This Solicitation opportunity from Smithsonian Institution was posted on May 14, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Upgrade Sanitary and Storm Systems at the National Museum of Natural History

Awarded

33330226RF0010002Federal

Submission Closed06/03/2026, 07:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

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AI Contract Overview

The Smithsonian Institution is soliciting bids for a comprehensive upgrade of the sanitary and stormwater systems at the National Museum of Natural History in Washington, DC, under solicitation number 33330226RF0010002. The project, estimated to exceed $10 million, entails replacing aging infrastructure throughout the Main Building and East and West Wings with new piping systems while strictly preserving historic architecture, protected exhibits, and active research operations. Key work includes rerouting pipes to avoid sensitive spaces, removing or capping obsolete lines, performing lead and asbestos abatement in compliance with federal and local regulations, installing systems within the building’s tunnel network, tying into external SI infrastructure, and implementing erosion and sediment control measures aligned with EPA and District of Columbia mandates. Roof scuppers will also be inspected, replaced, and integrated into the stormwater system. The solicitation has been amended five times, extending deadlines for both RFI submissions and proposal responses, adding responses to inquiries, facilitating a second site visit, and requiring submission of presentation slides. The updated proposal due date is May 20, 2026, with a pre-bid meeting held on March 27, 2026. Proposals must be submitted electronically via Dropbox in three separate PDF volumes: Cost Proposal, Technical Proposal, and Subcontracting Plan, each structured per detailed formatting instructions. The contract is a fixed-price construction agreement with a 740-calendar-day performance period beginning at the Notice to Proceed, incorporating options that may extend the term. Subcontracting goals mandate 40% participation by small businesses, including at least 7% by Service-Disabled Veteran-Owned Small Businesses, in accordance with federal guidelines. The Davis-Bacon wage determination DC20260002 governs labor rates. Evaluation will prioritize technical merit—specifically the Plan of Accomplishment and Past Performance—as more important than cost, enabling a best-value tradeoff selection rather than a lowest-price technically acceptable award. Offerors must demonstrate deep experience with complex, sensitive historic facility projects, including detailed scheduling, coordination plans, and qualified key personnel. Packaging and labeling of materials must comply with ANSI A13.1, NFPA 70, and OSHA standards, requiring precise color-coding, barcoding of new equipment, and durable, compliant labeling across all piping and systems. Contractors are strictly prohibited from using the Smithsonian name in any promotional material without prior written approval, and all subcontracts must include this restriction.

General Info

Smithsonian seeks $10M fixed-price contractor for museum plumbing upgrades, abatement, and preservation compliance.

Agency

Smithsonian Institution

Contract Value

$29,213,000

NAICS

236220 - Commercial and Institutional Building Construction

Place of Performance

DC, 20560, USA

Set-Aside

NONE

Awardee

GRUNLEY CONSTRUCTION CO., INC.

Award Issued Date

09/24/2026, 12:00:00 AM UTC

Documents

Amendment 0001 to Solicitation 33330226RF0010002 for NMNH Sanitary and Storm Systems Upgrade

amendment

High

Amendment 0002 to Solicitation 33330226RF0010002 for NMNH Sanitary and Storm Systems Upgrade

amendment

High

Amendment 0003 to Solicitation 33330226RF0010002 for NMNH Sanitary and Storm Systems Upgrade

amendment

High

Amendment 0004 to Solicitation 33330226RF0010002 for NMNH Sanitary & Storm Systems Upgrade

amendment

High

Amendment 0005 to Solicitation 33330226RF0010002 for NMNH Sanitary and Storm Systems Upgrade

amendment

High

Davis Bacon Wage Determination DC20260002

wage-determination

High

Multi-Year Funding Document - SF 1600103 Upgrade Sanitary & Storm Systems

contract-document

High

Multi-Year Funding for NMNH Upgrade Sanitary & Storms Systems SF 73 1600103

contract-document

High

Project 1600103 NMNH Upgrade Sanitary & Storm Systems Bid Schedule

bid-schedule

High

Project 1600103 Specifications Appendix for NMNH Upgrade

specifications

High

Project 1600103 Specifications Volume 1 for NMNH Upgrade

specifications

High

Project 1600103 Specifications Volume 2 - Wet Pipe Sprinkler Systems

specifications

High

Smithsonian National Museum Electrical Fire Protection Bid Set Volume 3

bid-set

High

Smithsonian National Museum Sanitary and Storm Systems Bid Set Design Manual

sow

High

Smithsonian National Museum Sanitary and Storm Systems Bid Set Volume 1

bid-set

High

Smithsonian NMNH Upgrade Sanitary and Storm Systems Bid Set Volume 2 Plumbing

bid-set

High

Solicitation 33330226RF0010002 NMNH Upgrade Sanitary and Storm System

rfp

High

Standard Form 25A Payment Bond

2 pages · payment-bond

High

Standard Form 25 Performance Bond

2 pages · performance-bond

High

Smithsonian Institution Release of Claims Form

1 page · release-of-claims

Low

AI Contract Breakdown

Uniform Contract Format

Timeline

5 updates

PhaseAwarded

PostedFeb 20

Presolicitation

Type ChangedMar 12

Presolicitation → Solicitation

Notice updatedApr 2

The notice description changed.

Notice updatedApr 21

Response deadline changed from May 12, 2026 to May 20, 2026. The notice description changed.

Notice updatedApr 28

The notice description changed.

Notice updatedMay 7

The notice description changed.

Notice updatedMay 14

Response deadline changed from May 20, 2026 to Jun 3, 2026. The notice description changed.

AwardedSep 24

Contract was awarded

Submission Closed

06/03/2026, 07:00:00 PM UTC

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Organization & Contact Information

AgencySmithsonian Institution

Contacts2 people available

OfficeARLINGTON, VA, 22202, USA

Organization / AgencySmithsonian Institution

Office AddressARLINGTON, VA, 22202, USA

Contacts

Virginia Chan

contact@example.gov

Christine Grant

contact@example.gov

Full Description

Amendment 0005 to the RFP is hereby issued and attached for download. The purpose of the amendment is to make the following changes to the Solicitation:

Responses to RFIs for Questions 76-82

Addendum #1

Bid Due Date Extension

---------------------------------------------------------------------------------------------------------

Amendment 0004 to the RFP is hereby issued and attached for download. The purpose of the amendment is to make the following change to the Solicitation:

Presentation Slides

---------------------------------------------------------------------------------------------------------

Amendment 0003 to the RFP is hereby issued and attached for download. The purpose of the amendment is to make the following changes to the Solicitation:

Responses to RFI’s for Questions 1-75

Updated Multi-Year Document

---------------------------------------------------------------------------------------------------------

Amendment 0002 to the RFP is hereby issued and attached for download. The purpose of the amendment is to make the following changes to the Solicitation:

2nd Site Visit

RFI Due Date Extension

Bid Due Date Extension

---------------------------------------------------------------------------------------------------------

Amendment 0001 to the RFP is hereby issued and attached for download. The purpose of the amendment is to make the following change to the Solicitation:

03/27 Site Visit Sign-in Sheet

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The Smithsonian Institution is seeking offers to upgrade Sanitary and Storm Systems project at the Smithsonian Institution's National Museum of Natural History located at 10th Street and Constitution Avenue NW, Washington, DC, as described herein and the Contract Documents, including, without limitation, in the Specifications and Drawings for SF Project No. 1600103 both dated December 5, 2025.

All of the requirements which the successful Offeror must meet concerning this project are set forth in detail in the solicitation Documents included with this Request for Proposal. Upon receipt of Technical and Cost Proposals and the selection of a successful Offeror, the Smithsonian Institution will execute a Fixed Price construction contract. The Smithsonian currently estimates that the fixed price for the entire project will exceed $10 Million.

The scope of this project includes the installation of a new sanitary and stormwater system throughout the Museum Main Building, East and West Wings to replace the existing infrastructure that has reached the end of its service life. Work must be executed with extreme care to protect the museum’s collections, exhibits, and research operations, and preserve its historic architecture features.

The major elements of work include, but are not limited to, the following:

Installation of new sanitary and stormwater piping systems through the Main Building, East and West Wings in accordance with construction documents.
Rerouting stormwater and sanitary piping where possible to avoid passage through the ceiling of exhibit halls, collection storage areas, and other sensitive or restricted spaces.
Capping off abandoned piping, where feasible, isolating it from active systems and preventing future infiltration or structural compromise.
Removal and disposal of old piping where capping is not feasible, in compliance with environmental regulations and structural safety standards.
Lead and asbestos abatement, as necessary, in areas affected by demolition or pipe removal, in accordance with applicable EPA, OSHA, DOT, District of Columbia law and regulations and others as cited in the specification.
Installation of new sanitary and storm piping within the existing tunnel system, including structural support, penetrations, and insulation where required.
Tie-in of new systems to the existing SI stormwater and sanitary infrastructure external to the building, with proper alignment, connection materials, and testing.
Develop and implement a comprehensive erosion and sediment control plan in compliance with EPA Construction General Permit and District of Columbia regulations.
Inspect, remove and replace roof scuppers including sealing and integration with the building stormwater management system to restore proper drainage performance.

All work must be conducted in accordance with applicable codes, historic preservation requirements, safety regulations, and Smithsonian Institution design and construction standards. Phasing plans must minimize disruption to ongoing museum operations, protect the public, and preserve the integrity of historic and scientific assets.

PRE-BID TOUR OF THE SITE

The Pre-proposal meeting is scheduled for Friday, March 27, 2026, at 9:00 AM Eastern Time.

REQUEST FOR CLARIFICATIONS

It is requested that all questions be sent in no later than April 14, 2026.

THE PROPOSAL DUE DATE IS TUESDAY, MAY 12, 2026, at 3:00 PM EASTERN STANDARD TIME (EST).

The subcontracting goals for this project are: 40% with small business concerns. At least 7% with Service-Disabled Veteran-owned small businesses (SDV).

Davis Bacon Building Wage Determination DC20260002 shall apply.

The Period of Performance for the Base Contract and Options 1-3, if exercised, is 740 Calendar Days from the date of Notice to Proceed.