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Sustainable Integrated Planning: Case Study: NORSGA, Waitakere City, Auckland

Sustainable Integrated Planning: Case Study: NORSGA, Waitakere City, Auckland. Presented By Helen Shaw, URS New Zealand. Integrated planning?. Or a Stand Off?. NORSGA = Northern Strategic Growth Area. Currently Rural land use Location for potential expansion of Waitakere City. Objectives.

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Sustainable Integrated Planning: Case Study: NORSGA, Waitakere City, Auckland

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  1. Sustainable Integrated Planning: Case Study: NORSGA, Waitakere City, Auckland Presented By Helen Shaw, URS New Zealand Employee Presentation 3-00 - p 1

  2. Integrated planning? Employee Presentation 3-00 - p 2

  3. Or a Stand Off? Employee Presentation 3-00 - p 3

  4. NORSGA = Northern Strategic Growth Area • Currently Rural land use • Location for potential expansion of Waitakere City Employee Presentation 3-00 - p 4

  5. Objectives • Sustainable Water Management • Economically, Socially, Culturally and Environmentally appropriate • Integrated Planning • Land Use Planning • Infrastructure Planning Employee Presentation 3-00 - p 5

  6. Sustainable Water Management • Optimise existing infrastructure • Integrated solutions for wastewater, water supply, stormwater and groundwater management Employee Presentation 3-00 - p 6

  7. Land Use Planning • Four Possible Land Use Scenarios • Need for Flexibility • Staged Growth Employee Presentation 3-00 - p 7

  8. Overall Project – Key Stages • Options Development • Water Balance and contaminant load Modelling • Life Cycle Cost Analysis • Quadruple Bottom Line options analysis of options • Social • Environmental • Economic • Cultural Employee Presentation 3-00 - p 8

  9. Multi – Disciplinary Team • Council: • Strategic Planners • Infrastructure Engineers • Transport Planners • Consultants: • Environmental • Technical • Strategic • Economists Employee Presentation 3-00 - p 9

  10. Nine Strategic Platforms Options Selection NORSGA Objectives Water Cycle Objectives Options Information and details QBL Indicators QBL Assessment Ranked Options Decision – Making Process Employee Presentation 3-00 - p 10

  11. Developing Water Cycle Management Objectives • WCC’s nine strategic platforms: • Urban and rural villages • Integrated transport and communication • Strong innovative economy • Strong communities • Active democracy • Green network • Three waters • Sustainable energy and clean air • Zero waste Employee Presentation 3-00 - p 11

  12. Indicator Development • Based on Nine Strategic Platforms • ‘Paired Matrix’ Assessment of project Objectives by WCC planners and Engineers • Final set of 10 key indicators (with 31 sub-indicators) • Infrastructure facilitates growth • Minimises whole of life costs • Minimises risk to council / community • Contributes to exciting, innovative and vibrant centres • High level of acceptance by community and iwi • Reduces environmental footprint • Supports strategic economic objectives • Replicates natural systems • Future proof • Supports waste management and water conservation Employee Presentation 3-00 - p 12

  13. Options Development • NORSGA area broken into sub-catchments for options identification. • Four broad option categories developed: • Community Based • Community / NORSGA Based • NORSGA / Regionally Based • Regionally Based Employee Presentation 3-00 - p 13

  14. Option 1 - Community Based • Stormwater Reuse / Low impact design • Septic Tanks / Decentralised Wastewater Treatment • Land Disposal of treated wastewater • Compost of Biosolids, or use of existing regional services Employee Presentation 3-00 - p 14

  15. Option 2 – Community / Norsga Based • Stormwater Reuse / Low impact design • Satellite / Decentralised Wastewater Treatment • Land disposal of treated wastewater • Compost of Biosolids, or use of existing regional services Employee Presentation 3-00 - p 15

  16. Option 3 – Norsga / Regionally Based • Stormwater reuse / low impact design • Regional / Satellite / Decentralised wastewater treatment • Some land disposal of treated wastewater • Compost of Biosolids, or use of existing regional services Employee Presentation 3-00 - p 16

  17. Option 4 – Regionally Based • Low impact stormwater design • Wastewater and Biosolids regional treatment and disposal Employee Presentation 3-00 - p 17

  18. Option Information • Quantitative indicators via technical information • Life Cycle Cost Analysis • Water Balance Model outputs • Contaminant Loading Model Results • Qualitative measures by professional judgement • Flexibility of option • Risk to Council / Community Employee Presentation 3-00 - p 18

  19. Indicator Weighting • Three cases investigated: • All indicators equal • Indicators weighted by stakeholder team • 100% cost weighting • Each option given a score of 1-5 against each indicator Employee Presentation 3-00 - p 19

  20. Results • But what if….? Employee Presentation 3-00 - p 20

  21. Progress from here • Land uses might change • New information may surface • More certainty with respect to qualitative indicators • However, THE PROCESS remains the same: • More iterations of options comparison • More refined results Employee Presentation 3-00 - p 21

  22. The Outcome So Far • Engineers, Planners and Economists Working Together • Engineers explore the ‘qualitative’ side of decision-making. • Planners consider the water management implications of planning decisions. • Economists realise that answers aren’t always numbers. • The future NORSGA community – A Step Closer to Sustainability Employee Presentation 3-00 - p 22

  23. Acknowledgements • Waitakere City Council • Ecowater • Maunsell Ltd • Synergine Strategic Ltd • Landcare Research Ltd Employee Presentation 3-00 - p 23

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