Iowa Impacs #013-RFB-3225-2027

Construction of a solar-powered nutrient-reduction wetland in Story County, Iowa

The Iowa Department of Agriculture & Land Stewardship is seeking a contractor to build a solar-powered nutrient-reduction wetland in Story County. - Government buyer: Iowa Department of Agriculture & Land Stewardship, Division of Soil Conservation and Water Quality. - Scope: Prepare and grade the site; excavate and place earthfill; install pipe, tile, pump basin, and outlet structures; place riprap; and complete seeding. - Major quantities: 34,679 cubic yards of general excavation; 8,593 cubic yards of topsoil handling; 1,491 cubic yards of earthfill across three types; 190 linear feet of 18-inch reinforced concrete pipe; 150 linear feet of 36-inch reinforced concrete pipe; 1,044 linear feet of perforated and 85 linear feet of non-perforated 6-inch HDPE pipe; two solar pump systems; and 10.8 acres of buffer seeding. - Other listed items: Site stripping and preparation (1 lump sum); structure and channel seeding (1 acre); mobilization and demobilization (1 lump sum); one 18-inch and one 36-inch concrete apron/footing/bar guard; one SW-402 pump basin; one 72-by-72-inch modified SW-513 outlet structure; three anti-seep collars; one 8-inch CMP tile outlet; and 42.7 tons of Class E riprap. - Notable requirements: The wetland will treat water from an existing ditch using solar-powered pumping. Construction is to begin within seven days of the preconstruction meeting; seeding has a separate completion milestone. - Estimated construction value: $240,000–$360,000. - OEMs and named product vendors: None identified.

Description

The Iowa Department of Agriculture & Land Stewardship is soliciting bids to construct a nutrient reduction wetland that treats water from an existing ditch using a solar-powered pump. Work includes clearing, excavation and grading, tile and outlet structures, pump and tile installation, riprap placement, and seeding. The project includes approximately 36,170 cubic yards of earthwork, 1,469 linear feet of pipe installation, 43 tons of riprap, and 11.5 acres of seeding. The stated estimated construction cost range is $240,000 to $360,000; construction is due by September 1, 2027.

View original listing