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Home » Inflow and Infiltration Improvement Project - City of Winlock

Inflow and Infiltration Improvement Project - City of Winlock




ENGINEER’S ESTIMATE $3,700,000 to $4,000,000

Sealed Proposals will be received by the undersigned at the City of Winlock, City Hall, 323 NE First Street, Winlock, Washington 98596, up to 11:00 a.m.; local time on Thursday, November 16, 2017, for furnishing the necessary labor, materials, equipment, tools, and guarantees thereof to construct Inflow and Infiltration Improvement Project.

Schedule A of this project includes the construction of new sewer main and side sewers on SW Mayer Street and SW Campbell. Additional work includes manhole rehabilitation and the installation of cured in place pipe and side sewers on: Kerron Avenue between West Walnut street and Olequa Creek; NW Laurel Avenue; NW Mill Avenue; NE Front Street; NE Rhodes Street; NE Jabez Street; portions of NW Mill Avenue; portions of NW King Street; Shannon Lewis Lane, NW Fir Street; NW Clark Avenue and NW Grant Avenue as shown on the plans. Work also includes the installation of new side sewers at other locations, as shown on the plans, not associated with cured in place pipe installation.

Schedule B of this project includes the rehabilitation of the Membrane Biological Reactor Treatment Trains of the wastewater treatment facility with new equipment and instrumentation in addition to modifications to the process basins and piping including revised permeate piping, new sluice gates in the preaeration basins, new sluice gates in the MBR basins, new stop gates and weir plates between the preaeration basins and the MBR basins to improve flow splitting and new 8-inch basin transfer piping to assist in taking the treatment trains on and off line. The project also includes the replacement of the existing facility wide PLC/HMI hardware and software, and software programing and a new trolley hoist to provide access to the membranes for maintenance and repair.

The Work shall be physically complete within 240 working days after the commencement date stated in the Notice to Proceed. All bidding and construction is to be performed in compliance with the Contract Provisions and Contract Plans for this project and any addenda issued thereto that are on file at the office of the City Clerk, City Hall, Winlock, Washington.

The Proposals will be publicly opened and read aloud shortly after the time and date stated above. Proposals are to be submitted only on the form provided with the Bid Documents. All Proposals must be accompanied by a certified check, cashiers check, money order, or bid bond payable to the “City of Winlock” and in an amount of not less than five percent (5%) of the total amount bid.

Bid Documents may be examined at the office of the City of Winlock, or the office of the Project Engineer, Gray & Osborne, Inc. Bid Documents for this project are available free-of-charge at the following website: “”. Bidders are encouraged to “Register” in order to receive automatic email notification of future addenda and to be placed on the “Bidders List”. For assistance, please call (206) 284‑0860. Contract questions shall be directed only to the office of the Project Engineer.

A Prebid Conference is scheduled for Thursday, November 2, 2017. The conference will begin at the City of Winlock, City Hall, 323 NE First Street, Winlock, Washington 98596 at 9:00 a.m. (local time). Prospective bidders are encouraged to participate. Any other site visits shall be limited to 8:00 a.m. to 4:00 p.m., Monday through Friday, and shall be coordinated through Rodney Cecil, of the City of Winlock, by calling (360) 520-5589, at least 24 hours in advance of the visit. No unauthorized visits or unscheduled visits will be allowed.

Financing of the Project has been provided by City of Winlock, Washington, the State of Washington Department of Ecology and the Washington State Department of Commerce. The City of Winlock expressly reserves the right to reject any or all Proposals and to waive minor irregularities or informalities and to Award the Project to the lowest responsive, responsible bidder as it best serves the interests of the City. Neither the State of Washington nor any of its departments or employees are, or shall be, a party to any contract or any subcontract resulting from this solicitation for bids.

The City of Winlock is an equal opportunity and affirmative action employer. Small, minority- and women-owned businesses are encouraged to submit bids. All work performed on the project will be subject to the higher of prevailing state or federal Davis-Bacon wage rates. This project is partially funded through the Washington State Community Development Block Grant program with federal funds from the U.S. Department of Housing and Urban Development.

The successful bidder will be required to conform to the wage requirements prescribed by the federal Davis-Bacon and Related Acts which requires that all laborers and mechanics employed by contractors and subcontractors performing on contracts funded in whole or in part by SRF appropriations in excess of $2,000 pay their laborers and mechanics not less than the prevailing wage rates and fringe benefits, and determined by the Secretary of Labor, for corresponding classes of laborers and mechanics employed on similar projects in the area.

theda curry


Closing Date: 
Thursday, November 16, 2017