Sol_140P4226R0025_Amd_0003.pdf

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 items 8 and 15, and returning or (c) By separate letter or electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT 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.

E. IMPORTANT: is not is required copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

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

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

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

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

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

15C. DATE SIGNED

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

16C. DATE SIGNED

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

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

PAGE

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

PAGESOF

Contractor

The hour and date specified for receipt of Offers to sign this document and return

Wendy De Leon

See continuation page

DOI, NPS, NERO & NER SOUTH MABO

National Park Service Northeast Regional Contracting South/Philadelphia MABO 1234 Market Street, 20th Floor Philadelphia PA 19107

PNC

140P4226R0025

09/17/2026

08/19/2026

1 4

CONTINUATION SHEET

REFERENCE NO. OF DOCUMENT BEING CONTINUED PAGES

NAME OF OFFEROR OR CONTRACTOR

SUPPLIES/SERVICES

(B)

UNIT

(D)

UNIT PRICE

(E)

AMOUNT

(F)

OPTIONAL FORM 336 (4-86)

Sponsored by GSA FAR (48 CFR) 53.110

ITEM NO.

(A)

QUANTITY

(C)

NSN 7540-01-152-8067

140P4226R0025/0003

Replacement of HVAC Systems at Richmond

National Battlefield Park (RICH), PMIS 313918

Amendment 0003 is issued to answer additional question received.

Period of Performance: 10/01/2026 to

05/31/2027

140P4226R0025 Q&A Replacement of HVAC Systems at RICH Page 1 of 2

1. The drawings direct contractors to "Clean all existing ductwork" and "Assume 10' of new ductwork". Is 10 feet intended to be a hard allowance per system or merely an estimate?

The 10 feet of new ductwork is an estimate and is not intended as a hard allowance per system. If additional ductwork replacement is determined to be necessary based on the Contractor's site evaluation, the Contractor shall bring the condition to the COR's attention. Additional ductwork replacement will require a modification.

2. If duct leakage, damaged insulation, or internal contamination exceeds the assumed quantity of duct to be replaced, how will the additional duct replacement be compensated?

The Contractor shall bring any additional ductwork replacement required due to duct leakage, damaged insulation, or internal contamination to the COR's attention.

Additional work will require a modification.

3. Specifications call for test and balance of existing ductwork. Has it been confirmed that dampers are installed at each supply branch duct, and if not, how would that be handled? Is pre-testing required and if so, can you provide airflow requirements?

It has not been confirmed whether balancing dampers are installed at each supply branch duct. If dampers are determined to be missing where required, the Contractor shall bring the condition to the COR's attention. Additional damper installation will require a modification.

Pre-testing of the existing ductwork is not required. Test and balance shall be performed in accordance with the contract documents.

4. Several properties for the project reference attic installations and existing access hatches. Can the owner confirm existing access openings are sufficient to install all specified VAV boxes, air handlers, and heat pumps?

It is believed that the existing access openings are sufficient for installation of the specified equipment. The existing hatches are meet the size of the current equipment installed. Any change in size/configuration of the new equipment may require resizing the opening to install equipment.

5. For refrigerant lines smaller than 1" OD, are pre-insulated copper lines sets acceptable?

Yes

6. Is the Trane Concierge System to be furnished and installed by the HVAC contractor or by a controls subcontractor? The drawings reference the Trane Concierge, but the specifications call for an open cloud-based control system. Please clarify the basis of design and acceptable manufacturers.

The Trane Concierge System shall be furnished and installed by the HVAC Contractor.

Trane Concierge is the basis of design, as the basis-of-design air-handling unit is a

140P4226R0025 Q&A Replacement of HVAC Systems at RICH Page 2 of 2

Trane unit. Other manufacturers are acceptable provided their systems meet the performance and functionality.

7. If deficiencies are found in existing electrical service capacity, is electrical service upgrade work considered:

1. Base Bid

2. Owner Contingency

3. Future Change Order?

Electrical service upgrade work required due to deficiencies in the existing electrical service capacity is considered future change order work and is not included in the Base Bid.

8. For DALT testing of duct systems, what % of ductwork is to be tested and what are acceptable tolerances? How are they to be handled?

1. Base Bid

2. Owner Contingency

3. Future Change Order?

DALT testing shall be performed on 100 percent of the ductwork. Leakage deficiencies in existing ductwork shall be brought to the COR's attention and will require a modification if additional repair or replacement is necessary. Leakage deficiencies in new ductwork installed under this contract shall be corrected by the Contractor at no additional cost to the Government and are included in the Base Bid.

9. At the Watt House Location, we were unable to see equipment installed on the 2nd floor because the doors were locked with no access. Can you please provide photos of areas not available during the site-visit?

The access hatch is ~28" x 28", with a ceiling height of ~72 inches from the top of the ceiling joists to the bottom of the ridge. I currently have no photos of the area available.

Sponsored by GSA FAR (48 CFR) 53.110