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July 31 public forum & workshop
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  • 1. Oh910i1-8594.pptx/1
  • 2. City’s Goal for this Project “Recognizing that Oak Harbor is connected to the pristine waters of Puget Sound, specifically Oak Harbor and Crescent Harbor Bay, the City’s goal is to obtain the highest level of water quality practical while recognizing the limitations of the rate payers of the City to fund the improvements.”Oh910i1-8594.pptx/2
  • 3. Goal of Tonight’s Workshop • Site Where will a new facility be located? Process Discharge What treatment How will the clean technology will be water be used? used?Oh910i1-8594.pptx/3
  • 4. Steps Completed Following Council Direction Report to Council on April 17, 2012 • – • • – • • – • • •Oh910i1-8594.pptx/4
  • 5. Tonight’s Agenda • • – – • – – – • •Oh910i1-8594.pptx/5
  • 6. Site RefinementsOh910i1-8594.pptx/6
  • 7. Planning Charrette, Christensen Design Mgmt June 27 & 28, 2012 Participants; (Non City/Consultants) David Acton, Ratepayer Corky Bridgeford, Property owner Mike Horrobin, Property owner Gray Giordan, Waterside condos Joanne & Russ Hartley, Property Owners John Koetje, Ratepayer Robyn Kolaitis, Ratepayer Jill Johnson, Chamber of Commerce Bruce Neil, Planning Commission Sean Rafferty, Ratepayer Daisy Sapida, Parks Board Dale Smith, Whidbey Island Bank Jeff Trumbore, Ratepayer Ken Tyler, North Whidbey Little LeagueOh910i1-8594.pptx/7
  • 8. Planning Charrette Objective Day 1: Windjammer Vicinity Day 2: Crescent Harbor NorthOh910i1-8594.pptx/8
  • 9. Windjammer Vicinity Conceptual Area Master PlanOh910i1-8594.pptx/9
  • 10. Windjammer Charrette Concept Conceptual Plan ViewOh910i1-8594.pptx/10
  • 11. Windjammer Charrette Concept Conceptual Site Section ViewOh910i1-8594.pptx/11
  • 12. Windjammer Charrette Concept Conceptual Perspective View Street view looking North from park past future re-aligned Bayshore DriveOh910i1-8594.pptx/12
  • 13. Windjammer Alternate Concept Conceptual Plan and Perspective ViewOh910i1-8594.pptx/13
  • 14. Crescent Harbor North Conceptual Area Master PlanOh910i1-8594.pptx/14
  • 15. Crescent Harbor North Charrette Concept Conceptual Plan View for Activated Sludge (AS)Oh910i1-8594.pptx/15
  • 16. Crescent Harbor North Charrette Concept Conceptual Site Section View for ASOh910i1-8594.pptx/16
  • 17. Crescent Harbor North Charrette Concept Conceptual Plan View for MBROh910i1-8594.pptx/17
  • 18. Crescent Harbor North Charrette Concept Conceptual Perspective View (AS or MBR) Street view looking Northeast from Torpedo RoadOh910i1-8594.pptx/18
  • 19. Cost RefinementsOh910i1-8594.pptx/19
  • 20. Level of Detail for MBR WWTP April 2012 8 4 9 4 4 2 7 6 10 1 9 7 7 8 NOTE: Elements 3 & 5 only apply to AS alternativeOh910i1-8594.pptx/20
  • 21. Basis of MBR Construction Cost Estimate April 2012 $90 Site Solids LiquidProcess Element MBR $80 $80.4 M $701. Equalization $0.5 WWTP Project Costs $602. Headworks $5.0 $50 $403. Primary Treatment -- $304. Secondary Treatment $10.1 $20 $105. Tertiary Treatment -- $0 Windjammer Park Crescent Harbor Crescent Harbor Old City Shops Beachview Farm Marina / Sea6. Disinfection $2.2 North Plane Base7. Solids Handling $4.2 Cost Component MBR8. Odor Control $3.0 Total Direct Costs $31.39. Admin/Mnt $2.3 Indirect Costs (GCs, OH&P) $11.210. Site Work $4.0 Subtotal $42.5Total Direct Costs $31.3 Sales Tax (8.7%) $3.7 Subtotal $46.2 Contingency (30%) $13.8Oh910i1-8594.pptx/21 Total Construction Costs $60.0
  • 22. Project Cost Comparison for Year 2030 Windjammer MBR Facility $100 Effluent Discharge Sewage Conveyance $95 $90.9 M WWTP $90 $2.9 $85 Conveyance/Discharge Project Cost, Millions $7.6 Added to WWTP costs $80 No Change (not site specific) $75 $70 $65 $80.4 WWTP Updated to reflect charrette $60 $55 $50 Apr-12Oh910i1-8594.pptx/22
  • 23. Windjammer Charrette Concept Conceptual Plan View Allowance for land acquisition of commercial frontage Site construction cost increases including service road, runoff, etc. Aeration basin cost increased to reflect placement beneath roadOh910i1-8594.pptx/23
  • 24. Project Cost Comparison for Year 2030 Windjammer MBR Facility $100 Effluent Discharge Sewage Conveyance $95 $93.5 M $90.9 M WWTP $2.9 $90 $2.9 $7.6 $85 • Project Cost, Millions $7.6 $2.6 M $80 $75 • $70 • $83.0 $65 $80.4 • $60 $55 • $50 • Apr-12 UpdatedOh910i1-8594.pptx/24
  • 25. Project Cost Comparison for Year 2030 Crescent Harbor North AS Facility $100 Effluent Discharge $95 Sewage Conveyance $91.1 M WWTP $90 $89.0 M $7.9 $85 $7.9 Project Cost, Millions • $80 $11.3 $75 $11.3 • $70 $2.1 M $65 • • $60 $71.9 $69.8 $55 $50 Apr-12 UpdatedOh910i1-8594.pptx/25
  • 26. Summary of Revised Project Costs Year 2030 $100 Effluent Discharge $95 $93.5 M Sewage Conveyance $2.9 WWTP $90 $89.0 M $7.6 $85 $7.9 Project Cost, Millions $80 $75 $11.3 $70 $83.0 $65 $60 $69.8 $55 $50 Windjammer MBR Crescent Harbor North AS Crescent Harbor North MBROh910i1-8594.pptx/26
  • 27. Cost of an MBR Facility Differs By Site Windjammer Vicinity Crescent Harbor N Influent Pump Station $880,000 $-- Aeration Basins $6,000,000 $3,200,000 Influent/Effluent Routing $400,000 $-- Sitework/Yard Piping $1,750,000 $3,000,000 Premium Geotechnical $1,250,000 $375,000 Premium Architecture $1,400,000 $270,000 Direct Cost Subtotal $11,680,000 $6,845,000 Construction Cost(1) $20,250,000 $12,308,000 Land Acquisition(2) $2,075,000 $1,300,000 Project Cost(3) $22,325,000 $13,608,000 NOTES: (1) Includes 25% contingency, Contractor markups, and Sales Tax. (2) Allowance based on assessed value. (2) Total of Construction plus Land Acquisition.Oh910i1-8594.pptx/27
  • 28. Summary of Revised Project Costs Year 2030 $100 WWTP Sewage Conveyance Effluent Discharge $95 $93.5 M $93.5 M $2.9 $90 $89.0 M $7.9 $7.6 $85 $7.9 Project Cost, Millions Higher $80 $11.3 $75 $11.3 $70 $83.0 $65 $74.3 Lower $60 $69.8 $55 $50 Windjammer MBR Crescent Harbor North AS Crescent Harbor North MBROh910i1-8594.pptx/28
  • 29. Summary of Updated Costs • – • • – –Oh910i1-8594.pptx/29
  • 30. Project Phasing Considerations • – • – – – –Oh910i1-8594.pptx/30
  • 31. Phasing Potential differs for each, which reflects in the estimated cost. Windjammer Crescent Harbor N Crescent Harbor N Phasing Option MBR AS MBRCapacity(1)ComponentPerformanceConveyanceOverallEst. Phase 1 Cost(1) $74.2 $75.2 $90.7 NOTE: (1) Current estimates do not include capacity phasing, which can be considered at all sites. Highest Potential Moderate Potential Lowest PotentialOh910i1-8594.pptx/31
  • 32. Phasing Risk differs for each, which does not reflect in the estimated cost. Windjammer Crescent Harbor N Crescent Harbor N Phasing Option MBR AS MBR Low Risk Low Risk Low RiskCapacity (City Controlled) (City Controlled) (City Controlled) Higher RiskComponent N/A N/A (Not City Controlled) Moderate RiskPerformance N/A N/A (Not City Controlled) Low RiskConveyance N/A N/A (City Controlled)Overall Risk of NotBeing Able to Higher Moderate LowPhaseOh910i1-8594.pptx/32
  • 33. Overall Cost Summary • • – – • •Oh910i1-8594.pptx/33
  • 34. Overview of 2010 Rate StudyOh910i1-8594.pptx/34
  • 35. 2010 Wastewater Rate Study • – • • – •Oh910i1-8594.pptx/35
  • 36. 2010 Wastewater Rate Study- Assumptions • • • • •Oh910i1-8594.pptx/36
  • 37. 2010 Wastewater Rate Study Average Single-Family Monthly Bill - Projected Rate Increases Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9 $40 Million $40.00 $42.00 $44.10 $47.65 $51.45 $55.55 $61.10 $67.20 $73.90 $50 Million $40.00 $42.00 $45.15 $49.20 $53.65 $59.00 $64.90 $71.40 $78.55 $60 Million $40.00 $42.00 $45.55 $50.35 $55.65 $61.50 $67.95 $75.10 $83.00 $70 Million $40.00 $42.00 $47.00 $52.00 $57.50 $64.75 $72.85 $81.95 $92.20 $80 Million $40.00 $42.00 $47.00 $52.00 $58.50 $67.25 $77.35 $88.95 $102.30 $90 Million $40.00 $42.00 $47.00 $52.65 $60.55 $69.65 $80.10 $96.10 $115.30 $95 Million $40.00 $42.00 $47.00 $52.65 $60.55 $71.15 $83.60 $100.30 $120.35 $100 Million $40.00 $42.00 $47.00 $54.05 $62.15 $73.05 $85.85 $103.00 $123.60 $140.00 $120.00 $100.00 $40 Million $50 Million $80.00 $60 Million $70 Million $60.00 $80 Million $90 Million $95 Million $40.00 $100 Million $20.00 $0.00 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9Oh910i1-8594.pptx/37
  • 38. Estimated Average Single Family Monthly Rate No Phasing, Crescent Harbor North MBR Current Assumption $110 $100 $90 $80 $70 $60 $50 $40 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9Oh910i1-8594.pptx/38
  • 39. Estimated Average Single Family Monthly Rate No Phasing, Crescent Harbor North MBR Current Assumption $110 No Phasing (CHN MBR) $100 $90 $80 $70 $60 $50 $40 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9Oh910i1-8594.pptx/39
  • 40. Estimated Average Single Family Monthly Rate Phasing, Windjammer MBR, Crescent Harbor North AS Current Assumption $110 No Phasing (CHN MBR) $100 Phasing (Windjammer MBR, CHN AS) $90 Range in Rates $80 $70 Capacity Phasing $60 $50 $40 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9Oh910i1-8594.pptx/40
  • 41. Rate Impact Summary • – – – – • • • •Oh910i1-8594.pptx/41
  • 42. Final Summary and Comparison of Alternatives Crescent Harbor Crescent Harbor Consideration Windjammer MBR North AS North MBR TBL+ Rating Similar (High) Similar (High) Similar (High) Estimated $93.5 million $88.9 million $93.5 million Long-term Cost Moderate potential for Highest potential for Highest potential for Rate Impact rates on low end of rates on low end of rates on high end of (Range as shown) range range range Potential benefits to Potential benefits to Potential benefits to Community Benefit Windjammer Vicinity regional utility regional utility (Charrette Feedback) open space and services and services and transportation transportation transportationOh910i1-8594.pptx/42
  • 43. Final Thoughts • • • •Oh910i1-8594.pptx/43
  • 44. ScheduleOh910i1-8594.pptx/44
  • 45. Schedule - Council Actions & Deadlines Jul 31, 2012 Q&A regarding additional evaluation per Resolution 12-10 Aug 14, 2012 Council resolution on proposed site for further planning and environmental review Oct 16, 2012 Council resolution on proposed phasing plan Dec 31, 2012 Required Facilities Plan submission to Washington Department of Ecology Dec 31, 2014 Required engineering design submission to Washington Department of EcologyOh910i1-8594.pptx/45
  • 46. Questions?Oh910i1-8594.pptx/46