Refurbishment of Existing On Load Tap Changer at Adobe Creek Substation - AC21

The City of Palo Alto Utilities Department is requesting quotes for refurbishment of an existing on-load tap changer (OLTC) at Adobe Creek Substation, with quotes due November 3, 2026, and a non-mandatory pre-bid conference on October 26 at 10:00 AM via Microsoft Teams. This is a public works project subject to California prevailing wage requirements; bidders must hold a valid California Class A Contractor's License and current Department of Industrial Relations registration.

The scope encompasses refurbishment of the existing TLH-21 load tap changer on an Allis Chalmers 15MVA substation transformer, radiator and flange repair, comprehensive re-gasketing, and oil processing and commissioning. Final testing includes transformer turns ratio, power factor (Doble) testing, and sweep frequency response analysis to verify proper operation. The City will provide de-energization and isolation; the contractor must furnish all labor, equipment, and materials. Bidders must complete a comprehensive questionnaire addressing company information, experience, references, management staff qualifications, equipment availability, and license and registration documentation.

The contract will be awarded to the lowest responsive and responsible bidder based on a lump-sum price comprising two line items: manpower and equipment for the specified work, and the refurbished TLH-21 LTC and associated components. Contract value is not stated. If the contract sum exceeds $25,000, performance and payment surety bonds equal to 100 percent of the contract price are required within ten business days of award. Liquidated damages are assessed at $500 per day for delays. The contract term may extend up to three years with provisions for termination without cause upon ten days' written notice.

Insurance requirements mandate minimum general liability, automobile liability, and workers' compensation coverage of $1,000,000 per occurrence from California-licensed carriers with AM Best's rating of A-:VII or higher. The City must be named as additional insured on all policies except workers' compensation and employer's liability. Questions are due October 27 at 1:00 PM. All bidders must submit through the City's OpenGov electronic procurement portal.