# B-21 West Alert Apron Environmental Protection Shelters at Ellsworth Air Force Base (AFB), South Dakota (SD)

Notice 21144c15b069478a9da38528615435bf (solicitation W9128F26RA004) from DEPT OF DEFENSE, W071 ENDIST OMAHA, posted 2026-02-05, responses due 2026-03-17T20:00:00.000Z. Status: open.

| Field | Value |
| --- | --- |
| Notice ID | 21144c15b069478a9da38528615435bf |
| Solicitation number | W9128F26RA004 |
| Type | Solicitation |
| Agency | DEPT OF DEFENSE |
| Sub-tier | DEPT OF THE ARMY |
| Office | W071 ENDIST OMAHA |
| Posted | 2026-02-05T18:46:16.000Z |
| Response deadline (UTC) | 2026-03-17T20:00:00.000Z |
| Set-aside | - |
| NAICS | 236220 |
| PSC | Y1BZ |
| Place of performance | - |
| Award | - |

## Description

Amendment 1: The purpose of this amendment is as follows: 1. Revised 00 21 00 (see 00 21 00, dated 05 FEB 2026), 2. Revised 00 22 00 (see 00 22 00, dated 05 FEB 2026), 3. Wage Determination SD20260032 has been made inactive and replaced with SD20260001 (see Wage Determination SD20260001, dated 30 JAN 2026), 4. Revised drawings/specifications (see Summary of Changes, dated 04 FEB 2026), 5. Added Site Visit Roster (see Site Visit Roster, dated 03 FEB 2026, 6. Revised Quantity for Option CLIN 9 from 20 to 250, 7. Proposal due date is extended to 17 MAR 2026, 2:00 PM CST, All other terms or conditions remain the same.

## Sources

- View on SAM.gov: https://sam.gov/opp/21144c15b069478a9da38528615435bf/view
- Data as of 2026-11-14. Source: https://sam.gov/data-services/Contract%20Opportunities/datagov

## Cite this

"B-21 West Alert Apron Environmental Protection Shelters at Ellsworth Air Force Base (AFB), South Dakota (SD), SAM.gov contract opportunity 21144c15b069478a9da38528615435bf." samgovapi.io, https://samgovapi.io/opportunity/21144c15b069478a9da38528615435bf, data as of 2026-11-14. Primary record: https://sam.gov/opp/21144c15b069478a9da38528615435bf/view

## API and MCP

- REST: GET https://samgovapi.io/api/v1/opportunities/21144c15b069478a9da38528615435bf
- MCP tool: get_opportunity

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