Request for Proposals

Digester #1 Structural Repair Project

The Digester #1 Structural Repair Project includes, but is not limited to, relief of prestressing forces and demolition of an existing partially failed concrete digester prestressing dome edge ring; design, installation, and application of prestressing forces for a new shotcrete encased prestressing system; modification and restoration of existing supernatant box, structural elements, piping, conduit, and other appurtenances disturbed as necessary to complete the work; miscellaneous coating, sealing, and waterproofing repairs and restoration; and other work within the Fairfield-Suisun Sewer District’s Wastewater Treatment Plant.

Bid Date: Thursday, June 15, 2023 at 2:00 pm
Pre-Bid Visit to Work Site: Thursday, Junes 1, 2023 at 2:00 pm
Engineer’s Estimate: $750,000
Project Manager: Karl Ono, Senior Engineer
See NIB for more information.

Aeration Basin Improvements for Nitrogen Removal Preliminary Design Report & Design Services

Fairfield-Suisun Sewer District (District) is requesting proposals from qualified firms to prepare a Preliminary Design Report that studies, develops alternative design concepts and phasing recommendations, and estimates costs for improvements to the District’s Aeration Basins. The selected consultant’s work will be used to select the preferred project, determine future project phasing, and then move into the design of the initial phase(s) of the improvements. The initial deliverable will be a Preliminary Design Report. The firm selected to complete the Preliminary Design Report as part of this competitive pursuit, at the District’s discretion, may be awarded the design of the improvements and the future phase(s) of the project.

Bid Date: May 22, 2023 at 5:00 pm
Project Manager: Kyle Broughton, Senior Engineer
See RFP for more information.