GUIDANCE RECOMMENDATIONS (REVISED) In order to assure the protection of persons in the general population by limiting the radiation doses that an individual in a critical segment of the population may receive from concentrations of transuranium elements present above average background levels in the general environment, the following recomendations shall apply for the guidance of Federal agencies: 1. Dose rates to persons in the general population for continuing exposure to transuranium elements should not excced the recommendations provided in Federal Radiation Guidance Wo. 1, and reasonable efforts should be made to keep all exposures as low as reasonably achievable. 2. Contamination levels in the general environment should be limited to assure that the annual alpha radiation dose rate to members of the critical segment of the exposed population as the result of exposure to transuranius elements not exceed either: ‘a. 1 millirad per year to the pulmonary lung, or b. 3. 3 millirad per year to the bone or 40 millirad per year to the bone surfaces. For newly contaminated areas, the Federal agency responsible for implementation of these recommendations should take immediate action to minimize both the residual levels of transuranium elements in the general environment and the radiation exposure of the general public. Determination and implementation of further appropriate measures, to ensure that projected dose rates to persons in the general population are as low as reasonably achievable and in full compliance with the above recommendations, should begin as promptly as possible and should be completed within a reasonable period of time.