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U.S. Department of Energy
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Environmental surveillance at Hanford for CY-1981

Technical Report ·
DOI:https://doi.org/10.2172/5338485· OSTI ID:5338485
Environmental surveillance activities performed by the Pacific Northwest Laboratory for 1981 are discussed. The results are summarized as follows: Radionuclide concentrations and radiation dose measurements were below applicable concentration guides and radiation dose standards. There was no difference detected between airborne radionuclide concentrations in samples collected near to and far from the Hanford Site. A difference in /sup 129/I concentration in Columbia River water downstream compared to upstream was observed. Strontium-90 concentrations downstream remained similar to past years while reduced concentrations were observed in the upstream samples. In addition, /sup 60/Co and /sup 131/I were observed more frequently in the downstream river water samples than in the upstream samples. In all cases, the downstream radionuclide concentrations were small in comparison to DOE radionuclide concentration guides and state and EPA drinking water standards. Low concentrations of radionuclides attributed to operations were observed in wildlife collected onsite. Low concentrations of fallout radionuclides from worldwide atmospheric nuclear testing were observed in foodstuffs and in soil and vegetation; there was no indication of a Hanford contribution to radionuclide levels. The highest penetrating dose rates were in the vicinities of the 100N and 300 Areas. Dose rates at both locations resulted from the presence, within the operating areas, of contained radioactive materials. Nonradiological water quality parameters were all within State Water Quality Standards for the Columbia River. The maximum 50-year whole body dose commitment to an individual from effluents released in 1981 was calculated to be 0.4 mrem. The maximum 50-year dose to a single organ, considering all pathways was approximately 1.3 mrem to the bone, primarily due to /sup 90/Sr in the Columbia River. (ERB)
Research Organization:
Battelle Pacific Northwest Labs., Richland, WA (USA)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
5338485
Report Number(s):
PNL-4211; ON: DE82014904
Country of Publication:
United States
Language:
English