Knri replace VC sanitary plumbing/septic

The National Park Service Midwest Region is seeking qualified contractors to replace sanitary plumbing and septic infrastructure at the Knife River Historic Indian Villages National Historic Site Visitor Center in Stanton, North Dakota. The project encompasses replacement of all exterior sanitary plumbing associated with the Visitor Center building, select indoor plumbing piping, interior sewer piping below both floors, an exterior lift station and valve vault with new electrical components, and a new exterior septic system including septic tank(s), cleanouts, distribution box, and absorption trenches. Interested vendors must submit responses by 12:00 PM Mountain Time on April 29, 2026, to joseph_kirk@nps.gov with required documentation including firm name, address, contact information, UEI number, bonding capability, size status and applicable SBA certifications, and a capability statement. The evaluation criteria include contractor capability to perform work with firm employees versus subcontractors and overall qualifications to execute the project. This is a market research sources sought notice rather than a formal solicitation, with any resulting Request for Proposal to be posted separately on SAM.gov.

No set-aside designations have been applied to this procurement. The estimated project value ranges between $500,000 and $1,000,000 under NAICS code 237110 (Water and Sewer Line and Related Structures Construction), with a small business size standard of $45 million. The existing septic system, installed in 1992, has experienced chronic failures including inadequate pipe diameter and slope preventing solids evacuation, resulting in backups, building damage to museum collections and storage areas, and temporary facility closures. Work must be completed within 120 calendar days of the Notice to Proceed, with site work impacting the existing system scheduled to commence after Labor Day. Interested parties should note this is a pre-solicitation notice and formal proposal requirements will be detailed in the upcoming RFP announcement.