Corps Island Unloading

Solicitation / RFP / RFQ

This solicitation is for the "Corps Island Dredge Material Site Unloading Pool 3" project, located in Diamond Bluff, WI. The project involves transferring over 300,000 cubic yards of stockpiled dredge material from Corps Island via mechanical and/or hydraulic excavation methods. Corps Island has historically been used for material placement from the Mississippi River channel. The estimated total price for the base requirement and options is approximately $5-10 million dollars.

• Removal and transport of over 300,000 cubic yards of dredge material from Corps Island.

• Permanent placement of the removed material.

• Contractor is responsible for supplying disposal capacity through a readily available commercial site (e.g., gravel/sand pit) or beneficial use sites.

• Disposal sites must not contain culturally or environmentally sensitive areas.

• Contractor must not disturb, destroy, or allow discharge of dredge material into any wetlands.

• Any mitigation necessary for environmental impacts at a disposal site will be at the contractor's cost.

• Contract Type: Fixed-firm price.

• Period of Performance: 730 calendar days after notice to proceed.

• Estimated Value: Approximately $5-10 million dollars.

• Offers are due by 02:00 PM local time on March 10, 2026.

• Offers will be publicly opened at that time.

• Sealed envelopes must be marked with offeror's name and address, solicitation number, and due date/time.

• Proposal submission is electronic via the Procurement Integrated Enterprise Environment (PIEE) suite.

• NAICS Code: 237990.

• This solicitation is issued as a 100% Small Business Set-Aside.

• Bidders must register in SAM.gov and complete online representations and certifications.

• Bidder inquiries must be submitted via the ProjNet system at https://www.projnet.org no later than 10 days prior to bid opening.

• A bid guarantee is required (20% of bid price or $3,000,000.00, whichever is less).

• Performance and Payment Bonds are required.

Solicitation / RFP / RFQ

This document is a solicitation (W912ES26BA001) for the "Corps Island Dredge Site Unloading Pool 3" located on the Mississippi River at Diamond Bluff, WI. It outlines the plans and details for this project.

• The project involves the unloading of dredged material at the Corps Island site.

• Specific details regarding site preparation, berm construction, and material placement are provided in the accompanying drawings (Sheets C-101 and C-301).

• Berm side slopes are specified as 1V:3H, with adjustments for protecting existing trees.

• Maximum removal depth for dredge access and staging is specified as 10' below the Low Control Pool (LCP), with maximum side slopes of 1V:2H and a bottom width of 200'.

• Work limits are defined by the toe of the existing dredge material pile (approximately EL 675), covering an area of 8.2 acres.

• The solicitation number is W912ES26BA001.

• The issue date is December 2025.

• The contract type and period of performance are not detailed in this document.

• This document primarily contains engineering drawings and related information, not specific proposal submission instructions or evaluation criteria.

• No specific eligibility or set-aside information is present in this document.

• The document includes detailed engineering drawings (cover sheet, location maps, index, plan, and typical sections) that provide critical information for bidders.

• Hydrologic information, including daily pool elevation hydrographs and monthly pool elevation duration curves for the Mississippi River at Lock and Dam 3 (2015-2024), is provided to inform bidders about river conditions.