WRRF West Substation Transformer Repair

The City of Hayward is requesting quotations for repair of the West Substation Transformer at the Water Resource Recovery Facility, with electronic submissions due October 28, 2026 at 12:00 p.m. through the OpenGov Procurement portal. Questions are due October 15, 2026, with responses due October 21, 2026.

The scope covers complete repair and restoration of an existing Square D Schneider Electric transformer (S/N 20261134-011-01) serving the recycled water system and wastewater treatment processes. Work includes replacing windings with new copper windings, installing new insulation materials, supplying approximately 466 gallons of new Envirotemp FR3 dielectric fluid, applying light-gray paint finish, and performing comprehensive testing and commissioning. All-inclusive pricing must cover removal, transportation, repair, delivery, installation, startup, and required insurances. Work must be completed within 20 weeks of purchase order issuance, with a minimum one-year warranty on parts and workmanship from date of acceptance.

Contractors must hold a valid California C-10 Electrical Contractor license and demonstrate at least five years of documented experience performing comparable repair and rewinding work on liquid-filled power transformers of similar voltage class and industrial service conditions. Proof of capacity to handle an 11,320-pound transformer is required. Bidders must submit three references from similar projects completed within the past five years, qualifications and location of repair facility, descriptions of testing equipment and quality-control procedures, and an estimated project timeline.

Insurance requirements include Commercial General Liability, Automobile Liability, Workers' Compensation and Employer's Liability, and Professional Liability coverage. A valid City of Hayward business license is required upon award. Prevailing wage compliance under California Labor Code Sections 1771 and 1777.5 applies, along with nondiscriminatory employment practices certification. Mandatory forms include a Noncollusion Affidavit and Affirmation of Non-Involvement in Development or Production of Nuclear Weapons. Work is performed at 3700 Enterprise Avenue, Hayward, California.