Title
Consider/Discuss/Act on a Resolution Authorizing the City Manager to Execute an Interlocal Cooperation Agreement between the City of McKinney and the North Texas Municipal Water District (NTMWD), for Wilson Creek Sewer System, Wilson Creek Relief Interceptor, and Rowlett Creek Trunk Sewer Extension
Summary
COUNCIL GOAL: Direction for Strategic and Economic Growth
MEETING DATE: August 6, 2024
DEPARTMENT: Development Services
CONTACT: Gary Graham, PE, Director of Engineering
Ryan Gillingham, PE, Director of Public Works
Blake Sills, PE, CIP Manager
RECOMMENDED CITY COUNCIL ACTION:
• Approval of the Resolution
ITEM SUMMARY:
• This item authorizes the City Manager to enter into an Interlocal Cooperation Agreement with the North Texas Municipal Water District (NTMWD) for Wilson Creek Sewer System, Wilson Creek Relief Interceptor, and Rowlett Creek Trunk Sewer Extension.
• The Interlocal Cooperation Agreement includes six (6) components as follows:
o NTMWD to pay for increasing the rim elevation of up to eighteen (18) manholes within the McKinney-owned portion of the Wilson Creek Sewer System. McKinney has identified eighteen manholes within the McKinney-owned Wilson Creek Sewer System that have the potential for sanitary sewer overflows, and which need to be elevated to avoid overflowing; and
o NTMWD will provide McKinney quarterly completion schedule updates regarding the NTMWD Stover Creek Lift Station and Force Main projects. McKinney agrees to help and support NTMWD in completing the Stover Creek Lift Station and Force Main by providing information on current and future development plans, changes to roads/highways, or other infrastructure improvements within the Stover Creek corridor within McKinney’s jurisdiction as McKinney becomes aware of such projects. McKinney will also help expedite applicable jurisdictional reviews and approvals, and help expedite easement acquisitions; and
o McKinney and NTMWD has agreed to collaborate in good faith on a flow monitoring program to monitor the flows within the McKinney-owned Wilson Creek Sewer System; and
o Transfer of ownership of the downstream interceptor segment of the McKinney-owned Wilson Creek Sewer System (the “Wilson Creek Relief Interceptor”) to NTMWD for NTMWD’s incorporation into NTMWD’s Upper East Fork Interceptor System (UEFIS); and
o Temporary Junction Box to McKinney-owned Wilson Creek Sewer System; and
§ McKinney grants permission to NTMWD to design, construct and install at NTMWD’s sole cost and expense a temporary junction box to the McKinney-owned Wilson Creek Sewer System, specifically the McKinney Wilson Creek Relief Interceptor, for the NTMWD Sloan Creek Force Main project; and
§ This temporary junction box will allow for early start-up, testing, and operation of the NTMWD Sloan Creek Lift Station; and
§ NTMWD will ultimately replace the temporary junction box with a conflict manhole and extend and complete the Sloan Creek Force Main to the NTMWD Wilson Creek Lift Station for wastewater conveyance and treatment at the NTMWD Sister Grove Regional Water Resource and Recovery Facility at NTMWD’s sole cost and expense; and
§ NTMWD Sloan Creek Lift Station and Force Main are under construction at the time of this Agreement with anticipated completion by Spring 2024. The location of the temporary junction box is within the limits of the McKinney-owned Wilson Creek Sewer System segment proposed to be transferred to NTMWD by this Agreement. NTMWD has requested, and McKinney has agreed, to grant NTMWD permission to proceed with the design, construction and installation of the temporary junction box in good faith while the terms and conditions of this Agreement are being finalized and before the Agreement is executed; and
§ NTMWD’s schedule for removing the temporary junction box and completing the permanent extension of the Sloan Creek Force Main to the Wilson Creek Lift Station is dependent upon available downstream conveyance and treatment capacity; and
§ NTMWD has agreed to raising one (1) McKinney manhole, Manhole on the McKinney-owned Wilson Creek Sewer System, specifically the Wilson Creek Relief Interceptor, so that the NTMWD Wilson Creek Lift Station junction structure is the lowest rim elevation of the upstream interceptor system; and
o NTMWD has agreed to accept the transfer ownership of the Rowlett Creek Trunk Sewer Extension shown in the plans and specifications entitled “Rowlett Creek Trunk Sewer Extension”, dated July 1995 that were prepared by Shimek Jacobs & Finklea, Consulting Engineers (which Rowlett Creek Trunk Sewer Extension is also described as Rowlett Creek Trunk Sewer, Contract No. IRS 95-6, Engineer signed and dated October 18, 1995), from McKinney to NTMWD and the inclusion of the Rowlett Creek Trunk Sewer Extension with the NTMWD UEFIS.
BACKGROUND INFORMATION:
• The City and NTMWD have been collaborating for the last several months to resolve and agree to the components of the Interlocal Cooperative Agreement.
• The proposed agreement will be reviewed and approved by the NTMWD Board of Directors at their August 22, 2024, meeting.
FINANCIAL SUMMARY:
• N/A
BOARD OR COMMISSION RECOMMENDATION:
• N/A