Purpose: This engineer manual (EM) contains planning and management guidelines to be used for United States Army Corps of Engineers (USACE) work with radioactive waste, either alone or combined with hazardous or toxic components. This manual primarily describes regulatory and management responsibilities and their relation to the Technical Project Planning (TPP) process and the Project Management Business Process (PMBP) applied to USACE activities at radioactive waste sites. This manual also disseminates USACE policies and provides guidance on how to accomplish those responsibilities. This manual is not intended to provide detailed technical recommendations or sophisticated scientific procedures. The manual will necessarily incorporate some technical information to provide background for the regulatory and management responsibilities. In addition to the Department of Defense (DOD) branches, these responsibilities are defined and enforced by other Federal agencies, including the Nuclear Regulatory Commission (NRC), the Department of Energy (DOE), the Environmental Protection Agency (EPA), the Department of Transportation (DOT), and the Occupational Safety and Health Administration (OSHA). While most of the guidance included will be applicable to work performed outside the United States, other regulatory agencies, dose limits, and radioactive handling and disposal regulations may be applicable.