Mah751636C 25-15

The Iowa Department of Agriculture & Land Stewardship, Division of Soil Conservation and Water Quality, is seeking bids for the construction of a nutrient reduction wetland in Mahaska County, Iowa. The project involves selective clearing, excavation and grading, riser outlet, along with tile and outlet structures, riprap placement, and seeding. The estimated construction cost range for this project is $250,000 to $350,000. A pre-bid conference will be held on October 7, 2025, and bids are due by October 28, 2025. • The project includes around 24,926 cubic yards of earthwork, 368 linear feet of various tile installation, a concrete and a nyloplast structures, 310 tons of riprap along with 25 cubic yards of grout and 6.6 acres of seeding. • The successful bidder shall be required to furnish a Performance/Payment Bond in an amount equal to one hundred percent (100%) of the contract price. • Questions concerning the Plans and Construction Specifications should be in writing and addressed to Dan Jensen, P.E., [email protected], and must copy Tracy Bruun, Division, [email protected]. • To be considered in a final addendum, written questions must be received by 3:00 PM on October 14, 2025.