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Results of 1998 spectral gamma-ray monitoring of boreholes at the 216-Z-1A tile field, 216-Z-9 trench, and 216-Z-12 crib

Technical Report ·
DOI:https://doi.org/10.2172/666258· OSTI ID:666258
 [1];  [2]
  1. Pacific Northwest National Lab., Richland, WA (United States)
  2. Three Rivers Scientific, West Richland, WA (United States)
This document describes the results of fiscal year 1998 vadose zone monitoring of three inactive liquid waste disposal facilities associated with the Plutonium Finishing Plant: the 216-Z-1A tile field, the 216-Z-9 trench, and the 216-Z-12 crib. Monitoring consisted of spectral gamma-ray logging of 21 boreholes. This work was performed by Pacific Northwest National Laboratory in conjunction with Three Rivers Scientific and Waste management Federal Services, inc. Northwest Operations. These three liquid waste disposal facilities were chosen for monitoring because they were identified as containing some of the most significant sources of radioactive contamination in the Hanford Site vadose zone. The basic question addressed by this logging activity is ``Has the configuration of subsurface contamination changed since it was last measured?`` Previous borehole logging and laboratory analyses provide the baseline data to help answer this question.
Research Organization:
Pacific Northwest National Lab., Richland, WA (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC06-76RL01830
OSTI ID:
666258
Report Number(s):
PNNL--11978; ON: DE98058971; BR: N/A
Country of Publication:
United States
Language:
English