Regional Water System
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McKinney Delivery Point No. 3 to McKinney Delivery Point No. 4 Pipeline; Project No. 101-0505-18; Change Order No. 2
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SUBJECT
recommendation
Authorize a change order for adjustment in quantities resulting in a credit amount of ($607,991.50) to the McKinney Delivery Point No. 3 to McKinney Delivery Point No. 4 Pipeline project.
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PURPOSE
Authorize a change order for three items which include a credit for grouting exterior of tunnel carrier pipe, additional concrete pipeline encasement for two future City of McKinney road crossings and relocation of five street lights along Bloomdale Road.
RECOMMENDATION
The Executive Director, NTMWD staff and HDR, Inc. recommend the Board of Directors authorize a construction change order as follows:
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Contractor: |
Oscar Renda Contracting, Inc. |
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Scope: |
Construction Contract Change Order No. 2 |
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Project: |
No. 101-0505-18 McKinney Delivery Point No. 3 to McKinney Delivery Point No.4 Pipeline |
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Amount: |
($607,991.50) credit |
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Committee: |
This will be a Champion Update at the October 22, 2025, Water Committee meeting |
DRIVER(S) FOR THIS PROJECT
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Strategic Objective: |
1.4 - Reliable and Resilient System Capacity |
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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
• In order to adequately meet future demand, improve system pressures, and improve the transfer of treated water from the Leonard Water Treatment Plant (WTP) into the western area of the existing NTMWD north transmission system, the addition of a 72-inch water transmission pipeline from the site of the McKinney Delivery Point No. 4 to the site of McKinney’s Delivery Point No. 3 is required.
• The new pipeline will serve to close a major loop in the north transmission system and enhance the movement and reliability of water to the remote parts of the system currently experiencing increased demands due to growth.
PROJECT COMPONENTS
• Construction of 40,000 linear feet (LF) of 72-inch diameter water transmission steel pipeline, including all fittings, valves, and appurtenances.
• Installation of approximately 6,800 LF of 72-inch diameter tunnel pipe by trenchless methods under roadways and waterways.
PROPOSED CHANGE ORDER
• The exterior mortar coating on the tunnel carrier pipe was designed to be a sacrificial layer when sliding the pipe into the tunnel. The contractor has elected to carry each section of pipe into the tunnel, eliminating the need for the exterior grout.
• Change order also includes an adjustment to quantities of concrete encasement for piping under two future City of McKinney roadways (Baneberry Lane and Bluewood Drive) and relocation of five street lights along Bloomdale Road.
CHANGE ORDER NO. 2
Description Amount Days
Original Contract Amount $102,886,839.00 880
Prior Change Order(s) Total $0.00 90
Proposed Change Order No. 2
PCO 6 - Deletion of pipe exterior mortar coating ($703,372.75) 0
PCO 12 - Addition concrete encasement $80,000.00 0
PCO 13 - Street lighting relocation $15,381.25 0
Proposed Change Order No. 2 Amounts (decrease) ($607,991.50) 0
Revised Contract Amounts $102,278,847.50 970
FUNDING
Funding in the amount of ($607,991.50) for Change Order No. 2 to Oscar Renda Contracting, Inc., will be credited back to the Regional Water System Construction Funds.