Job No

260637-00

Drawing No Issue

MWP2-ARP-XX-XX-DR-CF-80211 P1

Drawing Status

Preliminary

Job Title

Client

63 St Thomas StreetBristol BS1 6JZ+44 117 976 5432www.arup.com

0 270 540135

Metres

LegendSite boundary

Change in Flood ExtentDecrease in Flood Extent:Was inundated in 'basecase', now is flood freeIncrease in Flood Extent:Was not inundated in 'basecase', now is inundated

Difference in PeakFlood Levels (m)

< - 0.20-0.20 to -0.15-0.15 to -0.02-0.02 to -0.01-0.01 to 0.010.01 to 0.020.02 to 0.100.10 to 0.150.15 to 0.2> 0.20

!°

© Arup

London Borough of Enfield

Meridian Water Phase 2

A3

\\Global\london\PTG\ICL-JOBS\260000\260637-00 Meridian Water Phase 2\4 Internal Project Data\4-44 Flood Risk\FloodModelling\030_MasterplanModelling\MXD\Meridian_Masterplan Dec FRA Maps.mxd

13/0

1/20

20 1

6:14

:25

Post Mitigation Flood Risk:Impact on Peak Flood Level1 in 100 Years + 35% Climate Change

Scale at A3

1:10,000

Issue Date By Chkd Appd

P1 10/01/2020 TH TH JN

Contains OS data © Crown Copyright and database right 2019

4

Meridian Water

Pymmes Brook

Flood attenuation capacity

1/10 yr event = 2000m3

0.4m depth

01. Wetland Basins

- Concrete channel base retained - Partial naturalisation of river edge within Park.

/ wetland positioned along brook edge

02. Low Flow Channel

- Concrete channel base retained- Additional permanent tributary added around meander (new

- Partial naturalisation of river

- Flood alleviation areas / wetland forms network of interlocking tributaries and pools connecting to river

03. Partial Re-routing

- River partially rerouted outside of existing channel. Existing

- New channel to have naturalised river bed.

/ wetland positioned along new river edge.- Continuous wetland “strip” created along length of park.

04. Full Re-routing

- River path moved east of current

- New channel to have naturalised river bed.- Full naturalisation of river edge- Flood Alleviation areas / Wetland occupy new meander pockets

Key

Following feedback from the EA’s guidance to maximise the extent of the naturalisation of both base and edge Pymmes Brook wherever possible, the following studies look at the potential repositioning of the riverbed.

on usable recreational area and programming requirements, which must be balanced.

Strategic InfrastructureRiver Works

N

4050

100 Metres20010

Scale 1:2000

30

Leeside Road

Glover Drive

North Circular Road

Riv

er L

ee N

avig

atio

n

Salm

ons

Broo

k

Harbet RoadPymmes Brook

River Lea

eSR

eSR

eSR

SW SW

SW SW SW

SW

SW

SW

SW

SW

SW

SW

SWSW

SWSW

SW SW SW

SW SW SW

SW

SW

SW

SW

SWSW

SWSW

SWSW

SW

SWSW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SWSW

SWSW

SWSW

SW

SW

Notes1. All levels are given in metres above Ordnance

Datum (mOD)2. All dimensions in millimetres unless noted

otherwise.3. Refer to drawings MWP2-ARP-XX-XX-DR-CD-70501

to 70503 for drainage standard details.4. Manholes currently shown are indicative to show

change in network direction or change in pipediameter. Further assume manholes are locatedalong the carrier drains at approximately 40minterval.

5. Proposed collector pipe & SUDS connection areindicative and subject to change.

6. Drainage pipes should be composed of materialsresistant to the contaminants identified during siteinvestigations. Precautions should be incorporatedwithin any service trenches to prevent suchtrenches acting as a preferential path for leachatemigration off site.

Legend:SIW Application Boundary

Proposed SW Network(Attenuated Network)

Proposed SW Network(Canal Dischage Network)

Proposed SW Manhole

Proposed Headwall Outlet

Proposed Collector Pipe

Proposed SUDS Connection

Proposed Tree Pit

SW

SW

A1 A B C D E F G H I J K L M N

1

2

3

4

5

6

7

8

9

10

11

Do not scale

Arup Job No

Suitability

Name

Rev

Project Title

Client

© Arup

Rev Date By Chkd Appd

Key Plan

Role

Scale at A1

Drawing Title

Unit E03, The Biscuit Factory100 Clements RoadLondon SE16 4DGTel +44(0)20 7566 6300

MWP2-ARP-XX-XX-DR-CD-40001

P06

1:2000

S2 - Suitable for Information

Civil Engineer - Drainage

260637-00

Site WideSurface Water DrainageProposed Strategy

Meridian Water Strategic Infrastructure Works

13 Fitzroy StreetLondon W1T 4BQTel +44(0)20 7636 1531www.arup.com

Updated following design development

P02 22/03/19 TB PC JN

Outline Planning Issue

P03 21/06/19 TB PC JN

Updated following design development

P04 04/11/19 TB PS JN

JNPSTB19/12/19P05

Updated following comments received

Updated Planning Issue

P06 03/03/20 TB PS JN

N

Refer toMWP2-ARP-XX-XX-DR-CD-40101

Refer toMWP2-ARP-XX-XX-DR-CD-40102

Refer toMWP2-ARP-XX-XX-DR-CD-40103

Refer toMWP2-ARP-XX-XX-DR-CD-40104

Leeside Road

Glover Drive

North Circular Road

Riv

er L

ee N

avig

atio

n

Salm

ons

Broo

k

Harbet Road

Pymmes Brook

River Lea

Legend:SIW Application Boundary

LBH Highway Works Boundary

Notes1. Existing level information is based on the

topographical survey from Terrain between Julyand Sept 2018.

2. Levels are in metres above Ordnance Datum(mOD).

A1 A B C D E F G H I J K L M N

1

2

3

4

5

6

7

8

9

10

11

Do not scale

Arup Job No

Suitability

Name

Rev

Project Title

Client

© Arup

Rev Date By Chkd Appd

Key Plan

Role

Scale at A1

Drawing Title

Unit E03, The Biscuit Factory100 Clements RoadLondon SE16 4DGTel +44(0)20 7566 6300

MWP2-ARP-XX-XX-DR-CE-31101

P02

1:2000

S2 - Suitable for Information

Civil Engineer - Earthworks

260637-00

Proposed Formation Ground LevelsIsopach

Meridian Water Strategic Infrastructure Works

13 Fitzroy StreetLondon W1T 4BQTel +44(0)20 7636 1531www.arup.com

Preliminary Issue

P01 16/04/19 TB PC JN

Outline Planning Issue

P02 21/06/19 TB PC JN

N

N

100 Metres40100

Scale 1:2000

20

Formation Level Cut & Fill Table

MINIMUM LEVEL

-8.00

-3.00

-2.00

-1.50

-1.00

-0.50

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

MAXIMUM LEVEL

-3.00

-2.00

-1.50

-1.00

-0.50

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

5.00

COLOUR

00

Meridian Way

A7330

EE7330173301

FF

7330173301

G

G

73301

73301

H H73301 73301

I I73301 73301

Matchline. Refer Drawing MWP2-ARP-Z2-XX-DR-CH-73201Matchline. Refer Drawing MWP2-ARP-Z2-XX-DR-CH-73201

Legend:SIW Application Boundary

LBH Highway Works Boundary

Major Contour

Minor Contour

10.0

Notes1. Existing level information is based on the

topographical survey from Terrain between Julyand Sept 2018.

2. Levels are in metres above Ordnance Datum(mOD).

3. Major Contours are shown at 0.50m intervals andMinor Contours are shown at 0.10m intervals.

PlanScale: 1:500

A1 A B C D E F G H I J K L M N

1

2

3

4

5

6

7

8

9

10

11

Do not scale

Arup Job No

Suitability

Name

Rev

Project Title

Client

© Arup

Rev Date By Chkd Appd

Key Plan

Role

Scale at A1

Drawing Title

Unit E03, The Biscuit Factory100 Clements RoadLondon SE16 4DGTel +44(0)20 7566 6300

MWP2-ARP-Z2-XX-DR-CH-73202

P01

1:500

S2 - Suitable for Information

Civil Engineer - Highways

260637-00

Glover Drive & IKEA AccessPlan Sheet 2

Meridian Water Strategic Infrastructure Works

13 Fitzroy StreetLondon W1T 4BQTel +44(0)20 7636 1531www.arup.com

Outline Planning Issue

P01 21/06/19 TB JN JN

N

10 20 Metres50

Scale 1:500

N

Job No

260637-00

Drawing No Issue

MWP2-ARP-XX-XX-DR-CF-80105 P03

Drawing Status

Preliminary

Job Title

Client

63 St Thomas StreetBristol BS1 6JZ+44 117 976 5432www.arup.com

0 340 680170

Metres

Legend

Site boundary

Flood Depth (m)

< 0.2

0.2 - 0.4

0.4 - 0.6

0.6 - 0.8

0.8 - 1.0

1.0 - 1.2

1.2 - 1.4

> 1.4

!°

© Arup

London Borough of Enfield

Meridian Water Phase 2

A3

\\Global\london\PTG\ICL-JOBS\260000\260637-00 Meridian Water Phase 2\4 Internal Project Data\4-44 Flood Risk\FloodModelling\020_BaselineAssessment\tuflow\results\ExtractedResults\Meridian_BaselineFloodDepth_Plans.mxd

14/0

8/20

19 1

0:10

:35

Existing Flood Risk:Flood Depth1 in 100 Years + 35%Climate Change

Scale at A3

1:12,500

Issue Date By Chkd Appd

P03 2019-08-14 TH DvdL JN

Contains OS data © Crown Copyright and database right 2018

8.5

9.0

9.0

9.5

9.5

10.0

10.0 8.5

9.09.5

10.0

_______Salm

ons

Broo

k

Pym

mes

Bro

ok

119

120115

118118

18

35

2

43

6869

71

107

9

72

34

97

201936

40 41

33

65

70

70

67

54

51

4946

116

31

73

78

72

94

75

133

133

135

135

116

112

101

101

21

21

11

11

73

74

72

78

26

96

109

6

6

9

31

23

24

32

15

292827

30

2225

14

16

45

13

48

50

52

55

12

56

21

57

115

127

137

134

126

108

106

125

129

132

110

136

117109

122121

123

133116

113

135

118

114

128

131130

124

107

100

60

45

7798

93

72

911

18

101

95

8 633964

31

4238

10

44

73

74

99

102

104

88 8382

78

9084

81

89

86

1

85

6

7

9192

61

79

105

17

Legend:SIW Application Boundary

Major Contour

Minor Contour

Extent of Retaining Wall

10.0

Notes1. Existing level information is based on the

topographical survey from Terrain between Julyand Sept 2018.

2. Levels are in metres above Ordnance Datum(mOD).

3. Major Contours are shown at 0.50m intervals andMinor Contours are shown at 0.10m intervals.

A1 A B C D E F G H I J K L M N

1

2

3

4

5

6

7

8

9

10

11

Do not scale

Arup Job No

Suitability

Name

Rev

Project Title

Client

© Arup

Rev Date By Chkd Appd

Key Plan

Role

Scale at A1

Drawing Title

Unit E03, The Biscuit Factory100 Clements RoadLondon SE16 4DGTel +44(0)20 7566 6300

MWP2-ARP-XX-XX-SK-002

P02

NTS

S2 - Suitable for Information

Civil Engineer - Utilities

260637-00

Existing Land Parcel BoundariesProposed ContoursSketch

Meridian Water Phase 2

13 Fitzroy StreetLondon W1T 4BQTel +44(0)20 7636 1531www.arup.com

For Information

P01 01/07/20 TB EF JN

For Information

P02 10/12/20 TB EF JN

N

N

Land Parcel Boundary

100 Metres40100

Scale 1:2000

20

2

eW2

eW2

eW2

eW2

eW2

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eW1

eW1

eW1

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eFR

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eFReFReFReFR

eFR

eS

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eS

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eSeS

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eS

_______

North Circular Road

Harbet Road

Riv

er L

ea N

avig

atio

n

Central Spine Road

8.400m

8.300m 8.200m

8.600m

8.200m

11.000m

24.7

m

14m

Legend:SIW Application Boundary

Proposed Major Contour(0.5m increments)

Proposed Minor Contour (0.1m increments)

10.0

A1 A B C D E F G H I J K L M N

1

2

3

4

5

6

7

8

9

10

11

Do not scale

Arup Job No

Suitability

Name

Rev

Project Title

Client

© Arup

Rev Date By Chkd Appd

Key Plan

Role

Scale at A1

Drawing Title

Unit E03, The Biscuit Factory100 Clements RoadLondon SE16 4DGTel +44(0)20 7566 6300

MWP2-ARP-XX-XX-SK-007

P01

1:1000

S2 - Suitable for Information

Civil Engineer - Utilities

260637-00

Proposed EarthworksEdmonton Marshes Exclusion ZoneLayout

Meridian Water Phase 2

13 Fitzroy StreetLondon W1T 4BQTel +44(0)20 7636 1531www.arup.com

For Information

P01 26/01/21 TB EF JN

N

N

50 Metres2050

Scale 1:1000

10

Notes1. Do not scale off this drawing.2. All dimensions are in metres unless otherwise

noted.3. The coordinate system used is Ordnance Survey

Grid.4. Private utilities are not shown on this drawing and

not all public utilities may be shown on thisdrawing. The Contractor is responsible forverifying the location of all existing utilities prior tocommencing any works.

Ground levels within hatch unchanged.

Existing Tower ZBD038

_______

Leeside Road

Glover Drive

North Circular Road

Riv

er L

ee N

avig

atio

n

Salm

ons

Broo

k

Harbet Road

Pymmes Brook

River Lea

eBT

eG2

eG2

eG2

eG2

eG2

eG1

x

x

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xeF

x

x eF

xx

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xx

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Legend:SIW Application Boundary

LBH Highway Works Boundary

TWUL Water Tunnel

TWUL 54" Raw Water Main

TWUL 84" Conduit to Coppermills

Sludge Rising Main

Notes1. Existing level information is based on the

topographical survey from Terrain between Julyand Sept 2018.

2. Levels are in metres above Ordnance Datum(mOD).

eW1

eW2

eFR

A1 A B C D E F G H I J K L M N

1

2

3

4

5

6

7

8

9

10

11

Do not scale

Arup Job No

Suitability

Name

Rev

Project Title

Client

© Arup

Rev Date By Chkd Appd

Key Plan

Role

Scale at A1

Drawing Title

Unit E03, The Biscuit Factory100 Clements RoadLondon SE16 4DGTel +44(0)20 7566 6300

MWP2-ARP-XX-XX-DR-CE-31101

P02

1:2000

S2 - Suitable for Information

Civil Engineer - Earthworks

260637-00

Proposed Formation Ground LevelsIsopach

Meridian Water Strategic Infrastructure Works

13 Fitzroy StreetLondon W1T 4BQTel +44(0)20 7636 1531www.arup.com

Preliminary Issue

P01 16/04/19 TB PC JN

Outline Planning Issue

P02 21/06/19 TB PC JN

N

N

100 Metres40100

Scale 1:2000

20

Formation Level Cut & Fill Table

MINIMUM LEVEL

-8.00

-3.00

-2.00

-1.50

-1.00

-0.50

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

MAXIMUM LEVEL

-3.00

-2.00

-1.50

-1.00

-0.50

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

5.00

COLOUR