Amend 0006.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

2. AMENDMENT/MODIFICAITON NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicble)

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

STANDARD FORM 30 (REV. 10-83)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICIATION NO.

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 11)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended, is not extended.

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 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram 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 your desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPIRATION DATA (If required)

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

IT MODIFIES THE CONTRACT/ORDER NO. 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

NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, 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)

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

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 OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (No., 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)

NSN 7540-01-152-8070

Previous edition unusable

1 4

AMENDMENT NO. 0006 08/26/26 26-0431

N40085

NAVFAC Mid-Atlantic Resident Officer in Charge of Construction 1107A Birch Street Camp Lejeune, NC 28547-2521

See Item 6

✘ N40085-26-R-9049

07/06/26

26-0431, FY26 Multiple Location BEQ Chiller Flushing and Chemical Cleaning Amendment 0006, Delete Amendment 0005 and Answer Requests for information

The time and date for receipt of proposals is hereby changed to 31 August 2026 at 3:00PM.

This amendment should be acknowledged when your proposal is submitted. Failure to acknowledge the amendment may constitute grounds for rejection of a proposal.

See Continuation Page(s)

N40085-26-R-9049 Amendment 0006

CONTINUATION SHEET

1. Delete amendment 0005 in its entirety.

2. QUESTION: Is this a GEOTHERMAL system?

ANSWER: Yes.

3. QUESTION: We need to know the quantity and location of each piece of equipment that has strainers as well as the type and size of system we are to clean. Can drawings be provided for each building?

ANSWER:

4. QUESTION: The RFI cut off date is 6/22/26 in the RFP. Is that supposed to be 7/22/26?

ANSWER: Yes.

5. QUESTION: UFGS 23 25 00 and Section 23 24 00 (Hydronic Pipe Cleaning) are mentioned in the Project Objective and Location but are not included in the specifications or contract documents. Please provide. Loop clean details provided.

ANSWER: Cold chemical flush will be acceptable to avoid numerous system shut-downs.

6. QUESTION: 2.0 - Passivation / Treatment Chemicals - The required chemical treatment is treatment technology that is not commonly used. We use the industry standard Sodium nitrite/Borate/Azole inhibitor package for closed chilled water systems with a minimum Nitrite (NO2) residual of 600 ppm for system passivation and protection. Is the Verify with drawings and Site Visit an acceptable means and method?

ANSWER: The industry standard Sodium nitrite/Borate/Azole inhibitor package for closed chilled water systems with a minimum Nitrite (NO2) residual of 600 ppm for system passivation and protection is acceptable. Please submit intended process to be used.

7. QUESTION: Can the government provide drawings for the buildings.

ANSWER: Drawings provided on sam.gov. File named “Drawings dtd 8.25.26”.

8. QUESTION: For removing the organic soil. Is there any geothermal system that requires underground high velocity flushing in this job? If so, what building is required? And what

Amendment 0005 is the requirement specs for GPM and FPM, etc. OF the high velocity flushing if it is applicable. Please keep in mind that high velocity flushing could cause leak in the piping loop, coils especially, on the underground and above ground piping.

ANSWER: Refer to the drawings for the type of systems per building. Flush the systems at designed pressures, do not exceed 100 psi. Avoid over-pressuring the system.

9. QUESTION: Does cleaning the strainer in the BEQ VAV and FCUs require escort from the building maintenance. Would the government provide a key for the ceiling access doors?

ANSWER: No, coordination will be between the Contractor and the NAVFAC ET.

10. QUESTION: Does any of the system loops has Glycol? Which buildings? How does it need to be addressed?

ANSWER: None on record

11. QUESTION: Has any of the buildings had a water leak in the past or at the present that needs to be addressed?

ANSWER: None indicated

12. QUESTION: Do we need to replace the strainer if they are damaged or rusty? Please advise.

ANSWER: Contractor shall submit an RFI when they have determined that a strainer needs to be replaced. The Contracting Officer will make a determination if the strainer will be replaced via modification.

13. QUESTION: Does every building have flushing connections?

ANSWER: Contractor to field verify.

14. QUESTION: What buildings (if any) have glycol, and if so, does it need to be replaced?

If replacement is required, what percentage should be replaced?

Amendment 0005

ANSWER: None on record.

15. QUESTION: Phase 1: Install temporary bypass piping upstream and downstream.

Should the system be treated throughout the entire system to ensure the entire system is clean?

ANSWER: Yes, treat the entire system.

16. QUESTION: Is a volume test necessary? As long as the volume can be reasonably estimated, the chemicals can be added in sufficient quantities to achieve a clean water sample.

ANSWER: No, the volume test will not be required if the volume can be reasonably estimated, the chemicals can be added in sufficient quantities to achieve a clean water sample.

17. QUESTION: If the same results can be achieved with a cold cleaning process, can the requirement for a 120 degree F detergent solution be waived? This would help alleviate downtime of the building cooling system.

ANSWER: Cold chemical flush will be acceptable to avoid numerous system shutdowns.

18. QUESTION: Phase 5: Can the UXO 3R Training Requirement be waived? All phases of work will be performed within each building and no digging will be required.

ANSWER: Yes.

19. Delete the requirement for GIS reporting.

20. All other terms and conditions remain unchanged.