# Outfall 40 at HSAAP

Canonical: https://abierto.us/opportunities/w9123626ratbd

- Solicitation number: W9123626RATBD
- Notice type: Sources sought
- Status: Closed. Deadline was February 6, 2026 at 9:00 AM EST
- Department: Department of the Army
- Agency: Department of the Army
- Contracting office: W2SD Endist Norfolk (W91236)
- NAICS: 237990 Other Heavy and Civil Engineering Construction
- First posted: January 21, 2026
- Last posted: January 21, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/db13eda3638e4906913089e6c0d3d3cd/view

## Description

Holston Army Ammunition Plant (HSAAP) is a Government-Owned, Contractor-Operated (GOCO) explosives production facility located in Kingsport, Tennessee. All production at HSAAP depends on river water.

The HSAAP river water system was installed in the early 1940s and was originally designed for resiliency and sustainability; but the system has degraded over time.Due to temperature compliance issues, all the production channels and outfalls to the Arnott Branch have been directed to Channel 1976 and associated Outfall 40. Approximately 970 acres of the HSAAP site now feed into Outfall 40 from a storm run-off standpoint; however, the majority of flow in this channel and outfall is from once-through non-contact cooling water (NCCW) discharging from various production facilities on the site.

With planned increases in production and cooling water flow, this channel and outfall will exceed permissible temperature impacts to the Arnott Branch as required by operation permits. The Project includes modifications to Outfall 40, which involves re-routing and channel improvements. Improvements include the construction of a new portion of channel that discharges directly into the Holston River, channel stabilization, and the abandonment of the existing weir and Outfall 40 into Arnott Branch.

Construction of the new channel will include a 10-foot clearing on either side for maintenance and construction, along with a temporary road and turnaround on the eastern side for construction vehicles.Please see the attached document for further details

## Publications

- January 21, 2026: Sources sought, due February 6, 2026 at 9:00 AM EST. Notice db13eda3638e4906913089e6c0d3d3cd. https://sam.gov/workspace/contract/opp/db13eda3638e4906913089e6c0d3d3cd/view

## Points of contact

- Philip Mathews, philip.d.mathews@usace.army.mil, 7572017029

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