Addendum and Acknowledgement Doc.doc

This is an Addendum (No. 001) to Request for Proposal 6-S176-Q-00157-00 issued by Argonne National Laboratory's Procurement Department on February 18, 2026. The addendum modifies the original solicitation for Building 350 Chiller Replacement Phase II by clarifying and expanding the specification document references. Specifically, it adds document "J350-158-W-M0501" to the solicitation requirements, which relates to the performance criteria that the water-cooled chiller with variable speed, oil-free centrifugal compressor must meet as referenced in the original specification document "J350-158-W-M501." Offerors are required to acknowledge receipt of this addendum by signing and returning a copy of the letter via email to the Procurement Department.

The addendum is issued under the Department of Energy Office of Science and applies to the solicitation evaluated on Lowest Price, Technically Acceptable criteria. Offerors must submit completed and signed ANL-70 and ANL-70B forms along with an offeror-provided specification document evidencing compliance with mandatory technical requirements. The original solicitation deadline is March 1, 2026 at 5:00 PM CST, with questions due to the Contracting Officer by February 20, 2026.