Capture, Reduse and Reuse - Integrated Master Planning a New Community

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BCWWA 2013 Annual Conference Water Conservation and Sustainability Series presented by Glen Shkurhan of Urban Systems

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Capture, Reduse and Reuse - Integrated Master Planning a New Community

  1. 1. BCWWAAnnual Conference2013CAPTURE, REDUCE AND REUSEINTEGRATED WATER SYSTEMS MASTERPLANNING FOR A NEW COMMUNITYGlen Shkurhan, P.Eng.April 2013
  2. 2. Presentation GoalsDescribe unique integrated water systemsScenario’s and “What If’s?”Approach to analysis and assessmentPerformance variabilityAdaptive management
  3. 3. “Harmony”; guiding principles“The provision of high quality water andwastewater services through responsible,sustainable, and innovative stewardship ofresources”.“Smart Growth – effective use of resources”.
  4. 4. Water System GoalsCAPTUREREDUCEREUSE
  5. 5. WESTEAST
  6. 6. STAGE 1
  7. 7. SCENARIOS• System Configuration, or Functional Condition• Time, or Stage of Development• Climatic Conditions
  8. 8. SCENARIOS
  9. 9. WHAT IF’S?
  10. 10. WaterRaw / ReclaimedSewerRainwater
  11. 11. PRECIPITATION VARIABILITY1:100 wet 585 mm1:100 dry 270 mmAverage 405 mm
  12. 12. 17PARAMETER PARAMETER VALUE FOR INDICATED SCENARIODEMAND CONDITION: AVERAGE HIGH LOW LOW HIGHUNITSRAINFALL CONDITION: AVERAGE DRY WET DRY WETUnit ADD, Residential 225 275 175 175 275 L/cap/dayUnit Irrigation Rate - Residential / ICI (1) (1) (1) (1) (1) See noteIrrigated Lot Area Ratio (SF) 0.30 0.60 0.10 0.10 0.60 ha/haIrrigation Period - Potable/Raw Water 151 151 110 110 151 daysIrrigation Period - Treated Effluent 129 148 110 148 110 daysPopulation Density, Residential – SF 3.1 3.1 2.9 2.9 3.1 capita/DUPopulation Density, Residential – MF 2.8 2.8 2.6 2.6 2.8 capita/DUImpervious Ratio – SF 0.38 0.30 0.50 0.50 0.30 ha/haRDII R-Factor 0.02 0.01 0.03 0.01 0.03GWI Unit Rate 0.011 0.011 0.011 0.007 0.015 L/s/haPrecipitation (rain+snow) – Annual 0.412 0.270 0.584 0.270 0.584 mEvaporation – Annual 0.7 0.8 0.7 0.8 0.7 mSeepage Loss From Lake/Ponds – Annual 0.200 0.300 0.100 0.300 0.100 mDEMAND VARIABILITY
  13. 13. 18ANALYTICAL APPROACH1. MASS BALANCE (Excel, MS)2. WATER DISTRIBUTION (WaterCAD, Bentley)3. SANITARY COLLECTION (MOUSE, DHI)4. HYDROLOGY (MIKE SHE, DHI)5. NPS POLLUTANT LOADING (Excel, MS)6. GROUNDWATER7. LAKE
  14. 14. 19WATER’S DISTRIBUTION – STAGE 1
  15. 15. WATER’S DISTRIBUTION – ULT.
  16. 16. Max Operating Level = 1181.7 (Overflow Pumps “ON”)Minimum Water Level = 1181.5 (Bow Pumps “ON”)Normal Water Level = 1181.4 (Bow Pumps “OFF”)Maximum Water Level = 1183.1Wave Action Free Board = 0.9 mMin Ground = 1184.0100 Year Runoff Storage = 1.4 m2.8 mNormal Operating Range = 0.2 mStorage = 0.3 mLAKE LEVEL PERFORMANCE
  17. 17. GOLF COURSE INUNDATION
  18. 18. NPS POLLUTANT LOADS
  19. 19. ModularConservativePilotIMPLEMENTATION
  20. 20. ADAPTIVE MANAGEMENT
  21. 21. CLIMATEPrecipitationTemperatureEFFECTIVENESSMetered flows at key points in systemCOMPLIANCEImplementationOperationsDevelopmentVALIDATIONLake LevelsWater QualityBow River DemandOverflow
  22. 22. Model CalibrationUpdate PredictionsCorrections
  23. 23. Science ?Design ?Implementation ?Operation ?
  24. 24. Demands & ConsumptionAdjust User RatesDownscaling Future PhasesSupply to External MarketWWTP & StorageExpand or Defer Plant / StorageOffsite Disposal – Effluent / SolidsAdjust Effluent Irrigation
  25. 25. WTPAdjust User RatesExpand or Defer Plant / StorageEmergency Lake BypassLake & PondsAdjust Operational ProtocolsIncrease Pre-treatmentModified Discharge
  26. 26. CLOSING TAKEAWAYS• Define Goals and Objectives• Identify Opportunities and Constraints• System Configuration and Interactions• Scenario’s and What If’s?• Analytical Approach and Tools• Variability, Risks, and Uncertainties• Implementation Strategy• Adaptive Management and Action Plan
  27. 27. Thank You

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