REQUEST FOR PROPOSAL; HMIS RFP# 378136 REV. 04

REV. 04: See Addendum 004 for additional responses to Questions and Answers REV. 03: See Addendum 003 for responses to Questions and Answers REV. 02: See Addendum 002 for responses to Questions and Answers REV. 01: (PT) to New Proposal Due Date of July 9, 2025; 4:00 PM (PT)

Presentation Timeline: After proposal review and determination of selected Offeror (down select list); Procurement will reach out to schedule the project presentations. Timeline is now updated to between July 28, 2025 - August 6, 2025. Please ensure your availability during this period to facilitate the scheduling of the presentation. Additional notes: Attachment Performance Work Statement (PWS) Attachment 1 – PWS-Req.

378136 Rev. 0 - Peoplesoft Professional Support o Version remains Rev. 0 as this was an inadvertent upload. PWS section 5, Acceptance Criteria should not list an Appendix D as it does not exist. Question (Q) & Answer (A) See Attachment for RFP 378136-Q&A (includes pre-proposal Q&A) - Addendum 001 All questions are to be directed to the Procurement Specialist via email and cc Zakery (Zak) Reams.

Hanford Mission Integration Solutions, LLC. (HMIS) requests proposals for Implementation professional services for PeopleSoft Enterprise Resource Planning:

Finance and Human Capital Management: Human Resources. The requested work is in support of Hanford Mission Essential Services Contract (HMESC) Prime Contract 89303320DEM000031 with the U.S. Department of Energy, Richland Office. Information regarding the submission of a proposal is contained in the attached Solicitation.

Proposals are to be prepared in accordance with the instructions and conditions set forth herein. • Intent to Bid: Due by June 18, 2025; 4:00 PM (PT) • Preproposal Conference/Meeting: Set-up via remote “Teams” method only, June 23, 2025; 1:00 PM – 2:00 PM, (PT) • Questions | Comments (including technical) regarding the Solicitation | RFP are due by: June 26, 2025; 1:00 PM (PT) or sooner ? Proposals are to be received by: July 3, 2025; 2:00 PM (PT) ?

Proposal submission will include proposed costs for Period of Performance schedules below for evaluation. o Base Year – TBD, 2025 – TBD, 2026 o Option 1 – TBD, 2026 – TBD, 2027 ?

Presentation Timeline: After proposal review and determination of selected Offeror (down select list); Procurement will reach out to schedule the project presentations between July 21, 2025 thru July 30, 2025. Please ensure your availability during this period to facilitate the scheduling of the presentation. ? Please return ALL completed RFP Exhibits and Attachments (if applicable) with proposal submission