Z--DK Heart Butte Dam Safety Modification

Inactive on SAM.gov — responses were due 29 May 2026 · Unrestricted (full and open) · Bureau of Reclamation, DOI · NAICS 237990 · Solicitation 140R6026R0004

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SAM.gov marked this notice inactive — responses were due 29 May 2026.

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Solicitation details

Solicitation number	140R6026R0004
Notice ID	cbe6a07979634eeabb02076288f01bec
Agency	Department of the Interior (DOI)
Sub-agency	Bureau of Reclamation
Contracting office	GREAT PLAINS REGIONAL OFFICE
NAICS code	237990 — Other Heavy and Civil Engineering Construction
Product / service code (PSC)	Z2PZ
Set-aside	Unrestricted (full and open)
Notice type	Solicitation
Posted	24 April 2026
Response deadline	29 May 2026 (closed)

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Description

DK Heart Butte Dam Safety Modification Please see the attachments entitled "Solicitation 140R6026R0004 0002 4.24.26" and "03B_00 00 02_Drawings 11x17 4.23.26" for the full solicitation details. Please also see the following attachments for more supporting documentation relating to this solicitation: Geology Package_Rev 04-21-26 8530-2018-54_Geotech Lab_Conduit Sediment 8550-2020-06_Heart Butte Dam Lab Testing Report 8550-2024-25_Heart Butte FD Borrow TM 8550-2025-02 Geotechnical Laboratory in Support of Final Design Modifications Heart Butte Dam Heart Butte Dam 2024 Final Design Geologic Investigations A copy of the 2018-2021 Heart Butte Dam Corrective Action Study Geologic Exploration Report and the Revised Geology Package (4.21.2026) can be requested from the Contracting Specialist at mitchell_frost@ios.doi.gov.

Version history

SAM.gov has posted 8 notices under solicitation 140R6026R0004, oldest first.

26 February 2026 — Presolicitation
13 April 2026 — Solicitation
14 April 2026 — Solicitation
24 April 2026 — Solicitation (this page)
11 May 2026 — Solicitation
20 May 2026 — Solicitation
03 June 2026 — Solicitation
15 June 2026 — Solicitation (latest)

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Market context: DOI and NAICS 237990

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