Iowa City Community School District Bidopportunities #26-17 Ben850929B (Benton)

Construction of the BEN850929B nutrient-reduction wetland in Benton County, Iowa

Iowa is seeking a contractor to build the BEN850929B nutrient-reduction wetland in Benton County. - Government buyers: Iowa Department of Agriculture and Land Stewardship (IDALS), Division of Soil Conservation; Natural Resources Conservation Service (NRCS) construction specifications. The plan set identifies Shane Wulf as project manager. - Work requested: Site preparation, crop-damage compensation, tile investigation and removal, excavation, dam and wetland earthwork, drainage, water-control structures, erosion controls, and seeding. - Key quantities: 18,151 cubic yards of earthwork; 1,150 square feet of steel sheet piling; 1,158 linear feet of 6-inch dual-wall, non-perforated polyethylene drain pipe; 110 linear feet of 18-inch CMP drawdown pipe; 668 tons of Class E riprap; 35 tons of 2-inch clean stone; 72 cubic yards of grout; 430 square yards of Type 5B turf reinforcement mat; 515 linear feet of silt fence; and 5 acres of seeding. Plans also specify one 24-inch CMP drawdown riser, one 48-inch CMP water-control structure, one flared end section, three 8-inch CMP tile outlets (20 feet each), and 13 stoplogs. - Notable requirements: Construct an 18-inch clay liner in two lifts across the wetland bottom; use specified cohesive soils and compaction methods for embankment and core fill; install erosion controls and seed designated areas with specified mixes. Construction and seeding have separate completion milestones; the notice does not state a start date or contract duration. - OEMs and vendors: No product OEMs, manufacturers, or commercial vendors are named. Iowa DOT and SUDAS are referenced for material and installation standards. - Estimated construction value: $250,000–$350,000.

Description

This project is for construction of a Breakpoint nutrient reduction wetland in Benton County, Iowa. Work includes selective clearing, excavation, grading, steel sheetpile and tile installation, water-control and stoplog storage structures, riprap, turf reinforcement mat, and seeding. The notice lists estimated construction costs of $250,000–$350,000 and completion dates of November 1, 2027, for construction and December 15, 2027, for seeding. The response deadline is December 10, 2026, at 3:00 PM.

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