Gre853019D 25-16

The Iowa Department of Agriculture & Land Stewardship, Division of Soil Conservation and Water Quality, is soliciting bids for the Gre853019D 25-16 Nutrient Reduction Wetland Project located in Greene County. The project involves comprehensive environmental infrastructure work, including selective clearing, excavation, grading, tile and outlet structure installation, riprap placement, and seeding across a 255-acre watershed. Specific project deliverables include approximately 21,658 cubic yards of earthwork, 533 linear feet of tile installation, two concrete manhole structures, two outlet riser structures, 21.5 tons of riprap, and 1.8 acres of seeding. The bid documents require contractors to be registered with the Iowa Department of Inspections, Appeals & Licensing and submit a 10% bid bond. A pre-bid conference is scheduled for October 9, 2025, at 9:30 AM in Jefferson, Iowa, with sealed bids due through the Iowa Management of Procurement and Contracts System (IMPACS) by October 28, 2025, at 3:00 PM CDT. The project has two primary completion deadlines: June 15, 2026, for most construction work and June 30, 2026, for seeding-related activities.

The procurement does not explicitly indicate specific set-aside designations or restrictions for disadvantaged enterprises. Bidders must provide performance and payment bonds for 100% of the contract price and maintain specific insurance coverages. The estimated construction cost range is $120,000 to $150,000, with liquidated damages of $175 per day for main construction delays and $125 per day for seeding-related delays. The project will be awarded to the lowest responsible bidder, with contractors required to demonstrate qualifications including years in business, equipment ownership, performance records, and current project commitments. The wetland project is designed to reduce nutrient runoff, with specific hydraulic characteristics including a 1.5-acre pool area, a normal water level at 1076.00 feet, and an average pool depth of 0.96 feet. The drainage tile system will be improved to increase water flow capacity from 0.78 to 2.02 cubic feet per second, supporting broader nutrient reduction strategies in the agricultural landscape.