Annual environmental monitoring report, Rocky Flats Plant, January--December 1974

Results of the environmental monitoring program in the Rocky Flats vicinity indicate that the average environmental concentrations of plutonium in air and water during 1974 were less than 1.72 percent of applicable U. S. Energy Research and Development Administration Radioactivity Concentration Guides. Average concentrations of americium-241 and hydrogen-3 (tritium) in water samples were less than 1.0 percent of applicable USERDA Radioactivity Concentration Guides. The release of Be to the environment was also measured. (U.S.)