Second Quarter 2007
INL Quarterly Site Environmental Report
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S.M. Stoller Corporation
Environmental Surveillance, Education and Research Program
ISSN NUMBER 1089-5469
Stoller-ESER-107
Idaho National Laboratory Offsite Environmental
Surveillance Program Report:
Second Quarter 2007
November 2007
Contributors:
Marilyn Case, Russ Mitchell
Program conducted for the U.S. Department of Energy, Idaho Operations Office
Under Contract DE-AC07-06ID14680
By the S. M. Stoller Corporation,
Environmental Surveillance, Education and Research Program
Douglas K. Halford, Program Manager
120 Technology Drive, Idaho Falls, Idaho 83402
www.stoller-eser.com
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None of the radionuclides detected in any of the samples collected during the second quarter of 2007 could not be directly linked with INL Site activities. Levels of detected radionuclides were no different than values measured at other locations across the United States or were consistent with levels measured historically at the INL Site. All detected radionuclide concentrations were well below guidelines set by the U.S. Department of Energy (DOE) and regulatory standards established by the U.S. Environmental Protection Agency (EPA) for protection of the public. |
This report for the second quarter of 2007 contains results from the Environmental Surveillance, Education and Research (ESER) Program’s monitoring of the Department of Energy’s Idaho National Laboratory (INL) Site’s offsite environment, April 1 through June 30, 2007. All sample types (media) and the sampling schedule followed during 2007 are listed in Appendix A. Specifically, this report contains the results for the following:
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Media |
Sample Type |
Analysis |
Results |
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Air |
Filters |
Gross alpha, gross beta |
The Distant locations had statistically higher gross alpha concentrations for the second quarter than the Boundary locations. There were no statistical differences noted for monthly gross alpha or gross beta concentrations measured at INL Site, Boundary and Distant locations. Some weekly differences were noted but these appear to be normal variability in the data. No result exceeded the DCG for gross alpha or gross beta activity in air. |
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Gamma-emitting radionuclides, select actinides (241Am, 238Pu, and 239,240 Pu), 90Sr |
Cesium-137 was not found. Strontium-90, Americium-241, Plutonium-238 and Plutonium-239/240 were each found on at least one composite at low levels. All reported detections were within the range of historical measurements. |
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Charcoal Cartridge |
Iodine-131 |
No detections of 131I were made during the second quarter. |
|
Atmospheric Moisture |
Liquid |
Tritium |
A total of 20 samples were collected. All but one of these samples had tritium results greater than the 3s uncertainty. Concentrations were consistent with those reported across the region and with previous results. |
|
Precipitation |
Liquid |
Tritium |
Eleven samples were collected. All of the results were greater than the 3s uncertainty. No sample result exceeded the DCG for tritium in air. |
|
Milk |
Liquid |
Iodine-131, gamma-emitting radionuclides, tritium and Strontium-90 |
No manmade gamma-emitting radionuclides or tritium were detected in any samples. Strontium-90 was detected at low levels in all four samples analyzed. Results were within historical measurements. |
|
Game Animals |
Tissue |
Iodine-131, gamma emitting radionuclides |
No manmade gamma-emitting radionuclides were detected in the one game animal available for sampling during the second quarter. |
|
Environmental Radiation |
TLD |
Ambient ionizing radiation |
Values were consistent with expected exposures given the altitude and location of the TLD's. There were no statistical differences between Boundary and Distant location results. |
Second Quarter 2007
INL Quarterly Site Environmental Report
Return to Index