Iowa City Community School District Bidopportunities #26-08 Cal883432B (Calhoun)

Calhoun County Nutrient Reduction Wetland Construction Project

This opportunity is for the construction of the Cal883432B Nutrient Reduction Wetland Project in Calhoun County, Iowa, managed by the Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation and Water Quality. - Government Buyer: - Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation and Water Quality - Project Scope: - Construction of a nutrient reduction wetland, including selective clearing, excavation, grading, and installation of water control and drainage structures - Major earthwork: approximately 13,800 cubic yards - Installation of 2,750 square feet of tied-concrete block mat for erosion control - Placement of 31 tons of riprap and erosion stone - Installation of 769 linear feet of tile, including 581 LF of 12-inch and 148 LF of 10-inch corrugated polyethylene pipe - Installation of slotted 18-inch CMP riser structure, CMP tile outlets with animal guards, silt fences (1,325 LF), straw wattles (100 LF), and seeding (4 acres) - Products/Services Requested: - Earthwork, site preparation, seeding (structure, buffer, temporary), water control structure assembly, trench drain, drain tile investigation, connecting/capping existing tile, topsoil placement, mobilization/demobilization - Unique/Notable Requirements: - No specific OEMs or part numbers are named; standard construction materials and methods are specified - Contractor must provide a 10% bid bond and a performance bond equal to 100% of contract value - Contractor registration with the Iowa Department of Inspections, Appeals & Licensing is required - Liquidated damages apply for late completion - Electronic grading files available upon request from ISG Inc (project engineer) - Estimated contract value: $135,000 to $155,000

Description

This solicitation is for the Cal883432B Nutrient Reduction Wetland Project located in Calhoun County, Iowa. The work includes selective clearing, excavation and grading, tied-concrete block mat placement, tile and outlet structures installation, riprap placement, and seeding. The project involves approximately 13,800 cubic yards of earthwork, 2,750 square feet of tied-concrete block mat, 769 linear feet of tile installation, a water control structure, 31 tons of riprap and erosion stone, and 4 acres of seeding. Construction must commence within 7 days of the preconstruction meeting and be completed by November 30, 2026, with seeding deadlines on December 15, 2026.

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