Purpose: This guidance manual prescribes the requirements of the Radiation Protection Program of the US Army Corps of Engineers (USACE) contained in Engineer Regulation (ER) 385-1-80, Ionizing Radiation Protection, and Engineer Manual (EM)385-1-1, Safety and Health Requirements Manual. It is to be used when activities utilize or handle radioactive material (which includes radioactive wastes) or a radiation generating device. Radiation generating devices include Xray equipment, accelerators, lasers, radio-frequency and electromagnetic field generators. Authoritative guidance and regulations are contained in 10 CFR (Energy) and the NRC Regulatory Guides, 29 CFR (Labor) 1910 and 1926 OSHA regulations, and 40 CFR (Protection of the Environment). This manual is intended to assist USACE Commands in integrating essential requirements contained in Federal, DA and USACE radiation protection regulations to ensure that the safety and health requirements of all agencies are met. This manual is applicable to USACE personnel and visitors to a worksite under the jurisdiction of USACE where radioactive material or a radiation generating device may be present. It shall be used in conjunction with ER 385-1-80 and EM 385-1-1. Contractor requirements concerning ionizing and non-ionizing radiation protection issues are contained in EM 385-1-1.