Regional Water System
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South Transmission System New Pipeline; Project No. 101-0676-25; Engineering Services Agreement - Final Engineering
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SUBJECT
recommendation
Authorize funding in the amount of $3,250,000 to Hazen and Sawyer for an engineering services agreement for the final design of the South Transmission System New Pipeline project.
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PURPOSE
Increase water transmission system capacity in the South Transmission System by constructing a new pipeline from the existing 42-inch Tawakoni Water Treatment Plant (WTP) to the 20-inch Kaufman water supply pipeline in order to accommodate growth of the following regional customers: Gastonia Scurry Special Utility District (SUD), College Mound SUD, Becker-Jiba SUD, and North Kaufman Water Supply Corporation (WSC).
RECOMMENDATION
The Executive Director and NTMWD staff recommend the Board of Directors authorize the Executive Director to execute an engineering services agreement (ESA) as follows:
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Consultant: |
Hazen and Sawyer |
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Scope: |
Final Engineering Design |
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Project: |
No. 101-0676-25, South Transmission System New Pipeline |
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Amount: |
$3,250,000 |
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Committee: |
This item was discussed at the November 19, 2025, Water Committee meeting |
DRIVER(S) FOR THIS PROJECT
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Strategic Objective: |
1.4 Reliable and Resilient Systems |
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☐ Regulatory Compliance |
☐ Asset Condition |
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☒ Capacity |
☐ Redundancy/Resiliency |
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☐ Relocation or External Requests |
☐ Operational Efficiency |
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☐ Safety |
☐ Administrative |
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☐ Policy |
☐ Other _____________ |
BACKGROUND
A feasibility study was conducted as part of the NTMWD Project No. 101-0588-21, Water Transmission System CIP Update on the South Transmission System Pipeline. The evaluation included updated water demand projections for four customer entities: Gastonia-Scurry Special Utility District (SUD), College Mound SUD, Becker-Jiba SUD, and North Kaufman Water Supply Corporation (WSC). A hydraulic analysis was conducted to determine an improvement alternative that is feasible and cost-effective. The purpose was to identify recommended improvements to provide adequate water supply to the requested delivery points.
PROJECT PURPOSE
• Final design of approximately 37,500 linear feet (LF) of 42-inch water transmission pipeline from the Tawakoni WTP to Terrell 42-inch pipeline, and finally to the Kaufman 20-inch water supply pipeline to increase transmission system capacity and resiliency as recommended by the feasibility study.
• The planning level estimated construction cost of the project is $32,661,000.
PROJECT COMPONENTS
• Approximately 37,500 LF of 42-inch pipeline, including tunneling.
BASIC SERVICES
• Final Design Services
• Bid Phase Services
SPECIAL SERVICES
• Survey
• Subsurface Utility Engineering
• Geotechnical Engineering
• Corrosion Protection
• Cultural & Archaeological Services
• Permitting
• Texas Water Development Board (TWDB) State Water Implementation Fund for Texas (SWIFT) Funding Coordination
• Easement Acquisition Services
• Transient Analysis
• TCEQ Coordination
ENGINEERING SERVICES FEE
Description Amount
Basic Services $1,361,000
Special Services $1,889,000
Requested Amount $3,250,000
FUNDING
The Greater Texoma Utility Authority (GTUA) will pay the project’s capital costs through funding from the Texas Water Development Board’s (TWDB) State Water Implementation Fund for Texas (SWIFT) program and service the debt. The customers have entered into an agreement with GTUA for repayment of the debt.
Funding in the amount of $3,250,000 to Hazen and Sawyer is to be made available in the Regional Water System Capital Improvement Fund, contingent upon receipt of funds from GTUA.