Regional Water System
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Leonard Treated Water Pipeline No. 2, Segment E; Project No. 101-0685-26; Engineering Services Agreement - Final Engineering Design
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SUBJECT
recommendation
Authorize funding in the amount of $4,890,150 to HDR Engineering, Inc. for an engineering services agreement for final engineering design of the proposed Leonard Treated Water Pipeline No. 2, Segment E.
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PURPOSE
This project will support the delivery of additional treated water from the Leonard Water Treatment Plant (WTP) to the north and east regions of the District’s service area. Leonard Treated Water Pipeline No. 2 (TWPL2) will consist of approximately 130,400 linear feet (LF) of 84-inch diameter pipe from Leonard WTP High Service Pump Station (HSPS) to McKinney area. Design will be performed in two segments (Segment D and Segment E) by two engineering firms.
Segment E is approximately 58,000 LF is between Collin County Road 500 (in the vicinity of Blue Ridge) to the NTMWD’s McKinney No. 3 to McKinney No. 4 Pipeline where it will connect to Segment D (separate Board action on this agenda).
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: |
HDR Engineering, Inc. |
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Scope: |
Final Engineering Design |
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Project: |
No. 101-0685-26, Leonard Treated Water Pipeline No. 2, Segment E |
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Amount: |
$4,890,150 |
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Committee: |
This will be an item on the February 25, 2026, 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
This project has been under consideration since the 2010 Capital Improvement Plan (CIP) Updates and is a part of the Bois d’Arc Lake (BDL) program. The Leonard Water Treatment Plant (WTP) Phase III expansion project is currently planned to increase the treatment plant’s capacity. In addition, the firm pumping capacity will increase with the construction of Project No. 101-0603A-22, HSPS-South. The maximum pumping capacity for both HSPS-North (HSPS-N) and HSPS-South (HSPS-S) will be 175 MGD each after the expansion. To support these improvements, a new transmission pipeline is required to deliver additional treated water to the North System. The District currently owns a 120-foot-wide easement, which was planned to accommodate the two pipelines and a fiber optic communications cable. The overall project is approximately 130,400 linear feet of a parallel 84- inch pipeline extending from the Leonard WTP HSPS-South to the McKinney No. 3 to McKinney No. 4 Pipeline. To facilitate design and construction, the project was divided into Segments D and E.
PROJECT PURPOSE - Segment E
• Allow for full utilization of Leonard Water Treatment Plant production capacity.
• Deliver additional treated water to the North and East Systems.
• Provide redundancy, resiliency and ability to perform assessment and maintenance of both pipelines, with the capability to always have one pipeline in service at all times.
• The current planning level opinion of probable construction cost (OPCC) is approximately $113,722,000. The engineer will provide an updated OPCC as final engineering progresses.
• Pipeline is planned to be in service by 2030.
• Right of way services for the tie-in point, including right of entry, field notes, appraisals, and property acquisition of permanent easements for the portion of the alignment west of the East Fork Trinity River (EFTR) Tunnel.
PROJECT COMPONENTS
• Route study and alignment selection for the portion of the alignment west of the EFTR Tunnel (~1.5 miles).
• Parallel pipeline horizontal alignment and pipeline vertical profile of approximately 58,060 LF of 84-inch diameter treated water pipeline and associated appurtenances.
• Connections to the McKinney No. 3 to McKinney No. 4 Pipeline and Segment D in the vicinity of Collin County Road (CR) 500.
• Roadway, railway, utility and creek crossings.
• Determine opinion of probable construction cost for the Segment E pipeline.
BASIC SERVICES
• Conduct review of pipeline alignment to identify areas that may result in alignment change.
• Perform design at 30%, 60% and 90% level and issue final bid documents.
• Provide 60%, 90% and 100% opinions of probable construction cost.
• Prepare and coordinate connection details with design consultants for the Segment D portion of the Leonard Treated Water Pipeline No. 2.
• Prepare technical specifications and incorporate NTMWD’s standards into bidding documents.
• Coordinate requirements of various agencies and utility companies regarding roadway, railway, utility, and creek crossings.
• Coordinate with corrosion engineer of Segment D design engineer for implementation of the corrosion design.
• Bid phase services.
SPECIAL SERVICES
• Geotechnical engineering services.
• Subsurface utility engineering (SUE) services.
• Environmental/Cultural and Archeological Services.
• Topographical and Boundary Survey Services.
• Right-of-way acquisition services.
CONSULTANT SELECTION PROCESS
• Five qualified engineering firms were interviewed, and HDR Engineering, Inc. was deemed as the most highly qualified firm for the Segment E portion of the pipeline project.
ENGINEERING SERVICES FEE
Description Amount
Basic Services $3,235,572
Special Services $1,654,578
Requested Amount $4,890,150
FUNDING
Funding to HDR Engineering Inc. in the amount of $4,890,150 is to be made available utilizing the Regional Water System Extendable Commercial Paper (ECP) Program as the appropriation source; issuance of ECP notes will occur as cash needs arise.