The Department of Defense, specifically the Department of the Army through the W07V Endist St. Louis office, is soliciting proposals for the Rivers Project Office Boundary Maintenance. This project entails the maintenance of the US Army Corps of Engineers (USACE) boundary line along specified sections of the Mississippi and Illinois Rivers, covering approximately 50.05 miles, and includes the replacement of missing and damaged monuments by a certified surveyor for up to 108 surveyor hours. The services sought are critical for ensuring the integrity and clarity of boundary lines, which are essential for land management and conservation efforts. Interested small businesses are encouraged to reach out to Michelle Person at michelle.r.person@usace.army.mil or 314-331-8506, or Angie Grimes at angie.l.grimes@usace.army.mil or 314-331-8965 for further details regarding this total small business set-aside opportunity.