26-10 Car833409A (Carroll)

The Iowa Department of Agriculture & Land Stewardship, Division of Soil Conservation and Water Quality is requesting bids for construction of a nutrient reduction wetland in Carroll County to treat water from an existing ditch using a solar panel-powered pump system, with bids due October 27, 2026 at 3:00 PM through the Iowa Management of Procurement and Contracts System (IMPACS).

The scope encompasses selective clearing, excavation and grading of approximately 19,861 cubic yards; installation of 835 linear feet of tile and outlet pipe; placement of 29 tons of riprap; construction of one Modified SW-513 concrete outlet structure and one lift station with SW-401 concrete structure; solar pump system installation; and seeding of 2.4 acres. All bidders must be registered with the Iowa Department of Inspections, Appeals & Licensing prior to contract execution.

The estimated construction cost range is $175,000 to $275,000. The contract term runs from commencement within 7 days of the preconstruction meeting through a construction deadline of September 1, 2027, with seeding deadlines of December 15, 2027. Bid security of 10% of the bid price is required; the successful bidder will furnish a Performance/Payment Bond equal to 100% of the contract price.

The pre-bid meeting is scheduled for October 6, 2026 at 11:00 AM at Carroll Public Library, with virtual attendance available. Written technical questions must be submitted to Brandon Short, P.E. of Bolton & Menk with a copy to Tracy Bruun at tracy.blocker@iowaagriculture.gov by 3:00 PM on October 14, 2026 for inclusion in a final addendum. Interested parties must email Tracy Bruun to be added to the plan holders list for meeting minutes, addenda, and plan holder updates. Contract documents are available through the Iowa Department of Administrative Services bidding opportunities website and through SciQuest.