KOS972821A (26-01)

The Iowa Department of Agriculture and Land Stewardship is procuring a traditional “breakpoint” nutrient‑reduction wetland in Kossuth County. The project involves extensive earthwork, steel sheet‑pile installation, drainage tile work, a 48‑inch aluminum water‑control structure, rip‑rap placement, concrete grout, and seeding of both structural and buffer areas. The work must be completed by 31 Dec 2026 (all construction) with seeding extending to 15 May 2027 and 30 Jun 2027. The bid is a Request for Bids (RFB) with a 10 % bid bond and a 100 % performance bond requirement. Key points: • Scope includes clearing, excavation (~12,900 CY), sheet‑pile (1,444 SF), tile installation (515 LF), water‑control structure, rip‑rap (548 T), concrete grout (108 CY), and 17 acres of seeding. • Estimated construction cost $350‑$450 k; bid bond 10 % of bid, performance bond 100 % of award. • Mandatory pre‑bid conference (23 Apr 2026) and pre‑construction meeting; construction cannot begin before 1 Aug 2026. • Bid deadline 20 May 2026, public opening same day via IMPACS and Microsoft Teams. • Contractor must be registered with Iowa Department of Inspections, Appeals & Licensing and provide required bonds and insurance.