Unofficial Notice of Invitation to Bid (NIB)

Vallejo Flood and Wastewater District is seeking bids from qualified and interested contractors for the following project titled, North Secondary Clarifier Rehabilitation Project, identified under Solicitation ID: PSC017. Work is to be performed near 450 Ryder St, Vallejo, CA 94590, USA in Solano County.

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General Project Description

This project involves the rehabilitation of the North Secondary Clarifier at the Vallejo Flood and Wastewater District Wastewater Treatment Plant. The scope includes miscellaneous mechanical rehabilitation, interior concrete repairs (surface crack, epoxy crack, waterproof injection crack, surface spall, formed spall, contraction/construction joint repair), clarifier drive replacement, piping and valve replacement (scum wet well piping, clarifier drain valve), launder cover replacement (fiberglass to aluminum), structural repairs (catwalk bearing plate, anchoring), sandblasting/painting of catwalk and interior metal components, and replacement of the existing impressed current cathodic protection system with a new passive galvanic anode cathodic protection system. It also covers general construction, demolition, formwork, reinforcing steel, cast-in-place concrete, concrete finishes, grouting, galvanizing, metal fastening, metal fabrications, metal stairs, ladders, guards and railings, gratings/checkered floor plates/access doors, stair treads and nosings, bearing devices and anchoring, glass fiber and resin fabrications (FRP ductwork), thermal and moisture protection (joint fillers, sealants, caulking), existing conditions assessment, earthwork (flowable fill, surface restoration, final grading, landscaping), process interconnections (mechanical requirements, ductile iron pipe, PVC/CPVC pipe, valves, valve operators, ball valves, piping/equipment identification systems, process control system provisions, testing, field testing), and process gas/liquid handling/purification/storage equipment (pumps, submersible chopper pumps), water and wastewater equipment. Owner-furnished equipment includes a new dual gate energy dissipating unit (EDI), a new 40' diameter x 9' depth clarifier centerwell, and a new clarifier drive.

General Bid Items

Quantity: 1 Unit: LS Work Item: General construction of the Project complete as specified and shown, excluding all work listed in other bid items.
Quantity: - Unit: LF Work Item: Surface Crack Repair. Specifications: Based on Contractor's inspection, quantity agreed upon with the Engineer.
Quantity: - Unit: LF Work Item: Epoxy Crack Repair. Specifications: Based on Contractor's inspection, quantity agreed upon with the Engineer.
Quantity: - Unit: LF Work Item: Waterproof Injection Crack Repair. Specifications: Based on Contractor's inspection, quantity agreed upon with the Engineer.
Quantity: 15400 Unit: SF Work Item: Surface Spall Repair. Specifications: (One-inch Deep or Less).
Quantity: 1 Unit: CF Work Item: Formed Spall Repair. Specifications: (Greater than Four-inch Deep).
Quantity: - Unit: LF Work Item: Contraction or Construction Joint Repair. Specifications: Based on Contractor's inspection, quantity agreed upon with the Engineer.
Quantity: 450 Unit: EA Work Item: Anchor Removal and Burn Back. Specifications: Based on Contractor's inspection, quantity agreed upon with the Engineer.
Quantity: 1 Unit: LS Work Item: Mobilization, Demobilization. Specifications: Limited to a maximum amount of ten (10) percent of the Bid Price; five (5) percent each for mobilization and demobilization.

NAICS Classification

NAICS 237110 – Water and Sewer Line and Related Structures Construction (Piping and valve replacement, scum wet well piping, valves, clarifier drain valve, process interconnections, ductile iron pipe, PVC/CPVC pipe, submersible chopper pumps, cathodic protection system installation)., NAICS 237310 – Highway, Street, and Bridge Construction (Asphalt and concrete paving removal, repair, replacement related to site restoration, utility potholing and trenching (if applicable for external work).), NAICS 238110 – Poured Concrete Foundation and Structure Contractors (Interior concrete repairs, concrete repairs within clarifier, formed spall repair, cast-in-place concrete, concrete formwork, concrete accessories)., NAICS 238120 – Structural Steel and Precast Concrete Contractors (Structural repairs, metal stairs, ladders, guards and railings, gratings, checkered floor plates, access doors, stair treads and nosings, bearing devices and anchoring)., NAICS 238210 – Electrical Contractors and Other Wiring Installation Contractors (Installation of wire and conduit, replacement of existing impressed current cathodic protection system with a new passive galvanic anode cathodic protection system, electrical components, low-voltage conductors and cables, grounding and bonding for electrical systems, conduit for electrical systems, boxes for electrical systems, identification for electrical systems, low-voltage electric motors, wiring devices, enclosed switches)., NAICS 238220 – Plumbing, Heating, and Air-Conditioning Contractors (Piping and valve replacement, sludge header and collector arms, scum wet well piping, valves, pump replacement, clarifier drain valve, process interconnections, Ductile Iron Pipe, PVC/CPVC Pipe)., NAICS 238320 – Painting and Wall Covering Contractors (Sandblasting/painting of catwalk and interior metal components, painting services for metal and concrete surfaces)., NAICS 238910 – Site Preparation Contractors (Demolition, final grading and landscaping, preparation for resurfacing)., NAICS 541330 – Engineering Services (Design review and oversight for various structural, mechanical, electrical, and process control elements).

Records and Due Date

This bid opportunity was entered into BidAmerica on February 24, 2026, and was last updated on February 24, 2026. All bids and/or proposals are due on March 24, 2026.

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Legal Disclaimer

All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by Vallejo Flood and Wastewater District. BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from Vallejo Flood and Wastewater District prior to bidding.