Cla953734C 26-11 (Clay)

The Iowa Department of Agriculture and Land Stewardship is soliciting sealed bids for the design‑build construction of a traditional breakpoint nutrient‑reduction wetland in Clay County. The contractor will be responsible for site clearing, excavation, grading, installation of steel sheet‑piles, HDPE tile, reinforced concrete pipe, a water‑control structure, rip‑rap placement, concrete grout, and seeding of approximately 15.2 acres. The work must be started within seven days of the pre‑construction meeting and completed by 15 Nov 2027, with seeding completed by 15 Dec 2027. The bid must include a 10 % bid bond and the successful bidder must provide a performance bond equal to 100 % of the contract price. • Scope includes earthwork (~15,200 cu yd), steel sheet‑pile (2,523 sf), HDPE tile (540 lf), reinforced concrete pipe (≈1,100 lf total), rip‑rap (303 tons), and seeding (15.2 ac). • Estimated construction cost range $450,000 – $550,000; liquidated damages $175/day (non‑seeding) and $125/day (seeding). • Mandatory registrations: Iowa Department of Inspections, Appeals & Licensing; bidder must be registered in IMPACS and provide required certifications and documentation.