33330226RF0010002 Amendment 00004.pdf

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33330226RF0010002

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1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted ; or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE

RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR

OFFER. If by virtue of this amendment you desire to change an offer already submitted , such change may be made by letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

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OCON

Washington DC 20013-7012 PO Box 37012

MRC 1200

OCON

OCON

Washington DC 20013-7012 PO Box 37012

MRC 1200

SMITHSONIAN INSTITUTION

05/07/20260004

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

12. ACCOUNTING AND APPROPRIATION DATA (If required) is not extended.is extended, Items 8 and 15, and returning

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended , by one of the following methods: (a) By completing

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

FACILITY CODE CODE

10B. DATED (SEE ITEM 13)

10A. MODIFICATION OF CONTRACT/ORDER NO.

9B. DATED (SEE ITEM 11)

9A. AMENDMENT OF SOLICITATION NO.

CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code)

7. ADMINISTERED BY (If other than Item 6)CODE 6. ISSUED BY

PAGE OF PAGES

4. REQUISITION/PURCHASE REQ. NO.3. EFFECTIVE DATE2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO. (If applicable)

1. CONTRACT ID CODE

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

03/12/2026

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority) appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

E. IMPORTANT: Contractor is not is required to sign this document and return __________________ copies to the issuing office.

ORDER NO. IN ITEM 10A.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

A. The Solicitation Number cited above, to upgrade Sanitary and Storm Systems at the

National Museum of Natural History (NMNH), located in Washington, DC, is hereby amended as follows:

A.1. Attached hereto and made part of this Amendment Four is the presentation for the NMNH

Upgrade San and Stormwater solicitation, provided to help explain the concepts reflected in the drawings.

A.1.1. The presentation includes a suggested phasing plan for informational purposes only.

The suggested phasing is not mandatory. Offerors may propose alternate sequencing or phasing approaches, provided the proposed approach satisfies all contract requirements.

Continued ...

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)15A. NAME AND TITLE OF SIGNER (Type or print)

15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 15B. CONTRACTOR/OFFEROR 16C. DATE SIGNED

(Signature of person authorized to sign) (Signature of Contracting Officer)

Thomas Dempsey

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Previous edition unusable

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 10A, as heretofore changed, remains unchanged and in full force and effect .

ITEM NO. SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

NAME OF OFFEROR OR CONTRACTOR

2 14

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGE OF

(A) (B) (C) (D) (E) (F)

33330226RF0010002/0004

Smithsonian reserves the right to evaluate the feasibility and risk associated with any proposed phasing approach.

A.2. Offerors shall acknowledge receipt of all amendments to this solicitation signed and dated and submit with proposal.

B. The Due Date for Receipt of Proposals is May

20, 2026, at 3:00 PM EST.

Except as provided herein, all other provisions, terms and conditions of the Solicitation remain unchanged.

END OF AMENDMENT FOUR

NSN 7540-01-152-8067 OPTIONAL FORM 336 (4-86)

Sponsored by GSA

FAR (48 CFR) 53.110

NMNH UPGRADE SANITARY &

STORM SYSTEM 23 APRIL 2026 (DRAFT)

BUILDING

BACKGROUND

• MAIN BUILDING ORIGINALLY OPENED IN 1910.

• THE EAST & WEST WINGS WERE CONSTRUCTED IN THE 1960s.

• MAIN BUILDING WEST COURTYARD WAS PARTIALLY INFILLED IN

1970s, FULLY INFILLED IN 1990, AND REVITALIZED IN 2017.

• MAIN BUILDING EAST COURTYARD WAS INFILLED IN 1990s.

• CHILLER PLANT AND WING PENTHOUSES WERE CONSTRUCTED IN

1990s.

• THE FACILITY HOUSES MILLIONS OF SPECIMENS AND ARTIFACTS.

• PUBLIC EXHIBITS ARE LOCATED ACROSS 30 GALLERIES IN THE 1910

MAIN BUILDING.

SCOPE OF

RENOVATION

NEED

• STORM & SANITARY PIPING SYSTEMS ARE FAILING IN THE MAIN BUILDING,

EAST WING, WEST WING.

• PIPING SYSTEMS ARE LEAKING AND AT END OF LIFE, INTRODUCING RISK

TO COLLECTIONS AND EXHIBITIONS. FULL PIPING REPLACEMENT (IN LIEU

OF REPAIR) IS NEEDED TO ELIMINATE THIS RISK.

• EXISTING PIPING SYSTEMS ARE LOCATED IN SENSITIVE AREAS, IN

COLLECTION STORAGE AREAS, AND BEHIND EXHIBIT WALLS.

• RESTROOM FACILITES IN THE WINGS HAVE NOT BEEN UPDATED SINCE

THEY WERE BUILT IN THE 1960s. IN ADDITION, MISCELLANOUS

RESTROOMS THROUGH OUT THE FACILITY CURRENTLY HAVE FAILING

PLUMBING.

• THE PROPOSED DESIGN CAREFULLY CONSIDERED IMPACTS TO THE

BUILDING AND DEVELOPED SOLUTIONS AND PATHWAYS TO REDUCE THE

INVASIVE NATURE OF THIS TYPE OF INFRASTRUCTURE REPLACEMENT.

PROJECT

GOALS

• REPLACE THE FAILING SANITARY & STORM PIPING SYSTEMS IN THE MAIN

BUILDING, EAST WING, WEST WING.

• RENOVATE SELECT RESTROOMS IN THE WINGS AND MAIN BUILDING,

INCLUDING MODERNIZATION AND ACCESSIBILITY IMPROVEMENTS.

• MINIMIZE NEW PIPING ROUTED IN EXHIBITS, AND LOCATE IN SERVICE

SPACES

• SAFEGUARD MUSEUM’S COLLECTIONS, VISITORS, AND STAFF BY

ADDRESSING FAILING SYSTEMS.

• MITIGATE THE AMOUNT OF INVASIVE WORK IN SENSITIVE MUSEUM AREAS.

• REDUCE RISKS TO THE COLLECTIONS & EXHIBITS.

• MAINTAIN PUBLIC PROGRAMS DURING CONSTRUCTION.

• MINIMIZE DISRUPTION TO THE MUSEUM’S OPERATIONS.

• PROVIDE FLEXIBILITY TO ADAPT TO FUNDING CHANGES.

MAJOR

ELEMENTS OF

WORK

• NEW PIPING WITHIN EXISTING TUNNELS SYSTEM

• NEW PIPING IN MAIN BUILDING, EAST WING & WEST WING

• REROUTE PIPING TO AVOID EXHIBIT HALLS (MAIN BUILDING)

• TIE-IN EXISTING EXTERIOR INFRASTRUCTURE WITHIN SI

PROPERTY

• IMPLEMENT EROSION AND SEDIMENT CONTROL WITHIN SI

PROPERTY

• INSPECT, ASSESS, REMOVE AND REPLACE ROOF SCUPPERS

CONSTRUCTION PHASING

PHASING

GOALS

• REDUCE IMPACTS TO BUILDING-WIDE OPERATION BY SEQUENCING

IMPROVEMENTS BY BUILDING SECTION (MAIN BUILDING, WEST

WING, EAST WING).

• PHASING DIAGRAMS INCLUDED TO DESCRIBE SYSTEMATIC

REPLACEMENT OF VERTICAL RISERS, ONE RISER/FLOOR AT A TIME.

• PHASING DIAGRAMS INCLUDED TO UPGRADE RESTROOM PIPING,

FLOOR BY FLOOR FOR STACKED FACILITIES.

• LIMIT NORTH LOBBY RESTROOM WORK TO NON-PEAK VISITOR

SEASONS.

• CONTRACTOR REQUIRED TO SUBMIT FORMAL PHASING SCHEDULE &

CONTINGENCY PLAN FOR SI APPROVAL.

SUGGESTED PHASING

PHASE 01A - MOBILIZATION

PHASE 01B – MAIN BUILDING WEST HALL

PHASE 01C- MAIN BUILDING ROTUNDA

PHASE 01D – MAIN BUILDING EAST HALL

PHASE 01E – MAIN BUILDING NORTH HALL

PHASE 01F – MAIN BUILDING EAST RANGE

PHASE 01G – MAIN BUILDING WEST RANGE

PHASE 02 – WEST WING

PHASE 03 – EAST WING

01G

Plan Diagram Illustrating Phases of Work Relating to Section of Building Note: Phase 01 Main Building is Divided into Sub Phases

West Court No Major

Replacement

East Court No Major

Replacement

Chiller Plant No Major Replacement

Note: General Series Sheets provide direction on overall project phasing. Plumbing General Sheets provide direction on working from the top down to implement various parts of the project (Risers, Stacked Bathrooms, Etc.)

CROSS-SECTION FACING NORTH

Main Bldg.

Phase 1

Main Bldg.

Phase 1

Main Bldg.

Phase 1

East Wing Phase 3

West Wing Phase 2

Phases include work in distinct sections of the building

East Court No Major

Replacement

West Court No Major

Replacement

Section Illustrating Phases of Work

Piping Replacement starts at the top and works down in Each

Phase

Note: General Series Sheets provide direction on overall project phasing. Plumbing General Sheets provide direction on working from the top down to implement various parts of the project (Risers, Stacked Bathrooms, Etc.)

WORKING VERTICALLY IN THE BUILDING

The Plumbing section of the documents include direction on Storm Stack Replacement in kind. The drawings indicate a top-down replacement approach. Steps 1-4 of 7 total steps are shown above

Storm Stack Implementation Diagrams

Step 1 Step 2 Step 3 Step 4Existing

WORKING VERTICALLY IN THE BUILDING

The Plumbing section of the documents include direction on replacement of restrooms, which are stacked in various parts of the building.

The drawings indicate a top-down replacement approach. Steps 1-3 of 7 total steps are shown above.

Restroom Renovation Implementation Diagrams

Step 1 Step 2 Step 3Existing

TYPICAL CONSTRUCTION LOGISTICS PLANS

The construction documents include several typical logistics plans illustrating different scenarios where work is performed. The intent of these plans are to isolate work areas and protect adjacent spaces from construction activities. These plans indicate protection requirements as well as collection removal when needed. In total (20) Logistics Plans have been developed for the project and are located in the General Series.

Sample Logistic Plans from Documents