Sol_140P4325R0021_Amd_0002.pdf

(x)

140P4325R0021 x x

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.

x

Boston MA 02129-4543

PNN

Building I-1 Charlestown Navy Yard Boston National Historical Park

NPS, NER - NE MABO

06/18/20250002

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

05/22/2025

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.)

The purpose of this Amendment is to provide a response to all questions received, and to extend the hour and date for receipt of offers.

Therefore:

1. A response to all questions received is provided in the attached continuation pages.

2. The hours and date for receipt of offers is extended to 10:00 am ET on June 25, 2025.

Period of Performance: 07/01/2025 to 08/31/2026

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)

Jason Albright

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 .

Request for Proposal Number 140P4325R0021 Replace Air Handler and Upgrade Controls at LTC at Lowell National Historical Park Amendment 0002

DESCRIPTION OF AMENDMENT/MODIFICATION

The following are a list of questions received for the Solicitation Number 140P4325R0021, Replace Air Handler and Upgrade Controls at LTC at Lowell National Historical Park.

1) Attachment 1 – SCOPE OF WORK, fourth paragraph, AMEND AS FOLLOWS:

From: Tom Barone, Trane Commercial– New England can be reached at (781) 779- 9700.

To: Contact your local Trane office for material and/or service quotes.

2) Please confirm the acceptable method for removing the existing AHU through the louver. Is temporary removal of any exterior structure permitted?

Answer: Only the louver and frame shall be removed, and reinstalled. The Masonry and granite sill shall not be disturbed.

3) There is a broken glass in the window where we are planning to take out the old unit. Does the contactor need to carry the cost replace the glass? Attached photo for reference.

Answer: Yes, the contractor shall carry the cost.

Amendment 0002

4) Are there any load restrictions or requirements for using the elevator or stairs during equipment transport to the second floor?

Answer:

Weight Rating is 2,500 lbs.

Interior Walls of Elevator shall be protected.

5) Please confirm available ampacity and breaker type at the sub-panel marked for new unit connection.

Answer: Existing Unit is on a 70amp Breaker, the subpanel Main is rated at 400amp.

6) Please confirm who will provide final programming of the Trane DDC integration (NPS in-house or third-party integrator)? Who will carry the cost for this work NPS or contractor?

Answer: Contractor shall carry the cost for the final programming for the Trane Building Control System.

7) Please share the contact for Trane DDC integration.

Answer: Contact your local Trane office for material and/or service quotes.

8) Does the new mini-split needs to be on the Trane DDC integration system?

Answer: No.

9) What is the current Trane controller model and software version in the building?

Answer: Current building BAS system is Johnson controls. With no remote access.

10) Is there an available point map or sequence of operations from the existing BAS for review prior to submittal?

Answer: No.

Amendment 0002

11) Are there any specific finish restoration requirements if conduit or mechanical fasteners are installed on historical walls or ceilings?

Answer: Refer to SPECIFIC ENGAGEMENT WITH HISTORICAL FABRIC stipulations noted on the Scope of Work. Any exposed fasteners shall be submitted for approval.

12) Please confirm who is responsible for securing the city building permit – the contractor or NPS?

Answer: The Contractor.

13) Can the commissioning report format or sample be provided in advance to ensure alignment with NPS expectations?

Answer: Commissioning report shall follow industry standard formatting.

14) Are the new units to be connected to existing building controls or does the customer require the new units to be BACnet compatible for the option to connect to building controls in the future?

Answer: The new units shall be connected to existing building controls.

15) If a direct replacement of the existing 10 ton Trane package unit is no longer in production, does the customer have a preference for system type or is it up to the contractor's discretion to provide the customer with suitable options?

Answer: The contractor shall bid a suitable packaged unit that meets the SOW requirements and provide a submittal for approval after award. Paragraph 3 of the SOW describes what the design intention is based on and that an alternate replace in kind design is acceptable.

16) Is the new system required to bring in a certain percentage of outside fresh air into the space?

Answer: The new system should meet all the current HVAC codes for fresh air requirements.

Amendment 0002

17) Is this work to be done during normal business hours or after hours?

Answer: Work is preferred to be done during normal business hours but could be done outside of normal business hours or weekend with an approved and coordinated schedule.

18) The following list of attendees were present at the site-visit on June 6, 2025:

19) Attachment 1 – SCOPE OF WORK, second page, AMEND AS FOLLOWS:

From: SPECIFIC ENGAGEMENT WITH HISTORICAL FABRIC

6. Coring through existing floor/ceiling construction (historical floors / ceilings), NOT allowed unless able to run through existing penetrations.

To:

6. Coring through existing floor/ceiling construction (historical floors / ceilings), NOT allowed unless unable to run through existing penetrations.

Amendment 0002

20) Attachment 1 – SCOPE OF WORK, third page, AMEND AS FOLLOWS:

From:

New construction scope of work items:

Item 1.:

c. Use the shortest structurally sound fasteners able to hold new door frames.

To:

c. Use the shortest structurally sound fasteners as required.