KA10_Blowers.pdf

This is a specification document for coarse bubble aeration equipment being procured by the Kenton County Airport Board (KCAB) for Cincinnati/Northern Kentucky International Airport. The project involves the design and furnishing of coarse bubbler aeration systems to replace existing fine bubbler equipment in two digester tanks, including coarse bubble diffusers, diffuser mounting assemblies, air distribution manifolds constructed of Type 304 stainless steel, drop pipes, fittings, supports, and connection components. Equipment manufacturers must demonstrate a minimum of five years of documented experience producing similar coarse bubble aeration systems for industrial or municipal wastewater applications and provide proof of at least three installations of comparable size and application. 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 no later than Thursday, May 7, 2026 at 2:00 pm Eastern Time through KCAB's online bidding portal, with board approval anticipated for May 26, 2026 and construction completion targeted for November 1, 2026. Equipment delivery is required within 24 weeks of design approval, with liquidated damages assessed at 1 percent of the purchase price per day of delay.

The total appropriations request is $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, with pricing required to be firm fixed, all-inclusive, and delivered FOB Cincinnati/Northern Kentucky International Airport. This federally funded project is subject to FAA requirements and 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. 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, all obtained from a surety company rated at least "A" by Best Insurance Reports and authorized to do business in Kentucky. Bids must remain valid for a minimum of 120 days from the closing date. 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.