SuDS Guidance for Ireland irishsuds.com

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Are SuDS the Answer for Drainage? IEMA

• SuDS Guidance for Ireland irishsuds.com

12 December 2007
Don McEntee Chartered Engineer Dublin City
Council
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Greater Dublin Strategic Drainage Study
(GDSDS)SuDS Guidance for Ireland

• HR Wallingford have prepared guidance document
  for Dublin City Council
• Released on website on 1ST December 2007
• Covers whole of Ireland
• Available free of charge on web at irishsuds.ie

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Promoting SuDS in Ireland

• The web site is to promote and facilitate the use
  of SuDS
• Tools for Developers and Planners
• Guidance on SuDS
• References for more information
• Provide a common view for all stakeholders

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www.irishsuds.com

• Objective
• Ensure GDSDS policy is applied
• Provide site specific and general guidance on
  SuDS
• Provide quick (no cost) information on rough
  storage volumes needed
• Provide basis for initial planning discussions on
  drainage
• Provide links to other SuDS references

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SuDS Guidance for GDSDS Policy

• Implement GDSDS criteria
• Greenfield runoff prediction
• River water quality protection
• River regime protection
• River flood protection
• Level of Service against flooding
• Interception storage
• Treatment storage
• Long term storage

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SuDS Guidance for GDSDS Policy

• Guidance on high density small in-fill
  development sites
• Guidance on greenfield development sites drained
  to the local stream
• Guidance on greenfield development sites drained
  to an estuary or the coast
• guidance on developments with clay soils, high
  groundwater or contaminated land

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Greater Dublin Strategic Drainage Study
(GDSDS)

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Guidance
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Specific Site Guidance

• Simple short report (with unique ref.
  identifier) advising on appropriate SuDS for a
  site, based on
• Soil type
• Type of development
• Size
• Contaminated land
• Scarce water resources
• Groundwater depth
• Drainage ownership
• Greenfield / Brownfield
• Aquifer vulnerability

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Report SuDS Advice for
Development Site

• Short introduction
• SuDS use on the site
• Which SuDS to use and why
• Which SuDS NOT to use and why

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SuDS General Guidance

• SuDS description leaflets
• All types of SuDS
• Summary guidance of key aspects of all SuDS
  components

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SuDS Information Sheets
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Storage for Treatment and Attenuation

• Tool based on correlation of simple InfoWorks CS
  models to estimate storage on sites
• Based on
• M5 60
• R
• SAAR
• PIMP (percentage impervious area)
• Assumes 100 runoff from paved and 0 for
  pervious areas
• For initial cost estimates and outline design

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