The U.S. Army Corps of Engineers, Kansas City District, will host an Outdoor Open House from 4:30-5:15 p.m. and a Site bus tour will occur from 5:15 p.m. to approximately 7:00 p.m. on Wednesday, May 13, 2026, at the Main Groundwater Treatment Plant in Ashland, Nebraska located at the junction of County Road 6 and County Road F.