Unofficial Notice of Invitation to Bid (NIB)

Union Sanitary District is seeking bids from qualified and interested contractors for the following project titled, SWITCHBOARD NO. 3 AND MOTOR CONTROL CENTER NO. 25 REPLACEMENT PROJECT, identified under Solicitation ID: 800-564. Work is to be performed near 5072 Benson Rd, Union City, CA 94587, USA in Alameda County.

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General Project Description

This project involves the electrical power modification and replacement at the Alvardo Wastewater Treatment Plant. The scope includes the demolition and replacement of existing 480V Switchboard No. 3 (SWBD-3) and Motor Control Center No. 25 (MCC-25) located in the Main Electrical Building (Building No. 78). Work further entails de-energization, disconnection, off-haul, and disposal of existing equipment; modifications to the existing electrical busway duct; installation of temporary electrical panelboards and cables; assembly and installation of new District-furnished SWBD-3 and MCC-25; re-termination of wiring; and comprehensive electrical testing. Additionally, the project includes the re-feed of 480V power from SWBD-3 to MCC No. 30 in the Cogeneration Building (Building No. 90), requiring the construction of a new underground electrical duct bank, asphalt pavement restoration, installation of aboveground conduits, termination of new wiring, and demolition of existing wiring. Provisions for all necessary shoring and bracing for excavations, adhering to Labor Code requirements, are also included.

General Bid Items

Quantity: 1 Unit: LS Work Item: Completion of all Work included as part of the Contract Documents for Project No. 800-564, except as specified in Bid Items 2 through 5.
Quantity: 1 Unit: LS Work Item: Completion of all work included as part of the Contract Documents for the replacement of Switchboard No. 3. Specifications: Includes de-energization, disconnection of wiring/cabling, off-haul and disposal of existing SWBD-3, modifications to existing electrical busway duct, assembly and installation of temporary electrical panelboards and cables, installation of new SWBD-3 (District-furnished), re-termination of wiring/cabling, re-energization of new SWBD-3, and electrical testing.
Quantity: 1 Unit: LS Work Item: Completion of all work included as part of the Contract Documents for the replacement of Motor Control Center No. 25. Specifications: Includes de-energization, disconnection of wiring, off-haul and disposal of existing MCC-25, installation of temporary electrical panelboards and cables, installation of temporary control panels, assembly and installation of new MCC-25 (District-furnished), re-termination of all wiring, re-energization of new MCC-25, and electrical testing.
Quantity: 1 Unit: LS Work Item: Completion of all work included as part of the Contract Documents for the re-feed of primary power for Motor Control Center No. 30 located in the Cogeneration Building. Specifications: Includes construction of a new underground electrical duct bank, asphalt pavement restoration, installation of aboveground conduits, installation and termination of new wiring, and demolition of existing wiring.
Quantity: 1 Unit: LS Work Item: Cost for providing all shoring and bracing on all Bid Items above including but not limited to that as required by Sections 6700-6708 of the Labor Code.
Quantity: Add Unit: LS Work Item: Bid Alternate A: Builder’s Risk Insurance coverage described in Section 00800 - Article 2.1.3a.

NAICS Classification

237130 – Power and Communication Line and Related Structures Construction, 238210 – Electrical Contractors and Other Wiring Installation Contractors, 238910 – Site Preparation Contractors, 237990 – Other Heavy and Civil Engineering Construction

Records and Due Date

This bid opportunity was entered into BidAmerica on December 4, 2025, and was last updated on January 13, 2026. All bids and/or proposals are due on January 15, 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 Union Sanitary 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 Union Sanitary District prior to bidding.