The Department of Defense, specifically the U.S. Army Corps of Engineers Portland District, intends to negotiate a sole source contract with the Confederated Tribes of the Umatilla Indian Reservation (CTUIR) for site condition monitoring related to historic properties of cultural significance. The objective of this procurement is to monitor and document the physical dynamics at designated sites, assess impacts such as erosion and vandalism, and provide recommendations for future management and monitoring strategies. This initiative is crucial for compliance with the National Historic Preservation Act and to ensure effective long-term management of cultural resources within the ceded territory of the CTUIR. Interested parties may submit capability statements to the contracting officer by 10:00 AM Pacific time on April 7, 2025, with no solicitation being posted for competitive proposals. For inquiries, contact David Cook at david.m.cook@usace.army.mil or Justin Figueredo at Justin.F.Figueredo@usace.army.mil.