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Water SensitiveUrban DesignDeveloping our approach in WalesAaron BurtonMarch 2012
Outline Drivers in Wales Pilots/ case studies The future
Housing challenge Additional 200,000new homes by 2025 Additional 30,000new homes inCardiff by 2025 80% of existing homes remain by 2050
DCWWWater ResourcesDeficit zones: SEWCUS: -12 to -104 Ml/d Pembrokeshire: -13 to -19 Ml/d Brecon: -1 Ml/d NEYM: +2.9 to -5 Ml/d (context – Cardiff daily household use is around 50 Ml/d)
Water and carbon connection 5% UK annual carbon 1% UK annual carbon Emissions emissions (~3% in Wales)
Flooding – Surface water Majority of surface water problem locations are in SE Wales
Scott (2011) Surface water management in a changing legislative framework, Presented at ICE Wales Flooding conferencehttp://www.ice.org.uk/getattachment/20b63757-2855-43c2-98e0-8ca42da77696/Wales-Flooding-Conference-2011-Dominic-Scott.aspx
NEF - Ecosystem servicesEcosystem Service Green roofs/ Street trees Wetlands Rainwater Water and Rain walls harvesting energy gardens/ efficiency bioretentionReduce flood risk Offset urban heat islandReduce energy demandReduce noise/ air pollutionSupport biodiversity Recreation/ leisure Reduce water use Reduce wastewater flowsReduced CO2 Reduced water and energy bills Adapted from GLA (2011) Managing risks and increasing resilience – The Mayor’s Climate Change Adaptation Strategy, p. 90, http://www.london.gov.uk/sites/default/files/Adaptation-oct11.pdf (Accessed 05/11/12)
Welsh Housing Quality Standard 16% of households in Wales SAP rating for energy (space and water heating) Responsible for “environment” and landscapes EAW & EST Guidance to support WHQS (based on pilot study & survey) WC partnerships Refurbishment Voids and maintenance WSUD Guidance and Pilot Studies
Community based schemes Reeds used to cut pollution in Llanfyllins River Cain
140Total emissions - water, sewerage, surface water, SuDS, 120 100 RWH embodied(tCo2e) 80 60 40 20 0 Baseline RWH with RWH with RWH with RWH with SuDS only SuDS + SuDS + SuDS + 300l SuDS + 100l Traditional traditional traditional traditional 1500l RWH 1500l RWH RWH RWH Solution solution solution solution new tech (new tech) Option NO14 (464 props) BY21 (278 Props) BP04 (1 school + 10 props) Broader costs and benefits? Maintenance, adoption, uptake rates etc…
Water Sensitive Communities Value of Water and behaviour change 140 25 120 20 Carbon Saving kgCO2/yr 100 Water saving (m3/yr) 15 80 60 10 40 5 20 0 0 All In-home Mail, events, Mail, events, Mail, events, telephone (1) telephone (2) telephone (3) Advice method Average saving per customer (CO2 heating + embodied) Kg CO2/yr Average water saving (m3/yr)
WSUD Programme Board To guide decision WR making and resource Planning WFD input as we develop our approach to Water WQ Land Man Sensitive Urban Design WSUD in Wales. Air Quality Groundwater Climate Biodiversity Change FRCM
Pilots: Bryheulog Academic: Industry: Cardiff tbc Retrofit2050 CIRIA Scoping Study Caerau & Brynglas PREPARED SuDS Wales Groups CCW - NERTSB Future Cities IWA Future Cities Wetland Mapping HA Water Pilot Living Wise Cardiff Policy: Programmes: FUTURE: SPPSoW Periodic Review •WSUD Guidance Housing Bill WRMP •Pilot technology Planning Bill DCWW SWEAR •Sector wideBuilding Regulations DCWW SDPs learning programmes WHQS EAW CFMPs (LZCH?) SuDS Guidance LA SWMPs •Community 1st /SABs Diffuse Pollution AP •EU Life+ Overview of activities in Wales Feb 2012