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The Radford Army Ammunition Plant (RFAAP) Acid Farm Storage Tanks

Closed — responses were due 9 Jan 2026 · Unrestricted (full and open) · Department of the Army, DoD · NAICS 541330 · Solicitation W911S226RA004

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A newer version of this notice has been posted. SAM.gov republished solicitation W911S226RA004 on 26 August 2026. This page is kept because it is a real record, but the current requirement, dates and attachments are on the latest version. Read the latest version →

What happened next

This solicitation has closed — responses were due 09 January 2026.

Awarded to APEX ENGINEERING PLLC 326 E 5TH AVE Calvert City KY 42029 USA for $16.2M, posted 26 August 2026. Read the award notice →

Solicitation details

Solicitation numberW911S226RA004
Notice ID03331f531b5e4d65b095d147deeb8a8b
AgencyDepartment of Defense (DoD)
Sub-agencyDepartment of the Army
Contracting officeW6QM MICC-FT DRUM
NAICS code541330 — Engineering Services
Product / service code (PSC)C1EA
Set-asideUnrestricted (full and open)
Notice typeSources Sought
Posted12 December 2025
Response deadline09 January 2026 (closed)

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Description

The Radford Army Ammunition Plant (RFAAP) Acid Farm storage tanks are utilized for the containment of Spherical Nucleic Acid (SNA), Sulfosalicylic Acid (SSA), Oleum, Pyro, and Weak Nitric Acid (WNA), all of which are essential to Nitrocellulose (NC) production. The Acid Tank Area currently supports both the Nitric Acid Concentrator/Sulfuric Acid Concentrator (NAC/SAC) and the MNC production facility. The modernized NAC/SAC, presently undergoing upgrades, is designed to process approximately 100 million pounds of SNA (98.5 wt.%) annually, to meet the maximum production demand of 28 million pounds of NC per year. To achieve this, Architect-Engineering (A-E) design services are required for a modernized Acid Tank Area capable of supporting capacity requirements of the modernized Nitric Acid Concentrator/Sulfuric Acid Concentrator (NAC/SAC), Modernized Nitrocellulose (MNC) production facility, and the Modernized Nitroglycerin Production Facility (NG-3) at the Radford Army Ammunition Plant (RFAAP). The Tank Area shall be required to handle pyro acid, Strong Sulfuric Acid (SSA), Oleum, and Strong Nitric Acid (SNA). The Advanced (90%) Design shall include all required tanks and supporting infrastructure. The Design shall address all environmental and safety issues related to the receipt, storage, and dispersal of the various acids. Where technically and economically feasible the design will incorporate retrofitting and reuse of legacy structures, demolition of obsolete legacy equipment, and a phased modernize-in-place approach for the Tank Areas in highest need of upgrades or increased capacity.

Version history

SAM.gov has posted 3 notices under solicitation W911S226RA004, oldest first.

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