The U.S. Army Corps of Engineers plans to award one firm-fixed-price purchase order for a heavy-duty electric remote-controlled slope mower. The unit must safely mow extreme inclines, emphasize operator safety, offer low-clearance stability, and use zero-emission or highly efficient power for extended field operations. An amendment revised specifications for service center radius, unit maximum height, propulsion uniformity, power configuration, and delivery location. Delivery will be FOB Destination to Lake Ashtabula/Baldhill Dam in Valley City, ND 58072.