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Construct Interim Remedial Action (IRA) for the Nelson Tunnel Superfund Site
Department of the Army · W071 ENDIST OMAHA
Respond by: Nov 20, 2026, 2:00 PM UTC−621 days left
From SAM.gov's public data file generated Oct 29, 2026, 3:30 AM UTC; newest notice posted Oct 29, 2026; loaded into FedSub Oct 29, 2026, 5:46 AM UTC
Notice facts
Source: SAM.gov Contract Opportunities public data file
- Solicitation number
- W9128F27RA056
- Notice type
- Presolicitation
- Posted
- Oct 16, 2026
- Response date
- Respond by Nov 20, 2026, 2:00 PM UTC−6
- Set-aside
- None stated
- NAICS code
- 237990 Other Heavy and Civil Engineering Construction
- Product or service code
- Y1LC
- Place of performance
- 81130
- Contracting office
- W071 ENDIST OMAHA (W9128F)OMAHA, NE 68102
- Agency
- Department of Defense · Department of the Army
Past prime awardees
Source: Award history, not a list of bidders on this notice
Past prime awardees · award history, not a list of bidders on this notice
43 companies held prime contracts from this office under NAICS 237990; 1 of them reported first-tier subawards to companies with NAICS 237990 in FedSub's records.
- AMS INDUSTRIAL LLC · Reported first-tier subawards to 1 company with NAICS 237990 in FedSub's records (latest Oct 2021).
24 more past prime awardees on Professional
Description
Source: SAM.gov Contract Opportunities public data file
This is a pre-solicitation notice. This is not a solicitation and any offers received as a result of this pre-solicitation notice will not be accepted or evaluated. USACE Omaha District intends to issue Request for Proposal (RFP) solicitation W9128F27RA056 for the following action in November 2026 with the planned proposal due date in January 2027. ***PLEASE REFERENCE THE SITE VISIT INSTRUCTIONS IN THE ATTACHED DOCUMENT AND RESPOND NO LATER THAN THE DATE SHOWN. Project Title: Construct Interim Remedial Action (IRA) for the Nelson Tunnel Superfund Site Project Location: One mile north of the town of Creede in Mineral County, Colorado NAICS Code: 237990 - Other Heavy and Civil Engineering Construction PSC Code: Y1LC - Construction of Tunnels and Subsurface Structures Set-Asides: This solicitation will be issued unrestricted; both small and large businesses are encouraged to participate. Synopsis of Project: Construction Services for the Nelson Tunnel/Commodore Waste Rock Site (Nelson Tunnel Site or Site), the focus of the interim remedial action (IRA), consists of an abandoned underground hard rock mine and drainage tunnel with several shafts, crosscuts and drafts branching off the main tunnel. The remedial action objective of the RA is to reduce the likelihood of a large, uncontrolled release of mine-impacted water from mine pools impounded within the Nelson Tunnel. The selected alternative for the Nelson Tunnel Interim Record of Decision (IROD) is to construct a bypass adit that connects into Nelson Tunnel at a sufficient distance from the surface to allow for installation of a flow-through hydraulic bulkhead within Nelson Tunnel. The IROD selected remedy is Alternative 4, Drive New Adit to Intersect Nelson Tunnel, Tunnel Rehabilitation, Install Bulkhead in Nelson Tunnel and Flow Control Structure in Commodore 5 level and include the following remedial components. 1. Installation of a new adit south of Nelson Tunnel, to bypass the Nelson Tunnel Portal Pool. 2.…
Versions on SAM.gov
Source: SAM.gov Contract Opportunities public data file
Posted Oct 16, 2026PresolicitationCurrent version
Respond by Nov 20, 2026, 2:00 PM UTC−6
This version on SAM.gov (opens SAM.gov in a new tab)