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

Canonical: https://abierto.us/opportunities/w9128f26ra004

- Solicitation number: W9128F26RA004
- Notice type: Solicitation (first published as presolicitation)
- Status: Closed. Deadline was May 27, 2026 at 3:00 PM EDT
- Department: Department of the Army
- Agency: Department of the Army
- Contracting office: W071 Endist Omaha (W9128F)
- NAICS: 236220 Commercial and Institutional Building Construction
- Product or service code: Y1BZ Construction Of Other Airfield Structures
- First posted: October 3, 2025
- Last posted: May 26, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/8ac8306048894028943b8560ed297404/view

## Description

**Amendment 9:** The purpose of this amendment is as follows:

1. Revised pricing is due by 2:00 PM CT on 05/27/26 - only for those offerors who submitted a proposal in compliance with the original deadline of 04/20/26. Original proposals were due by 2:00 PM CT on 04/20/26. All other terms and conditions remain the same.

## Publications

- October 3, 2025: Presolicitation, due October 20, 2025 at 1:00 PM EDT. Notice b1a6851b91a2437b86ce5f1f8cad2846. https://sam.gov/workspace/contract/opp/b1a6851b91a2437b86ce5f1f8cad2846/view
- December 30, 2025: Presolicitation, due January 30, 2026 at 12:00 PM EST. Notice 7754cd7211b24605b3063b87404e932c. https://sam.gov/workspace/contract/opp/7754cd7211b24605b3063b87404e932c/view
- January 22, 2026: Solicitation, due March 3, 2026 at 3:00 PM EST. Notice e761492ccee64d4bba9c07e262c0e412. https://sam.gov/workspace/contract/opp/e761492ccee64d4bba9c07e262c0e412/view
- February 5, 2026: Solicitation, due March 17, 2026 at 4:00 PM EDT. Notice 21144c15b069478a9da38528615435bf. https://sam.gov/workspace/contract/opp/21144c15b069478a9da38528615435bf/view
- February 12, 2026: Solicitation, due March 17, 2026 at 4:00 PM EDT. Notice 12e7f9a638f843dd9506d65e213adc20. https://sam.gov/workspace/contract/opp/12e7f9a638f843dd9506d65e213adc20/view
- March 10, 2026: Solicitation, due March 31, 2026 at 4:00 PM EDT. Notice a11687bc02cf48978daa99a709ea5433. https://sam.gov/workspace/contract/opp/a11687bc02cf48978daa99a709ea5433/view
- March 18, 2026: Solicitation, due April 14, 2026 at 3:00 PM EDT. Notice 8375079704c24158922cb2678a6ee922. https://sam.gov/workspace/contract/opp/8375079704c24158922cb2678a6ee922/view
- March 30, 2026: Solicitation, due April 14, 2026 at 3:00 PM EDT. Notice 83e96f6cefce423e8db89f9ed6ef0781. https://sam.gov/workspace/contract/opp/83e96f6cefce423e8db89f9ed6ef0781/view
- April 14, 2026: Solicitation, due April 20, 2026 at 3:00 PM EDT. Notice 9e16f68b972e49b6bfe54d6a15722b5e. https://sam.gov/workspace/contract/opp/9e16f68b972e49b6bfe54d6a15722b5e/view
- April 14, 2026: Solicitation, due April 20, 2026 at 3:00 PM EDT. Notice abe68445ce694d09bec9fa4a501d0d31. https://sam.gov/workspace/contract/opp/abe68445ce694d09bec9fa4a501d0d31/view
- May 20, 2026: Solicitation, due May 27, 2026 at 3:00 PM EDT. Notice 93b91db512f74a66a79da2030f642536. https://sam.gov/workspace/contract/opp/93b91db512f74a66a79da2030f642536/view
- May 26, 2026: Solicitation, due May 27, 2026 at 3:00 PM EDT. Notice 8ac8306048894028943b8560ed297404. https://sam.gov/workspace/contract/opp/8ac8306048894028943b8560ed297404/view

## Points of contact

- Margarette Wolfe, margarette.e.wolfe@usace.army.mil, 4029952063
- Brittany Gull, brittany.c.gull@usace.army.mil

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/w9128f26ra004.