water and wastewater utility rates - workshop 1...wastewater solar project $2,398,711 $173,000...
TRANSCRIPT
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Water and Wastewater Utility Rates -
Workshop 1
January 12, 2016
Presented By: Diana Langley
Public Works Director
1
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Workshop Agenda
• Workshop 1 – January 12
– Water and Wastewater Operational Needs
– Condition of Water and Wastewater Systems
– Major Capital Improvements Required
• Workshop 2 – February 9
– Presentation of Proposed Rates
– Review of Proposition 218 Process
2
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Enterprise Operations
3
Operating Cost
Debt Service
Capital Investment
= Revenue Requirement
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Enterprise Operations - Water
4
= Revenue Received Operating
Revenues
Capital Revenues
Operating Revenues = Water Sales, Backflow Prevention Fees, Interest on Investments Capital Revenues = Extension Fees, Connection Fees, HWS Surcharge, Interest on Investments
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Enterprise Operations –
Wastewater
5
= Revenue Received
Operating Revenues
Capital Revenues
Operating Revenues – Wastewater Service Charges, Septage Fees, Lab Fees, Pretreatment Permits, Interest on Investments Capital Revenues – Extension Fees, Connection Fees, Interest on Investments
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Funding Allocation Over Time
6
$0
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
$12,000,000
$14,000,000
$16,000,000
$18,000,000
10/11 11/12 12/13 13/14 14/15 15/16 16/17 17/18 18/19 19/20
An
nu
al
Ob
lig
ati
on
s
Fiscal Year
Water Revenue Requirements vs. Revenue Under Existing Rates
Reserve Funded Capital Expenses
Rate Funded Capital Expenses
Debt Service
O&M Expenses
Revenues under Existing Rates
Anticipated Revenues under 2011Approved Rates
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Funding Allocation Over Time
7
$0
$2,500,000
$5,000,000
$7,500,000
$10,000,000
$12,500,000
$15,000,000
$17,500,000
$20,000,000
$22,500,000
10/11 11/12 12/13 13/14 14/15 15/16 16/17 17/18 18/19 19/20
An
nu
al
Ob
lig
ati
on
s
Fiscal Year
Wastewater Revenue Requirements vs. Revenue Under Existing Rates
Reserve Funded Capital Expenses
Rate Funded Capital Expenses
Debt Service
O&M Expenses
Revenues under Existing Rates
Anticipated Revenues under 2011Approved Rates
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Operating Costs - Water
8
$-
$1,000,000
$2,000,000
$3,000,000
$4,000,000
$5,000,000
$6,000,000
$7,000,000
$8,000,000
$9,000,000
10/11 11/12 12/13 13/14 14/15 B15/16
Fiscal Year
Water Operating Costs
Operating Costs = Salaries & Benefits + Materials, Services, & Supplies
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Operating Costs - Wastewater
9
$-
$1,000,000
$2,000,000
$3,000,000
$4,000,000
$5,000,000
$6,000,000
$7,000,000
$8,000,000
$9,000,000
$10,000,000
10/11 11/12 12/13 13/14 14/15 B15/16
Fiscal Year
Wastewater Operating Costs
Operating Costs = Salaries & Benefits + Materials, Services, & Supplies
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Operating Costs
10
Fixed 58%
Variable 42%
Fixed 60%
Variable 40%
Water Wastewater
• Fixed Costs – Do not vary by volume treated • Examples: Raw water, staffing, maintenance, and repairs
• Variable Costs – Vary depending on volume treated • Examples: Power, utilities, and chemicals
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Debt Service - Water
• Existing Debt Obligations
11
Title Amount Approximate Annual Payment
Water Revenue Refunding Bonds - 2013
$21,710,000 $1,391,000
Water SRF Loan – Region 1 $5,927,874 $378,500
Water SRF Loan – Region 2/3 $18,381,507 $1,150,000
Total: $2,920,000
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Debt Service - Water
12
0.50
0.70
0.90
1.10
1.30
1.50
1.70
1.90
11/12 12/13 13/14 14/15 B15/16
De
bt
Co
vera
ge R
atio
Fiscal Year
Debt Service Coverage Ratio
Minimum Required
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Debt Service - Wastewater
• Existing Debt Obligations
13
Title Amount Approximate Annual Payment
Wastewater Revenue Refunding Bonds – 2011
$9,715,000 $500,000
Wastewater Revenue Refunding Bonds – 2014
$7,321,914 $759,000
Wastewater SRF Loan – WWTF $3,500,000 $219,000
Wastewater SRF Loan – Collection
$7,193,965 $386,000
Wastewater Solar Project $2,398,711 $173,000
Total: $2,040,000
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Debt Service - Wastewater
14
-
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
11/12 12/13 13/14 14/15 B15/16
De
bt
Co
vera
ge R
atio
Fiscal Year
Debt Service Coverage Ratio
Minimum Required
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Capital Investment - Water
15
$-
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
$12,000,000
$14,000,000
$16,000,000
$18,000,000
$20,000,000
05/06 06/07 07/08 08/09 09/10 10/11 11/12 12/13 13/14 14/15 B15/16
Fiscal Year
Capital Improvement Program Expenditures
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Capital Investment - Water
• Raw Water Intake & Fish Screen
• Low Lift Pump Station Security Improvements
• WTP Expansion to 36 MGD
• Hillcrest Conversion to Surface Water
• Water Line Replacement Project 2012
• Louise Avenue Water Line Replacement
16
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Capital Investment –
Wastewater
17
$-
$2,000,000
$4,000,000
$6,000,000
$8,000,000
$10,000,000
$12,000,000
05/06 06/07 07/08 08/09 09/10 10/11 11/12 12/13 13/14 14/15 B15/16
Fiscal Year
Capital Improvement Program Expenditures
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Capital Investment –
Wastewater
• Downtown Collection System Rehabilitation &
Replacement
• Oxygen Reactors Improvements
• 12 kV Switchgear Improvements
• Emergency Wastewater Outfall Line
18
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Water System Overview
• Water Treatment Plant
– Placed into operation 1969
– Expanded in 1999 – 24 MGD
– Expanded in 2007 – 36 MGD
– Current Permitted Capacity – 42 MGD
– Average Demands
Year Winter (MGD) Summer (MGD)
2011 8.5 20.7
2012 9.7 22.9
2013 9.0 21.0
2014 9.4 18.7
2015 8.6 15.0 19
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Water Treatment Plant
Sludge Lagoons
Clearwells
Flocculation Basins
Sedimentation Tanks Media Filters
Operations Building
Pump Station
Membrane Filters
Solar Panels
20
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Water System Overview
• Water Distribution System
– 265 Miles of Transmission and Distribution Mains
– Sizes Range From 3” to 36”
– 6 Storage Tanks
21
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Water Infrastructure
Condition & Needs
• Water Treatment Plant
Project Estimated Cost Priority
Electrical & Instrumentation Improvements
Aquifer Storage Recovery/Second Well $4,600,000
Carbon Feed System Replacement $500,000
Backwash Recovery
Sedimentation/Floc Basin Rehabilitation
Fluoride System Replacement
Security Improvements $75,000
Groundwater Well Abandonments $400,000
Total:
22
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Water Infrastructure
Condition & Needs
23
Electrical & Instrumentation Improvements
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Water Infrastructure
Condition & Needs
24
Sedimentation/Floc Basin Rehabilitation
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Water Infrastructure
Condition & Needs
25
Fluoride System Replacement
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Water Infrastructure
Condition & Needs
• Water Distribution System
Project Estimated Cost Priority
Recoating Water Storage Reservoirs $400,000 Annual High
Replacement of Water Mains $27,400,000 High
Replace Water Services/Water Meters $700,000 Annual High
26
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Water Infrastructure
Condition & Needs
• Water Distribution System
Sam Brannan Tank Harter Tank
27
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Water Infrastructure
Condition & Needs
• Water Distribution System
28
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Water Infrastructure
Condition & Needs
• Water Distribution System
29
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Water Infrastructure
Condition & Needs
• Water Distribution System
30
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Water Infrastructure
Condition & Needs
• Water Distribution System
31
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Wastewater System Overview
• Wastewater Treatment Plant
– Placed into operation 1972
– Expanded in 2005
– Current Permitted Capacity – 10.5 MGD
– Current Average Flow – 6.5 MGD
– Solids Coming Into Facility – 11,000 lbs/day
32
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Wastewater Treatment Facility
Secondary Clarifiers
Digesters
Primary Clarifiers
Headworks/BarScreens
Oxygen Reactors
Dewatering Building
Odor Control
Oxygen Generation
Operations
Lab Maintenance Shop
Disinfection Solar
33
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Wastewater System Overview
• Wastewater Collection System
– 173 Miles of Sewer Mains
– Sizes Range From 6” to 42”
– 17 Sewer Lift Stations
34
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Wastewater Infrastructure
Condition & Needs
• Wastewater Treatment Facility
Project Estimated Cost Priority
Digester Improvements
Barscreen Rehabilitation/Replacement $1,200,000
Dewatering System Improvements $3,550,000
Electrical & Instrumentation Improvements $1,000,000
West Chlorine Contact Basin Rehabilitation $650,000
Secondary Clarifier No. 4 $5,500,000
New Outfall Diffuser $11,500,000
Secondary Clarifier Improvements $980,000
New Co-Generation System
35
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Wastewater Infrastructure
Condition & Needs
• Wastewater Treatment Facility
Project Estimated Cost Priority
Oxygen Generation Improvements
Grit Removal Facility $4,000,000
Disinfection System Evaluation & Replacement
$3,150,000
Advanced Treatment & Water Recycling Opportunities Evaluation
$270,000
New Septage Receiving Facility $1,650,000
Total:
36
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Wastewater Infrastructure
Condition & Needs
Digester Lids
37
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Wastewater Infrastructure
Condition & Needs
Barscreen Rehabilitation/ Replacement
38
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Wastewater Infrastructure
Condition & Needs
Dewatering System Improvements
39
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Wastewater Infrastructure
Condition & Needs
Electrical & Instrumentation Improvements
40
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Wastewater Infrastructure
Condition & Needs
Rehabilitation of West Chlorine Contact Basin
41
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Wastewater Infrastructure
Condition & Needs
Secondary Clarifier No. 4
42
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Wastewater Infrastructure
Condition & Needs
New Outfall Diffuser
Existing Outfall Diffuser
43
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Wastewater Infrastructure
Condition & Needs
New Outfall Diffuser
Existing Outfall Diffuser
Proposed Outfall
Diffuser Location
44
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Wastewater Infrastructure
Condition & Needs
• Wastewater Collection System
Project Estimated Cost Priority
Replacement of Sewer Mains $33,000,000 High
Rehabilitation of Sewer Mains & Manholes
Lift Station Improvements $150,000 Annual High
45
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Wastewater Infrastructure
Condition & Needs
• Wastewater Collection System
Manhole Concrete Sewer Pipe
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Wastewater Infrastructure
Condition & Needs
• Wastewater Collection System
Concrete Sewer Pipe Concrete Sewer Pipe
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Conclusion
• Need to recover revenues to meet operating and
debt service costs at a minimum
• Long-term need to collect sufficient revenues for
continued capital investment for rehabilitation
and replacement
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