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Title: Iodine-129 in forage and deer on the Hanford site and other Pacific Northwest locations

Technical Report ·
DOI:https://doi.org/10.2172/6640419· OSTI ID:6640419

Samples of surface soil, litter, forage, and deer (rumen content, muscle, liver, and thyroid gland) were collected from Bend, Oregon; Centralia, Washington; Wenatchee, Washington; the Wooten Game Range near Dayton, Washington; and on or near the Hanford Site, Richland, Washington. The concentrations of /sup 129/I and /sup 127/I were determined using neturon activation techniques. The purpose of the study was to establish the current levels of /sup 129/I in the environs of the Hanford Site prior to the proposed restart of fuel reprocessing at the PUREX plant. The results of this study clearly demonstrated the longevity of /sup 129/I in the biosphere following gaseous release from a nuclear facility. Analyses of thyroid glands showed that deer living within 160 km (Wooten Game Range) of Hanford had elevated levels of /sup 129/I when compared to the more distant Pacific Northwest locations (Centralia, or Bend). Levels of /sup 129/I in deer thyroid from Bend, or Centralia, (15 fCi/g wet weight), were about five times higher than values reported for the central United States, while, Hanford samples were about 2,700 times higher. The average concentration of /sup 129/I in deer thyroids collected at Hanford in 1978 was similar to samples collected 14 years earlier. The concentrations of /sup 129/I in soil, litter, forage, and other deer samples generally decrease in the order: Hanford > Wooten > Wenatchee > Centralia approx. = Bend. This corresponds to an increase in distance from the Hanford Site.

Research Organization:
Battelle Pacific Northwest Labs., Richland, WA (United States)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
6640419
Report Number(s):
PNL-3357; TRN: 81-004925
Country of Publication:
United States
Language:
English