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 14, 2025, for the former Nebraska Ordnance Plant. The open house will be at the main groundwater treatment plant in Ashland, Nebraska located at the junction of County Road 6 and County Road F.