Does retrofitting stormwater green infrastructure …...Does retrofitting stormwater green...
Transcript of Does retrofitting stormwater green infrastructure …...Does retrofitting stormwater green...
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Does retrofitting stormwater green infrastructure support urban regeneration for communities?
Informing the developing masterplan for the Weston-super-Mare regeneration project
Presented by Paul A. Hargreaves (CH2M)
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Does retrofitting stormwater green infrastructure support urban regeneration for communities?
Today’s presentation will cover;
1. Introduction
2. Aims of the study
3. What are the options for retrofit SuDS in Weston-super-Mare?
4. Visualisations - What could the SuDS look like?
5. Lessons learnt
Photo: The Station Gateway site from Hildesheim Bridge (A370)
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Introduction – SuDS the broader benefits?
• England is one of the most densely populated countries in Europe
• With a population density of 413 people / km2
• Atmospheric pollution is increasing which will have a detrimental effect on the populous in urban areas
• Green infrastructure can reduce such pollutants
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Introduction – SuDS the broader benefits?
• 40% of the world’s population currently lives in water stressed areas
• In the UK households and industry are the major users of fresh water
• If rainwater harvesting is retrofitted, the over-reliance on treated water for certain uses could be reduced
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Introduction – A bit of background on Weston-super-Mare….
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Introduction – Existing flood risk?
Source: https://flood-map-for-planning.service.gov.uk/summary/331859/161596
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Introduction – Existing flood risk?
Source: https://flood-warning-information.service.gov.uk/long-term-flood-risk/map?easting=332053&northing=161131&address=24009991&map=SurfaceWater
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Introduction – The development areas
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Aims of the study
To support the developing regeneration plans for Weston-super-Mare town centre by;
• Determining the opportunities and constraints for each location
• Identifying the opportunities for retrofit SuDS within the area of Weston-super-Mare town centre regeneration,
• Demonstrating that retrofit SuDS could reduce surface water runoff rates by 30%
• Providing supporting information to convince the community and project partners of the benefits
• The SuDS should contribute towards making the development sites ‘high quality’
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What are the options for retrofit SuDS in Weston-super-Mare
• Green roofs
• Green walls
• Rainwater harvesting
• Permeable paving
• Bio-retention
• Swales
• Basins
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Visualisations – The plan for Walliscote Place….
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Visualisations – Walliscote Place from Oxford Street
Bio-retention
Green roofs
Green wall
Bio-retention
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Visualisations – Walliscote Place from Station RoadBio-retention
Green wall
Bio-retention
Green roof
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Lessons learnt and the next steps
• Visualisations are an essential tool
• Inclusion of retrofit SuDS in a supplementary planning document is critical to ensure delivery
• Publicise the outputs from such studies to provide inspiration for those designing the public realm and development sites
• Changing attitudes towards the design of SuDS can be a real barrier (lack of experience and the perceived additional time to design)
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Thank You
Visit stand B49…- Speak to me about my presentation- Find out more about CH2M- Play our interactive flood manager game and win…- Enjoy complimentary fresh fruit