Concrete Greenhouse Floors in Prosser, WA

The Department of Agriculture Agricultural Research Service seeks concrete greenhouse floor replacement across multiple buildings at its Prosser, Washington research station, with quotations due June 10, 2026 and questions due June 3, 2026. This procurement is set-aside for HUBZone small businesses and is issued as a combined synopsis/solicitation under FAR Part 12 for commercial items.

Place of performance is Prosser, Washington (24106 N. Bunn Road, with delivery to 5230 Konnowac Pass Road, Wapato, Washington 98951). The work mitigates contamination from Spongospora subterranea, a persistent soil pathogen vectoring Potato mop-top disease, by replacing contaminated rock beds and soil beneath greenhouse benches with cement flooring and proper drainage systems. Scope spans five greenhouse sections across three buildings: Building 101 (Sections A and B with vinyl trench drains at 27 linear feet each and 4-inch concrete); Building 102 (Sections H, I, and J with vinyl gutter and trench drain installation); and Building 112 (gravel removal with concrete placement sloped toward existing sidewalk). Work also includes removal and reinstallation of existing tables, excavation, gravel base placement and compaction, rebar dowel installation, formwork, concrete finishing with light broom finish, floor drain installation (except Building 112), and site restoration. Building 102J requires sidewalk demolition (3 feet 3 inches by 57 feet).

The NAICS code is 238110, Poured Concrete Foundation and Structure Contractors, with a small business size standard of $19 million. Performance period is 120 calendar days after award with 0 days to mobilization. Davis-Bacon prevailing wage rates apply per Yakima County, Washington wage determination effective May 18, 2026. Performance and payment bonds are required; bid guarantee (SF 24) must be not less than 20 percent of proposed price but not exceeding $50,000. Evaluation uses Lowest Priced Technically Acceptable methodology; offerors must submit two recent relevant references demonstrating similar experience and provide CPARS performance data. All offerors must be registered in SAM.gov with active registration at quote submission.