KA5_blowers.pdf

This is a technical specification document for the Kenton County Airport Board's aeration equipment procurement project. The project involves the design and furnishing of coarse bubble aeration systems to replace existing fine bubbler equipment in two digester tanks at Cincinnati/Northern Kentucky International Airport (ITB #26-026). The procurement requires complete aeration systems including coarse bubble diffusers, diffuser mounting assemblies, air distribution manifolds constructed of Type 304 stainless steel, drop pipes, fittings, supports, and connection components for both tanks, with an optional alternate for contractor-provided installation services. A mandatory pre-bid meeting and site visit is scheduled for Thursday, April 23, 2026 at 10:00 am at CVG Centre Administrative Offices, 77 Comair Boulevard, Erlanger, Kentucky 41018. Written questions must be submitted by 11:59 pm on Monday, April 27, 2026, with responses posted no later than 11:59 pm on Thursday, April 30, 2026. Sealed bids are due by Thursday, May 7, 2026 at 2:00 pm Eastern Time through KCAB's online bidding portal, with the anticipated board approval date of May 26, 2026 and construction completion targeted for November 1, 2026. Equipment manufacturers must demonstrate a minimum of five years of documented experience producing similar coarse bubble aeration systems and provide proven performance through at least three installations of similar size and application.

The project is federally funded subject to FAA requirements with a total appropriations request of $639,000.00, comprising $551,000.00 for equipment costs and $88,000.00 for construction and installation costs including a 20 percent vendor contingency. Pricing must be firm fixed, all-inclusive, and delivered FOB Cincinnati/Northern Kentucky International Airport, with equipment delivery required within 24 weeks of design approval and liquidated damages of 1 percent of the purchase price per day of delay. Bidders must submit a bid bond equal to 10 percent of the proposed contract amount, a performance bond of 100 percent of the contract amount, and a payment bond of 100 percent of the contract amount from surety companies rated at least "A" by Best Insurance Reports and authorized to do business in Kentucky. The project mandates compliance with multiple federal regulations including Buy American preferences, Disadvantaged Business Enterprise (DBE) participation goals, Davis-Bacon prevailing wage requirements if installation services are included, Executive Order 11246 affirmative action requirements, Title VI civil rights compliance, and drug-free workplace provisions. All bidders and subcontractors must submit comprehensive safety documentation including DART rates, Workers' Compensation Experience Modification Rates, OSHA 300 logs, and documentation of any serious or willful OSHA violations. Bids must remain valid for a minimum of 120 days from the closing date.