Scientific Investigations Report 2006–5232
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5232
Evaluation of Well-Purging Effects on Water-Quality Results for Samples Collected
from the Eastern Snake River Plain Aquifer Underlying the Idaho National Laboratory,
Idaho
Prepared in cooperation with the U.S. Department of Energy DOE/ID-22200
By LeRoy L. Knobel
Table of Contents
Conversion Factors, Datums, Abbreviations
and Acronyms
Abstract
Introduction
Study Methods
Qualitative Evaluation of Well-Purging
Effects on Water-Quality Results
Quantitative Evaluation of Well-Purging
Effects on Water-Quality Results
Observations
Summary and Conclusions
Acknowledgments
References Cited
Figures
Figure 1. Location of eastern Snake
River Plain, Idaho National Laboratory, and selected wells, Idaho.
Figure 2. Locations of selected wells
near the Idaho Nuclear Technology and Engineering Center and Central Facilities
Area, Idaho.
Figure 3. Water-quality data for well
USGS 20, 1990-2003, with corresponding data for October-November 2003, Idaho
National Laboratory, Idaho.
Figure 4. Water-quality data for well
USGS 34, 1990-2003, with corresponding data for October-November 2003, Idaho
National Laboratory, Idaho.
Figure 5. Water-quality data for well
USGS 35, 1990-2003, with corresponding data for October-November 2003, Idaho
National Laboratory, Idaho.
Figure 6. Water-quality data for well
USGS 36, 1990-2003, with corresponding data for October-November 2003, Idaho
National Laboratory, Idaho.
Figure 7. Water-quality data for well
USGS 37, 1990-2003, with corresponding data for October-November 2003, Idaho
National Laboratory, Idaho.
Figure 8. Water-quality data for well
USGS 38, 1990-2003, with corresponding data for October-November 2003, Idaho
National Laboratory, Idaho.
Figure 9. Water-quality data for well
USGS 39, 1990-2003, with corresponding data for October-November 2003, Idaho
National Laboratory, Idaho.
Figure 10. Water-quality data for
well USGS 40, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 11. Water-quality data for
well USGS 41, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 12. Water-quality data for
well USGS 42, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 13. Water-quality data for
well USGS 43, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 14. Water-quality data for
well USGS 44, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 15. Water-quality data for
well USGS 45, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 16. Water-quality data for
well USGS 46, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 17. Water-quality data for
well USGS 47, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 18. Water-quality data for
well USGS 48, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 19. Water-quality data for
well USGS 50 (perched well), 1990-2003, with corresponding data for October-November
2003, Idaho National Laboratory, Idaho.
Figure 20. Water-quality data for
well USGS 51, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 21. Water-quality data for
well USGS 52, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 22. Water-quality data for
well USGS 57, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 23. Water-quality data for
well USGS 77, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 24. Water-quality data for
well USGS 82, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 25. Water-quality data for
well USGS 85, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 26. Water-quality data for
well USGS 111, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 27. Water-quality data for
well USGS 112, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 28. Water-quality data for
well USGS 113, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 29. Water-quality data for
well USGS 114, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 30. Water-quality data for
well USGS 115, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 31. Water-quality data for
well USGS 116, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Figure 32. Water-quality data for
well USGS 123, 1990-2003, with corresponding data for October-November 2003,
Idaho National Laboratory, Idaho.
Tables
Table 1. Radionuclide concentrations
and gross radioactivity measurements, and associated estimated standard deviations
after purging 1 and 3 borehole volumes of water from selected wells during 2004
and 2005, with statistical comparisons of analytical results, Idaho National
Laboratory, Idaho.
Table 2. Non-radioactive inorganic constituent
concentrations and F-pseudosigma estimated sample standard deviations after
purging 1 and 3 borehole volumes of water from selected wells during 2004 and
2005, with statistical comparisons of analytical results, Idaho National Laboratory,
Idaho.
Table 3. Total organic carbon and purgeable
organic compound concentrations and F-pseudosigma estimated sample standard
deviations after purging 1 and 3 borehole volumes of water from selected wells
during 2004 and 2005, with statistical comparisons of analytical results, Idaho
National Laboratory, Idaho.
Table 4. Tritium and strontium-90 concentrations,
and associated estimated standard deviations after purging 1, 2, and 3 borehole
volumes of water from selected wells during 1991, with statistical comparisons
of analytical results, Idaho National Laboratory, Idaho.
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Send questions or comments about this report to the author, L. L. Knobel, (208) 526-2158.
For more information about USGS activities in Idaho, visit the USGS
Idaho Water Science Center home page.