The U.S. Army Corps of Engineers, Los Angeles District, posted an active pre-solicitation notice for environmental remediation and site restoration at Air Force Plant 44 and Davis-Monthan Air Force Base in Arizona, and Nellis Air Force Base in Nevada. Work is expected to cover 17 Installation Restoration Program sites and 10 Military Munitions Response Program sites, including investigation, design and construction of remedial systems, remedy operation and maintenance, and optimization over an estimated 10 years. The notice is not itself a request for proposals or an invitation for bids; the formal solicitation is expected to be advertised in late November 2026.