Schedule of Prices - REVISED.pdf

This is a Schedule of Prices document for Bid No. 26-1, a nutrient reduction wetland construction project (KOS972821A) located in Section 21, Township 97 North, Range 28 West, Kossuth County, Iowa, procured by the Iowa Department of Agriculture and Land Stewardship, Division of Soil Conservation and Water Quality. The project encompasses comprehensive wetland restoration construction services including 26 line items: site stripping and preparation, crop damages, structure and buffer seeding (17 acres total), mobilization and demobilization, drainage tile investigation, steel sheet piling (1,444 square feet), excavation (6,962 cubic yards), earthfill operations (4,146 cubic yards across three categories), drainfill sand (83 tons), filter diaphragm, topsoil placement (680 cubic yards), drainage pipes (515 linear feet of various types), water control structures, riprap placement (548 tons), concrete grouting (108 cubic yards), and dewatering. Sealed bids must be submitted through the Iowa Management of Procurement and Contracts System (IMPACS) by 3:00 PM on May 20, 2026, with a pre-bid conference scheduled for 10:30 AM on April 23, 2026, at the USDA Service Center-NRCS in Algona, Iowa. All construction work except seeding must be completed by December 31, 2026, with structure seeding due by May 15, 2027, and buffer seeding by June 30, 2027. Contractors must commence work within 14 days of the preconstruction meeting.

Bids are submitted on a lump sum basis for site stripping, mobilization and demobilization, and water control structures, with unit-price bidding for excavation, earthfill variants, topsoil placement, drainage tile, riprap placement, and seeding. The estimated construction cost range is $350,000 to $450,000. Bidders must submit a proposal guarantee (bid bond) equal to 10 percent of the base bid amount and a notarized affidavit confirming examination of contract documents and absence of collusion. The successful contractor must execute a Performance Bond equal to 100 percent of the contract price within 14 days of receiving the Notice-of-Award. Monthly payments will be made at 97 percent of completed work value with 30-day retention. Liquidated damages are assessed at $175.00 per calendar day for failure to complete construction work by December 31, 2026, and $125.00 per calendar day for seeding delays. Materials purchased for the project are exempt from Iowa sales and use tax. Technical questions regarding plans and specifications must be directed to engineer Andrew Schippers (aschippers@ducks.org) and received by 3:00 PM on May 4, 2026. No set-aside designations or disadvantaged enterprise restrictions are identified for this procurement.