[en] The results of the effluent and environmental monitoring program for 1983 at the Bettis Laboratory are presented. The results obtained from the effluent monitoring program demonstrate that the existing procedures for controlling liquid and airborne effluents ensure that all such releases during 1983 were made in accordance with applicable Federal regulations. Evaluation of the effluent and environmental data indicates that the operation of the Laboratory continued to have no adverse effect on the quality of the environment. Furthermore, a conservative assessment of the radiation exposure from the small radioactivity releases from the Bettis Laboratory demonstrated that the dose estimates were too low to measure and were well below the most restrictive dose limits prescribed by the Environmental Protection Agency and the Department of Energy. 15 references, 1 figure, 5 tables