SlideShare a Scribd company logo
Severn Estuary SMP2 – Part B - Policy Statements
CARDIFF
This Theme area contains the Policy Units CAR 1, CAR2 and CAR 3.
It starts at Penarth Head on the west shoreline of the Severn Estuary, in the Vale of Glamorgan,
Wales and end at Lamby Way Landfill Site drain/outfall.
The Key Policy Drivers in this area are:
• International nature conservation sites – Severn Estuary SAC, SPA and Ramsar;
• Critical infrastructure – railway line, electricity substations, docks;
• Residential developments – Cardiff;
• Industrial and commercial developments – Cardiff Bay, docks;
• All Wales Coastal Path routes.
Severn Estuary SMP2 – Part B - Policy Statements
Severn Estuary SMP2 – Part B - Policy Statements
Policy Unit: CAR 1 – Cardiff Bay Barrage
Severn Estuary SMP2 – Part B - Policy Statements
Preferred Policies to Implement the Plan:
Epoch
Preferred
Policy
Comments
0 to 20
years
(2025)
HTL
The short term policy for this unit is Hold The Line
The Cardiff Bay Barrage would remain in place with some maintenance.
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
20 to 50
years
(2055)
HTL
The medium term policy for this unit is Hold The Line
The Cardiff Bay Barrage would remain in place with some maintenance.
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
50 to 100
years
(2105)
HTL
The long term policy for this unit is Hold The Line
The Cardiff Bay Barrage would remain in place with some maintenance.
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
Economics
Policy
Unit
Existing
SMP1
Policy
Time Period
(epoch)
SMP2 Assessment
0-
20
20-
50
50-
100
Preferred Plan Present Value
Damages
Preferred Plan Present Value
Defence Costs
CAR 1 HTL HTL HTL HTL
£568m
(CAR1-3, WEN1-2 total)
£24m
(CAR1-3, WEN1-2 total)
The preferred policy is economically viable.
There are no cost estimates available for the maintenance or replacement of a structure like the Cardiff
Bay Barrage. Standard ‘hard defences’ costs have been used for the Cardiff Bay Barrage (see Part A
Section 3.6). It should be noted that this underestimates
The preferred policy is economically viable for the linked Policy Units of CAR 1, CAR 2, CAR 3, WEN 1,
and WEN 2. The costs and damages of the preferred policy in the table above relate to actions taken in all
linked policy units.
the costs of maintaining the Cardiff Bay Barrage.
An increase in costs would not alter the policy option.
Severn Estuary SMP2 – Part B - Policy Statements
The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan
document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein.
Severn Estuary SMP2 Review – Final Report
5
Predicted Implication of the Preferred Plan for the CAR 1 Policy Unit
Time
Period
Management Activities
Property, Land Use and
Human Health
Nature Conservation –
including Earth
Heritage, Geology and
Biodiversity
Landscape Character
and Visual Amenity
Historic Environment
Amenity and
Recreational Use
0 – 20
years
The Cardiff Bay Barrage
is expected to remain in
place and functional with
minimal maintenance.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
Maintaining the Cardiff
Bay Barrage, the harbour
and navigable channels
will also be maintained.
A HTL policy will not
impact the nature
conservation sites during
this time period. Works
should take account of
possible environmental
impacts and the need for
an EIA.
Maintaining existing
defences will not impact
on existing landscape and
visual amenity.
Defences will manage the
risk of flooding on the
historic environment.
Defences will manage the
risk of flooding on n the
amenity value of the land
or recreational use.
20 – 50
years
The Cardiff Bay Barrage
is expected to remain in
place and functional with
minimal maintenance.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
Maintaining the Cardiff
Bay Barrage, the harbour
and navigable channels
will also be maintained.
Some coastal squeeze
will occur which will result
in loss of intertidal
habitats within N2K sites
and SSSI. Works should
take account of possible
environmental impacts
and the need for an EIA.
Maintaining existing
defences will not impact
on existing landscape and
visual amenity.
Defences will manage the
risk of flooding on the
historic environment.
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.
50 – 100
years
The Cardiff Bay Barrage
is expected to remain in
place and functional with
minimal maintenance.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
Maintaining the Cardiff
Bay Barrage, the harbour
and navigable channels
will also be maintained.
Some coastal squeeze
will occur which will result
in loss of intertidal
habitats within N2K sites
and SSSI. Works should
take account of possible
environmental impacts
and the need for an EIA.
Maintaining existing
defences will not impact
on existing landscape and
visual amenity.
Defences will manage the
risk of flooding on the
historic environment.
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.
Severn Estuary SMP2 – Part B - Policy Statements
The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan
document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein.
Severn Estuary SMP2 Review – Final Report
6
Policy Unit: CAR 2 – Western end of Cardiff Bay Barrage to mouth of
River Rhymney at Rover Way
Severn Estuary SMP2 – Part B - Policy Statements
The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan
document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein.
Severn Estuary SMP2 Review – Final Report
7
Preferred Policies to Implement the Plan:
Epoch
Preferred
Policy
Comments
0 to 20
years
(2025)
HTL
The short term policy for this unit is Hold The Line
The earth embankments will require repair and maintenance during this
epoch. Some sections may need to be replaced.
HTL manages the risk of impacts from flooding and erosion to industrial and
residential areas of Cardiff. It is part of 5 linked Policy Units (CAR 1, CAR 2,
CAR 3, WEN 1 and WEN 2). Actions should take account of potential
impacts in all linked areas.
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
20 to 50
years
(2055)
HTL
The medium term policy for this unit is Hold The Line
The existing defences will come to the end of their serviceable life in this
epoch. HTL recommends that defences are replaced. HTL manages the risk
of impacts from flooding and erosion to industrial and residential areas of
Cardiff. It is part of 5 linked Policy Units (CAR 1, CAR 2, CAR 3, WEN 1 and
WEN 2). Actions should take account of potential impacts in all linked areas.
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
50 to 100
years
(2105)
HTL
The long term policy for this unit is Hold The Line
HTL manages the risk of impacts from flooding and erosion to industrial and
residential areas of Cardiff. It is part of 5 linked Policy Units (CAR 1, CAR 2,
CAR 3, WEN 1 and WEN 2). Actions should take account of potential
impacts in all linked areas.
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
Economics
Policy
Unit
Existing
SMP1
Policy
Time Period
(epoch)
SMP2 Assessment
0-
20
20-
50
50-
100
Preferred Plan Present Value
Damages
Preferred Plan Present Value
Defence Costs
CAR 2 HTL HTL HTL HTL
£568m
(CAR1-3, WEN1-2 total)
£24m
(CAR1-3, WEN1-2 total)
The preferred policy for this unit is economically viable.
The preferred policy is economically viable for the linked Policy Units of CAR 1, CAR 2, CAR 3, WEN 1 and
WEN 2. The costs and damages of the preferred policy in the table above relate to actions taken in all
linked policy units.
Severn Estuary SMP2 – Part B - Policy Statements
The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan
document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein.
Severn Estuary SMP2 Review – Final Report
8
Predicted Implication of the Preferred Plan for the CAR 2 Policy Unit
Time
Period
Management Activities
Property, Land Use and
Human Health
Nature Conservation –
including Earth
Heritage, Geology and
Biodiversity
Landscape Character
and Visual Amenity
Historic Environment
Amenity and
Recreational Use
0 – 20
years
The shoreline will remain
stable. Earth
embankments will require
maintenance. Flood risk
is limited in this period.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
An HTL policy will not
impact the nature
conservation sites during
this time period. Works
should take account of
possible environmental
impacts and the need for
an EIA.
Defences will manage the
risk of flooding on existing
landscape and visual
amenity
Defences will manage the
risk of flooding on the
historic environment
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.
20 – 50
years
The shoreline will remain
stable. Defences will
need to be replaced in
this period. The majority
of this unit benefits from
high ground.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
Coastal squeeze will
occur which will result in
loss of intertidal habitats
affecting Severn N2K and
SSSI. Works should take
account of possible
environmental impacts
and the need for an EIA.
Defences will manage the
risk of flooding on existing
landscape and visual
amenity
Defences will manage the
risk of flooding on the
historic environment
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.
50 – 100
years
The shoreline will remain
stable. Defences should
be monitored and
maintained.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
Coastal squeeze will
occur which will result in
loss of intertidal habitats
affecting Severn N2K and
SSSI. Works should take
account of possible
environmental impacts
and the need for an EIA.
Defences will manage the
risk of flooding on existing
landscape and visual
amenity
Defences will manage the
risk of flooding on the
historic environment
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.
Severn Estuary SMP2 – Part B - Policy Statements
The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan
document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein.
Severn Estuary SMP2 Review – Final Report
9
Policy Unit: CAR 3 – Both banks of the River Rhymney from the mouth
at Rover Way to the Lamby Way landfill site drain
Severn Estuary SMP2 – Part B - Policy Statements
The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan
document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein.
Severn Estuary SMP2 Review – Final Report
10
Preferred Policies to Implement the Plan:
Epoch
Preferred
Policy
Comments
0 to 20
years
(2025)
HTL
The short term policy for this unit is Hold The Line
HTL manages the risk of flooding and erosion impacts to industrial and
residential areas of Cardiff, including transport links and Lamby Way landfill
site. Flooding at the landfill site could be harmful to water quality. Flood risk
is localised. High ground limits flood risk in some areas. HTL would require
defence structures in only some areas. Actions should take account of
potential impacts in linked Policy Units (CAR 1, CAR 2, WEN 1 and WEN 2).
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
20 to 50
years
(2055)
HTL
The medium term policy for this unit is Hold The Line
HTL manages the risk of flooding and erosion impacts to industrial and
residential areas of Cardiff, including transport links and Lamby Way landfill
site. Flooding at the landfill site area could be detrimental to the water
quality. Flood risk is localised - HTL would only require defence structures in
some places. In other areas, high ground limits the risk. Actions should take
account of potential impacts in linked Policy Units (CAR 1, CAR 2, WEN 1
and WEN 2).
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
50 to 100
years
(2105)
HTL
The long term policy for this unit is Hold The Line
HTL manages the risk of flooding and erosion impacts to industrial and
residential areas of Cardiff, including transport links and Lamby Way landfill
site. Flooding at the landfill site area would be detrimental to the water
quality. Flood risk is localised - HTL would only require defence structures in
some places. In other areas, high ground limits the risk. Actions should take
account of potential impacts in linked Policy Units (CAR 1, CAR 2, WEN 1
and WEN 2).
HTL does not guarantee funding to build or maintain current or future
defences or to counter sea level rise.
Economics
Policy
Unit
Existing
SMP1
Policy
Time Period
(epoch)
SMP2 Assessment
0-
20
20-
50
50-
100
Preferred Plan Present Value
Damages
Preferred Plan Present Value
Defence Costs
CAR 3 HTL HTL HTL HTL
£568m
(CAR1-3, WEN1-2 total)
£24m
(CAR1-3, WEN1-2 total)
The preferred policy is economically viable for the linked Policy Units of CAR 1, CAR 2, CAR 3, WEN 1 and
WEN 2. The costs and damages of the preferred policy in the table above relate to actions taken in all
linked policy units.
Severn Estuary SMP2 – Part B - Policy Statements
The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan
document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein.
Severn Estuary SMP2 Review – Final Report
11
Predicted Implication of the Preferred Plan for the CAR 3 Policy Unit
Time
Period
Management Activities
Property, Land Use and
Human Health
Nature Conservation –
including Earth
Heritage, Geology and
Biodiversity
Landscape Character
and Visual Amenity
Historic Environment
Amenity and
Recreational Use
0 – 20
years
The shoreline will remain
stable and flood risk is
limited in this period, and
as a result management
activities will be limited.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
An HTL policy will not
impact the nature
conservation sites during
this time period. Works
should take account of
possible environmental
impacts and the need for
an EIA.
Limited erosion and flood
risk will not impact on
existing landscape and
visual amenity
Defences will manage the
risk of flooding on the
historic environment.
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.
20 – 50
years
The shoreline will remain
stable. The defences will
need to be replaced in
this epoch. High ground
in most of this policy unit
limits flood risk.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
Coastal squeeze will
occur which will result in
loss of intertidal habitats
affecting Severn N2K and
SSSIs in the area. Works
should take account of
possible environmental
impacts and the need for
an EIA.
Limited erosion and flood
risk will not impact on
existing landscape and
visual amenity
Defences will manage the
risk of flooding on the
historic environment.
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.
50 – 100
years
The shoreline will remain
stable. Defences should
be maintained in the long
term.
Defences will manage the
risk of flooding on existing
property, land use or
human health.
Coastal squeeze will
occur which will result in
loss of intertidal habitats
affecting Severn N2K and
SSSIs in the area. Works
should take account of
possible environmental
impacts and the need for
an EIA.
Limited erosion and flood
risk will not impact on
existing landscape and
visual amenity
Defences will manage the
risk of flooding on the
historic environment.
Defences will manage the
risk of flooding on the
amenity value of the land
or recreational use.

More Related Content

PDF
Smp2 part b policy statements newport-usk only_final
PDF
Smp2 part b policy statements caldicot only_final
PDF
Smp2 part b policy statements tidenham only_final
PDF
Smp2 part b policy statements sharpness-sev cross only_final
PDF
Smp2 part b policy statements wentlooge only_final
PDF
Smp2 part b policy statements bristol only_final
PDF
Smp2 part b policy statements glos-haw bridge only_final
PDF
Smp2 part b policy statements portishead only_final
Smp2 part b policy statements newport-usk only_final
Smp2 part b policy statements caldicot only_final
Smp2 part b policy statements tidenham only_final
Smp2 part b policy statements sharpness-sev cross only_final
Smp2 part b policy statements wentlooge only_final
Smp2 part b policy statements bristol only_final
Smp2 part b policy statements glos-haw bridge only_final
Smp2 part b policy statements portishead only_final

What's hot (20)

PDF
Smp2 part a main report final
PDF
Smp2 part b policy statements intro sections_final
PDF
Appendix d theme review final_dec2010a
PDF
Appendix f policy development and appraisal final_dec2010
PDF
Smp2 part b policy statements glos-sharpness only_final
PDF
Appendix i part b _hra_final_dec2010
PDF
Appendix g preferred management approach testing final_dec2010
PDF
Appendix c baseline understanding final_dec2010
PDF
Appendix i part a sea annexes_final_dec2010
PDF
Smp2 part c action plan final
PDF
Appendix j wfd assessment final_dec2010
PDF
Appendix a development of the smp2 final_dec2010
PDF
Appendix h economics final dec2010
PDF
Appendix k metadata and bibliographic database final_dec2010
PDF
FEMA Policy Barring FEMA Money to Buy Out Flooded Properties with Shale Leases
PPT
Cleaning Up Munitions
PDF
US Public law - Research on effects of Ocean Disposal of Munitions
PPTX
CLME Indicators
DOCX
PPTX
Land Surveyors, FEMA and Other Flood Zone Issues
Smp2 part a main report final
Smp2 part b policy statements intro sections_final
Appendix d theme review final_dec2010a
Appendix f policy development and appraisal final_dec2010
Smp2 part b policy statements glos-sharpness only_final
Appendix i part b _hra_final_dec2010
Appendix g preferred management approach testing final_dec2010
Appendix c baseline understanding final_dec2010
Appendix i part a sea annexes_final_dec2010
Smp2 part c action plan final
Appendix j wfd assessment final_dec2010
Appendix a development of the smp2 final_dec2010
Appendix h economics final dec2010
Appendix k metadata and bibliographic database final_dec2010
FEMA Policy Barring FEMA Money to Buy Out Flooded Properties with Shale Leases
Cleaning Up Munitions
US Public law - Research on effects of Ocean Disposal of Munitions
CLME Indicators
Land Surveyors, FEMA and Other Flood Zone Issues
Ad

Viewers also liked (8)

PDF
Smp2 part b policy statements kingston seymour only_final
PPTX
батаев дамир+Fc «pavlodar»+футбольные болельщики
PDF
Smp2 part b policy statements holms only_final
PDF
Smp2 part b policy statements lydney-glos only_final
PPTX
clase 15.03.16
PDF
Smp2 part b policy statements chepstow-wye only_final
PDF
Software Escrow Services
PPTX
Evaluation question 1
Smp2 part b policy statements kingston seymour only_final
батаев дамир+Fc «pavlodar»+футбольные болельщики
Smp2 part b policy statements holms only_final
Smp2 part b policy statements lydney-glos only_final
clase 15.03.16
Smp2 part b policy statements chepstow-wye only_final
Software Escrow Services
Evaluation question 1
Ad

Similar to Smp2 part b policy statements cardiff only_final (11)

PDF
2012 06 Bristol Channel Strategic Coastal Group – Shoreline and Flood Risk Ma...
PDF
Appendix e issues and features final_dec2010
PPT
2006 06 Severn Barrage: Is the Tide Turning? - David Kerr, Sir Robert McAlpine
PDF
Appendix i part a sea_final_dec2010
PPT
2009 06 Department of Energy and Climate Change - Juliet Austin
PPT
2009 05 Wider Severn Estuary - Hance Smith
PDF
Appendix b stakeholder engagement and consultation final_dec2010
PPT
2008 03 Tidal Power: The Options Peter Kydd, Parsons Brinckerhoff
PDF
2012 02 The State of the Severn Report Dr. Rhoda Ballinger, Cardiff University
PPT
004 Future Coastal Flood and Erosion Risk Management Schemes at Southsea and ...
PDF
2011 08 Proposed Nuclear Power Development: Hinkley Point C, An Update – Nige...
2012 06 Bristol Channel Strategic Coastal Group – Shoreline and Flood Risk Ma...
Appendix e issues and features final_dec2010
2006 06 Severn Barrage: Is the Tide Turning? - David Kerr, Sir Robert McAlpine
Appendix i part a sea_final_dec2010
2009 06 Department of Energy and Climate Change - Juliet Austin
2009 05 Wider Severn Estuary - Hance Smith
Appendix b stakeholder engagement and consultation final_dec2010
2008 03 Tidal Power: The Options Peter Kydd, Parsons Brinckerhoff
2012 02 The State of the Severn Report Dr. Rhoda Ballinger, Cardiff University
004 Future Coastal Flood and Erosion Risk Management Schemes at Southsea and ...
2011 08 Proposed Nuclear Power Development: Hinkley Point C, An Update – Nige...

Recently uploaded (20)

PPTX
FIRE SAFETY SEMINAR SAMPLE FOR EVERYONE.pptx
DOCX
Epoxy Coated Steel Bolted Tanks for Crude Oil Large-Scale Raw Oil Containment...
PDF
Earthquake, learn from the past and do it now.pdf
PPTX
NSTP1 NSTP1NSTP1NSTP1NSTP1NSTP1NSTP1NSTP
PDF
FMM Slides For OSH Management Requirement
DOCX
Epoxy Coated Steel Bolted Tanks for Agricultural Waste Biogas Digesters Turns...
PPTX
Importance of good air quality and different pollutants.
PDF
Weather-Patterns-Analysis-and-Prediction.pdf
PPTX
Plant_Cell_Presentation.pptx.com learning purpose
DOCX
Epoxy Coated Steel Bolted Tanks for Dairy Farm Water Ensures Clean Water for ...
PPTX
Green Modern Sustainable Living Nature Presentation_20250226_230231_0000.pptx
PPT
Environmental pollution for educational study
PDF
Insitu conservation seminar , national park ,enthobotanical significance
PPTX
ser tico.pptxXYDTRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRY
PPTX
structure and components of Environment.pptx
PPTX
Envrironmental Ethics: issues and possible solution
PPTX
Conformity-and-Deviance module 7 ucsp grade 12
PPTX
Arugula. Crop used for medical plant in kurdistant
DOCX
Double Membrane Roofs for Biogas Tanks Securely store produced biogas.docx
DOCX
Epoxy Coated Steel Bolted Tanks for Leachate Storage Securely Contain Landfil...
FIRE SAFETY SEMINAR SAMPLE FOR EVERYONE.pptx
Epoxy Coated Steel Bolted Tanks for Crude Oil Large-Scale Raw Oil Containment...
Earthquake, learn from the past and do it now.pdf
NSTP1 NSTP1NSTP1NSTP1NSTP1NSTP1NSTP1NSTP
FMM Slides For OSH Management Requirement
Epoxy Coated Steel Bolted Tanks for Agricultural Waste Biogas Digesters Turns...
Importance of good air quality and different pollutants.
Weather-Patterns-Analysis-and-Prediction.pdf
Plant_Cell_Presentation.pptx.com learning purpose
Epoxy Coated Steel Bolted Tanks for Dairy Farm Water Ensures Clean Water for ...
Green Modern Sustainable Living Nature Presentation_20250226_230231_0000.pptx
Environmental pollution for educational study
Insitu conservation seminar , national park ,enthobotanical significance
ser tico.pptxXYDTRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRY
structure and components of Environment.pptx
Envrironmental Ethics: issues and possible solution
Conformity-and-Deviance module 7 ucsp grade 12
Arugula. Crop used for medical plant in kurdistant
Double Membrane Roofs for Biogas Tanks Securely store produced biogas.docx
Epoxy Coated Steel Bolted Tanks for Leachate Storage Securely Contain Landfil...

Smp2 part b policy statements cardiff only_final

  • 1. Severn Estuary SMP2 – Part B - Policy Statements CARDIFF This Theme area contains the Policy Units CAR 1, CAR2 and CAR 3. It starts at Penarth Head on the west shoreline of the Severn Estuary, in the Vale of Glamorgan, Wales and end at Lamby Way Landfill Site drain/outfall. The Key Policy Drivers in this area are: • International nature conservation sites – Severn Estuary SAC, SPA and Ramsar; • Critical infrastructure – railway line, electricity substations, docks; • Residential developments – Cardiff; • Industrial and commercial developments – Cardiff Bay, docks; • All Wales Coastal Path routes.
  • 2. Severn Estuary SMP2 – Part B - Policy Statements
  • 3. Severn Estuary SMP2 – Part B - Policy Statements Policy Unit: CAR 1 – Cardiff Bay Barrage
  • 4. Severn Estuary SMP2 – Part B - Policy Statements Preferred Policies to Implement the Plan: Epoch Preferred Policy Comments 0 to 20 years (2025) HTL The short term policy for this unit is Hold The Line The Cardiff Bay Barrage would remain in place with some maintenance. HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. 20 to 50 years (2055) HTL The medium term policy for this unit is Hold The Line The Cardiff Bay Barrage would remain in place with some maintenance. HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. 50 to 100 years (2105) HTL The long term policy for this unit is Hold The Line The Cardiff Bay Barrage would remain in place with some maintenance. HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. Economics Policy Unit Existing SMP1 Policy Time Period (epoch) SMP2 Assessment 0- 20 20- 50 50- 100 Preferred Plan Present Value Damages Preferred Plan Present Value Defence Costs CAR 1 HTL HTL HTL HTL £568m (CAR1-3, WEN1-2 total) £24m (CAR1-3, WEN1-2 total) The preferred policy is economically viable. There are no cost estimates available for the maintenance or replacement of a structure like the Cardiff Bay Barrage. Standard ‘hard defences’ costs have been used for the Cardiff Bay Barrage (see Part A Section 3.6). It should be noted that this underestimates The preferred policy is economically viable for the linked Policy Units of CAR 1, CAR 2, CAR 3, WEN 1, and WEN 2. The costs and damages of the preferred policy in the table above relate to actions taken in all linked policy units. the costs of maintaining the Cardiff Bay Barrage. An increase in costs would not alter the policy option.
  • 5. Severn Estuary SMP2 – Part B - Policy Statements The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein. Severn Estuary SMP2 Review – Final Report 5 Predicted Implication of the Preferred Plan for the CAR 1 Policy Unit Time Period Management Activities Property, Land Use and Human Health Nature Conservation – including Earth Heritage, Geology and Biodiversity Landscape Character and Visual Amenity Historic Environment Amenity and Recreational Use 0 – 20 years The Cardiff Bay Barrage is expected to remain in place and functional with minimal maintenance. Defences will manage the risk of flooding on existing property, land use or human health. Maintaining the Cardiff Bay Barrage, the harbour and navigable channels will also be maintained. A HTL policy will not impact the nature conservation sites during this time period. Works should take account of possible environmental impacts and the need for an EIA. Maintaining existing defences will not impact on existing landscape and visual amenity. Defences will manage the risk of flooding on the historic environment. Defences will manage the risk of flooding on n the amenity value of the land or recreational use. 20 – 50 years The Cardiff Bay Barrage is expected to remain in place and functional with minimal maintenance. Defences will manage the risk of flooding on existing property, land use or human health. Maintaining the Cardiff Bay Barrage, the harbour and navigable channels will also be maintained. Some coastal squeeze will occur which will result in loss of intertidal habitats within N2K sites and SSSI. Works should take account of possible environmental impacts and the need for an EIA. Maintaining existing defences will not impact on existing landscape and visual amenity. Defences will manage the risk of flooding on the historic environment. Defences will manage the risk of flooding on the amenity value of the land or recreational use. 50 – 100 years The Cardiff Bay Barrage is expected to remain in place and functional with minimal maintenance. Defences will manage the risk of flooding on existing property, land use or human health. Maintaining the Cardiff Bay Barrage, the harbour and navigable channels will also be maintained. Some coastal squeeze will occur which will result in loss of intertidal habitats within N2K sites and SSSI. Works should take account of possible environmental impacts and the need for an EIA. Maintaining existing defences will not impact on existing landscape and visual amenity. Defences will manage the risk of flooding on the historic environment. Defences will manage the risk of flooding on the amenity value of the land or recreational use.
  • 6. Severn Estuary SMP2 – Part B - Policy Statements The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein. Severn Estuary SMP2 Review – Final Report 6 Policy Unit: CAR 2 – Western end of Cardiff Bay Barrage to mouth of River Rhymney at Rover Way
  • 7. Severn Estuary SMP2 – Part B - Policy Statements The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein. Severn Estuary SMP2 Review – Final Report 7 Preferred Policies to Implement the Plan: Epoch Preferred Policy Comments 0 to 20 years (2025) HTL The short term policy for this unit is Hold The Line The earth embankments will require repair and maintenance during this epoch. Some sections may need to be replaced. HTL manages the risk of impacts from flooding and erosion to industrial and residential areas of Cardiff. It is part of 5 linked Policy Units (CAR 1, CAR 2, CAR 3, WEN 1 and WEN 2). Actions should take account of potential impacts in all linked areas. HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. 20 to 50 years (2055) HTL The medium term policy for this unit is Hold The Line The existing defences will come to the end of their serviceable life in this epoch. HTL recommends that defences are replaced. HTL manages the risk of impacts from flooding and erosion to industrial and residential areas of Cardiff. It is part of 5 linked Policy Units (CAR 1, CAR 2, CAR 3, WEN 1 and WEN 2). Actions should take account of potential impacts in all linked areas. HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. 50 to 100 years (2105) HTL The long term policy for this unit is Hold The Line HTL manages the risk of impacts from flooding and erosion to industrial and residential areas of Cardiff. It is part of 5 linked Policy Units (CAR 1, CAR 2, CAR 3, WEN 1 and WEN 2). Actions should take account of potential impacts in all linked areas. HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. Economics Policy Unit Existing SMP1 Policy Time Period (epoch) SMP2 Assessment 0- 20 20- 50 50- 100 Preferred Plan Present Value Damages Preferred Plan Present Value Defence Costs CAR 2 HTL HTL HTL HTL £568m (CAR1-3, WEN1-2 total) £24m (CAR1-3, WEN1-2 total) The preferred policy for this unit is economically viable. The preferred policy is economically viable for the linked Policy Units of CAR 1, CAR 2, CAR 3, WEN 1 and WEN 2. The costs and damages of the preferred policy in the table above relate to actions taken in all linked policy units.
  • 8. Severn Estuary SMP2 – Part B - Policy Statements The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein. Severn Estuary SMP2 Review – Final Report 8 Predicted Implication of the Preferred Plan for the CAR 2 Policy Unit Time Period Management Activities Property, Land Use and Human Health Nature Conservation – including Earth Heritage, Geology and Biodiversity Landscape Character and Visual Amenity Historic Environment Amenity and Recreational Use 0 – 20 years The shoreline will remain stable. Earth embankments will require maintenance. Flood risk is limited in this period. Defences will manage the risk of flooding on existing property, land use or human health. An HTL policy will not impact the nature conservation sites during this time period. Works should take account of possible environmental impacts and the need for an EIA. Defences will manage the risk of flooding on existing landscape and visual amenity Defences will manage the risk of flooding on the historic environment Defences will manage the risk of flooding on the amenity value of the land or recreational use. 20 – 50 years The shoreline will remain stable. Defences will need to be replaced in this period. The majority of this unit benefits from high ground. Defences will manage the risk of flooding on existing property, land use or human health. Coastal squeeze will occur which will result in loss of intertidal habitats affecting Severn N2K and SSSI. Works should take account of possible environmental impacts and the need for an EIA. Defences will manage the risk of flooding on existing landscape and visual amenity Defences will manage the risk of flooding on the historic environment Defences will manage the risk of flooding on the amenity value of the land or recreational use. 50 – 100 years The shoreline will remain stable. Defences should be monitored and maintained. Defences will manage the risk of flooding on existing property, land use or human health. Coastal squeeze will occur which will result in loss of intertidal habitats affecting Severn N2K and SSSI. Works should take account of possible environmental impacts and the need for an EIA. Defences will manage the risk of flooding on existing landscape and visual amenity Defences will manage the risk of flooding on the historic environment Defences will manage the risk of flooding on the amenity value of the land or recreational use.
  • 9. Severn Estuary SMP2 – Part B - Policy Statements The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein. Severn Estuary SMP2 Review – Final Report 9 Policy Unit: CAR 3 – Both banks of the River Rhymney from the mouth at Rover Way to the Lamby Way landfill site drain
  • 10. Severn Estuary SMP2 – Part B - Policy Statements The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein. Severn Estuary SMP2 Review – Final Report 10 Preferred Policies to Implement the Plan: Epoch Preferred Policy Comments 0 to 20 years (2025) HTL The short term policy for this unit is Hold The Line HTL manages the risk of flooding and erosion impacts to industrial and residential areas of Cardiff, including transport links and Lamby Way landfill site. Flooding at the landfill site could be harmful to water quality. Flood risk is localised. High ground limits flood risk in some areas. HTL would require defence structures in only some areas. Actions should take account of potential impacts in linked Policy Units (CAR 1, CAR 2, WEN 1 and WEN 2). HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. 20 to 50 years (2055) HTL The medium term policy for this unit is Hold The Line HTL manages the risk of flooding and erosion impacts to industrial and residential areas of Cardiff, including transport links and Lamby Way landfill site. Flooding at the landfill site area could be detrimental to the water quality. Flood risk is localised - HTL would only require defence structures in some places. In other areas, high ground limits the risk. Actions should take account of potential impacts in linked Policy Units (CAR 1, CAR 2, WEN 1 and WEN 2). HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. 50 to 100 years (2105) HTL The long term policy for this unit is Hold The Line HTL manages the risk of flooding and erosion impacts to industrial and residential areas of Cardiff, including transport links and Lamby Way landfill site. Flooding at the landfill site area would be detrimental to the water quality. Flood risk is localised - HTL would only require defence structures in some places. In other areas, high ground limits the risk. Actions should take account of potential impacts in linked Policy Units (CAR 1, CAR 2, WEN 1 and WEN 2). HTL does not guarantee funding to build or maintain current or future defences or to counter sea level rise. Economics Policy Unit Existing SMP1 Policy Time Period (epoch) SMP2 Assessment 0- 20 20- 50 50- 100 Preferred Plan Present Value Damages Preferred Plan Present Value Defence Costs CAR 3 HTL HTL HTL HTL £568m (CAR1-3, WEN1-2 total) £24m (CAR1-3, WEN1-2 total) The preferred policy is economically viable for the linked Policy Units of CAR 1, CAR 2, CAR 3, WEN 1 and WEN 2. The costs and damages of the preferred policy in the table above relate to actions taken in all linked policy units.
  • 11. Severn Estuary SMP2 – Part B - Policy Statements The above provides the local details in respect of the SMP-wide policy presented in the preceding sections of this Plan document. These details must be read in the context of the wider-scales issues and policy implications, as reported therein. Severn Estuary SMP2 Review – Final Report 11 Predicted Implication of the Preferred Plan for the CAR 3 Policy Unit Time Period Management Activities Property, Land Use and Human Health Nature Conservation – including Earth Heritage, Geology and Biodiversity Landscape Character and Visual Amenity Historic Environment Amenity and Recreational Use 0 – 20 years The shoreline will remain stable and flood risk is limited in this period, and as a result management activities will be limited. Defences will manage the risk of flooding on existing property, land use or human health. An HTL policy will not impact the nature conservation sites during this time period. Works should take account of possible environmental impacts and the need for an EIA. Limited erosion and flood risk will not impact on existing landscape and visual amenity Defences will manage the risk of flooding on the historic environment. Defences will manage the risk of flooding on the amenity value of the land or recreational use. 20 – 50 years The shoreline will remain stable. The defences will need to be replaced in this epoch. High ground in most of this policy unit limits flood risk. Defences will manage the risk of flooding on existing property, land use or human health. Coastal squeeze will occur which will result in loss of intertidal habitats affecting Severn N2K and SSSIs in the area. Works should take account of possible environmental impacts and the need for an EIA. Limited erosion and flood risk will not impact on existing landscape and visual amenity Defences will manage the risk of flooding on the historic environment. Defences will manage the risk of flooding on the amenity value of the land or recreational use. 50 – 100 years The shoreline will remain stable. Defences should be maintained in the long term. Defences will manage the risk of flooding on existing property, land use or human health. Coastal squeeze will occur which will result in loss of intertidal habitats affecting Severn N2K and SSSIs in the area. Works should take account of possible environmental impacts and the need for an EIA. Limited erosion and flood risk will not impact on existing landscape and visual amenity Defences will manage the risk of flooding on the historic environment. Defences will manage the risk of flooding on the amenity value of the land or recreational use.