Z--KNRI REPLACE Septic System

This contract involves the replacement of the septic and sanitary plumbing system at the Knife River Indian Villages National Historic Site Visitor Center in Stanton, North Dakota, under a firm-fixed price solicitation issued by the Department of the Interior through Mwr NEKOTA. The project requires full replacement of all exterior sanitary infrastructure, including a new septic system with tanks, distribution boxes, absorption trenches, and cleanouts, as well as construction of new interior sewer piping beneath both floors of the visitor center and rework of the exterior lift station and valve vault with updated electrical and internal components. The work must be completed within 120 calendar days of the Notice to Proceed, with all site activities impacting the existing system restricted to occur after Labor Day. The solicitation is strictly for Indian Small Business Economic Enterprise (ISBEE) concerns, with 100% set aside and a small business size standard of $45 million under NAICS code 237110. Offerors must be registered and active in SAM.gov, possess a Unique Entity Identifier, and have completed all required online representations and certifications by the bid deadline. The estimated contract value ranges between $500,000 and $1,000,000. Construction wage rate requirements for Pennington County will apply. The original bid close date was June 23, 2026, but this has been amended to July 7, 2026, at 1:00 PM Mountain Time. All technical specifications, drawings, and detailed construction requirements will be provided only upon issuance of the formal solicitation, which is anticipated around May 15, 2026. Proposals must be submitted via SAM.gov, and no hardcopy or email copies will be distributed by the contracting office. The point of contact for the solicitation is Joseph Kirk, Contracting Officer, reachable at joseph_kirk@ios.doi.gov or 605-574-0510.