26-09 Har892022C (Hardin)

The State of Iowa, through the Department of Agriculture and Land Stewardship, is soliciting bids for the design‑build of a Tile Zone nutrient‑reduction wetland in Hardin County. The contractor will perform site clearing, subsurface tile investigation and removal, extensive excavation and grading, installation of reinforced concrete and HDPE dual‑wall pipe systems, construction of a concrete water‑control structure, and subsequent seeding (buffer and structural) to meet NRCS standards. The project’s estimated construction cost is $200‑$300 K, with construction slated to begin June 15 2027 and final seeding completed by September 15 2027.