Iowa City Community School District Bidopportunities #26-03 Ham892326B (Hamilton)

Construction of Ham892326B Nutrient Reduction Wetland in Hamilton County, Iowa

This opportunity involves the construction of the Ham892326B Nutrient Reduction Wetland in Hamilton County, Iowa, led 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 - Office: Hoover State Office Building, Des Moines, IA - OEMs and Vendors Mentioned: - Flexamat Plus (tied concrete block mat) - Fratco FLEXCORR (HDPE dual wall pipe, or engineer-approved equal) - Products and Quantities Requested: - Earthwork: ~21,135 cubic yards - Reinforced Concrete Pipe (RCP): - 12" Diameter: 1,344 LF - 15" Diameter: 932 LF - 18" Diameter: 369 LF - Total RCP: 2,645 LF - HDPE Dual Wall Pipe (Smooth Lined CPDT, 15" Diameter): 1,579 LF - Tied Concrete Block Mat (Flexamat Plus or equal): 2,350 SF - Concrete Manholes: 2 - Seeding: 2.9 acres (structure and buffer) - Riprap (Class E): 33.3 tons - Additional structures: Modified SW-513 inlet/outlet, SW-401 manhole, reinforced concrete aprons, tile connections - Services Requested: - Site stripping and preparation - Crop damage mitigation - Seeding (structure/channel and buffer) - Mobilization/demobilization - Drain tile investigation and removal - Excavation and earthfill - Construction of concrete structures and aprons - Unique or Notable Requirements: - Flexamat Plus specified for tied concrete block mat, or engineer-approved equal - Fratco FLEXCORR or approved equal for HDPE dual wall pipe - Compliance with NRCS and SUDAS standards - 10% bid bond and 100% performance/payment bond required - Registration with Iowa Department of Inspections, Appeals & Licensing - Strict QA/QC and inspection protocols - Estimated Contract Value: - $250,000 to $350,000 - Place of Performance: - Section 26, Township 89 North, Range 23 West, Hamilton County, Iowa - Government office: Hoover State Office Building, Des Moines, IA

Description

This solicitation is for the construction of a Tile Zone nutrient reduction wetland in Hamilton County, Iowa. The work includes selective clearing, excavation, grading, installation of reinforced concrete pipe (RCP) and high density polyethylene (HDPE) dual wall pipe, tied concrete block mat installation (Flexamat Plus or engineer approved equal), concrete manholes, and seeding. The project involves approximately 21,135 cubic yards of earthwork, 2,645 linear feet of RCP, 1,579 linear feet of HDPE dual wall pipe, 2,350 square feet of tied concrete block mat, 2 concrete manholes, and 2.9 acres of seeding. Construction must commence within 14 days of the preconstruction meeting and be completed by December 31, 2026, with seeding deadlines extending into mid-2027. The estimated contract value ranges between $250,000 and $350,000.

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