Sioux City Mat Lab HVAC Updates

Background
The Iowa Department of Transportation (DOT) is seeking competitive bids for HVAC updates at the Sioux City Material Lab. The goal of this contract is to enhance the HVAC system while ensuring minimal disruption to the ongoing operations of the lab, which will remain occupied during construction.

Work Details
The work includes:
1) Removal and replacement of make-up air units serving the lab spaces;
2) Removal and replacement of 5 exhaust fans with revised controls for negative lab pressurization requirements;
3) Addition of 1 new exhaust fan for negative lab pressurization;
4) Replacement of motorized dampers with insulated low leakage dampers;
5) Addition of a new exhaust hood over the manual splitter in the shaker room to control dust;
6) Removal and replacement of 3 VAV boxes to increase heating capacity;
7) Building envelope modifications to add spray foam insulation above the ceiling between the loading dock and HMA lab.

Period of Performance
The estimated start date for the contract is July 1, 2025, with substantial completion expected within 255 calendar days from the Notice to Proceed.

Place of Performance
6409 Gordon Dr., Sioux City, IA 51106.

Bidder Requirements
Contractors must comply with Iowa Administrative Code procedures. The bidding process requires that all items are tied, meaning contractors must respond to both lines on the items tab. Additionally, bidders are encouraged to attend a pre-bid meeting; site visits are highly recommended.