RFB954100-01 - Addendum 1.pdf

This is Addendum #1 to the sealed bid request (RFB 954100-01) issued by the Iowa Department of Administrative Services for tunnel infill and site work at the Iowa Correctional Institution for Women (ICIW) in Mitchellville, Iowa. The addendum, dated August 17, 2026, supplements the original bidding documents dated August 14, 2026, and the drawings dated July 22, 2026. The project scope includes removal and replacement of walks and paving, removal of MEP piping and accessories from the tunnel system, demolition of the non-secure area tunnel structure with compacted structural infill, installation of partition cap walls, flowable mortar fill in the secure area tunnel, and grading and landscaping work. Sealed bids are due September 3, 2026, at 2:00 p.m., with an optional pre-bid meeting scheduled for August 20, 2026, at 10:00 a.m. at the project site. Construction is scheduled to begin September 22, 2026, and run through November 30, 2026, with substantial completion targeted by November 30, 2026. The Notice of Intent to Award is anticipated September 4, 2026, with contract negotiation and execution required within fifteen days of award.

The engineer's estimate for the DOC ICIW Tunnel Infill project is $255,860.00. Unit prices are required for twelve line items covering mobilization, filter sock installation, demolition work, fill materials, paving, sidewalk installation, and hydraulic seeding. Bidders must submit 5% bid security in the form of a bid bond, certified check, or cashier's check and hold a current Iowa Contractor Registration Number. All concrete must meet 4,000 PSI strength at 28 days, and work must conform to the 2024 International Building Code and Iowa Statewide Urban Design and Specifications standards. Construction workers require background checks and facility security clearance, and work is restricted to 7:00 a.m. to 5:00 p.m., Monday through Friday, with Saturday work available upon forty-eight hours notice. Iowa sales tax is exempt, and Davis-Bacon wages do not apply to this project.