Transcript Craigmillar Regeneration

26th Standing Conference on
Stormwater Control, Dunfermline
September 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
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.
The SUDS Philosophy
“Drainage techniques for urban development which do not
adversely affect the aquatic environment”
QUALITY
QUANTITY
SUDS
AMENITY
AND
WILDLIFE
Water Quality - River Pollutant
Sources (UK)
Others
6%
Agriculture
12%
Industrial
Waste
10%
Wastewater
34%
Urban
Drainage
38%
Surface Water Management Train
Treatment Level
Prevention
Source
Control
Site Controls
Regional
Controls
Watercourse
Technique
Good Housekeeping,
Management and Re-use
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
Source Control
Site Control
Regional
Control
SuDS/River
Linkage
River
Restoration
‘Sustainable Urban Drainage is
more than just a set of design
tools.
- It requires a change in design
philosophy and attitude’
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
Dunfermline Eastern Expansion (DEX)
• 900 acres Residential and
Commercial Development,
• Features - Ponds,
wetlands, swales, filter
drains, detention basins,
source control.
Working Together - The ‘DEX Team’
Local
Community
Fife Council
Landscape
Architect
Environmental,
Roads
Fife Council
Planners
SEPA
Frederick
Snow
Advisors
Wilcon
Homes
Meedhurst
Project
Managers
Scottish
Water
Fairhurst
(Civils Designer,
SuDS, Ecology,
Hydrology)
Contractors
Ironside Farrar
Scottish
Enterprise
The DEX Process
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
Strategic Surface Water Drainage Plan
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
Dunfermline Expansion Area
Swales
Retention
Pond
Basin
Outlet
Duloch Park, Dunfermline
Duloch Park, Dunfermline
Retention Pond
Duloch Park, Dunfermline
Pond
Cascades
Tesco Store Permeable
surfaces
Pond
Swales and
filter drains
Extended Detention Basin
Wetlands
Retention Pond and River Restoration
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.
Key to Success
• Strategic View.
• Early Liaison and Stakeholder
Workshops.
• Commitment and vision
• Collaborative Approach
• Measurable cost and
environmental benefits.
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
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?
Guidance Documents
Development of Design Guidance
•
•
•
•
Maintenance Framework Agreement
Research e.g. CIRIA, Abertay
New UK Design Guidance 2005?
Impact of Scottish Water ‘SuDS for Scotland’?
Other SuDS Features Residential Swales
Roadside Swales
Permeable Surfaces and Below Ground Storage
Bioretention - ‘Rain Gardens ’
Benchmark Projects
• Notable major strategic projects:
South East Wedge
Dunfermline Eastern Expansion
Heartlands Development,
Polkemmet
Dundee Western Gateway
Craigmillar Urban Regeneration
Craigmillar and the South East
Wedge
• Surface Water Management
Plan
• Holistic Approach
• Focus on Environmental
Enhancement and Social
Integration
• Promoting Sustainable
Development
Craigmillar Regeneration
‘Green Corridors’
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
“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