Title
Resolution - A Resolution of the City Council of the City of Mansfield, Texas, Approving Professional Services Contracts with Parkhill Smith & Cooper, Inc. for Design Services and Brittain and Crawford, LLC for Surveying Services, and Approving Funding in an Amount not to Exceed $198,700.00 for the US287 Crossing Sewer Repair; Finding That the Meeting at Which This Resolution Is Passed Is Open to the Public as Required by Law; And Declaring an Effective Date; Finding That the Meeting at Which This Resolution Is Passed Is Open to the Public as Required by Law; And Declaring an Effective Date (Utility Fund)
Requested Action
Consider the authorization of funding and approval of contracts.
Recommendation
The authorization of funding in an amount not to exceed $198,700.00 and approval of contracts, including design with Parkhill Smith & Cooper, Inc. and survey services with Brittain and Crawford, LLC to prepare the US287 Crossing Sewer Repair for public bidding and construction.
Description/History
An existing 8-inch wastewater gravity main, constructed in approximately 1980, crossing US287 near FM157 in the TXDOT right-of-way is found to be failing after inspection from Public Works Field Operations. CCTV (video inspection) of the existing 8-inch cast iron pipe section shows extreme signs of deterioration from metal corrosion.
This project includes the design for constructing a 12-inch wastewater gravity main to replace the existing section of 8-inch gravity main crossing US287 utilizing pipe bursting, a trenchless technology to burst/break through the existing failing 8-inch pipe with the new 12-inch pipe. This effort is intended to mitigate interruptions to traffic on US287. If pipe bursting technology is determined to not be a preferred or viable option, a new section of 8-inch pipe will be designed for construction parallel to the existing 8-inch failing pipeline with boring-type installation methods considered.
The requested funds are for design with Parkhill Smith & Cooper, Inc. in the amount of $175,800.00 which includes a 5% contingency ($8,420.00) for potential design scope changes, survey services with Brittain and Crawford in the amount of $10,400.00 includes a 10% contingency ($960.00) for potential design scope changes, and purchase of right-of-way, easements and other miscellaneous services in the amount of $12,500.00. To prepare the project for public bidding and construction, the total budget for the project is $198,700.00. Professional Services Contracts are attached. The estimated construction cost is $693,780.00.
Justification
The design of this project is necessary to correct and improve the failing wastewater gravity main.
The Executive Director of Public Works will be in attendance at the meeting to answer Council’s questions regarding the proposed funding and contracts.
Funding Source
Utility Fund.
Prepared By
Luke Goralski, Project Engineer, Engineering Department, 817-276-4234.