SuDS Using CIRIAs BeST July 2015 Elvetham Heath Hampshire 1 Assessing benefits why should we Elvetham Heath Hampshire 2 Should we value benefits Difficult to Identify amp link benefits to quantifiable outcomes ID: 1020648
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1. Evaluating the benefits of SuDSUsing CIRIA’s BeST July 2015Elvetham Heath, Hampshire1
2. Assessing benefits – why should we? Elvetham Heath, Hampshire2
3. Should we value benefits?Difficult toIdentify & link benefits to quantifiable outcomesValue quantified benefits (reliance on transfers)Aggregate (benefits, populations, time)UncertaintyTakes time and resourcesMoral concerns3If we don’t, they are zero
4. We have challenges now and in the futureFlooding – people and propertyLegislation and planningWater quality of urban watercoursesConnecting with water (on the surface)Liveability – quality of lifeSupport growth – population & economy4
5. What is possible? How do we account for the benefits and should we? Provide amenity and recreationImprove water qualityLimit flows entering systemUse as a resourceImprove health and wellbeingProvide educationIncrease property valueHelp manage air qualityImprove thermal comfortMaximise network capacityEnhance quality of urban spaceEnhance biodiversity5
6. How do we change?Sustainable Drainage Systems manages impacts from development on the quantity and quality of runoff, provides amenity and biodiversity as well as other potential benefits.6
7. Stormwater management approaches to cope with different size storms in different ways can create a range of benefits7
8. Evaluating the benefits unlocks the potential for…Fairer comparisonsBetter decision makingMeeting funding requirementsEnabling conversationsDelivering SuDS8
9. Some tools exist but…..9
10. Overall aim of BeST“The overall aim of this proposal is to collate and evaluate potential methodologies for assessing the benefits of SuDS, develop approaches accepted by relevant stakeholders and using available data develop a tool to estimate the multiple benefits of SuDS”.
11. Thanks to our funders11
12. Introducing: W045 BeST Elvetham Heath, Hampshire12
13. BeST: Benefits of SuDS ToolCollation of evidence (values)Structured assessment approach Considers confidenceSupport practitioners to qualify and quantify (monetise) benefitsCompare drainage optionsProvision of detailed audit trail13
14. Wide range of benefitsEnvironmentalSupportingProvisioningCulturalBenefit categoryMonetised?Air qualityAmenityBiodiversity and ecologyBuilding temperatureCarbon reduction & sequestrationCrimeEconomic growth EducationEnabling developmentFlexible infrastructuretbcFloodingGroundwater rechargeHealthPumping wastewaterRainwater harvestingRecreationTourismTraffic calmingTreating wastewaterWater quality14Triple bottom lineEcosystem Services
15. BeST has a suite of outputs15
16. Using BeST – applying itHOMEDouble counting check Work sheets to fill inFor informationPotential stakeholdersProject inputsScreening questionsFill in & for informationValues librarySuDS UsedBenefits / impactsSummary of outputsSummary Results ESSComparison toolYearly Values library16
17. Using BeST– applying it17HOMEDouble counting check Work sheets to fill inFor informationPotential stakeholdersProject inputsScreening questionsFill in & for informationValues librarySuDS UsedBenefits / impactsSummary of outputsSummary Results ESSComparison toolYearly Values library
18. Using BeST– applying it18HOMEDouble counting check Work sheets to fill inFor informationPotential stakeholdersProject inputsScreening questionsFill in & for informationValues librarySuDS UsedBenefits / impactsSummary of outputsSummary Results ESSComparison toolYearly Values library
19. Using BeST – applying it19HOMEDouble counting check Work sheets to fill inFor informationPotential stakeholdersProject inputsScreening questionsFill in & for informationValues librarySuDS UsedBenefits / impactsSummary of outputsSummary Results ESSComparison toolYearly Values library
20. Examples using W045 BeST Elvetham Heath, Hampshire20
21. Applying BeST – Retrofit Case Study
22. Applying BeST – Retrofit Case Study22
23. Applying BeST – Retrofit Case Study23
24. Applying BeST – Glasgow SWMP24
25. Applying BeST – Glasgow SWMP25
26. Applying the results£ does not equal a £ - its an indication Help identify the wider benefits Demonstrate the potential level of benefitsUnderstand who might benefit Support conversations, look at wider funding opportunitiesUnderstand benefits to investigate further26
27. Thank youWant to know more?http://www.susdrain.org/resources/best.htmlbest@susdrain.orgStudio Engleback, Curtins Consulting & Kevin McCloud 27