Addendum 1 to RFP No 6-JV79-P-00119-00.doc

Jackie Arriaga Subcontracts Procurement Manager

Office of the Chief Financial Officer

Procurement Department

Argonne National Laboratory

9700 South Cass Avenue, Bldg. 201

Lemont, IL 60439

Phone: (630)252-0978 Email: arriaga@anl.gov

March 20, 2026

TO ALL OFFERORS:

Subject:

Pre-Proposal Conference Information and New Enclosure Request for FORMDROPDOWN No. 6-JV79-P-00119-00 Addendum No. 1 Attached herewith for your information and use in preparing your proposal for subject project is Addendum No. 1.

Kindly acknowledge receipt of this Addendum by signing and returning a copy of this letter via email.

Sincerely, Procurement Department

Receipt Acknowledged:

Company:

By:

cc:

File

CF

Addendum No. 1

TO

REQUEST FOR FORMDROPDOWN

6-JV79-P-00119-00

REF Text6 \h

\* MERGEFORMAT

FOR

Argonne National Laboratory

BLDG. 201 OCF

9700 S. Cass Ave.

Lemont, IL 60439

March 20, 2026 This addendum is being issued to modify the subject FORMDROPDOWN as follows:

1. Confirming the Pre-Proposal Conference is scheduled for Friday, March 31, 2023. Please see agenda listed below:

· 9:00am – MS Teams Meeting begins

· 9:00 – 9:15am Introduction of ANL personnel and attendance

· 9:15 – 10:00am Review SOW/Requirements, ANL site map overview, and key RFP information/instructions

· 10:00 – 10:30am Question and Answer Session

· 10:30am Conclude

2. Requesting responses (from any attendees who have not yet notified arriaga@anl.gov) by 3:00 PM CT Monday, March 23, 2026 with the full legal name of attendees, and company name, interested in attending the Pre-Proposal Conference. Procurement will review and confirm availability.

3. Please see optional virtual meeting information/link below for the 9:00 AM to 10:30 AM CT timeslot of the agenda to go over introductions and brief overview of the SOW and RFP requirements.

All questions that Argonne answers during the pre-proposal meeting will be confirmed in writing via an addendum to the solicitation.

Microsoft Teams meeting

Join: https://teams.microsoft.com/meet/23909037429724?p=N9tV9HoD4HBuBa4Eav

Meeting ID: 239 090 374 297 24

Passcode: rD2rk9Vd

Need help? | System reference

Dial in by phone

+1 630-556-7958,,933674544# United States, Big Rock

Find a local number

Phone conference ID: 933 674 544#

For organizers: Meeting options | Reset dial-in PIN

The Laboratory reserves the right to amend the above-mentioned instructions at any time.

4. Small Business and Small Disadvantaged Business Model Subcontracting Plan. If there will be any subcontracting opportunities in performing the Appendix “B” Statement of Work, they shall be identified (Enclosure No. 2.H.) This plan is not required to be submitted with the proposal but will be required from the successful offeror if they are a Large Business. The Laboratory will examine the plan to determine its acceptability. The accepted plan will be included in any resultant contract. The requirement for submittal of a subcontracting plan does not apply if the successful offeror is a small business concern.

A copy of the Sample Small Business Plan is included as Enclosure 2.H., Small Business Subcontracting Plan, ANL-372 (January 24, 2025) to the RFP.

ALL OTHER TERMS AND CONDITIONS OF THE ABOVE REFERENCED RFP REMAIN THE SAME.

Attachments: 1 U. S. Department of Energy laboratory managed by UChicago Argonne, LLC