Substation Construction Services For Equipment Replacement Programs

The Imperial Irrigation District is soliciting qualified contractors to provide comprehensive substation equipment replacement services across its service area in Imperial, California, under solicitation number 20260710011. The scope encompasses the full replacement of critical electrical infrastructure including power transformers, circuit breakers, disconnect switches, capacitor banks, regulators, underground conduits, conductors, and insulators, along with associated civil work, structural installations, grounding systems, and the testing and commissioning of newly installed equipment. All work must be executed based on engineered job packages provided by IID, which will also supply major materials, while the contractor is responsible for labor, supervision, tools, test equipment, transportation, and consumables. Specific tasks, such as the installation of a 15 KV 1200A circuit breaker using Hilt bolts, 4/0 copper grounding with cad-welded connections, and burial at 18 to 20 inches depth, are outlined in detailed technical specifications. Proposals must be submitted in sealed hardcopy form, including one original and six duplicates, plus one digital copy on CD, DVD, or USB, with all submissions clearly marked with the solicitation number and delivered to the designated Imperial, CA addresses by the August 12, 2026 deadline. Contract compliance is governed by a series of internally defined clauses rather than standard FAR provisions, with key obligations including a one-year warranty following final completion, mandatory adherence to California prevailing wage laws under Labor Code §1720 et seq., and the requirement to submit certified payroll documentation with the final invoice. Contractors must register with the California Department of Industrial Relations prior to bid submission and are prohibited from subcontracting without prior written approval. The contract mandates comprehensive insurance coverage including general liability, automobile liability, and workers’ compensation with carrier ratings meeting “A-:VII” from Best’s Guide, and requires all operations to comply with on-site conduct rules such as the prohibition of alcohol, firearms, and illegal drugs. Inspections occur continuously during work progression and culminate in site-based final acceptance upon submission of a Notice of Completion. Invoices must be submitted in PDF format to accounts payable via email or mail, referencing the required service agreement number format 810000XXXX, and the Contract Administrator serves as the sole point of contact for technical, administrative, and payment matters. No contract value is disclosed, and no evaluation factors or weighting criteria are specified, though compliance with all mandatory provisions, including the submission of