26th Standing Conference on Stormwater Control, Dunfermline September 2004

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26th Standing Conference on Stormwater Control,
DunfermlineSeptember 2004

• Working Together - Implementing the DEX Drainage
  Master Plan
• Craig W Berry, W A Fairhurst Partners
• Neil Campbell, Sir Frederick Snow Partners
• Hugh Ross, Ironside Farrar
• Rab Hutton, Fife Council

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Aim of this Presentation

• Raise awareness of SuDS
• Describe the implementation process used at DEX
• Highlight key achievements.
• Present experience and lessons from other
  projects since DEX.

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The SUDS Philosophy

• Drainage techniques for urban development which
  do not adversely affect the aquatic environment

AMENITY AND WILDLIFE
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Water Quality - River Pollutant Sources (UK)
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Surface Water Management Train
Technique
Treatment Level

• Good Housekeeping,
• Management and Re-use

Prevention Source Control Site
Controls Regional Controls Watercourse

• Soakaway / Infiltration
• Swales
• Filter drains / Filter strips
• Porous/permeable surface
• Water butts
• Bio-retention areas

• Storage/attenuation
• Detention Basins
• Extended Detention
• Infiltration Basins

• End-of Pipe Treatment
• Retention Ponds
• Wetlands
• Reedbeds

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Source Control
Site Control
Regional Control
SuDS/River Linkage
River Restoration
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• Sustainable Urban Drainage is more than just a
  set of design tools.
• - It requires a change in design philosophy and
  attitude

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Why SuDS at DEX?

• Local flooding and water quality issues
• Demand for residential and industrial growth.
• Conventional Drainage Solutions unsustainable and
  uneconomic
• Opportunities for cost effective design, and
  environmental gains
• SEPA and Planning initiatives
• Developers commitment to innovative solutions

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Dunfermline Eastern Expansion (DEX)

• 900 acres Residential and Commercial Development,
  
• Features - Ponds, wetlands, swales, filter
  drains, detention basins, source control.

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Working Together - The DEX Team
Local Community
Fife Council Environmental, Roads
Landscape Architect
Wilcon Homes
Fife Council Planners
Fairhurst (Civils Designer, SuDS, Ecology,
Hydrology)
Meedhurst Project Managers
Frederick Snow Advisors
SEPA
Scottish Water
Contractors
Ironside Farrar
Scottish Enterprise
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The DEX Process
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Key Elements

• Design criteria review process
• Establishing a collaborative environment
• Identifying and acknowledging gaps in knowledge
• Challenging untried innovative solutions
• Learning from experience elsewhere (USA, Sweden)
• Developers commitment
• Workshops

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Strategic Surface Water Drainage Plan
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DEX SuDS Strategy

• Limit discharge rates from development areas (2
  year post development run-off)
• Promoting source control
• Provide regional biological treatment
  (ponds/wetlands)
• Promote habitat enhancement and local amenity
  value

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Dunfermline Expansion Area
Swales
Retention Pond
Basin
Outlet
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Duloch Park, Dunfermline
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Duloch Park, Dunfermline
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Retention Pond
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Duloch Park, Dunfermline
Pond Cascades
Tesco Store - Permeable surfaces
Swales and filter drains
Pond
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Extended Detention Basin
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Wetlands
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Retention Pond and River Restoration
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Achievements

• Establishment of criteria for sizing treatment
  facilities
• Unconventional drainage systems accepted.
• Adoption maintenance framework established.
• Design standards established.
• Environmental enhancement.
• Public acceptance.
• Monitoring education programmes implemented.

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Key to Success

• Strategic View.
• Early Liaison and Stakeholder Workshops.
• Commitment and vision
• Collaborative Approach
• Measurable cost and environmental benefits.

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Problems Barriers

• Lack of integration between landscape strategy
  and SuDS features
• Maintenance issues
• Preconceptions of SuDS - (just soakaways!)
• SuDS are expensive
• Public acceptance and safety concerns
• Inappropriate and Inconsistent application

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Key Initiatives and Drivers

• Scottish Planning Policy 7 Planning and Flooding
  (SPP7)
• SEPA Policy 15 41 SuDS Flooding
• PAN 61 SuDS
• Water Framework Directive - Future Impacts?
• Water Environment and Water Services Act 2003
• Controlled Activities Regulations 2005?

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Guidance Documents
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Development of Design Guidance

• Maintenance Framework Agreement
• Research e.g. CIRIA, Abertay
• New UK Design Guidance 2005?
• Impact of Scottish Water SuDS for Scotland?

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Other SuDS Features - Residential Swales
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Roadside Swales
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Permeable Surfaces and Below Ground Storage
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Bioretention - Rain Gardens
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Benchmark Projects

• Notable major strategic projects
• South East Wedge
• Dunfermline Eastern Expansion
• Heartlands Development, Polkemmet
• Dundee Western Gateway
• Craigmillar Urban Regeneration

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Craigmillar and the South East Wedge

• Surface Water Management Plan
• Holistic Approach
• Focus on Environmental Enhancement and Social
  Integration
• Promoting Sustainable Development

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Craigmillar Regeneration
Braid Burn
Niddrie Burn
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Braid Burn
Niddrie Burn
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Green Corridors
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(No Transcript)
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Sustainable Urban Drainage - Five points to
success

• Holistic and integrated approach
• Minimise contamination and flooding
• Add value to the community
• Stakeholder awareness and involvement
• Early consideration to SuDS

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The kind of thinking that has got us into this
situation is not the kind that will get us out of
it. - Albert Einstein
the Alternative Approach