Wastewater Treatment Plant Facility Plan Update City Project # City of Liberty, Missouri May 6, 2013

Transcription

1 Wastewater Treatment Plant Facility Plan Update City Project # City of Liberty, Missouri May 6, 2013

2 Background 2 HDR Begins Feasibility Study to Evaluate Construction of a New Wastewater Treatment Plan versus Remaining with KCMO Oct 2011 Jan 2012 Council Approves Feasibility Study May 2012 City Authorizes Antidegradation Report and Facility Plan Aug 2012 Antidegradation Report Approved by MDNR Oct 2012 October 2012 Draft Operating Permit issued for public comment Dec 2012 Comment Period Closed without Public Comment Jan March 2013 Workshops and Site Visits Apr 2013 Draft Facility Plan Complete

3 Feasibility Study Results Feasibility Study Estimate Anaerobic Aerobic Conveyance $22,327,100 $22,327,100 WWTP $53,398,200 $40,513,000 TOTAL $75,725,000 $62,840,000 Feasibility Study Debt Service Cost Which Was Inflated to 2014 Adjustment for a Delayed Start from 2014 to 2015 Adjusted Debt Service Feasibility Cost (2015, 4.6 MGD) $78,130,000 $65,027,000 $1,563,000 $1,301,000 $79,693,000 $66,328,000 3

4 Facility Plan Results Facility Plan Estimate Cost Base Cost $66,880,000 The Base Case Wastewater Treatment Facility will provide functionally reliable, consistent treatment, with capacity for the next 20 years. It will meet the Missouri River discharge limits approved by the Missouri Department of Natural Resources, plus provide biological nutrient removal reducing effluent nitrogen and phosphorus. The estimated construction costs are based on costs for similar facilities constructed in the last 5 years and include inflation to a construction period beginning in Enhancements Recommended by Budget Committee Increase in Capacity 30 years $5,280,000 Modify Headworks for Future Expansion $980,000 Dry Pit versus Submersible Pump Stations $1,240,000 Access road from Highway 210 $340,000 4 Total Recommended Capital Cost ($2015) $74,720,000

5 Advantages of Liberty Wastewater Treatment Facility Lower present value Predictable future rate increases Nutrient removal capacity now; KCMO will need to add later Not dependent on KCMO schedule for upgrades to Birmingham Pump Station Capacity for 30 or more years Liberty controls its wastewater and economic development future 5

6 Public Workshop Public Workshop held November 11, 2012 at the Liberty Community Center Residents heard information about the options and gave feedback on preferences 48% 30% 22% 6

7 Workshops with City Staff January 7, 2013 Collection System Improvements and Plant Flow January 22, 2013 Process Evaluation and Hydraulic Review January 28, 2013 Equipment Selection Review February 4, 2013 Biosolids Disposal Options February 19, 2013 Architectural Theme and Building Design 7

8 Workshop Results Wastewater Treatment Facility $74.7 Million Capital Cost 5.1 Million Gallon per Day Capacity Dry Pit Pump Stations Aerobic Digestion of Solids UV Disinfection Class B Biosolids Solids Storage Laboratory Offices Plant Maintenance Facility 8

9 Workshop Results Collection System KCMO 42 Interceptor West Pump Station Force Main Pumps Excess Flow Pumps West Excess Flow Holding Basin East Pump Station Influent Plant Pumps Excess Flow Pumps East Excess Flow Holding Basin 9

10 Facility Plan Recommendations and Alternatives

11 Facility Plan Recommended Facilities (2015$) CONVEYANCE INTERCEPTOR LIBERTY $230,000 INTERCEPTOR KANSAS CITY $5,500,000 CITY OF KANSAS CITY INTERCEPTOR CREDIT $1,920,000 WEST PUMP STATION $4,356,000 PS BAR SCREEN WEST EFHB $2,490,000 WEST FORCE MAIN $2,320,000 EAST EFHB $3,010,000 CONVEYANCE TOTAL $15,986,000 WWTP INFLUENT PUMP STATION $6,445,000 HEADWORKS $4,488,000 AERATION BASINS $9,545,000 RAS PS AND BLOWERS $5,260,000 SECONDARY CLARIFIERS $7,787,000 DEWATERING BUILDING $8,959,000 DIGESTERS $4,520,000 SOLIDS STORAGE $1,100,000 INTERMEDIATE PUMP STATION $2,520,000 UV DISINFECTION $2,440,000 LAB/OFFICE (OPTION 5) $1,700,000 SUBTOTAL $54,764,000 OUTFALL $3,300,000 ACCESS ROAD $670,000 PLANT TOTAL $58,734,000 PROJECT TOTAL $74,720, CAPITALIZED INTEREST $10,718,750 DEBT SERVICE RESERVE FUND $8,227,268 COST OF ISSUANCE $1,286,250 BOND AMOUNT $94,952,268

12 Site Plan INFLUENT PUMP STATION 16. HEADWORKS 20. AERATION BASIN SPLITTER 22. BLOWER PAD 24. AERATION BASIN 30. SECONDARY CLARIFIER FLOW SPLITTER 32. SECONDARY CLARIFIER 34. INTERMEDIATE PUMP STATION 36. FILTRATION (FUTURE) 38. UV DISINFECTION 40. RAS/WAS LIFT STATION 42. ELECTRICAL ROOM 44. DEWATERING/THICKENING 45. DIGESTION BLOWER PAD 46. AEROBIC DIGESTERS 48. CLASS B SOLIDS STORAGE 60. LAB/OFFICE 62. PLANT MAINTENANCE

13 Facility Plan Enhancements Not Funded Description Enhancements Expanded Lab/Maintenance/C&D $6,217,000 Biosolids Drying $6,400,000 3 Clarifiers in lieu of 2 Clarifiers $2,070,000 Blowers Inside a Building $1,020,000 Alternate Biological Nutrient Removal $4,131,000 Rush Creek Pump Station Screen $467,000 13

14 Net Present Value Feasibility Study Alternative 2 Missouri River Discharge Alternative 3 Missouri River Discharge Alternative 1 Missouri River Discharge Option 5 KCMO, Negotiated Rates Option 4 KCMO Projected Rates Facility Plan $ $50 $100 $150 $200 $250 Millions Liberty Recommended Facilities Scenario 2 Financing KCMO Direct to Plant Rates (6.3% through 2020) KCMO Direct to Plant Rates 10%/8% Increases through $ $50 $100 $150 $200 $250 Millions

15 Comparison of Total Annual Revenue Requirements 15 $25 $20 $15 $10 Millions $5 $ Liberty WWTP Scenario 2 Financing KCMO Direct to Plant KCMO 6.3% Through 2020 Liberty WWTP Level Payment Financing

16 Average Annual Revenue Requirement Increase for Liberty Liberty Recommended Facility (Level Debt Payments) Liberty Recommended Facility (Scenario 2 Financing) KCMO Direct to Plant Rates (10%/8% KCMO Increases through 2020) % 1.8% 0.7% 7.2% 4.5% 1.6% 9.9% 5.4% 2.3% KCMO Retail Rates (6.3% KCMO Increases through 2020) 7.6% 4.7% 2.2% 16

17 Cost per Average Household Based on 4,165 gallons per month Alternative $/Month Current 2013 $43.40 KCMO Direct to Plant (10%/8% KCMO Increases) 2019 $ $92.08 KCMO Direct to Plant (6.3% KCMO Increases) 2019 $ $80.55 Construct Liberty Plant (Level Payment Financing) 2019 $ $76.07 Construct Liberty Plant (Scenario 2 Financing) 2019 $ $

18 Advantages of Liberty Wastewater Treatment Facility Lower present value Predictable future rate increases Nutrient removal capacity now; KCMO will need to add later Not dependent on KCMO schedule for upgrades to Birmingham Pump Station Capacity for up to 30 years Liberty controls its wastewater and economic development future 18

19 19 South Liberty Parkway Development

20 South Liberty Parkway Development Description Cost Cumulative Total Enhancement/Benefit West Liberty Interceptor with Capacity for South Liberty Parkway Area Scenario 2 City Extensions and Increased Capacity $5,949,000 $5,949,000 $7,915,000 $13,864, Adjusted Capital/Debt Costs (in 2015 dollars) $13,864,000 The base cost includes use of the shared interceptor currently used by KCMO and Liberty which has limited long term capacity. Construction of a new West Liberty Interceptor will provide capacity for the full West service area. This provides for the infill sewers in the area around the South Liberty Parkway. Description Additional Cost per Month (2019) West Liberty Interceptor with Capacity for South Liberty Parkway $3.10 Scenario 2 City Extensions and Increased Capacity for Ultimate Buildout $

21 Next Steps May 6, st Council Meeting Presentation of Facility Plan May 2 nd Council Meeting on August Bond Election June/July 2013 Public Meetings on Facility Plan August 6, Bond Election 21

22 22 Questions