The U.S. Department of Energy (DOE) Office of Legacy Management (LM) serves as the long-term steward for sites formerly used in nuclear weapons development and production. After DOE has finished remediation and cleanup of contamination, we assume responsibility for site monitoring and maintenance. LM also treats soil and groundwater to remedy any continuing hazards. We preserve site records, manage retirement benefits for former contractor employees, and work to put land back into beneficial use for communities.