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U.S. Department of Energy
Office of Scientific and Technical Information

Annual environmental monitoring report, January--December 1977

Technical Report ·
OSTI ID:6689382
During 1977, the Rocky Flats Plant conducted an environmental monitoring program that included the sampling and analysis of air, water, and soil on and off the plant site. Also, measurements of penetrating-radiation dose in the environment were made using thermoluminescent dosimeters (TLD's). Particulate samples were collected from air samplers that operated continuously at distances of 3 to 6 kilometers (2 to 4 miles) from the Plant and in 12 communities that range approximately 19 to 26 kilometers (12 to 16 miles) from the Plant. Analysis of these samples indicated that the levels of airborne plutonium in communities surrounding the Plant were within the range attributed to fallout from atmospheric nuclear weapons testing. During 1977, all sanitary wastes were processed through a tertiary treatment facility before being discharged from the Plant. Five daily fluoride concentrations exceeded the daily maximum limitation of 1.7 mg/l. Two daily biochemical oxygen demand concentrations exceeded the daily maximum limitation of 25 mg/l. The plutonium, uranium, americium, and tritium radioactivity concentrations measured in Great Western Reservoir and in Standley Lake during 1977 were found to be less than 0.08 percent of the applicable RCG. Plutonium, uranium, and americium radioactivity concentrations measured in the drinking water from nine communities in the area averaged less than 0.04 percent of the applicable RCG. Analysis of 57 soil samples collected during 1977 indicated little change in the plutonium concentration in soil. An assessment was made of the potential Plant contribution in 1977 to public radiation dose. Results indicated that the maximum individual dose for that year at the Plant perimeter was approximately 0.17 millirem per year. Total dose to the population living within 80 kilometers (50 miles) was calculated to be 208 man-rem.
Research Organization:
Atomics International Div., Golden, CO (USA). Rocky Flats Plant
DOE Contract Number:
EY-76-C-04-3533
OSTI ID:
6689382
Report Number(s):
RFP-ENV-77
Country of Publication:
United States
Language:
English