Regulations.gov document: USGS. Methods for Determination of Radioactive Substances in Water and Fluvial Sediments, Chapter A5 of Techniques of Water-Resources Investigations of the United States Geological Survey, 1977. Available at U.S. Geological Survey (USGS), Books and Open File Reports Section, Box 25425, Federal Center, Denver, CO 80225-0425. 100 pp. [PHASE-3-AM-IV-B-12] — retained record — High Signal
Regulations.gov document: USGS. Methods for Determination of Radioactive Substances in Water and Fluvial Sediments, Chapter A5 of Techniques of Water-Resources Investigations of the United States Geological Survey, 1977. Available at U.S. Geological Survey (USGS), Books and Open File Reports Section, Box 25425, Federal Center, Denver, CO 80225-0425. 100 pp. [PHASE-3-AM-IV-B-12]