
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Abbey Mills Pumping Station
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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 2.4 sets out what we consider to be the key issues
for this site during construction, and how we are currently
proposing to address them.
Related documents:
Environment
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Construction
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Issue Our response
Loss or displacement of some of theallotments west of the Abbey Mills
Pumping Station.
Since phase one consultation, we have revised our proposals for the site to
ensure that the location of construction activities would not result in the lossof any allotment plots. The decision not to use this site as a main tunnel drive
site means that a smaller site is now required for construction.
Possible effect on the footpath around
the site linking the Greenway to Three
Mills Green.
The existing footpath around the site is being reinstated as part of the current
Lee Tunnel works. Our works for the Thames Tunnel project would not affect
the footpath.
Possible effect of construction vehicleson the capacity and operation of the
local road network.
We have sought to minimise disruption to the local road network through
our site layout and design. We would manage the effects of road transportthrough our traffic management plans, which will seek to limit the number
of vehicle movements and hours of operation, identify the most suitable site
access points and any necessary highway management arrangements.
Possible effect of noise and vibration
on neighbouring areas.
The contractor would be required to implement noise and vibration control
measures at the worksite, which will be set out in the CoCP. Continuous
tunnelling would only be undertaken for a short period of time to connect the
main tunnel to the Lee Tunnel.
Possible effects on local air quality and
dust nuisance in neighbouring areas.
Preliminary findings indicate that while there is the potential for dust nuisance
effects, there are unlikely to be any significant local air quality effects at any
of the sites. The contractor would put in place air and dust control measures
at the worksite, will would be set out in the CoCP.
Table 2.4: Key issues relating to construction
Related documents:
Managing construction
Transport
Abbe Mills P mping Station
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Abbey Mills Pumping Station
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Section 3: Future use
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 we have progressed the
design for the permanent use and appearance of the
structures at Abbey Mills Pumping Station. The design
of the permanent proposals follows our scheme-wideprinciples and takes into account comments made
and ongoing engagement with the London Borough of
Newham and other technical consultees.
Our permanent works need to incorporate functional
elements, which are required for the operation of the
tunnel. These include:
•Underground structures with ground level access covers
including: a main tunnel shaft with an internal diameter
of approximately 20m and connection works to the
Lee Tunnel.
•Three ventilation columns up to 9m high.
•Maintenance vehicle access.
Table 3.1 sets out the site specific issue that has
influenced our permanent design proposals and how we
have addressed this issue in our proposed design.
Issue Our response
The effect on the setting of
the Grade II* listed Abbey Mills
Pumping Station and character of
the Three Mills Conservation Area.
The majority of the proposed permanent works on this site would be below or at
ground level so are unlikely to have any significant effects on the listed building
or Conservation Area.
The ventilation column would be modern in design, reflecting its function and the
appearance of the adjacent modern pumping station and other recent structures
that have been accommodated in this setting.
Table 3.1: Site specific issue that has influenced our permanent design
Future use
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F u t ur e
u s e
Future use
19
Figure 3A: Aerial view of the completed works
Related documents:
Design
Figures 3A and 3B provide illustrations of our design
proposals. Further information on the development of our
design can be found in the Design development report.
Abbey Mills Pumping Station
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Abbey Mills Pumping Station
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Figure 3B: Layout of site once construction works complete
Lee Tunnelshaft
Access for maintenance vehicles from existing
road within Abbey Mills Pumping Station site
Fans and filters for odour treatmentprovided by Lee Tunnel projectVentilation columns
Three MillsStudios
Fence around Lee Tunnel
and Thames Tunnel shafts
Grassed area
C h a n n
e l s e
a R i
v e r
N
Future use
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Future use
21
Operation and maintenance
Once the tunnel is operational, we expect to undertake
inspection and maintenance of the ventilation and below
ground equipment approximately once every three to six
months. This would be undertaken within our site and as
part of the existing maintenance routine.
Once every ten years, we expect to carry out a major
internal inspection of the tunnel and underground
structures. This is likely to involve a small team of
inspection staff, a small team of support crew and two
mobile cranes to lower the team and inspection vehicle
into the shaft. This is likely to take several weeks, and
would all be undertaken within our site.
We may also need to make visits to the site for unplanned
maintenance or repairs, for example, if there is a
blockage, or equipment failure. This may require the use
of mobile cranes and vans.
Permanent vehicular access would be from within the
pumping station site, accessed from Gay Road.
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 these issues and how we are
currently proposing to address them.
Issue Our response
Possible odour effects during
the operation of the tunnel.
Odour effects at this site are expected to be negligible because we have developed
an Air management plan to minimise possible odour and air quality effects arisingfrom the operation of the tunnel. The technology we are proposing to use at this site
includes a mechanical ventilation system that draws air through the tunnel with fans
before cleaning the air using carbon filters that will absorb possible odour before air
leaves the ventilation equipment.
Disturbance from future
maintenance access.
The permanent access to our site would remain unchanged and visits would be
undertaken as part of the existing maintenance routine.
Table 3.2: Key issues relating to site operation
Related documents:
Odour
Further information
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Further information
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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.
Changes
Explains how the scheme has changed compared to that presented at phase one
consultation, including changes to the tunnelling strategy for the main tunnel and
changes to sites.
Q&A Consultation
Sets out the consultation we have undertaken to date on the project, the scope
of this phase two consultation and how interested parties can respond to thisconsultation.
DesignContains the design principles which have influenced the permanent appearance of
our sites once construction work is complete.
EnvironmentSets out the process the project is following to assess potential environmental effects
of the Thames Tunnel project.
Managing
construction
Includes information on what measures our contractors will put in place at our sites
during construction.
Odour Sets out our Air management plan and how it will work.
Options Outlines the various ways to deal with sewage overflows.
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).
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Phase two public consultation material
Icon Title Details
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.
Site selection Sets out the process we followed to find and select our preferred sites.
Transport Contains information on the different transport options we have considered fordelivering and removing materials from our sites.
Site information papers provide information that relate to each preferred site along the route of the Thames Tunnel
project. The following site information papers may be of particular interest.
Beckton Sewage Treatment Works
Chambers Wharf CW
BSTW
Further information
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Further information
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Technical reports
Theme Icon Title Details
Phase one
consultation1
SUMMARY
Report on phase one
consultation:
summary report
Provides a summary of the comments made at phase one
consultation and our responses.
Phase two
construction
information
Code of construction
practice Part A:
General requirements
(CoCP)
Sets out control measures to be adopted during the project
construction period.
Phase two
environmental
information
Air management
plan
Outlines the methods which we will use to manage odour
from the main tunnel at all our preferred sites.
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 27 of the non-technical
summary and volume 27 of the PEIR for more informationon this site.
Phase two scheme
development
Design development
report
Provides a general overview of how the scheme design at
each site has evolved to date. Please refer to chapter 21 for
more information on this site.
2
Phase two scheme
development report
Provides an overview of the development of the Thames
Tunnel project and how each site was chosen. Please refer to
Appendix W for more information on this site.
Site glossary
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Site glossary
Term Definition
Carbon filters Filters that remove odours before the air is released from the tunnel.
Combined sewer A single sewer system that takes both rainwater and domestic and industrial wastewater.
Combined sewer
overflow (CSO)
A structure, or series of structures, that allows sewers to overflow into the river when they
are full as a result of increased rainfall. Without the overflows, the sewers would back up
and cause flooding in streets or houses.
Connection tunnel A tunnel connecting a drop shaft to the main tunnel.
Conservation areaAn area designated by the local authority or English Heritage as having special
architectural or historical interest.
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/connection
tunnel drive site
A site that would be used to construct the main tunnel or connection tunnel. The excavated
material would be removed from the tunnel and the concrete tunnel lining segments would
be delivered to the tunnel at the main/connection tunnel drive site.
Main tunnel/connection
tunnel reception site
The tunnel would be constructed from a drive site to a reception site. Once the tunnel
arrives at the reception site, the tunnel boring machine would be dismantled and removed.
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.
Secondary lining A second, internal lining to the tunnel, giving it additional strength.
Thames Tunnel project The Thames Tunnel project comprises a storage and transfer tunnel, from west London toBeckton Sewage Treatment Works in east London, and the control of 34 CSOs along the
Thames 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.
Tunnel boring machine
(TBM)
A machine used to excavate tunnels through a variety of conditions, with a circular
cross-section.
8/3/2019 P2 Abbey Mills Pumping Station SIP
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8/3/2019 P2 Abbey Mills Pumping Station SIP
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Abbey Mills Pumping Station
8/3/2019 P2 Abbey Mills Pumping Station SIP
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Phase two consultation: Abbey Mills Pumping Station
110-ED-PNC-00000-000067
For further information or to comment on ourproposals see our website:
www.thamestunnelconsultation.co.uk
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.
Autumn 2011