Cal883301A & Cal883220A Nutrient Reduction Wetlands

The Iowa Department of Agriculture & Land Stewardship, Division of Soil Conservation and Water Quality is soliciting bids for the 2025 N. Raccoon River Watershed Batch and Build project, specifically seeking a single contractor to construct two nutrient reduction wetlands in Calhoun County, Iowa. The two distinct projects, designated as Cal883301A and Cal883220A, require comprehensive wetland construction services involving significant earthwork, tile installation, and environmental restoration. Project Cal883301A involves approximately 15,752 cubic yards of earthwork, 1,217 linear feet of tile installation, road surface replacement, riprap placement, and seeding, utilizing a solar-powered pump to receive water from an existing tile. Project Cal883220A involves approximately 1,775 cubic yards of earthwork, 172 linear feet of tile installation, concrete block mat placement, and seeding, receiving water from a drainage ditch. Bids must be submitted through the Iowa Management of Procurement and Contracts System (IMPACS) by 3:00 PM on October 8, 2025, with a mandatory 10% bid bond. A pre-bid conference is scheduled for September 23, 2025, at the Calhoun County Extension Service, and the project engineer is JEO Consulting Group, Inc.

Bidders must be registered with the Iowa Department of Inspections, Appeals & Licensing and non-Iowa corporations must provide proof of authorization to do business in the state prior to contract execution. The successful contractor will be required to furnish a Performance/Payment Bond for 100% of the contract price. The estimated construction cost for Cal883301A ranges between $300,000 and $400,000, while Cal883220A is estimated between $200,000 and $260,000, representing a total potential contract value of $500,000 to $660,000. The Division reserves the right to reject any or all proposals and to waive technicalities and irregularities. While no specific set-aside designations for disadvantaged enterprises are mentioned, standard state procurement practices typically encourage diverse vendor participation. The procurement is structured as a comprehensive environmental infrastructure project aimed at nutrient reduction and watershed management in the N. Raccoon River region.