22-40 BID- North and South Reservoir Improvements

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City of Mercer Island

Project Title: North and South Reservoir Improvements
Bid Number: 22-40, Project Number WU0103
Engineers Estimated Cost (range): $5.0 M to $5.8 M

Sealed bids will be received, not sent, electronically by the city until 10:00 AM on December 20, 2022. Bidders shall submit their bids in PDF format to the Public Works email address at publicworks@mercerisland.gov. There will be no public bid opening for this project; bid results will be posted on the City’s webpage at: https://www.mercerisland.gov/rfps.

Work to be performed under this contract includes the coatings and other improvements at two existing 4.0-million-gallon steel drinking water storage tanks, the North Tank, constructed in 1962, and the South Tank, constructed in 1975. Both tanks have a diameter of 148 feet and a height of 32 feet. The roof of each tank is supported by columns, rafters, and beams. The work includes but is not limited to:
Interior seal welding at the tank roof,
• Interior blasting and recoating,
• Replacement of the tanks’ cathodic protection systems,
• Exterior spiral stairs additions,
• Full exterior containment,
• Exterior preparation and overcoating, with underlying lead-based coatings to remain mostly undisturbed, and
• Other improvements as described in the plans and specifications.
A single contract is to be awarded to the responsible bidder submitting the lowest responsive bid. The City reserves the right to reject any and all bids and to waive minor irregularities. See Specifications Division 9 - Finishes for Coatings Applicator Qualifications.
The work must be completed in two separate phases. The City has two water storage tanks in all, both of which are to be improved and recoated as part of this project. To provide adequate supply to its customers while simultaneously having adequate fire flow storage available, at least one tank must be in service at all times, and both must be in service from May 15 to October 15 annually. See Specification Section 1.32.13 for more information on scheduling.
Plans, specifications, addenda, and bidders list are available on-line through Builders Exchange of Washington, Inc. at http://www.bxwa.com. Click on “Posted Projects”, “Public Works”, “City of Mercer Island”, “Projects Bidding”. Builders Exchange manages the official bidders list. Bidders are encouraged to register in order to receive automatic email notification of future addenda and to be placed on the official bidders list.
Plans and specifications are also available at the City of Mercer Island website https://www.mercerisland.gov/rfps. Addenda may not be available or updated on this website.
A bid deposit in the amount of five percent (5%) of the bid total price must accompany each bid.