water treatment plant and water distribution project...2017/03/13 · water treatment plant...
TRANSCRIPT
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Water Treatment Plant and Water Distribution Project
West Wise SUD
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Agenda Background
• Water Quality
• TCEQ Requirements
• Age of Plant
• Staged Improvements
Alternatives
• Plant Condition
• Geologic Challenges
• Alternatives
• Best Option
• Funding Options
Financing
• Financial Advisor
• Rate Study
• Grants
• Loans
Safe Water for Wise County
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Background
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Background • Health-Based Water Quality Criteria Changed • Plant Designed to Pre-EPA Standards • Package Plant is 40+ yrs old; 20-30 yr Service Life • New Rules + Drought Recovery = Noncompliant Water • TRWD Lake Aeration Project
Samples from West Wise Water Treatment Plant
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Background • Notice of Violation • Public Notices • TCEQ Plant Inspections • Outside Assistance/Plant Audit • Staged Improvement Plan • Agreed Order • Hire Engineer
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Engineering: Condition Assessment • TCEQ Plant Inspections
• “Need a new plant.”
• Environmental Engineer’s Evaluation • Inadequate Design to meet current Standards
• Structural Engineer’s Evaluation • Advanced corrosion/deterioration • Foundation , failing hillside issues
• Geotechnical Engineer’s Evaluation • Slope stabilization likely impractical/unaffordable • Major subsurface works too risky
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Engineering: Condition Assessment
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Engineering: Condition Assessment
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sessment ineering: Condition
Eng As
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Engineering: Condition Assessment
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Engineering: Source Water Assessment
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ant SUD
Engineering: Alternatives Assessment 1. Rehabilitate and Convert Existing Pl
• Several plant configurations developed • More expensive than new facilities • Geologic issues could not be overcome
2. Purchase Water from Walnut Creek
• Additional infrastructure costs • High cost of buy-in + water use rates • About 155% net rate impact
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“Free” New Plant Site
Engineering: Alternatives Assessment 3. Conventional Water Plant
• Designed to Modern Standards • Reliability / Maintainability • Dam Safety Issues •
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Conventional Water Treatment
Conventional Water Treatment Plant
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Alternative Selection
1. Rehabilitate and Convert Existing Plant • Most Expensive; Geologically Unsound
2. Purchase Water from Walnut Creek SUD • Second Most Expensive – More than Double Rates
3. New Plant on TRWD Land • Least Expensive • Avoids Geologic Issues • Gets Plant away from the Dam • Long Term Reliability
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$ E o n o m c a $ T e x a s C D B G $ W a t e r & W a t e D t r e s e d A r e a D p o a L o a n & G a n t
$ C o m m u n t P o g r a m E D A P P r o g r a m D e e o p m e n F u n d
$ D r n k i n g W a e S t a t e C D $ E m e g e n c R e v o n g F u n d C o m m u n i t y A s i s t a n c e
$ D a e R e e F u n d D W S R G a n t D R
$ R u a l W a t e r A s t a n e $ U r g e n t N e e d ( U N F u n d R W A F $ S m a T o w n $ W a t e r n a t r u c u e
E n v o n m e n P r o g a m F u n d S W F T ) F u n d T E P )
$ T e x a s W a e D e v e o p m e n u n d D F u n d
i t r lvi
( F)
s is s l r
r y s
r
$ Texas CDBG $ Water & Waste Disposal Land & Grant Program
$ Emergency Community Assistance Grant
Funding Resources
Texas Water Development Board (TWDB)
c i lly is s s r ( )
$ Drinking Water State Revolving Fund (DWSRF)
Texas Department of
Agriculture (TDA)
i y v l t
( )
is st r li f ( )
USDA Rural Development
(RD)
r sis c ( ) )
I fr s t r ( I
t r l t F
( )
ll s ir t r
(S
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Drinking Water State Revolving Fund
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Financing – Operating and Debt Expenses
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Financing – Other System Revenues
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Financing – Required Rate Revenues
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Financing – Current Rate Revenues
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Proposed Rate Changes
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Average Monthly Rate Impact Residential Customers
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Financing – Proposed Rate Revenues
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Conceptual Arrangement