6913G626R200002 0006.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

Patricia Barnett

See continuation page

VOLPE NAT'L TRANSPORTATION SYS CNTR

220 Binney St.

Cambridge MA 02142-1001

6913G6

6913G626R200002

07/29/2026

06/17/2026

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

6913G626R200002/0006

The purpose of this Amendment 0006 is to:

(1) Formally update technical specifications in the Statement of Work (SOW) and Task Order

Request for Proposals (TORFP) for CLIN 00200;

and

(2) Incorporate official Responses to Requests for Information (RFIs) and clarify Periods of

Performance and invoicing procedures for CLIN

00400 and CLIN 00500.

See attached continuation pages for detailed revisions.

Except as provided herein, all other terms and conditions remain unchanged. The Phase II

Proposal Due Date (July 31, 2026, at 5:00 PM

ET) remains unchanged.

Period of Performance: 09/30/2026 to

09/30/2031

AMENDMENT NO. 0006

SOLICITATION NO. 6913G626R200002

RAIL ROLLING STOCK MODERNIZATION & SUSTAINMENT (RMS) IDIQ

The purpose of this Amendment 0006 is to:

1. Formally update technical specifications in the Statement of Work (SOW) and Task Order Request for Proposals (TORFP) for CLIN 00200.

2. Incorporate official Responses to Requests for Information (RFIs) and clarify Periods of Performance and invoicing procedures for CLIN 00400 and CLIN 00500.

DESCRIPTION OF AMENDMENTS / MODIFICATIONS

SECTION 1: TECHNICAL SPECIFICATION AMENDMENTS (CLIN 00200)

1. CLIN 00200 Statement of Work (SOW), Section 2.9 "BOXCAR FLOORING", Item 2:

o REMOVED: "2. Floor Minimum Load Rating 50,000 pounds per square foot, (50K)."

o INSERTED: "2. Floor Minimum Load Rating 25,000 pounds per square foot, (25K)."

2. CLIN 00200 TORFP, Section 3.2 "Volume II: Phase II Technical Proposal", Factor 1

(Flooring Load Rating):

o REMOVED: "Detail the technical specifications of the 2-3/8 inch tongue and groove pine flooring applied by stud welding, proving it meets the minimum load rating of 50,000 lbs per square foot."

o INSERTED: "Detail the technical specifications of the 2-3/8 inch tongue and groove pine flooring applied by stud welding, proving it meets the minimum load rating of 25,000 lbs per square foot."

SECTION 2: RESPONSES TO REQUESTS FOR INFORMATION (RFIs)

Q23: In reference to CLIN 00400 and CLIN 00500, CLIN 00400 specifies that the period of performance is six months from the date of the task order award. CLIN 00500 specifies that the period of performance is one year from the award date. My question is whether payment will only be made when all tasks are completed. For CLIN 00400, up to one year? And for CLIN 0050, six months from the date of the award? Or are we able to invoice sooner? Such as when each location is completed or even monthly.

A23: Clarification on Periods of Performance: Please note that the Periods of Performance as established in the solicitation are:

• CLIN 00400 (Safety Inspections): One Year (365 Days) from date of task order award.

• CLIN 00500 (Technical Field Support/Repairs): Six (6) Months from date of task order award.

Invoicing Procedure: Invoices for CLIN 00400 and CLIN 00500 may be submitted incrementally upon completion of each individual task (i.e., following Government inspection and written acceptance of each inspection or repair per location, as applicable). Submission of invoices does not require full completion of all fleet tasks under the order prior to payment.

Q24: CLIN 00200: Both the Task Order and the SOW indicate 50k lb. floor rating. (Is this correct, or should the limit be 25K?)

A24: The floor minimum load rating specification has been amended from 50,000 lbs. (50K) to 25,000 lbs. (25K) per square foot. See Section 1 of this amendment for formal solicitation and SOW text changes.

SECTION 3: SOLICITATION TERMS & ACKNOWLEDGMENT

1. ELIGIBILITY REMINDER:

As established in Phase I of this solicitation, only prospective Prime Contract holders under the Rail Rolling Stock Modernization & Sustainment (RMS) IDIQ pool who successfully participated in the Phase I advisory down-select process are eligible to submit Phase II proposals.

2. PROPOSAL SUBMISSION DEADLINE:

The Phase II Proposal Due Date remains unchanged: July 31, 2026, at 5:00 PM Eastern Time.

3. ACKNOWLEDGMENT OF AMENDMENT:

Offerors must acknowledge receipt of Amendment 0006 prior to the hour and date specified for proposal submission by completing and returning a copy of this SF-30 with Volume III (Price Proposal) or by explicit acknowledgment in the Phase II Proposal Cover Letter.

EXCEPT AS PROVIDED HEREIN, ALL OTHER TERMS AND CONDITIONS REMAIN

UNCHANGED AND IN FULL FORCE AND EFFECT.

End of Amendment No. 0006

Sponsored by GSA FAR (48 CFR) 53.110