Wastewater Treatment PlantFacility Plan Update

City Project #11-013City of Liberty, Missouri

May 6, 2013

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Oct‐2011 ‐HDR Begins Feasibility Study to Evaluate Construction of a New Wastewater Treatment Plan versus Remaining with KCMO

‐‐

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‐March2013 ‐ Workshops and Site Visits

‐Apr‐2013 ‐ Draft Facility Plan Complete

Background

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Feasibility Study Results

Feasibility Study Estimate Anaerobic AerobicConveyance $22,327,100 $22,327,100WWTP $53,398,200 $40,513,000TOTAL $75,725,000 $62,840,000

Feasibility Study Debt Service Cost Which Was Inflated to 2014 $78,130,000 $65,027,000

Adjustment for a Delayed Start from 2014 to 2015  $1,563,000 $1,301,000

Adjusted Debt Service Feasibility Cost (2015, 4.6 MGD) $79,693,000 $66,328,000

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Facility Plan ResultsFacility Plan Estimate CostBase Cost $66,880,000

The Base Case Wastewater Treatment Facility will provide functionally reliable, consistenttreatment, with capacity for the next 20 years. It will meet the Missouri River discharge limitsapproved by the Missouri Department of Natural Resources, plus provide biological nutrientremoval reducing effluent nitrogen and phosphorus. The estimated construction costs arebased on costs for similar facilities constructed in the last 5 years and include inflation to aconstruction period beginning in 2015.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

Total Recommended Capital Cost ($2015) $74,720,000

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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

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Public Workshop• Public Workshop

held November 11, 2012 at the Liberty Community Center

• Residents heard information about the options and gave feedback on preferences

30%

48%

22%

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Workshops with City Staff

• January 7, 2013Collection System Improvements and Plant Flow

• January 22, 2013Process Evaluation and Hydraulic Review

• January 28, 2013Equipment Selection Review

• February 4, 2013Biosolids Disposal Options

• February 19, 2013Architectural Theme and Building Design

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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

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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

Facility Plan Recommendations and Alternatives

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Facility Plan Recommended Facilities (2015$)

CONVEYANCEINTERCEPTOR ‐ LIBERTY $230,000INTERCEPTOR ‐ KANSAS CITY $5,500,000CITY OF KANSAS CITY INTERCEPTOR CREDIT ‐$1,920,000WEST PUMP STATION $4,356,000PS BAR SCREENWEST EFHB $2,490,000WEST FORCE MAIN $2,320,000EAST EFHB $3,010,000CONVEYANCE TOTAL $15,986,000

WWTPINFLUENT PUMP STATION $6,445,000HEADWORKS $4,488,000AERATION BASINS $9,545,000RAS PS AND BLOWERS $5,260,000SECONDARY CLARIFIERS  $7,787,000DEWATERING BUILDING $8,959,000DIGESTERS  $4,520,000SOLIDS STORAGE $1,100,000INTERMEDIATE PUMP STATION $2,520,000UV DISINFECTION $2,440,000LAB/OFFICE (OPTION 5) $1,700,000SUBTOTAL $54,764,000

OUTFALL $3,300,000ACCESS ROAD $670,000PLANT TOTAL $58,734,000

PROJECT TOTAL $74,720,000

CAPITALIZED INTEREST $10,718,750DEBT SERVICE RESERVE FUND $8,227,268COST OF ISSUANCE $1,286,250BOND AMOUNT $94,952,268 

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Site Plan

12. INFLUENT PUMP STATION16. HEADWORKS20. AERATION BASIN SPLITTER22. BLOWER PAD24. AERATION BASIN30. SECONDARY CLARIFIER FLOW SPLITTER32. SECONDARY CLARIFIER34. INTERMEDIATE PUMP STATION36. FILTRATION (FUTURE)

38. UV DISINFECTION40. RAS/WAS LIFT STATION42. ELECTRICAL ROOM44. DEWATERING/THICKENING45. DIGESTION BLOWER PAD46. AEROBIC DIGESTERS48. CLASS B SOLIDS STORAGE60. LAB/OFFICE62. PLANT MAINTENANCE

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Facility Plan EnhancementsNot Funded

Description EnhancementsExpanded Lab/Maintenance/C&D $6,217,000Biosolids Drying $6,400,0003 Clarifiers in lieu of 2 Clarifiers $2,070,000Blowers Inside a Building $1,020,000Alternate Biological Nutrient Removal $4,131,000Rush Creek Pump Station Screen $467,000

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Net Present Value

Facility Plan

Feasibility Study

 $‐  $50  $100  $150  $200  $250

Option 4 ‐ KCMO Projected Rates

Option 5‐ KCMO,  Negotiated Rates

Alternative 1 ‐ Missouri River Discharge

Alternative 3 ‐ Missouri River Discharge

Alternative 2 ‐ Missouri River Discharge

Millions

 $‐  $50  $100  $150  $200  $250

KCMO Direct to Plant Rates

KCMO Direct to Plant Rates (6.3% through 2020)

Liberty Recommended Facilities ‐ Scenario 2 Financing

Millions

10%/8% Increases through 2020

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 $‐

 $5

 $10

 $15

 $20

 $25

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

2030

2031

2032

2033

2034

2035

2036

2037

2038

2039

Millions

Liberty WWTP ‐ Scenario 2 Financing KCMO Direct to Plant

KCMO 6.3% Through 2020 Liberty WWTP ‐ Level Payment Financing

Comparison of Total Annual Revenue Requirements

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Average Annual Revenue Requirement Increase for Liberty

2014‐2018 2019‐2023 2024‐2039

Liberty Recommended Facility (Level Debt Payments)

9.7% 1.8% 0.7%

Liberty Recommended Facility (Scenario 2 Financing)

7.2% 4.5% 1.6%

KCMO Direct to Plant Rates (10%/8% KCMO Increases through 2020)

9.9% 5.4% 2.3%

KCMO Retail Rates(6.3% KCMO Increases through 2020) 7.6% 4.7% 2.2%

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Cost per Average HouseholdBased on 4,165 gallons per month

Alternative $/Month

Current – 2013 $43.40

KCMO Direct to Plant (10%/8% KCMO Increases)

2019 $75.84

2024 $92.08

KCMO Direct to Plant (6.3% KCMO Increases)

2019 $67.92

2024 $80.55

Construct Liberty Plant (Level Payment Financing)

2019 $72.74

2024 $76.07

Construct Liberty Plant (Scenario 2 Financing)

2019 $64.19

2024 $79.22

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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

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South Liberty Parkway Development

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South Liberty Parkway DevelopmentDescription Cost Cumulative Total Enhancement/Benefit

West Liberty Interceptor with Capacity for South Liberty ParkwayArea

$5,949,000 $5,949,000

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. 

Scenario 2 City Extensions and Increased Capacity

$7,915,000 $13,864,000 This provides for the infill sewers in the area around the South Liberty Parkway.

2013 Adjusted Capital/Debt Costs (in 2015 dollars) $13,864,000

Description Additional Cost per Month (2019)

West Liberty Interceptor with Capacity for South Liberty Parkway $3.10Scenario 2 City Extensions and Increased Capacity for Ultimate Buildout $4.13

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Next Steps

• May 6, 2013 – 1st Council Meeting Presentation of Facility Plan

• May – 2nd Council Meeting on August Bond Election• June/July 2013 – Public Meetings on Facility Plan• August 6, 2013 - Bond Election

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QuestionsQuestions