Derby WPCA - Referendum Public Hearing Presentation - Sept 3 2014

8/11/2019 Derby WPCA - Referendum Public Hearing Presentation - Sept 3 2014

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WPCA Capital Improvements Referendum Public Hearing

City of Derby

Water Pollution Control Authority

Referendum Public Hearing

September 3, 2014


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Presentation Outline

Opening Statement by WPCA Purpose of Referendum How The City Got Here? Wastewater System Understanding

Capital Improvement Projects Capital Recovery Referendum Approach Capital Recovery Non Referendum Approach

Why Have A Referendum? Closing Statement by WPCA Questions and Answers


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Presentation OutlinePUBLIC VOTE TO AUTHORIZE FUNDING

TO ADDRESS AND UPGRADEAGING INFRASTRUCTURE INCLUDING:

South Division Street Wastewater Pumping Station

Burtville Avenue Wastewater Pumping StationRoosevelt Drive Wastewater Pumping Station

Roosevelt Drive Forcemain Replacement

Route 34 Downtown Sanitary Sewers

Water Pollution Control Facility Phase I UpgradesWater Pollution Control Facility Solids Handling System Upgrades


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Few capital improvements over the last 30 years

Rapidly deteriorating infrastructure (50 plus years old) Recurring overflows to the Housatonic River Skyrocketing operational costs Skyrocketing sewer use fees

Enhancement of economic development opportunities

Due to these issues, in 2010 the WPCA began a 20-yearWastewater Facilities Planning Project, which was recently

completed. The plan identified the immediate capitalneeds which are included in this referendum

How The City Got Here


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Water Pollution

Control Facility

PumpingStations

CollectionSystem

Wastewater System Understanding


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4 Municipally Owned and Operated South Division Street (1966)

Burtville Avenue (1965)

Roosevelt Drive (1965) last upgrade 1972

Patty Ann Terrace (1971) replaced in 2014

Three Pumping Stations are in FAILURE MODE

and Need Major Overhauls

Wastewater Pumping Stations

PumpingStations


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INSERT TYPICAL WWPS SECTION HERE

Wastewater Pumping Station Diagram


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South Division St. Pumping Station


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Constructed in 1966 No Upgrades Since

Significant corrosion of underground steel structure

Safety Concerns:

30-ft deep without fall protection

Recurring electrical failures

Frequent station flooding

Costly Routine Maintenance

Monthly station failures

Weekly operational issues

Beyond its useful life


PumpingStations


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Submersible Non Clog Pumps

Piping and valves

Modern electrical & control system

Site paving, fencing and security

Concrete structures

Concrete utility building to house:

Electrical System

Control System

Emergency Generator

New South Division St. PSProject Cost $830,000


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Burtville Avenue Pumping Station


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Constructed in 1965 No Upgrades Since

Safety Concerns: 20-ft deep without fall protection

Recurring electrical failures

Dangerous conditions for routine maintenance

Frequent station flooding

Insufficient: Wetwell volume

Operations space New site needed



PumpingStations


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Relocated Site

Submersible Non Clog Pumps Piping and valves

Modern electrical & control systems

Site paving, fencing and security Concrete structures

Concrete utility building to house:Electrical System

Control System

Emergency Generator

New Burtville Avenue PSProject Cost $1,070,000


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Overflow toHousatonic River

2011 OSHAViolation and Fines

Current DEEPEnforcement Action

Roosevelt Drive Pumping Station


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Make Aerial Show Floodway


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Constructed in 1966 Last Upgrade 1972

Pumps 40-50% of all flow in Derby

Major Impacts on Economic Development

Located in Regulated River Floodway

Numerous overflows and fines

Daily operational issues

Weekly Failures

Significant operational costs


New site neededOverflow to

Housatonic River


PumpingStations


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Significant corrosion of underground steel structure Steel Failures River Water Intrusion

Insufficient wetwell volume

Insufficient operations space

Cannot handle current flows (Overflows)

Constant Pump Clogging (Rags) Safety Concerns

30-ft deep without fall protection

Recurring electrical failures Dangerous conditions for routine maintenance

Regulated confined space entryOverflow to

Housatonic River


PumpingStations


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Energy Efficient Pumps sized for planned economic development

Screening System for rag removal and pump longevity Relocated Site out of Floodway

Piping and valves

Modern electrical & control systems

Site paving, fencing and security Concrete structures

Concrete utility building to house:

Electrical System

Control System

Emergency Generator

New Roosevelt Drive PSProject Cost $7,460,000


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Piped from new Pumping Station to WPCF

Increase Roosevelt Drive Pumping Station capacityfrom 2,000 gallons per minute to 4,000 gallons perminute

Pipe sized for planned economic development increased from 12-inch diameter to 16-inch diameter

Improved long term maintenance access

Staged with Route 34 ConnDOT Widening projectfor cost savings

New Roosevelt Drive ForcemainProject Cost $3,780,000


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Current downtown sewers are undersized and limit

the ability for economic development, refurbishmentof defunct downtown properties and downtown re-development

Pipe sized for planned economic development and

downtown re-development Improved long term maintenance access

Project construction coordinated with ConnDOT

Route 34 Improvements/Widening project. WPCApays for pipe installation DOT pays for Paving,Traffic Control, etc. resulting in significant costsavings($3,000,000 to $6,000,000 savings)

Downtown/Route 34 Sewer ReplacementProject Cost $3,660,000


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Manual Rag Removal System

Ineffective Rag Removal (noprotection of WPCF equipment)

Labor Intensive/Costly Process

Structural Deterioration

Safety Issues

Permit Compliance Issues Flooding

Water Pollution Control FacilityPreliminary Treatment System - Screening


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Automatic Screening System

1/4 Bar Spacing for maximum ragremoval

Screenings washer compactor

Reduced long term maintenance

Reduced Flooding

Stabilize normal WPCF flow

Maintaining Permit Compliance

Modern Technology

Water Pollution Control FacilityPreliminary Treatment System - Screening


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Influent Pumping System Deficient Bearings

Inefficient Pumping System

Total of Three pumps

Daily Pump Clogging Frequent Maintenance

Overheating Motors

Structural Concerns

Water Pollution Control FacilityPreliminary Treatment System Influent Pumping Station


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Influent Pumping System Four energy efficient pumps

Piping and valves

Modern electrical & controls

Concrete repairs to structure Brick repairs to building

Water Pollution Control FacilityPreliminary Treatment System Influent Pumping Station


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Grit Removal System

Does not meet current standards Insufficient Capacity resulting in

inefficient grit capture

Flooding during high flowconditions

Odor concerns

Water Pollution Control FacilityPreliminary Treatment System Grit Removal


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Grit Removal System

Multiple Grit Trays in existing tank for95% grit capture

Grit Processing/Cleaning System toReduce Odors

Piping and valves


Eliminate Safety Issues & Flooding

Water Pollution Control FacilityPreliminary Treatment System Grit Removal


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Anaerobic Digestion System

All equipment is original (1966) Tank covers and building roof leak

Structural deterioration to roofs, tanksand building

Equipment when operationalconstantly clogged

System reduced sludge volume andassociated disposal costs by 50%

when operational ($60,000 per year) All equipment is currently not

operational and is offline

Water Pollution Control FacilityAnaerobic Digestion System


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Anaerobic Digestion System

Fixed digester covers w/ gas collection system Energy efficient digester mixing and heating

systems

Piping and valves


Structural repairs to building components

Gas turbine for digester heating and energyproduction to reduce WPCF electrical costs

Renewable Green Energy Source

Reduce sludge volume and associated disposalcosts by up to 50% ($75,000 per year)

Allow for sludge processing from othercommunities to offset user costs (regionalapproach)

Water Pollution Control FacilityAnaerobic Digestion System


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Water Pollution Control FacilitySolids Handling System


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Solids Handling Facilities Heart of the WPCF operations

Major impacts to WPCF permit compliance andannual operating costs ($400,000 per year)

No Process Redundancy system runs 7 days aweek and operators are paid overtime or WPCF

would fail Permit Requirements!!! Belt Filter Press (1980)

Constant Failures 2010, 2011, 2012, 2013, 2014!!

Rotary Thickener (1972)

Constant Failures 2010, 2011, 2012, 2013, 2014!! All systems well beyond useful life and were

recommended for replacement in 2000!!



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Solids Handling Facilities

Consolidated Processing System 2 Belt Filter

Presses operating during normal WPCF hours Dry Bulk Polymer Processing System

Odor Control Chemical Feed System

Modern Non-Clog Primary Sludge Pumping

Modern Non-Clog Secondary Sludge Pumping Piping and valves


New external WPCF main electrical system sized for

future considerations Structural repairs to building components

Allow for sludge processing from other communitiesto offset user costs (regional approach)



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WPCF Phase I Upgrades - $8,940,000

Fine Screening System w/ Washer Compactor

Influent Pumping Station Upgrades

Grit Removal System Upgrades

Anaerobic Digestion System Upgrades

Possible Revenue Generation through Digestion System

Possible Renewable Energy through Green Digestion System

WPCF Solids Handling System Upgrades - $5,000,000

Fine Screening System w/ Washer Compactor

Influent Pumping Station Upgrades

Grit Removal System Upgrades

Possible Revenue Generation through Regional Sludge Processing

Water Pollution Control FacilityProject Summary


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Roosevelt Drive Pumping Station - $7.46 M

Roosevelt Drive Forcemain - $3.78 M

South Division Street Pump Station - $0.83 M

Burtville Avenue Pump Station - $1.07 M

WPCF Solids Handling System Upgrades - $5.00 M

Bid April 2014 - Project is Construction Ready WPCF Phase I Upgrades - $8.94 M

Route 34 Sewer Improvements - $3.66 M

Total $30.74 M

All Projects include a contingency and an escalation to theyear of construction

Referendum Cost Summary


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Bar Chart Here


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6,831 Citywide Blended Residential and CommercialUnits

Single Family = 1 Unit Two Family = 2 Unit

Three Family = 3 Unit

Condo Unit = 1 Unit

Mixed Use/Commercial Units based on Flow Conversion toResidential Equivalent (153 gpd)

Units Breakdown Residential 5,358

Mixed Use 193 Commercial 1,280

Total 6,831

Capital RecoveryReferendum Approach


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Current Typical Single Family Bill Flat Fee = $250.00

Consumption Fee = $115.00Total $365.00

After Referendum Typical Single Family Bill

Flat Fee = $250.00 Consumption Fee = $115.00

Capital Recovery Fee = $257.00

Total $622.00

WPCA to Implement Multiple Payments for entire bill whichwill avoid other City Taxes (July/Property Tax Season)



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Current Typical Two Family Bill Flat Fee = $500.00

Consumption Fee = $230.00Total $730.00

After Referendum Typical Single Family Bill

Flat Fee = $500.00 Consumption Fee = $230.00

Capital Recovery Fee = $514.00

Total $1,244.00

WPCA to Implement Multiple Payments for entire bill whichwill avoid other City Taxes (July/Property Tax Season)



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Division St Pumping Station - $830,000 $61 per unit capital recovery fee per year for 2 years

Burtville Avenue Pumping Station - $1,070,000 $80 per unit capital recovery fee per year for 2 years

Roosevelt Drive Pumping Station - $7,460,000 $365 per unit capital recovery fee per year for 3 years

Roosevelt Drive Pumping Station Forcemain - $3,780,000

$280 per unit capital recovery fee per year for 2 years Route 34 / Downtown Sewer Replacement - $3,660,000

$270 per unit capital recovery fee per year for 2 years

WPCF Solids Handling System Replacement - $5,000,000 $370 per unit capital recovery fee per year for 2 years

WPCF Phase I Upgrades - $8,940,000 $437 per unit capital recovery fee per year for 3 years

Significant Variations in Capital Recovery Cost Per Unit per Year

Capital RecoveryNon-Referendum Approach


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Capital Recovery fees would be a special assessment assessedby the WPCA. Special assessments would be due in full in 30days.

Assessments could be issued at any time due to the condition ofthe equipment, making it difficult for household budgeting

Project assessments may not be staggered resulting in multipleassessments per year (i.e. $370 for WPCF solids handling and$365 for Roosevelt Drive Pumping Station or $735 assessed inone year)

Unpredictability of assessments can result in significantfluctuations in annual costs per year (i.e. $365 one year to $1,100the next year)

NOTE:The capital recovery fees are for project capital costs only. Additionalcosts for emergency operations until projects are completed could berequired and are not included

Capital RecoveryNon-Referendum Approach


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You are voting on How the capital projects arepaid for not whether the capital projects need tobe completed.

Gives you the choice of How to pay for these

projects.

Why Have a Referendum?


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Citywide benefit

Address Administrative Enforcement Actionsfrom CT DEEP

Stabilizes annual WPCA budget

Stabilizes financial impacts to system users Addresses Environmental Concerns

Limits cities risk related to emergency

replacement and associated costs /environmental impacts

Allows for Economic Development and Growth

WPCA Closing Statement


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QUESTIONS?

City of Derby

Water Pollution Control Authority

Documents

Derby WPCA - Referendum Public Hearing Presentation - Sept 3 2014