1333ND25RNB1900090004.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: Contractor is not is required to sign this document and return 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. The hour and date specified for receipt of Offers 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 OF PAGES

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

See Attachment Page.

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1333ND25RNB1900090004 AUG 13, 2025 NB195000-25-00012

000SB

NATIONAL INST OF STDS AND TECHNOLOGY

100 BUREAU DRIVE STOP 1640

BUILDING 301 ROOM B129

GAITHERSBURG MD 20899-1640

See Block 6

1333ND25RNB190009

JUL 22, 2025

See Schedule

Attachment Page

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Table of Contents

SECTION J LIST OF ATTACHMENTS

J.1

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SECTION J

LIST OF ATTACHMENTS

J.1

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Q41: Is the new control panel hooked into any BAS system? If so, who is the controls contractor for the building?

Response to Q41: Yes, the new control panel of the ESS will be monitored (not controlled) by the BAS. The BAS will monitor the pH level (high and low binary readings). The controls contractor is:

Albireo Energy 985 Waugh Chapel Way, Suite H Gambrills, MD 21054

Q42: Is the piping from the new 300 gal tank a tubing like what is currently in place or is the new installed piping to be a nominal size, 1/2”, 3/4” 1”?

Response to Q42: The pipe that the contractor installs shall be polypropylene, double walled, containment with heat tracing, insulation, and metal protection. Currently, tubing is in place routed through a PVC pipe (tubing is not recommended for the new installation).

We have documentation from a previous upgrade that indicates a pipe size of 1” x 2” double wall containment. Ultimately, however, the contractor is responsible to verify the pipe size.

Q43: Is the new 300 gal mixing tank to be placed in the same location as the existing 55 gal tank? If so, it is possible that the new tank will obstruct the existing light switch and receptacles based on the dimensions of the new tank.

Response to Q43: The chemical tank shall not obstruct the existing light switch. The shall identify the proposed location of the chemical tank in its proposal.

Q44: The existing tank does not have a water supply. The new tank is a mixing tank and requires water (3" inlet on top of tank). Can the contractor tie into the existing eyewash plumbing (domestic cold) for the mixing tank water supply?

Response to Q44: Yes.

Q45: One of the listed ESS subsystems is "freeze protection". Is this a component built into the new ESS or is this referencing the existing heat trace on the piping that contains the chemical solution tubing?

Response to Q45: The term “freeze protection” refers to the sump heater inside of the ESS and the heat tracing on the chemical piping.

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Q46:

ESS.

Response to Q46: The contractor shall provide new piping.

Q47:

these connections be piped to?

Response to Q47: Vent to outside (atmosphere), drain to lab waste drain, o waste drain.

Q48: Can DDC work be performed during normal working hours (Monday following installation)?

Response to Q48: Yes, if it does not interrupt unrelated systems connected to the BAS.

Q49: With the 72-hour window to remove existing scrubber and the have new scrubber operational by the following Tuesday morning can you please verify how early work can begin Saturday morning? We anticipate Saturday as the day the crane and new equipment will be on site and the building will be empty per NIST requirements.

Response to Q49: That is at the discretion of the contractor.

Q50: Can most of the existing piping that extends from the scrubber to the building under the catwalk be reused? We would demo back as far as needed to properly connect the existing piping to the new scrubber.

Response to Q50: No, the contractor shall provide new piping.

Q51: Is there operational heat trace for freeze protection on the existing piping and can this be reused? Or should bidders plan on removing metal jacket and insulation on all existing piping to replace the heat trace?

Response to Q51: The contractor shall plan to remove all piping which includes the metal jacket and insulation on all existing piping to replace the piping, insulation and heat trace.

Q52: Will the existing chemical feed pump be reused or should bidders include a new chemical feed pump?

Response to Q52: Bidders should include a new chemical feed pump.

Q53: Are there any requirements regarding Citizenship to work at the NIST Campus?

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Response to Q53: All contractor and subcontractor personnel must either be U.S. citizens or have a Permanent Resident Card) that allows them to live and work permanently in the United States.

Q54: During the site visit, we were informed that pictures of the jobsite would be shared.

Response to Q54: Yes. See photos included with this amendment to the solicitation.

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