P2 KEMP SIP

8/3/2019 P2 KEMP SIP

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Introd

uction

King Edward MemorialPark Foreshore

Currently, untreated sewage regularly overows into the River Thames from Londons Victorian sewerage systemvia combined sewer overows (CSOs). The proposed Thames Tunnel would intercept these overows through theuse 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 King Edward Memorial Park Foreshore.

Thames Tunnel

Siteinformationpaper

1

Key facts

Local authority: Tower Hamlets

CSO name: North East Storm Relief

CSO spill volume in an average year: 780,000m (equivalent to approximately

312 Olympic swimming pools)

Site type: CSO site

Duration of main construction works: Approximately three and a half years.


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King Edward Memorial Park Foreshore

2

Section 1: Introduction and site informationWe are proposing to use the foreshore of the River

Thames adjacent to King Edward Memorial Park for this

construction work, and to accommodate permanent

structures required to operate the main tunnel. The site

would be used to connect the existing local CSO, known

as the North East Storm Relief CSO, to the main tunnel.

An area within King Edward Memorial Park would also be

used temporarily for our construction works.

The location of the site is shown in Figure 1A. Part of

the site would be located within the foreshore of the

River Thames, with the remainder of the site located

within the multi-purpose sports area and park depot

in the south western corner of King Edward Memorial

Park. The Thames Path runs along the riverside and is

located within the site. To the north of the park is The

Highway (A1203). Free Trade Wharf, an apartment block,

is located to the east. To the south is Shadwell Basin

Outdoor Activity Centre and apartment blocks and to thewest is Glamis Road. The site is within the Wapping Wall

Conservation Area.

Related documents:

Build

This site information paper sets out our proposals at King

Edward Memorial Park Foreshore. We have also producedproject 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: King Edward Memorial Park Foreshore location plan

N

Shadwell Basin

King EdwardMemorial

Park

North EastStorm Relief CSO

Free Trade Wharf

CableStree

t

TheHighway

Glam

is Road

TOWER HAMLETS

SOUTHWARK

Local authority boundary

Draft limit of land to beacquired or used

Proposed tunnelroute centreline

Existing sewer

Existing CSO


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4

How we chose this site

What we proposed at phase one consultationAt phase one consultation, which was held between

September 2010 and January 2011, we presented King

Edward Memorial Park Foreshore as our preferred site

to intercept the existing North East Storm Relief CSO.

We proposed to directly intercept the existing sewer and

connect the CSO to the main tunnel within the foreshore

of the River Thames.

Why we have amended our proposals

Since January 2011, we have considered the comments

from phase one consultation, feedback from ongoing

engagement and new information; and undertaken

further technical work. This work led us to review potential

sites to intercept the CSO and how to connect it to the

main tunnel.

Since phase one consultation we have:

Looked again at the layout of our phase one

consultation foreshore site and access requirements.

Re-assessed all potential sites that could be used to

intercept the CSO.

Investigated options where the CSO could be

intercepted within King Edward Memorial Park with

a separate site being used to connect the CSO to the

main tunnel.

As a result of this work, an option could be to use King

Edward Memorial Park with a site at Heckford Street to

connect the CSO to the main tunnel. In order to seek

feedback on this potential preliminary working option,

in July 2011 we held drop-in sessions for the local

community to understand the options proposed at King

Edward Memorial Park Foreshore and Heckford Street. Wereviewed all the comments we received and took these

into account as part of the site selection process.

What we are proposing at phase two consultationWe have identified two shortlisted sites where we

would be able to intercept the CSO and connect to the

main tunnel within the site. The sites, as shown on

Figure 1B, are:

King Edward Memorial Park (site 1)


(our preferred site).When comparing, site 1 King Edward Memorial Park

with King Edward Memorial Park Foreshore, we concluded

that King Edward Memorial Park would be less suitable

because using the park would involve the temporary loss

of a large area of public open space and would be likely

to cause more disruption to users of the park.

In addition, we have identified three further shortlisted

sites, where the connection to the main tunnel would bemade at a separate site in conjunction with intercepting

the CSO within part of King Edward Memorial Park. The

sites, as shown on Figure 1B, are:

Heckford Street (site 2)

Shadwell Basin (site 3)

Limehouse Basin (site 4).

We decided that using Site 3 Shadwell Basin andSite 4 Limehouse Basin would be less suitable thanHeckford Street (site 2) because it would be technically

challenging to undertake the construction works within

water basins, the sites have poor access and they

are further away from the CSO. This means a longer

connection tunnel would be required from one of these

sites to the CSO in King Edward Memorial Park.


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Introduction

5

Figure 1B: Preferred and shortlisted sites

Site 1

Site 2

Site 3

Site 4

N

TOWER HAMLETS

SOUTHWARK

Preferred site King Edward Memorial

Park ForeshoreOther shortlistedsite locations

Local authorityboundary


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6

The alignment of the main tunnel varies depending upon

where the CSO is connected to the main tunnel. Figure

1C shows how the CSO is connected to the main tunnel

and the different alignments of the main tunnel for KingEdward Memorial Park Foreshore and Heckford Street.

When comparing the sites, our conclusion is that, on

balance, King Edward Memorial Park Foreshore should

remain our preferred site. We propose to reduce thesize of the construction site in the foreshore of the

River Thames compared with our proposals at phase

one consultation, which would reduce the effect on

the foreshore and adjacent residential area. Office andwelfare buildings would be located in the depot and

hardstanding areas in the south western part of the

park. Our proposed temporary construction access has

moved from the north eastern corner of the park, off The

Highway (A1203), to Glamis Road. A significant length

of river frontage adjacent to the Rotherhithe Tunnel

ventilation shaft will remain accessible throughout the

construction period, as will the vast majority of the park.

After the construction works are completed, this accesswould remain and would offer an improved route for

the Thames Path to be integrated with the park. On

completion of our work, the park would be enlarged

due to the extension into foreshore. There would also

be opportunities to reinstate recreational facilities and

enhance the park facilities.

Related documents:

Q&A Consultation

Site selection

Site 2 Heckford Street is a shortlisted site that wouldneed to be used together with a site in King Edward

Memorial Park. This option is considered less suitable than

our preferred site because the combination of both sitesand the additional tunnelling works would be likely to

take longer, cause more disruption to both park users and

the local community, and put more traffic on local roads.

The site would result in the disruption and potential loss

of some businesses in an area where the local authority

is seeking to protect employment uses. The use of this

site would also result in greater effects on people living

and working near this site in comparison to our preferred

site as it would not be possible to utilise the River Thamesfor movement of materials. Furthermore the tunnels

would pass below significantly more buildings and the

connection tunnel would be at much shallower depth.


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Introduction

7

N

Figure 1C: Connecting North East Storm Relief CSO to the main tunnel

TOWER HAMLETS

SOUTHWARK


Tunnel centre line(preferred site)

Tunnel centre line (site 2)

Existing sewer

Existing CSO

Preferred site King Edward Memorial

Park ForeshoreSite 2 Heckford Street

Connection tunnel

Worksite for CSOinterception

Worksite for shaftconstruction

Controlled (day time) crossing open unless road requiredby construction activities


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8

Section 2: Construction

Construction activitiesConstruction activities are required to intercept the CSO.We would construct an interception chamber to intercept

the CSO. A connection culvert would link the interception

chamber to a drop shaft (approximately 60m deep)

through which flows would pass into the main tunnel.

Figure 2A illustrates the below ground infrastructure

proposed. As the construction works would take place

within the foreshore of the River Thames, a permanent

structure projecting into the foreshore is required. Theseactivities would take place within the area indicated by

the red line in Figure 1A, in four main phases, lasting

approximately three and a half years in total. The main

construction activities associated with these phases are

set out in Table 2.1.

After completion of the works and site restoration we

may need to visit the site for short periods to support

finishing works at the bottom of the drop shaft, which willbe carried out from within the main tunnel and serviced

from the site at Chambers Wharf. For example, we may

need to provide ventilation for the workers in the main

tunnel and a means of emergency escape.

Related documents:

Build

Managing construction


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Construction

Construction

9

Main tunnel

Drop shaftValve chamber

Existingoverfowto River Thames

Interceptionchamber

Existing sewer

Connection culvert

Figure 2A: Illustration showing typical elements of below ground infrastructure


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Advance works

Phase 1

Site setup

Figure reference Figure 2C

Typical working hours Varies Standard

Mainconstructionactivities

Utilities connected

Utilities diverted or protected

Pre-construction landscape works carried out

Site cleared

Temporary works in River Thames constructed

Site facilities and access set up

Drop shaft excavated and built

Above and below ground structures constructed

Mechanical and electrical equipment installed

Temporary works in the River Thames removed

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 Saturdays

Continuous: 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

11

Phase 2

Drop shaft

construction

Phase 3

Construction of

other structures

Phase 4

Completion of

works and siterestoration

Figure 2D Figure 2E

Standard with occasional

extended standardStandard Standard

* 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 phasesFigures 2C, 2D and 2E show how the site might be laid

out during the construction phases, which are set outin Table 2.1 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. Particular factors at this site

that have influenced the layout are as follows:

Since phase one consultation, the temporary office andwelfare buildings required to service the construction

site have been moved from the foreshore of the River

Thames to the multi-purpose sports area and park

depot in the south western corner of the park. A smaller

area of foreshore is now required for the construction

works, thereby reducing potential effects on river

ecology, river navigation and river users.

The access route to the site has been amended since

phase one consultation. The proposed access at phaseone consultation was from the north of the site, directly

off The Highway (A1203). We are now proposing to

access the site from the south west, off Glamis Road.

The proposed construction access would reduce the

effects of construction traffic on the strategic highway

network and provide a safer access to the site via an

existing traffic light controlled junction.

In addition the new access road avoids a wildlifemeadow in the eastern part of the park and is also

located further from the Free Trade Wharf residential

development and the access to Free Trade Wharf. The

proposed access route through the park runs parallel to

the river frontage and offers an opportunity to reinstate

the Thames Path with improved pedestrian and cycle

access on completion of the project.

The site layouts are indicative only, and the contractormay 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.P1

P2

P3

P4

Advance

works

Year 1 Year 2 Year 3 Year 4

Figure 2B: Construction timeline showing approximateduration of works in phases (P)


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Construction

13

Figure 2C: Illustrative phase 1 construction plan

N

Jack up bargeservicing piling

operationsBarge

Maximum extent ofconstruction site for

phase 1Site hoarding

Cofferdam

Local authorityboundary

Site support/welfare

Internal site roadSite access

Existing Thames Path

Thames Path diversion

TOWER HAMLETS SOUTHWARK

Controlled (day time)crossing openunless required byconstruction activities

Diversion only required when

internal site road in use


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Figure 2D: Illustrative phase 2 construction plan


Diversion only required wheninternal site road in use

Drop shaft

Crane

Piling rig

N

Maximum extent ofconstruction site forphase 2

Site hoarding

Cofferdam



Excavated materialstorage and processing

Maintenance workshopand storage

Construction supportInternal site road

Site access




Barge


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Construction

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Option for contractorto transport materialsusing barges


Diversion only required wheninternal site road in use

Drop shaft

Cranes

N

Maximum extent ofconstruction site forphase 3

Site hoarding

Cofferdam



Excavated materialstorage and processing

Construction support

Internal site road

Site access




Figure 2E: Illustrative phase 3 construction plan

Ki Ed d M i l P k F h


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Additional works and activitiesThe main construction activities at this site are set out in

Table 2.1. We would also need to undertake additional

works 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 equipmentto monitor environmental

matters such as noise,

vibration and dust.

The locations of monitoring equipment would be agreed with the

local authority and relevant landowners.

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.

If protection works are required to the existing sewer, we would

access the sewer network through existing manholes.

Diversion of utilities.If utility diversions are required, we would work with utility providers

to undertake the necessary works.

Temporary connection

to utilities (such as

water, sewer, phone and

electricity).

We expect to connect to water, sewer and phone supplies in Glamis

Road or The Highway (A1203).

We may need to connect to a power supply in Welclose Square,

running cables long Cable Street and Glamis Road. However, we are

still developing a route for electricity supply in discussion with the

utility provider.


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Construction

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Table 2.2: Additional works and activities

When Type of works What we would do

Required for

construction

phase

Traffic management works.

These may need to extend beyond our site and could include

relocating kerb lines, repainting road lines and modifying traffic

signals.

Dredging.

There is a possibility that as the detailed design is developed we may

need to undertake dredging to allow barges to get to and from our

site.

Protection of river bed.We may need to carry out works to strengthen the river bed to avoid

scour.

Landscaping works

completed in advance of the

main construction works.

We would reconfigure and relocate the multi-purpose sports area,

childrens playground and memorial benches within the park. The

memorial benches would be moved to a new permanent location as

shown in Figure 3D. We would dismantle the bandstand and store it

so that it can be re-erected at the end of construction works. Paving

and landscaping works to the seating area next to the Rotherhithe

Tunnel ventilation shaft would also be undertaken.

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 in Glamis Road or The Highway

(A1203).

Landscaping works.

The multi-purpose sports area would be reinstated in its existing

location. We would relocate the childrens playground to a new

permanent location within the park, as shown in Figure 3E.

King Ed ard Memorial Park Foreshore


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Construction transport and accessWe propose to use barges to bring in and take away the

material used to fill the cofferdam and to take away

excavated material from the shaft. It is not generally

practical and cost effective to transport all materials

to and from the site by barge so we would still need to

transport some materials by road. We would however

give the contractor the flexibility to determine the most

practical and cost-effective means of transporting other

materials and equipment.

Each barge would remove approximately 55 lorries from

the road. Using barges at this site would reduce the

number of lorry visits to/ from this site by approximately

55% (saving 12,000 lorry visits over the construction

period of approximately three and a half years). Table 2.3

sets out the anticipated average daily number of lorries

and barges visiting (ie travelling to and from) the site

during the peak months of each phase, based on moving

cofferdam fill material by barge.

Construction traffic would access the site from The

Highway (A1203), travelling south down Glamis Road and

turning left into the site from a new entrance on Glamis

Road. Traffic would leave the site via the same route.

This access route is shown on Figure 2F. Beyond this,

construction traffic would use the major road network to

get to and from its final destination.

We may need to suspend or relocate some coach parking

bays on Glamis Road during construction. We may also

need to make some modifications to the junction of

Glamis Road and The Highway (A1203) to accommodate

construction traffic turning into Glamis Road.

The Thames Path currently runs through the park. Since

the Thames Path would be located within part of our

construction site, it would be necessary to temporarily

divert the Thames Path around part of our site. In order

for the diverted Thames Path to re-join the existing

Thames Path, it would need to cross our internal site

road. Should construction vehicles be using the road,

a gated access would prevent pedestrians and cyclists

crossing it. This arrangement would mean that access

to the seating area next to the Rotherhithe Tunnel

ventilation shaft, which provides views across the River

Thames, would be maintained. When the road is in use,

pedestrians and cyclists would be directed to a diversion,

which runs through the park as shown on Figures 2C, 2Dand 2E. Based on our current design we do not anticipate

that any other footpath or road diversions or bus stop

relocations would be required.

Phase 1Site setup

Phase 2Drop shaft

construction

Phase 3Construction ofother structures

Phase 4Completion ofworks and site

restoration

Average daily

lorry visits13 lorries 19 lorries 22 lorries 7 lorries

Average daily

barge visits 2 barges 1 barge none 2 barges

Table 2.3: Average daily lorry and barge visits during the peak months

Construction


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Construction

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Related documents:

Transport

Figure 2F: Proposed access route to the site from the nearest major road

RotherhitheTunnel

The HighwayPossible junction

modifications

Glamis Road

GlamisRoad

Suspensionof coachparking

A1203

A101

Left turn in,right turn out

TOWER HAMLETS SOUTHWARK N

Draft limit of land tobe acquired or used

Internal site road

Site access


Transport for London(TfL) road network

Proposed lorry access toTfL road network



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Management of construction worksOur 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 CoCPsfrom 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.

Issue Our response

Permanent relocation

of the childrens

playground, currently

located in the south

western corner of the

park.

Prior to the main construction phase, the playground would be relocated within the park.We would work with park users and the London Borough of Tower Hamlets to agree the

relocation and design of the playground.

Temporary loss of part

of the multi-purpose

sports area and some

tennis courts, located

in the south westerncorner of the park.

During construction, some of the tennis courts would be used to provide a temporary

replacement multi-purpose sports area. The multi-purpose sports area would be reinstated in

its existing location and in an improved condition following completion of construction.

Potential loss of and

damage to trees within

the park.

We have sought to minimise tree loss and damage where possible, and will propose careful

root protection, pollarding and trimming methods. Proposals for permanent site landscaping

incorporate the planting of more trees than the number expected to be lost during

construction. Where possible it is intended that landscaping would be undertaken in advance

of the main construction works commencing.

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

Construction


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Construction

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Issue Our response

Temporary diversionof the Thames Path,

restricted access to the

riverfront and possible

loss of river views.

Access to the Thames Path next to the River Thames beside the Rotherhithe Tunnel

ventilation shaft would be maintained throughout construction. Gated access across the

internal site road would allow access from the ventilation shaft to the rest of the park when it

is not being used by construction vehicles. Views over the River Thames would be temporarily

affected during construction. However, access will be maintained to the river front from parts

of the park including the new seating area beside the Rotherhithe Tunnel ventilation shaft.

Possible effect ofconstruction vehicles

on the capacity and

operation of the local

road network.

Since phase one consultation, site access has been relocated to the south west side of the

park, off Glamis Road to reduce the effects of construction traffic on the major road network

and provide safer site access.

We would manage the effects of road transport through 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.

As already set out, we also propose to use barges to bring in and take away the majority

of material used to fill the cofferdam, which would significantly reduce the number of lorry

movements from this site over the construction period.

Temporary suspension

or relocation of somecoach parking bays on

Glamis Road.

The extent and duration of the suspension of any coach bays during construction wouldbe minimised as far as possible. We are investigating options for temporary replacement

parking provision during construction where necessary.

Possible effect of

foreshore construction

activities on river

navigation and river

users of the River

Thames, including the

Shadwell Basin Outdoor

Activity Centre.

Since phase one consultation, we have reduced the area of temporary cofferdam foreshore

extension by relocating those construction activities that do not need to be located

immediately adjacent to the main tunnel site to the areas of hardstanding on the western

side of the park, near Glamis Road.

We have undertaken modelling to test the effect that the structure has on the flow of theriver. The modelling has shown the proposed structure to be satisfactory and the Port of

London Authority and other key stakeholders are satisfied the permanent works have a

minimum effect on river navigation. A full navigational risk assessment will be undertaken

for the temporary and permanent works. Existing moorings may have to be temporarily

relocated.

Table 2.4: Key issues relating to construction



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Issue Our response

Possible effect of noiseand vibration from

construction activities

on neighbouring areas.

Since phase one consultation, we have relocated the construction site access point to Glamis

Road on the west of the site, to reduce effects on the nearest residential properties. The

contractor would also be required to implement noise and vibration control measures at the

worksite, which will be set out in the CoCP.

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, which will be set out in the

CoCP.

Possible effects on

foreshore habitat and

river wildlife within the

River Thames.

Since phase one consultation, we have reduced the area of temporary cofferdam foreshore

extension to reduce potential effects on ecology. Ecological surveys are also being

undertaken to identify possible effects arising from construction activities. The contractor

would put in place various control measures at the worksite to minimise these effects as far

as possible. These will be set out in the CoCP.

Table 2.4: Key issues relating to construction

Related documents:

Managing construction

Transport

Future use


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Future

use

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Section 3: Future use

This section describes the site after the completion of theconstruction 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 King Edward Memorial Park Foreshore. The

design of the permanent proposals follows our scheme-

wide principles and takes into account comments made

and ongoing engagement with the London Borough of

Tower Hamlets and other technical consultees.

Our permanent works which are formed within a structureextending into the foreshore of the River Thames 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 CSO drop shaft with an internal diameter

of approximately 20m, connection culverts, interception

chamber, valve chamber and a passive filter chamber.

Two main ventilation columns up to 5m high.

Two small diameter ventilation columns to the

interception chamber up to 6m high.

Maintenance vehicle access.

An electrical and control kiosk.

Table 3.1 sets out the site specific issues that have

influenced our permanent design proposals and how we

have addressed them in our proposed design.



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Issue Our response

Effect on Rotherhithe Tunnel Careful siting of foreshore extension and permanent works to avoid infringing intothe protected zone of the Rotherhithe Tunnel.

Accommodation of Cole Stairs

and Bell Wharf CSOs (two

existing local CSOs that do not

need to be intercepted as part

of the Thames Tunnel project

based on the assessment

undertaken by theEnvironment Agency).

Careful siting of foreshore extension and permanent works to ensure that the

two further CSOs not being intercepted remain operational either side of the new

structure. Avoiding interference with these CSOs ensures that they do not need to

be incorporated into the works and therefore the size of construction site required is

minimised.

Effect on King Edward

Memorial Park.

The proposed above ground structures have been reduced in size since phase

one consultation, as a result of the modified scheme-wide ventilation strategy. In

addition the proposed electrical and control kiosk has been relocated to the eastern

perimeter of the park. Removing this structure from the foreshore extension makes it

less visible and avoids interrupting views of the River Thames.

A number of architectural design developments have taken place to ensure that thearchitectural design of the above ground structures and the foreshore extension is

sympathetic to the park.

The new foreshore structure would extend the area of the park as it will be designed

to blend with the existing green space.

Effect on the setting of the

Grade II listed Rotherhithe

Tunnel ventilation shaft andcharacter of the Wapping Wall

Conservation Area.

The majority of the proposed permanent works on this site would be below or at

ground level to avoid any significant effect on the setting of the listed buildings or

character of the Conservation Area. Landscaping for the extended and reinstatedareas of the park would be designed in consultation with the relevant stakeholders to

ensure that the character of the Conservation Area is preserved and enhanced.

Future use


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Issue Our response

Effects on river navigation

and hydraulics.

We have reduced the size of the foreshore area required for permanent works sincephase one consultation by moving the shaft closer to the river wall and re-profiling

the foreshore extension to minimise effects on river flows.

Preliminary modelling has indicated that the proposed design is acceptable in terms

of river flow.

The proposals have been discussed with the Port of London Authority and other key

stakeholders to develop a layout that has a minimal effect on river navigation.

Loss of foreshore habitat and

effects on ecology within the

River Thames.

Our proposals for the permanent layout and design of the site have sought to reduce

the extent of the permanent works within the foreshore to minimise effects on water

ecology as far as possible.

Ecological surveys of the River Thames and its foreshore are being undertaken to

identify possible effects, and design measures will be incorporated where required.

Construction of the tunnel would also deliver river wide improvements to local water

quality, which would result in positive effects on river ecology, including habitat

improvements and reduced fish kills.

Effect on Thames Path.

The permanent arrangement for the access route to our site from Glamis Road

would provide an opportunity to use this as an enhanced Thames Path route for

pedestrians and cyclists. The current Thames Path off Glamis Road is via a narrow

and enclosed footway which could be widened and include potential landscaping

improvements. The design of this route would be informed by the assessments of

the current use and quality of the park along with ongoing consultation with the key

stakeholders including the local authority.Table 3.1: Site specific issues that have influenced our permanent design



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g d a d e o a a o es o e

26

Figure 3A: Photo of the site before the works

Figures 3A, 3B, 3C, 3D and 3E show the current site and

provide illustrations of our design proposals. Further

information on the development of our design can be

found in theDesign development report

.

Related documents:

Design

Future use


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Figure 3B: Artists impression of the site after the works are completed



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Figure 3C: Layout of the site showing landscape advance works

Memorial Park benchespermanently relocatedin line with Memorial

Thames Path divertedaround constructionsite hoarding

The Highway

Proposed

constructionsite

Glam

isRoad

Relocatedchildrensplay area

Paving and landscapingimprovements to areaaround Rotherhithe

Tunnel ventilation shaft

Thames Pathremains open duringconstruction

Minorreconfigurationof tennis courts

Advanced treeplanting to improveMemorial Avenue

Relocated multi-purpose sports area

N

Proposedconstruction

site

Controlled (daytime)crossing of constructionaccess route open unlessrequired by construction

activities

Future use


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Figure 3D: Layout of site once construction works complete

Grassed area aroundrelocated bandstand

Electrical andcontrol kiosk againstexisting brick wall

Relocatedbandstand

Memorial Parkbenches relocated online with Memorial

Ventilationcolumns

Seating areaActivity/fitness zone

Bike stands New gated entrance topark and Thames path

N

Footballpitch

The Highway

Glam

isRoad

Tenniscourts

Relocatedchildrens play areaFootball pitch access

Thames Path widenedand improved.Provides maintenanceaccess to shaft

New North EastStorm ReliefCSO outlet

Bowlinggreen



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Figure 3E: Aerial view of the completed works

Future use


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Operation and maintenanceOnce the tunnel is operational, we would need access

to the site occasionally for inspection and maintenance

purposes. We expect to visit the site approximatelyonce every three to six months to carry out inspections

and maintenance of the ventilation and below ground

equipment. This is likely to involve a visit by staff in a

small van, and may take several hours.

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 twomobile cranes to lower the team and inspection vehicle

into the shaft. This is likely to take several weeks, and

would require temporary fencing around the shaft for

safety and security while the inspection takes place.

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 accesswould be from Glamis Road.

Management of operational effectsWe have undertaken technical work, including stakeholder

engagement, to assess and identify the key issues

associated with this site once it is operational. Table3.2 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 developedanAir 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 the use of passive below ground carbon filters that will remove possible

odour before air leaves the ventilation equipment.

Disturbance from future

maintenance access.

Permanent access would be required for maintenance and servicing purposes to

the shaft and ventilation equipment. Any planned maintenance visits would be

undertaken during normal working hours and all visits managed to avoid disruption

to local residents, businesses and users of affected public areas as far as possible.

Table 3.2: Key issues relating to site operation

Related documents:

Odour

Further information


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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

BuildProvides 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.

Q&A ConsultationSets 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 this

consultation.

Design

Contains 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 ourAir management plan and how it will work.

Options Outlines the various ways to deal with sewage overflows.


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Phase two public consultation material

Icon Title Details

OverflowSets out how Londons 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.

Further information


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Technical reports

Theme Icon Title Details

Interim

engagement

Interim engagement

report

Provides a summary of the public engagement we

have undertaken between phase one and phase two

consultations.

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 twoenvironmental

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 ofthe Thames Tunnel project based on information collected

to date. Please refer to volume 23 of the non-technical

summary and volume 23 of the PEIR for more information

on 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 20 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 S for more information on this site.

Site glossary


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Term Definition

Carbon filters Filters that remove odours before the air is released from the tunnel.

CofferdamA wall that is constructed within the river around the outside of the working area and then

pumped dry. The inside of the cofferdam can then be filled to create a safe working area.

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 overflow, the sewer 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.

Drop shaft

A vertical circular concrete structure, used to drop flows from the high level of the CSO to

the low level of the main tunnel. It would also be used to provide access to construct the

connection tunnels.Foreshore Ground uncovered by the river when the tide is low.

Interception chamberA structure, built on an existing combined sewer, which diverts stormwater overflow into the

main tunnel.

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.

Scour Movement of the riverbed materials due to the force of the water.

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 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.


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Phase two consultation: King Edward Memorial Park Foreshore

For further information or to comment on our

proposals see our website:

www.thamestunnelconsultation.co.uk

110-ED-PNC-00000-000086

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.

P2 KEMP SIP

Documents

Transcript of P2 KEMP SIP