Upper East Fork Interceptor System
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McKinney Prosper Sewer Improvements; Project No. 501-0641-24; Engineering Services Agreement, Final Engineering
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SUBJECT
recommendation
Authorize funding in the amount of $612,000 to Garver, LLC for an engineering services agreement for final design of the McKinney Prosper Sewer Improvements project.
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PURPOSE
Improve the performance, capacity, and reliability of the McKinney Prosper Sewer system by adding a parallel pipeline to help convey future flows from the City of McKinney to the planned Stover Creek Lift Station.
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: |
Garver, LLC |
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Scope: |
Final Engineering Design |
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Project: |
No. 501-0641-24, McKinney Prosper Sewer Improvements |
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Amount: |
$612,000 |
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Committee: |
This will be an item on the June 25, 2025, Wastewater Committee meeting agenda |
DRIVER(S) FOR THIS PROJECT
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Strategic Objective: |
1.1 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
PROJECT PURPOSE
• The Upper East Fork Interceptor System (UEFIS) Regional Capacity Assessment and Assurance study identified the need for increased capacity of the McKinney Prosper Sewer, serving the cities of McKinney and Prosper. The City of McKinney has plans to redirect flow from their Stonebridge Lift Station to NTMWD’s McKinney Prosper Sewer.
• This project will provide the capacity needed for accommodating the system flow projections from the Stonebridge areas of north of US Highway 380 (US 380).
• A future extension will provide additional capacity as the City of Prosper's flow increases. This will be a separate project.
• The preliminary design report recommends a parallel 42-/48-inch interceptor to meet both the City of McKinney and the City of Prosper’s future flow projections and convey flow to the planned Stover Creek Lift Station.
• The planning level estimated construction cost is $8,052,000.
PROJECT COMPONENTS (Phase I)
• Approximately 5,000 linear feet (LF) of parallel 42/48-inch gravity interceptor generally located from Easley Drive to the future Stover Creek junction structure near the intersection of US 380 and Ridge Road
• Interconnections between the two pipelines at the existing McKinney Prosper Sewer manholes
• Connection of the parallel pipe to the future junction structure being constructed under the Stover Creek Lift Station project, NTMWD Project No. 501-0625-23.
BASIC SERVICES
• Project management, coordination, and design review workshops
• Final engineering design services
• Bid phase services
SPECIAL SERVICES
• Topographic survey
• Easement document preparation
• Geotechnical engineering
• Subsurface utility engineering
ENGINEERING SERVICES FEE
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Description |
Amount |
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Basic Services |
$502,900 |
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Special Services |
$109,100 |
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Requested Amount |
$612,000 |
FUNDING
Funding in the amount of $612,000 to Garver, LLC is to be made available utilizing the Upper East Fork Interceptor System Extendable Commercial Paper (ECP) Program as the appropriation source; issuance of ECP notes will occur as cash needs arise.