Water Treatment Plant and Water Distribution Project...2017/03/13 · Water Treatment Plant...
Transcript of Water Treatment Plant and Water Distribution Project...2017/03/13 · Water Treatment Plant...
Water Treatment Plant and Water Distribution Project
West Wise SUD
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
Background
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
Background • Notice of Violation • Public Notices • TCEQ Plant Inspections • Outside Assistance/Plant Audit • Staged Improvement Plan • Agreed Order • Hire Engineer
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
Engineering: Condition Assessment
Engineering: Condition Assessment
sessment ineering: Condition
Eng As
Engineering: Condition Assessment
Engineering: Source Water Assessment
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
“Free” New Plant Site
Engineering: Alternatives Assessment 3. Conventional Water Plant
• Designed to Modern Standards • Reliability / Maintainability • Dam Safety Issues •
Conventional Water Treatment
Conventional Water Treatment Plant
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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$ 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
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$ 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
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$ 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
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$ Texas CDBG $ Water & Waste Disposal Land & Grant Program
$ Emergency Community Assistance Grant
Funding Resources
Texas Water Development Board (TWDB)
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$ Drinking Water State Revolving Fund (DWSRF)
Texas Department of
Agriculture (TDA)
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USDA Rural Development
(RD)
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I fr s t r ( I
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Drinking Water State Revolving Fund
Financing – Operating and Debt Expenses
Financing – Other System Revenues
Financing – Required Rate Revenues
Financing – Current Rate Revenues
Proposed Rate Changes
Average Monthly Rate Impact Residential Customers
Financing – Proposed Rate Revenues
Conceptual Arrangement