Iowa City Community School District Bidopportunities #26-02 Cal883229BN & BS (Calhoun)

Cal883229BN-North & BS-South Nutrient Reduction Wetland Project

The Iowa Department of Agriculture & Land Stewardship awarded contracts for two nutrient reduction wetlands, CAL883229BN-North and CAL883229BS-South, located in Calhoun County, Iowa. The projects involve site clearing, excavation, grading, installation of lift stations with solar-powered pumps, force mains, water control structures, drawdown pipes, riprap, and seeding. The North site encompasses approximately 31,200 cubic yards of earthwork, with a construction cost estimated between $375,000 and $475,000, and must be completed by December 31, 2026, with seeding deadlines of May 15, 2027, and June 30, 2027. The South site includes about 10,300 cubic yards of earthwork, with an estimated cost of $175,000 to $275,000, and has similar completion and seeding deadlines. The contracts specify bid submission procedures, bonding requirements, and detailed construction specifications, with bid opening scheduled for May 20, 2026.

Description

This project involves the construction of two pumped nutrient reduction wetlands in Calhoun County, Iowa. The work includes selective clearing, excavation and grading, installation of lift stations with solar powered pumps, force mains, tile, inlet risers, water control structures, drawdown pipes, riprap, and seeding. The north site (CAL883229BN) includes about 31,200 cubic yards of earthwork with an estimated construction cost range of $375,000 to $475,000. The south site (CAL883229BS) includes about 10,300 cubic yards of earthwork with an estimated construction cost range of $175,000 to $275,000. Construction must be completed by December 31, 2026, with seeding deadlines of May 15, 2027 (structure seeding) and June 30, 2027 (buffer seeding).

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