SAMPLE-PSA_CONTRACTOR.docx

This is a sealed bid solicitation document for Winnebago County, Wisconsin, for the replacement of the chiller system at Wittman Airport's control tower. The project requires contractors to provide all necessary labor, equipment, and materials to remove the existing chiller (CH-1) and install a new chiller (CH-001) with a 33.3 kW capacity featuring four compressors, along with associated electrical and mechanical system modifications. A mandatory pre-bid meeting is scheduled for November 18, 2025, at 10:00 am at Gate #33, with sealed bids due on December 2, 2025, at 3:00 pm Central Time through the County's OpenGov Procurement portal. Contractors must submit a bid bond equal to 5% of the total bid amount, and all bids must remain valid for 60 calendar days from submission.

Evaluation will be based on compliance with technical specifications outlined in the 23WINN03.00_BD_SPEC.pdf document, which covers materials, installation methods, system testing, and performance standards. Contractors must provide comprehensive insurance coverage including Workers' Compensation ($100,000 per accident), Commercial General Liability ($1,000,000 per occurrence), and Automobile Liability ($1,000,000 per occurrence), along with a Certificate of Insurance and a Public Improvement Performance/Labor and Material Payment Bond. Winnebago County will retain 5% from each partial payment until project completion reaches 50%, with invoices processed net 30 days. The county maintains tax-exempt status for purchased materials. No specific set-aside designations for disadvantaged enterprises are indicated, and no incumbent vendors have been identified. The project requires integration with existing airport infrastructure, specifically electrical systems in control tower rooms 110, 111, and 114.