Regional Water System
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Texoma Raw Water Pipeline to Leonard Water Treatment Plant Pipeline
Project No. 101-0642-24; Engineering Services Agreement - Final Engineering
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SUBJECT
recommendation
Authorize funding in the amount of $4,910,000 for final engineering services with Freese and Nichols, Inc. associated with the design of the proposed pipeline from the existing Texoma-Wylie Raw Water Pipeline to the Terminal Storage Reservoir (TSR) at Leonard Water Treatment Plant (WTP).
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PURPOSE
This project will divert 70 million gallons per day (MGD) of raw water from Lake Texoma to the Leonard WTP for blending with Bois d’Arc Lake water. This increases overall raw water available for treatment as Leonard WTP is expanded to its ultimate capacity of 280 MGD.
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: |
Freese and Nichols, Inc. |
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Scope: |
Final Engineering Design |
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Project: |
Texoma Raw Water Pipeline to Leonard WTP Pipeline |
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Amount: |
$4,910,000 |
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Committee: |
This will be an item on the January 22, 2025, Water Committee agenda. |
DRIVER(S) FOR THIS PROJECT
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Strategic Objective: |
1.2 Successfully Deliver Capital Program 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
The Leonard WTP has an ultimate capacity of 280 MGD. Projected demand growth in the service area calls for the Leonard WTP to have a treatment capacity of 210 MGD no later than 2030. Under the current raw water supply configuration, increasing the Leonard WTP treatment capacity to 280 MGD will be constrained by the available water from Bois d’Arc Lake.
Due to changes in potential raw water supply in the overall NTMWD system, the Long-Range Water Supply plan recommended the Texoma Raw Water Pipeline to Leonard WTP Pipeline be in service by 2030 to match the expansion capabilities at the Leonard WTP. In January 2024, Administrative Memorandum No. 24-5978 awarded preliminary design for the Texoma Raw Water Pipeline to Leonard WTP Pipeline. The preliminary design is completed and NTMWD is ready to proceed with the final design.
PROJECT PURPOSE
• Transport approximately 70 MGD of Texoma raw water through an 84-inch poly-coated mortar-lined steel pipe to the Leonard WTP Terminal Storage Reservoirs site.
• This pipeline will connect to the existing 96-inch Texoma Raw Water pipeline south of the Howe Balancing Reservoir and will connect to the existing Bois d’Arc Raw Water Pipeline upstream of the Terminal Storage Reservoirs at the Leonard WTP site. The second terminal storage reservoir is anticipated to begin construction during fiscal year 2025.
• This pipeline corridor is approximately 9 miles, approximately 48,000 linear feet.
• The budgeted construction cost for this project is $108M.
PROJECT COMPONENTS
• Bois d’Arc Lake Raw Water Pipeline (BDL RWPL) Connection Details Design
• Surge analysis to evaluate hydraulic transient behavior of the system.
• Conduct Environmental, Cultural Resources/Archeological, and Geotechnical Investigation.
• Recommendation for corrosion protection system.
• Recommendation for supervisory control and data acquisition (SCADA) and communication system.
• Control Valve Pad and Communication and Controls Building Preliminary Plans
• Final engineering design of pipeline and appurtenances.
• Review final OPCC developed by the Construction Manager at-Risk (CMAR). Consent Agenda Item No. 24C-44 approved the use of CMAR for this project at the November 2024 NTMWD Board of Directors meeting.
• Environmental assessment for Texas Water Development Board (TWDB)
• Land acquisition services and preparation of easement documents. Appraisals, field notes, and offer letters for 9 parcels in the final pipeline alignment corridor selected. The preliminary design contract scope of services included pre-acquisition service for fifty-five (55) parcels and the acquisition of twenty (20) parcels.
BASIC SERVICES
• Bois d’Arc Lake (BDL) Raw Water Pipeline (RWPL) Connection Details Design submittal
• 60% Design Submittal
• 90% Design Submittal
• Final bid documents
• Engineering Design Report
• Construction and Equipment Procurement Packages and Bid Phase Services
• Bid Processing
SPECIAL SERVICES
• Geotechnical Services
• Surge Analysis
• Environmental Services
• Subsurface Utility Engineering
• Topographical Survey Services
• Easement Acquisition Services
• Support for State Water Implementation Fund for Texas (SWIFT) Funding
• Texoma System Operations
CONSULTANT SELECTION PROCESS
• A total of 6 engineering firms were interviewed and Freese and Nichols, Inc. was deemed as the most highly qualified firm for this project.
ENGINEERING SERVICES FEE
Description Amount
Basic Services $3,317,000
Special Services $1,593,000
Requested Amount $4,910,000
FUNDING
The Regional Water System Capital Improvement Fund will provide Freese and Nichols, Inc. with $4,910,000 in funding for final engineering services.