Sometime during the 195Os, munitions were en route to Offutt Air Force Base by air transport when six leaking chemical rounds were discovered. The leaking rounds were removed at the Nebraska Ordnance Plant in Mead, taken to the property office, and subsequently buried.

Since that time the land was acquired by the University of Nebraska, which converted the area in which the munitions were buried to a four-acre landfill. In 1991, workers digging a trench in or around the landfill noted a 'green-colored gas' coming out of the ground. The Army’s Technical Escort Unit recommended that no further action be taken at that time. The work was discontinued and the area was backfilled, and later capped in 1993.