Mah751636C 25-15

The Iowa Department of Agriculture and Land Stewardship, specifically the Division of Soil Conservation and Water Quality, is soliciting bids for the Mah751636C Nutrient Reduction Wetland Project located in Mahaska County, Iowa. The project involves constructing a traditional breakpoint nutrient reduction wetland with comprehensive site preparation and infrastructure development. Key deliverables include selective clearing, excavation, grading, riser outlet installation, tile and outlet structures construction, riprap placement, and seeding across approximately 6.6 acres. The project scope encompasses approximately 24,926 cubic yards of earthwork, 368 linear feet of tile installation, concrete and nyloplast structures, 310 tons of riprap, and 25 cubic yards of grout. Bid submissions are due on October 28, 2025, at 3:00 PM via the IMPACS online bidding system, with a pre-bid conference scheduled for October 7, 2025, at the Oskaloosa Library. Contractors must be registered with the Iowa Department of Inspections, Appeals & Licensing and submit a 10% bid bond. The project has specific completion dates: construction work (except seeding) must be completed by November 15, 2026, and seeding by December 15, 2026.

Contractors must provide evidence of financial data, previous experience, equipment ownership, and performance records. While no specific set-aside designations for disadvantaged enterprises were explicitly mentioned, the bid requires non-Iowa corporations to provide proof of authorization to do business in the state prior to contract execution. The estimated construction cost range is $250,000 to $350,000, with liquidated damages of $175 per day for delays in the main work phase and $125 per day for seeding delays. The successful bidder will be required to execute a performance bond of 100% of the contract award within 14 days of receiving the Notice-of-Award, which will remain in effect for one year following final acceptance. Materials purchased for this project are exempt from sales and use taxes, and contractors will be issued a specific sales tax exemption certificate. The project is designed with a comprehensive nutrient reduction strategy, featuring a water control structure, principal spillway, drawdown structure, and drainage tile modifications, with a total drainage area of 181 acres and a wetland pool area of 1.99 acres.