A002_1333ND26RNB190022 Site Effluent.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

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

2. AMENDMENT/MODIFICATION NUMBER

A002

000SB

See Schedule

Richard Stevens

The purpose of this Amendment is to provide Government Responses to Quoter Questions.

NB193000-26-00850

1333ND26RNB190022

1 2

JUL 31, 2026

JUN 09, 2026

Q&A # Document Name / Attachment Number

Section and/or Page Number Offeror's Question NIST's Answer

1 Solicitation C.1

At the site visit, drawings of the existing system were shared. Can these be provided electronically so they can be utilized for subcontractor pricing? ( these are included at the end of the solicitation, but are too small to properly read)

Yes, these can be shared. The file exists as a PDF file. Your local printer will need the capability to enlarge.

2 Solicitation C.1 Is there a preferred color for the FRP grating and supports?

Green floor and yellow ladders

3 Solicitation C.1 Please confirm that all components utilized inside the tank are to be explosion proof.

Yes, due to possible methane gas and also serves to waterproof those curcuits.

4 Solicitation C.1 Is it acceptable for the mixer support to be aluminum, as an FRP support may not be strong enough to support its weight and vibration?

A heavy guage stainless may be better. The existing aluminum floor grating has significant degradation

5 Solicitation C.1 Are the PVC exhaust and intake air pipes to be replaced as well?

Yes

6 Solicitation C.1 Will an air balance report be required to verify the intake and exhaust air prior to project completion?

No

7 Solicitation C.1

Is there a make and model for the pH sensor? GF FLAT PH, PT1000, NPT, PH/ORP SUB

SNSR 3/4"T 3-2751-3, PH ELECTR BULB

WET-TAP 3-2756WTP. Most likely the first part

8 Solicitation C.1 Who will perform the final tie-in of the PH sensor to the monitoring panel?

If the awardee is qualified, that is the preferred option or another qualified contractor.

9 Solicitation C.1 Does the exterior ladder to the mixing manhole need replaced?

No

10 Solicitation C.1 The current PH sensor is operated pneumatically. Are the compressor and air lines currently operable, or should we plan to replace them as well?

Replace all interior well piping. Buried exterior piping is not in scope.

11 Solicitation C.2

The electrical for the mixing vault feeds from the Chemical Storage Building subgrade in conduits. Given the amount of corrosion on the electrical piping within the vault, we can assume the connections to the PVC exterior to the vault are also in poor condition. How many feet of excavation and conduit replacement should we assume is required?

Exterior buried electrical conduit and wiring is not in scope.

12 Solicitation Section L.2, ii Please confirm the Organization Chart is excluded from the page limitations.

Confirmed.

13 Solicitation Section L.2, iii For Planned project personnel and qualifications, are resumes acceptable?

Yes.

14 Solicitation Section L.2, iii If resumes are acceptable for iii, please confirm that they are excluded from the page limitations.

Yes, however please ensure resumes are no more than two (2) pages.

15 Solicitation Section L.2

Please confirm a project can still be used even if we do not have a completed CPARS or PPQ for it.

A project may be used without a CPARS or PPQ.

However, it is the Government's request that a reference be provided for that project and that the contractor ensure relevancy and demonstrated capability.

16 Solicitation Section L.2 Please confirm that the cover letter and table of contents do not count towards the page limitations.

Cover Letter and Table of Contents do not count against page limitations.

17 Solicitation Section L.2, V and Vi

Section V states to include three project examples.

Section Vi, list instructions for the Work Assignment narrative, and then mentions section V again, restating similar instructions. Please confirm that only three project examples are required to be included for the prime contractor.

Section vi: Please list all subcontractors and core qualifications for them / similar work

18 Solicitation Section L.2, Vi

Please clarify if proposed subcontractors are to be provided as part of the Section Vi Work Assignment requirements or if we are to list the subcontractors used for our three project examples.

YES.

19 Solicitation Section L.2 The instructions state to include a completed SF 1442, however, a SF 1449 was provided. Please confirm the SF 1449 is the correct form to include.

Confirmed.

20 Solicitation Section L.2

Please clarify the proposal due date. Section L.2 (page 4 of 21) states the proposal is due July 30, 2026, however, it is later stated that proposals are due on August 4, 2026 (page 9 of 21).

The proposal due date is August 4, 2026 at the specified time on page 9.

Site Effluent System, 1333ND26RNB190022

ATTACHMENT 5 - QUESTION AND ANSWER TEMPLATE

Questions due by 12:00 PM EST on Thursday, June 18, 2026 via email to sasha.bradford@nist.gov.